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-rw-r--r--drivers/rapidio/Kconfig36
-rw-r--r--drivers/rapidio/Makefile9
-rw-r--r--drivers/rapidio/devices/Kconfig10
-rw-r--r--drivers/rapidio/devices/Makefile5
-rw-r--r--drivers/rapidio/devices/tsi721.c2362
-rw-r--r--drivers/rapidio/devices/tsi721.h768
-rw-r--r--drivers/rapidio/rio-access.c175
-rw-r--r--drivers/rapidio/rio-driver.c226
-rw-r--r--drivers/rapidio/rio-scan.c1314
-rw-r--r--drivers/rapidio/rio-sysfs.c287
-rw-r--r--drivers/rapidio/rio.c1197
-rw-r--r--drivers/rapidio/rio.h72
-rw-r--r--drivers/rapidio/switches/Kconfig35
-rw-r--r--drivers/rapidio/switches/Makefile9
-rw-r--r--drivers/rapidio/switches/idt_gen2.c431
-rw-r--r--drivers/rapidio/switches/idtcps.c149
-rw-r--r--drivers/rapidio/switches/tsi500.c78
-rw-r--r--drivers/rapidio/switches/tsi568.c146
-rw-r--r--drivers/rapidio/switches/tsi57x.c318
19 files changed, 7627 insertions, 0 deletions
diff --git a/drivers/rapidio/Kconfig b/drivers/rapidio/Kconfig
new file mode 100644
index 00000000..bc871923
--- /dev/null
+++ b/drivers/rapidio/Kconfig
@@ -0,0 +1,36 @@
+#
+# RapidIO configuration
+#
+source "drivers/rapidio/devices/Kconfig"
+
+config RAPIDIO_DISC_TIMEOUT
+ int "Discovery timeout duration (seconds)"
+ depends on RAPIDIO
+ default "30"
+ ---help---
+ Amount of time a discovery node waits for a host to complete
+ enumeration before giving up.
+
+config RAPIDIO_ENABLE_RX_TX_PORTS
+ bool "Enable RapidIO Input/Output Ports"
+ depends on RAPIDIO
+ ---help---
+ The RapidIO specification describes a Output port transmit
+ enable and a Input port receive enable. The recommended state
+ for Input ports and Output ports should be disabled. When
+ this switch is set the RapidIO subsystem will enable all
+ ports for Input/Output direction to allow other traffic
+ than Maintenance transfers.
+
+config RAPIDIO_DEBUG
+ bool "RapidIO subsystem debug messages"
+ depends on RAPIDIO
+ help
+ Say Y here if you want the RapidIO subsystem to produce a bunch of
+ debug messages to the system log. Select this if you are having a
+ problem with the RapidIO subsystem and want to see more of what is
+ going on.
+
+ If you are unsure about this, say N here.
+
+source "drivers/rapidio/switches/Kconfig"
diff --git a/drivers/rapidio/Makefile b/drivers/rapidio/Makefile
new file mode 100644
index 00000000..ec3fb812
--- /dev/null
+++ b/drivers/rapidio/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for RapidIO interconnect services
+#
+obj-y += rio.o rio-access.o rio-driver.o rio-scan.o rio-sysfs.o
+
+obj-$(CONFIG_RAPIDIO) += switches/
+obj-$(CONFIG_RAPIDIO) += devices/
+
+subdir-ccflags-$(CONFIG_RAPIDIO_DEBUG) := -DDEBUG
diff --git a/drivers/rapidio/devices/Kconfig b/drivers/rapidio/devices/Kconfig
new file mode 100644
index 00000000..12a9d7f7
--- /dev/null
+++ b/drivers/rapidio/devices/Kconfig
@@ -0,0 +1,10 @@
+#
+# RapidIO master port configuration
+#
+
+config RAPIDIO_TSI721
+ bool "IDT Tsi721 PCI Express SRIO Controller support"
+ depends on RAPIDIO && PCIEPORTBUS
+ default "n"
+ ---help---
+ Include support for IDT Tsi721 PCI Express Serial RapidIO controller.
diff --git a/drivers/rapidio/devices/Makefile b/drivers/rapidio/devices/Makefile
new file mode 100644
index 00000000..3b7b4e2d
--- /dev/null
+++ b/drivers/rapidio/devices/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for RapidIO devices
+#
+
+obj-$(CONFIG_RAPIDIO_TSI721) += tsi721.o
diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c
new file mode 100644
index 00000000..30d2072f
--- /dev/null
+++ b/drivers/rapidio/devices/tsi721.c
@@ -0,0 +1,2362 @@
+/*
+ * RapidIO mport driver for Tsi721 PCIExpress-to-SRIO bridge
+ *
+ * Copyright 2011 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ * Chul Kim <chul.kim@idt.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/kfifo.h>
+#include <linux/delay.h>
+
+#include "tsi721.h"
+
+#define DEBUG_PW /* Inbound Port-Write debugging */
+
+static void tsi721_omsg_handler(struct tsi721_device *priv, int ch);
+static void tsi721_imsg_handler(struct tsi721_device *priv, int ch);
+
+/**
+ * tsi721_lcread - read from local SREP config space
+ * @mport: RapidIO master port info
+ * @index: ID of RapdiIO interface
+ * @offset: Offset into configuration space
+ * @len: Length (in bytes) of the maintenance transaction
+ * @data: Value to be read into
+ *
+ * Generates a local SREP space read. Returns %0 on
+ * success or %-EINVAL on failure.
+ */
+static int tsi721_lcread(struct rio_mport *mport, int index, u32 offset,
+ int len, u32 *data)
+{
+ struct tsi721_device *priv = mport->priv;
+
+ if (len != sizeof(u32))
+ return -EINVAL; /* only 32-bit access is supported */
+
+ *data = ioread32(priv->regs + offset);
+
+ return 0;
+}
+
+/**
+ * tsi721_lcwrite - write into local SREP config space
+ * @mport: RapidIO master port info
+ * @index: ID of RapdiIO interface
+ * @offset: Offset into configuration space
+ * @len: Length (in bytes) of the maintenance transaction
+ * @data: Value to be written
+ *
+ * Generates a local write into SREP configuration space. Returns %0 on
+ * success or %-EINVAL on failure.
+ */
+static int tsi721_lcwrite(struct rio_mport *mport, int index, u32 offset,
+ int len, u32 data)
+{
+ struct tsi721_device *priv = mport->priv;
+
+ if (len != sizeof(u32))
+ return -EINVAL; /* only 32-bit access is supported */
+
+ iowrite32(data, priv->regs + offset);
+
+ return 0;
+}
+
+/**
+ * tsi721_maint_dma - Helper function to generate RapidIO maintenance
+ * transactions using designated Tsi721 DMA channel.
+ * @priv: pointer to tsi721 private data
+ * @sys_size: RapdiIO transport system size
+ * @destid: Destination ID of transaction
+ * @hopcount: Number of hops to target device
+ * @offset: Offset into configuration space
+ * @len: Length (in bytes) of the maintenance transaction
+ * @data: Location to be read from or write into
+ * @do_wr: Operation flag (1 == MAINT_WR)
+ *
+ * Generates a RapidIO maintenance transaction (Read or Write).
+ * Returns %0 on success and %-EINVAL or %-EFAULT on failure.
+ */
+static int tsi721_maint_dma(struct tsi721_device *priv, u32 sys_size,
+ u16 destid, u8 hopcount, u32 offset, int len,
+ u32 *data, int do_wr)
+{
+ struct tsi721_dma_desc *bd_ptr;
+ u32 rd_count, swr_ptr, ch_stat;
+ int i, err = 0;
+ u32 op = do_wr ? MAINT_WR : MAINT_RD;
+
+ if (offset > (RIO_MAINT_SPACE_SZ - len) || (len != sizeof(u32)))
+ return -EINVAL;
+
+ bd_ptr = priv->bdma[TSI721_DMACH_MAINT].bd_base;
+
+ rd_count = ioread32(
+ priv->regs + TSI721_DMAC_DRDCNT(TSI721_DMACH_MAINT));
+
+ /* Initialize DMA descriptor */
+ bd_ptr[0].type_id = cpu_to_le32((DTYPE2 << 29) | (op << 19) | destid);
+ bd_ptr[0].bcount = cpu_to_le32((sys_size << 26) | 0x04);
+ bd_ptr[0].raddr_lo = cpu_to_le32((hopcount << 24) | offset);
+ bd_ptr[0].raddr_hi = 0;
+ if (do_wr)
+ bd_ptr[0].data[0] = cpu_to_be32p(data);
+ else
+ bd_ptr[0].data[0] = 0xffffffff;
+
+ mb();
+
+ /* Start DMA operation */
+ iowrite32(rd_count + 2,
+ priv->regs + TSI721_DMAC_DWRCNT(TSI721_DMACH_MAINT));
+ ioread32(priv->regs + TSI721_DMAC_DWRCNT(TSI721_DMACH_MAINT));
+ i = 0;
+
+ /* Wait until DMA transfer is finished */
+ while ((ch_stat = ioread32(priv->regs +
+ TSI721_DMAC_STS(TSI721_DMACH_MAINT))) & TSI721_DMAC_STS_RUN) {
+ udelay(1);
+ if (++i >= 5000000) {
+ dev_dbg(&priv->pdev->dev,
+ "%s : DMA[%d] read timeout ch_status=%x\n",
+ __func__, TSI721_DMACH_MAINT, ch_stat);
+ if (!do_wr)
+ *data = 0xffffffff;
+ err = -EIO;
+ goto err_out;
+ }
+ }
+
+ if (ch_stat & TSI721_DMAC_STS_ABORT) {
+ /* If DMA operation aborted due to error,
+ * reinitialize DMA channel
+ */
+ dev_dbg(&priv->pdev->dev, "%s : DMA ABORT ch_stat=%x\n",
+ __func__, ch_stat);
+ dev_dbg(&priv->pdev->dev, "OP=%d : destid=%x hc=%x off=%x\n",
+ do_wr ? MAINT_WR : MAINT_RD, destid, hopcount, offset);
+ iowrite32(TSI721_DMAC_INT_ALL,
+ priv->regs + TSI721_DMAC_INT(TSI721_DMACH_MAINT));
+ iowrite32(TSI721_DMAC_CTL_INIT,
+ priv->regs + TSI721_DMAC_CTL(TSI721_DMACH_MAINT));
+ udelay(10);
+ iowrite32(0, priv->regs +
+ TSI721_DMAC_DWRCNT(TSI721_DMACH_MAINT));
+ udelay(1);
+ if (!do_wr)
+ *data = 0xffffffff;
+ err = -EIO;
+ goto err_out;
+ }
+
+ if (!do_wr)
+ *data = be32_to_cpu(bd_ptr[0].data[0]);
+
+ /*
+ * Update descriptor status FIFO RD pointer.
+ * NOTE: Skipping check and clear FIFO entries because we are waiting
+ * for transfer to be completed.
+ */
+ swr_ptr = ioread32(priv->regs + TSI721_DMAC_DSWP(TSI721_DMACH_MAINT));
+ iowrite32(swr_ptr, priv->regs + TSI721_DMAC_DSRP(TSI721_DMACH_MAINT));
+err_out:
+
+ return err;
+}
+
+/**
+ * tsi721_cread_dma - Generate a RapidIO maintenance read transaction
+ * using Tsi721 BDMA engine.
+ * @mport: RapidIO master port control structure
+ * @index: ID of RapdiIO interface
+ * @destid: Destination ID of transaction
+ * @hopcount: Number of hops to target device
+ * @offset: Offset into configuration space
+ * @len: Length (in bytes) of the maintenance transaction
+ * @val: Location to be read into
+ *
+ * Generates a RapidIO maintenance read transaction.
+ * Returns %0 on success and %-EINVAL or %-EFAULT on failure.
+ */
+static int tsi721_cread_dma(struct rio_mport *mport, int index, u16 destid,
+ u8 hopcount, u32 offset, int len, u32 *data)
+{
+ struct tsi721_device *priv = mport->priv;
+
+ return tsi721_maint_dma(priv, mport->sys_size, destid, hopcount,
+ offset, len, data, 0);
+}
+
+/**
+ * tsi721_cwrite_dma - Generate a RapidIO maintenance write transaction
+ * using Tsi721 BDMA engine
+ * @mport: RapidIO master port control structure
+ * @index: ID of RapdiIO interface
+ * @destid: Destination ID of transaction
+ * @hopcount: Number of hops to target device
+ * @offset: Offset into configuration space
+ * @len: Length (in bytes) of the maintenance transaction
+ * @val: Value to be written
+ *
+ * Generates a RapidIO maintenance write transaction.
+ * Returns %0 on success and %-EINVAL or %-EFAULT on failure.
+ */
+static int tsi721_cwrite_dma(struct rio_mport *mport, int index, u16 destid,
+ u8 hopcount, u32 offset, int len, u32 data)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 temp = data;
+
+ return tsi721_maint_dma(priv, mport->sys_size, destid, hopcount,
+ offset, len, &temp, 1);
+}
+
+/**
+ * tsi721_pw_handler - Tsi721 inbound port-write interrupt handler
+ * @mport: RapidIO master port structure
+ *
+ * Handles inbound port-write interrupts. Copies PW message from an internal
+ * buffer into PW message FIFO and schedules deferred routine to process
+ * queued messages.
+ */
+static int
+tsi721_pw_handler(struct rio_mport *mport)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 pw_stat;
+ u32 pw_buf[TSI721_RIO_PW_MSG_SIZE/sizeof(u32)];
+
+
+ pw_stat = ioread32(priv->regs + TSI721_RIO_PW_RX_STAT);
+
+ if (pw_stat & TSI721_RIO_PW_RX_STAT_PW_VAL) {
+ pw_buf[0] = ioread32(priv->regs + TSI721_RIO_PW_RX_CAPT(0));
+ pw_buf[1] = ioread32(priv->regs + TSI721_RIO_PW_RX_CAPT(1));
+ pw_buf[2] = ioread32(priv->regs + TSI721_RIO_PW_RX_CAPT(2));
+ pw_buf[3] = ioread32(priv->regs + TSI721_RIO_PW_RX_CAPT(3));
+
+ /* Queue PW message (if there is room in FIFO),
+ * otherwise discard it.
+ */
+ spin_lock(&priv->pw_fifo_lock);
+ if (kfifo_avail(&priv->pw_fifo) >= TSI721_RIO_PW_MSG_SIZE)
+ kfifo_in(&priv->pw_fifo, pw_buf,
+ TSI721_RIO_PW_MSG_SIZE);
+ else
+ priv->pw_discard_count++;
+ spin_unlock(&priv->pw_fifo_lock);
+ }
+
+ /* Clear pending PW interrupts */
+ iowrite32(TSI721_RIO_PW_RX_STAT_PW_DISC | TSI721_RIO_PW_RX_STAT_PW_VAL,
+ priv->regs + TSI721_RIO_PW_RX_STAT);
+
+ schedule_work(&priv->pw_work);
+
+ return 0;
+}
+
+static void tsi721_pw_dpc(struct work_struct *work)
+{
+ struct tsi721_device *priv = container_of(work, struct tsi721_device,
+ pw_work);
+ u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)]; /* Use full size PW message
+ buffer for RIO layer */
+
+ /*
+ * Process port-write messages
+ */
+ while (kfifo_out_spinlocked(&priv->pw_fifo, (unsigned char *)msg_buffer,
+ TSI721_RIO_PW_MSG_SIZE, &priv->pw_fifo_lock)) {
+ /* Process one message */
+#ifdef DEBUG_PW
+ {
+ u32 i;
+ pr_debug("%s : Port-Write Message:", __func__);
+ for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32); ) {
+ pr_debug("0x%02x: %08x %08x %08x %08x", i*4,
+ msg_buffer[i], msg_buffer[i + 1],
+ msg_buffer[i + 2], msg_buffer[i + 3]);
+ i += 4;
+ }
+ pr_debug("\n");
+ }
+#endif
+ /* Pass the port-write message to RIO core for processing */
+ rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer);
+ }
+}
+
+/**
+ * tsi721_pw_enable - enable/disable port-write interface init
+ * @mport: Master port implementing the port write unit
+ * @enable: 1=enable; 0=disable port-write message handling
+ */
+static int tsi721_pw_enable(struct rio_mport *mport, int enable)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 rval;
+
+ rval = ioread32(priv->regs + TSI721_RIO_EM_INT_ENABLE);
+
+ if (enable)
+ rval |= TSI721_RIO_EM_INT_ENABLE_PW_RX;
+ else
+ rval &= ~TSI721_RIO_EM_INT_ENABLE_PW_RX;
+
+ /* Clear pending PW interrupts */
+ iowrite32(TSI721_RIO_PW_RX_STAT_PW_DISC | TSI721_RIO_PW_RX_STAT_PW_VAL,
+ priv->regs + TSI721_RIO_PW_RX_STAT);
+ /* Update enable bits */
+ iowrite32(rval, priv->regs + TSI721_RIO_EM_INT_ENABLE);
+
+ return 0;
+}
+
+/**
+ * tsi721_dsend - Send a RapidIO doorbell
+ * @mport: RapidIO master port info
+ * @index: ID of RapidIO interface
+ * @destid: Destination ID of target device
+ * @data: 16-bit info field of RapidIO doorbell
+ *
+ * Sends a RapidIO doorbell message. Always returns %0.
+ */
+static int tsi721_dsend(struct rio_mport *mport, int index,
+ u16 destid, u16 data)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 offset;
+
+ offset = (((mport->sys_size) ? RIO_TT_CODE_16 : RIO_TT_CODE_8) << 18) |
+ (destid << 2);
+
+ dev_dbg(&priv->pdev->dev,
+ "Send Doorbell 0x%04x to destID 0x%x\n", data, destid);
+ iowrite16be(data, priv->odb_base + offset);
+
+ return 0;
+}
+
+/**
+ * tsi721_dbell_handler - Tsi721 doorbell interrupt handler
+ * @mport: RapidIO master port structure
+ *
+ * Handles inbound doorbell interrupts. Copies doorbell entry from an internal
+ * buffer into DB message FIFO and schedules deferred routine to process
+ * queued DBs.
+ */
+static int
+tsi721_dbell_handler(struct rio_mport *mport)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 regval;
+
+ /* Disable IDB interrupts */
+ regval = ioread32(priv->regs + TSI721_SR_CHINTE(IDB_QUEUE));
+ regval &= ~TSI721_SR_CHINT_IDBQRCV;
+ iowrite32(regval,
+ priv->regs + TSI721_SR_CHINTE(IDB_QUEUE));
+
+ schedule_work(&priv->idb_work);
+
+ return 0;
+}
+
+static void tsi721_db_dpc(struct work_struct *work)
+{
+ struct tsi721_device *priv = container_of(work, struct tsi721_device,
+ idb_work);
+ struct rio_mport *mport;
+ struct rio_dbell *dbell;
+ int found = 0;
+ u32 wr_ptr, rd_ptr;
+ u64 *idb_entry;
+ u32 regval;
+ union {
+ u64 msg;
+ u8 bytes[8];
+ } idb;
+
+ /*
+ * Process queued inbound doorbells
+ */
+ mport = priv->mport;
+
+ wr_ptr = ioread32(priv->regs + TSI721_IDQ_WP(IDB_QUEUE)) % IDB_QSIZE;
+ rd_ptr = ioread32(priv->regs + TSI721_IDQ_RP(IDB_QUEUE)) % IDB_QSIZE;
+
+ while (wr_ptr != rd_ptr) {
+ idb_entry = (u64 *)(priv->idb_base +
+ (TSI721_IDB_ENTRY_SIZE * rd_ptr));
+ rd_ptr++;
+ rd_ptr %= IDB_QSIZE;
+ idb.msg = *idb_entry;
+ *idb_entry = 0;
+
+ /* Process one doorbell */
+ list_for_each_entry(dbell, &mport->dbells, node) {
+ if ((dbell->res->start <= DBELL_INF(idb.bytes)) &&
+ (dbell->res->end >= DBELL_INF(idb.bytes))) {
+ found = 1;
+ break;
+ }
+ }
+
+ if (found) {
+ dbell->dinb(mport, dbell->dev_id, DBELL_SID(idb.bytes),
+ DBELL_TID(idb.bytes), DBELL_INF(idb.bytes));
+ } else {
+ dev_dbg(&priv->pdev->dev,
+ "spurious inb doorbell, sid %2.2x tid %2.2x"
+ " info %4.4x\n", DBELL_SID(idb.bytes),
+ DBELL_TID(idb.bytes), DBELL_INF(idb.bytes));
+ }
+ }
+
+ iowrite32(rd_ptr & (IDB_QSIZE - 1),
+ priv->regs + TSI721_IDQ_RP(IDB_QUEUE));
+
+ /* Re-enable IDB interrupts */
+ regval = ioread32(priv->regs + TSI721_SR_CHINTE(IDB_QUEUE));
+ regval |= TSI721_SR_CHINT_IDBQRCV;
+ iowrite32(regval,
+ priv->regs + TSI721_SR_CHINTE(IDB_QUEUE));
+}
+
+/**
+ * tsi721_irqhandler - Tsi721 interrupt handler
+ * @irq: Linux interrupt number
+ * @ptr: Pointer to interrupt-specific data (mport structure)
+ *
+ * Handles Tsi721 interrupts signaled using MSI and INTA. Checks reported
+ * interrupt events and calls an event-specific handler(s).
+ */
+static irqreturn_t tsi721_irqhandler(int irq, void *ptr)
+{
+ struct rio_mport *mport = (struct rio_mport *)ptr;
+ struct tsi721_device *priv = mport->priv;
+ u32 dev_int;
+ u32 dev_ch_int;
+ u32 intval;
+ u32 ch_inte;
+
+ dev_int = ioread32(priv->regs + TSI721_DEV_INT);
+ if (!dev_int)
+ return IRQ_NONE;
+
+ dev_ch_int = ioread32(priv->regs + TSI721_DEV_CHAN_INT);
+
+ if (dev_int & TSI721_DEV_INT_SR2PC_CH) {
+ /* Service SR2PC Channel interrupts */
+ if (dev_ch_int & TSI721_INT_SR2PC_CHAN(IDB_QUEUE)) {
+ /* Service Inbound Doorbell interrupt */
+ intval = ioread32(priv->regs +
+ TSI721_SR_CHINT(IDB_QUEUE));
+ if (intval & TSI721_SR_CHINT_IDBQRCV)
+ tsi721_dbell_handler(mport);
+ else
+ dev_info(&priv->pdev->dev,
+ "Unsupported SR_CH_INT %x\n", intval);
+
+ /* Clear interrupts */
+ iowrite32(intval,
+ priv->regs + TSI721_SR_CHINT(IDB_QUEUE));
+ ioread32(priv->regs + TSI721_SR_CHINT(IDB_QUEUE));
+ }
+ }
+
+ if (dev_int & TSI721_DEV_INT_SMSG_CH) {
+ int ch;
+
+ /*
+ * Service channel interrupts from Messaging Engine
+ */
+
+ if (dev_ch_int & TSI721_INT_IMSG_CHAN_M) { /* Inbound Msg */
+ /* Disable signaled OB MSG Channel interrupts */
+ ch_inte = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ ch_inte &= ~(dev_ch_int & TSI721_INT_IMSG_CHAN_M);
+ iowrite32(ch_inte, priv->regs + TSI721_DEV_CHAN_INTE);
+
+ /*
+ * Process Inbound Message interrupt for each MBOX
+ */
+ for (ch = 4; ch < RIO_MAX_MBOX + 4; ch++) {
+ if (!(dev_ch_int & TSI721_INT_IMSG_CHAN(ch)))
+ continue;
+ tsi721_imsg_handler(priv, ch);
+ }
+ }
+
+ if (dev_ch_int & TSI721_INT_OMSG_CHAN_M) { /* Outbound Msg */
+ /* Disable signaled OB MSG Channel interrupts */
+ ch_inte = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ ch_inte &= ~(dev_ch_int & TSI721_INT_OMSG_CHAN_M);
+ iowrite32(ch_inte, priv->regs + TSI721_DEV_CHAN_INTE);
+
+ /*
+ * Process Outbound Message interrupts for each MBOX
+ */
+
+ for (ch = 0; ch < RIO_MAX_MBOX; ch++) {
+ if (!(dev_ch_int & TSI721_INT_OMSG_CHAN(ch)))
+ continue;
+ tsi721_omsg_handler(priv, ch);
+ }
+ }
+ }
+
+ if (dev_int & TSI721_DEV_INT_SRIO) {
+ /* Service SRIO MAC interrupts */
+ intval = ioread32(priv->regs + TSI721_RIO_EM_INT_STAT);
+ if (intval & TSI721_RIO_EM_INT_STAT_PW_RX)
+ tsi721_pw_handler(mport);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void tsi721_interrupts_init(struct tsi721_device *priv)
+{
+ u32 intr;
+
+ /* Enable IDB interrupts */
+ iowrite32(TSI721_SR_CHINT_ALL,
+ priv->regs + TSI721_SR_CHINT(IDB_QUEUE));
+ iowrite32(TSI721_SR_CHINT_IDBQRCV,
+ priv->regs + TSI721_SR_CHINTE(IDB_QUEUE));
+ iowrite32(TSI721_INT_SR2PC_CHAN(IDB_QUEUE),
+ priv->regs + TSI721_DEV_CHAN_INTE);
+
+ /* Enable SRIO MAC interrupts */
+ iowrite32(TSI721_RIO_EM_DEV_INT_EN_INT,
+ priv->regs + TSI721_RIO_EM_DEV_INT_EN);
+
+ if (priv->flags & TSI721_USING_MSIX)
+ intr = TSI721_DEV_INT_SRIO;
+ else
+ intr = TSI721_DEV_INT_SR2PC_CH | TSI721_DEV_INT_SRIO |
+ TSI721_DEV_INT_SMSG_CH;
+
+ iowrite32(intr, priv->regs + TSI721_DEV_INTE);
+ ioread32(priv->regs + TSI721_DEV_INTE);
+}
+
+#ifdef CONFIG_PCI_MSI
+/**
+ * tsi721_omsg_msix - MSI-X interrupt handler for outbound messaging
+ * @irq: Linux interrupt number
+ * @ptr: Pointer to interrupt-specific data (mport structure)
+ *
+ * Handles outbound messaging interrupts signaled using MSI-X.
+ */
+static irqreturn_t tsi721_omsg_msix(int irq, void *ptr)
+{
+ struct tsi721_device *priv = ((struct rio_mport *)ptr)->priv;
+ int mbox;
+
+ mbox = (irq - priv->msix[TSI721_VECT_OMB0_DONE].vector) % RIO_MAX_MBOX;
+ tsi721_omsg_handler(priv, mbox);
+ return IRQ_HANDLED;
+}
+
+/**
+ * tsi721_imsg_msix - MSI-X interrupt handler for inbound messaging
+ * @irq: Linux interrupt number
+ * @ptr: Pointer to interrupt-specific data (mport structure)
+ *
+ * Handles inbound messaging interrupts signaled using MSI-X.
+ */
+static irqreturn_t tsi721_imsg_msix(int irq, void *ptr)
+{
+ struct tsi721_device *priv = ((struct rio_mport *)ptr)->priv;
+ int mbox;
+
+ mbox = (irq - priv->msix[TSI721_VECT_IMB0_RCV].vector) % RIO_MAX_MBOX;
+ tsi721_imsg_handler(priv, mbox + 4);
+ return IRQ_HANDLED;
+}
+
+/**
+ * tsi721_srio_msix - Tsi721 MSI-X SRIO MAC interrupt handler
+ * @irq: Linux interrupt number
+ * @ptr: Pointer to interrupt-specific data (mport structure)
+ *
+ * Handles Tsi721 interrupts from SRIO MAC.
+ */
+static irqreturn_t tsi721_srio_msix(int irq, void *ptr)
+{
+ struct tsi721_device *priv = ((struct rio_mport *)ptr)->priv;
+ u32 srio_int;
+
+ /* Service SRIO MAC interrupts */
+ srio_int = ioread32(priv->regs + TSI721_RIO_EM_INT_STAT);
+ if (srio_int & TSI721_RIO_EM_INT_STAT_PW_RX)
+ tsi721_pw_handler((struct rio_mport *)ptr);
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * tsi721_sr2pc_ch_msix - Tsi721 MSI-X SR2PC Channel interrupt handler
+ * @irq: Linux interrupt number
+ * @ptr: Pointer to interrupt-specific data (mport structure)
+ *
+ * Handles Tsi721 interrupts from SR2PC Channel.
+ * NOTE: At this moment services only one SR2PC channel associated with inbound
+ * doorbells.
+ */
+static irqreturn_t tsi721_sr2pc_ch_msix(int irq, void *ptr)
+{
+ struct tsi721_device *priv = ((struct rio_mport *)ptr)->priv;
+ u32 sr_ch_int;
+
+ /* Service Inbound DB interrupt from SR2PC channel */
+ sr_ch_int = ioread32(priv->regs + TSI721_SR_CHINT(IDB_QUEUE));
+ if (sr_ch_int & TSI721_SR_CHINT_IDBQRCV)
+ tsi721_dbell_handler((struct rio_mport *)ptr);
+
+ /* Clear interrupts */
+ iowrite32(sr_ch_int, priv->regs + TSI721_SR_CHINT(IDB_QUEUE));
+ /* Read back to ensure that interrupt was cleared */
+ sr_ch_int = ioread32(priv->regs + TSI721_SR_CHINT(IDB_QUEUE));
+
+ return IRQ_HANDLED;
+}
+
+/**
+ * tsi721_request_msix - register interrupt service for MSI-X mode.
+ * @mport: RapidIO master port structure
+ *
+ * Registers MSI-X interrupt service routines for interrupts that are active
+ * immediately after mport initialization. Messaging interrupt service routines
+ * should be registered during corresponding open requests.
+ */
+static int tsi721_request_msix(struct rio_mport *mport)
+{
+ struct tsi721_device *priv = mport->priv;
+ int err = 0;
+
+ err = request_irq(priv->msix[TSI721_VECT_IDB].vector,
+ tsi721_sr2pc_ch_msix, 0,
+ priv->msix[TSI721_VECT_IDB].irq_name, (void *)mport);
+ if (err)
+ goto out;
+
+ err = request_irq(priv->msix[TSI721_VECT_PWRX].vector,
+ tsi721_srio_msix, 0,
+ priv->msix[TSI721_VECT_PWRX].irq_name, (void *)mport);
+ if (err)
+ free_irq(
+ priv->msix[TSI721_VECT_IDB].vector,
+ (void *)mport);
+out:
+ return err;
+}
+
+/**
+ * tsi721_enable_msix - Attempts to enable MSI-X support for Tsi721.
+ * @priv: pointer to tsi721 private data
+ *
+ * Configures MSI-X support for Tsi721. Supports only an exact number
+ * of requested vectors.
+ */
+static int tsi721_enable_msix(struct tsi721_device *priv)
+{
+ struct msix_entry entries[TSI721_VECT_MAX];
+ int err;
+ int i;
+
+ entries[TSI721_VECT_IDB].entry = TSI721_MSIX_SR2PC_IDBQ_RCV(IDB_QUEUE);
+ entries[TSI721_VECT_PWRX].entry = TSI721_MSIX_SRIO_MAC_INT;
+
+ /*
+ * Initialize MSI-X entries for Messaging Engine:
+ * this driver supports four RIO mailboxes (inbound and outbound)
+ * NOTE: Inbound message MBOX 0...4 use IB channels 4...7. Therefore
+ * offset +4 is added to IB MBOX number.
+ */
+ for (i = 0; i < RIO_MAX_MBOX; i++) {
+ entries[TSI721_VECT_IMB0_RCV + i].entry =
+ TSI721_MSIX_IMSG_DQ_RCV(i + 4);
+ entries[TSI721_VECT_IMB0_INT + i].entry =
+ TSI721_MSIX_IMSG_INT(i + 4);
+ entries[TSI721_VECT_OMB0_DONE + i].entry =
+ TSI721_MSIX_OMSG_DONE(i);
+ entries[TSI721_VECT_OMB0_INT + i].entry =
+ TSI721_MSIX_OMSG_INT(i);
+ }
+
+ err = pci_enable_msix(priv->pdev, entries, ARRAY_SIZE(entries));
+ if (err) {
+ if (err > 0)
+ dev_info(&priv->pdev->dev,
+ "Only %d MSI-X vectors available, "
+ "not using MSI-X\n", err);
+ return err;
+ }
+
+ /*
+ * Copy MSI-X vector information into tsi721 private structure
+ */
+ priv->msix[TSI721_VECT_IDB].vector = entries[TSI721_VECT_IDB].vector;
+ snprintf(priv->msix[TSI721_VECT_IDB].irq_name, IRQ_DEVICE_NAME_MAX,
+ DRV_NAME "-idb@pci:%s", pci_name(priv->pdev));
+ priv->msix[TSI721_VECT_PWRX].vector = entries[TSI721_VECT_PWRX].vector;
+ snprintf(priv->msix[TSI721_VECT_PWRX].irq_name, IRQ_DEVICE_NAME_MAX,
+ DRV_NAME "-pwrx@pci:%s", pci_name(priv->pdev));
+
+ for (i = 0; i < RIO_MAX_MBOX; i++) {
+ priv->msix[TSI721_VECT_IMB0_RCV + i].vector =
+ entries[TSI721_VECT_IMB0_RCV + i].vector;
+ snprintf(priv->msix[TSI721_VECT_IMB0_RCV + i].irq_name,
+ IRQ_DEVICE_NAME_MAX, DRV_NAME "-imbr%d@pci:%s",
+ i, pci_name(priv->pdev));
+
+ priv->msix[TSI721_VECT_IMB0_INT + i].vector =
+ entries[TSI721_VECT_IMB0_INT + i].vector;
+ snprintf(priv->msix[TSI721_VECT_IMB0_INT + i].irq_name,
+ IRQ_DEVICE_NAME_MAX, DRV_NAME "-imbi%d@pci:%s",
+ i, pci_name(priv->pdev));
+
+ priv->msix[TSI721_VECT_OMB0_DONE + i].vector =
+ entries[TSI721_VECT_OMB0_DONE + i].vector;
+ snprintf(priv->msix[TSI721_VECT_OMB0_DONE + i].irq_name,
+ IRQ_DEVICE_NAME_MAX, DRV_NAME "-ombd%d@pci:%s",
+ i, pci_name(priv->pdev));
+
+ priv->msix[TSI721_VECT_OMB0_INT + i].vector =
+ entries[TSI721_VECT_OMB0_INT + i].vector;
+ snprintf(priv->msix[TSI721_VECT_OMB0_INT + i].irq_name,
+ IRQ_DEVICE_NAME_MAX, DRV_NAME "-ombi%d@pci:%s",
+ i, pci_name(priv->pdev));
+ }
+
+ return 0;
+}
+#endif /* CONFIG_PCI_MSI */
+
+static int tsi721_request_irq(struct rio_mport *mport)
+{
+ struct tsi721_device *priv = mport->priv;
+ int err;
+
+#ifdef CONFIG_PCI_MSI
+ if (priv->flags & TSI721_USING_MSIX)
+ err = tsi721_request_msix(mport);
+ else
+#endif
+ err = request_irq(priv->pdev->irq, tsi721_irqhandler,
+ (priv->flags & TSI721_USING_MSI) ? 0 : IRQF_SHARED,
+ DRV_NAME, (void *)mport);
+
+ if (err)
+ dev_err(&priv->pdev->dev,
+ "Unable to allocate interrupt, Error: %d\n", err);
+
+ return err;
+}
+
+/**
+ * tsi721_init_pc2sr_mapping - initializes outbound (PCIe->SRIO)
+ * translation regions.
+ * @priv: pointer to tsi721 private data
+ *
+ * Disables SREP translation regions.
+ */
+static void tsi721_init_pc2sr_mapping(struct tsi721_device *priv)
+{
+ int i;
+
+ /* Disable all PC2SR translation windows */
+ for (i = 0; i < TSI721_OBWIN_NUM; i++)
+ iowrite32(0, priv->regs + TSI721_OBWINLB(i));
+}
+
+/**
+ * tsi721_init_sr2pc_mapping - initializes inbound (SRIO->PCIe)
+ * translation regions.
+ * @priv: pointer to tsi721 private data
+ *
+ * Disables inbound windows.
+ */
+static void tsi721_init_sr2pc_mapping(struct tsi721_device *priv)
+{
+ int i;
+
+ /* Disable all SR2PC inbound windows */
+ for (i = 0; i < TSI721_IBWIN_NUM; i++)
+ iowrite32(0, priv->regs + TSI721_IBWINLB(i));
+}
+
+/**
+ * tsi721_port_write_init - Inbound port write interface init
+ * @priv: pointer to tsi721 private data
+ *
+ * Initializes inbound port write handler.
+ * Returns %0 on success or %-ENOMEM on failure.
+ */
+static int tsi721_port_write_init(struct tsi721_device *priv)
+{
+ priv->pw_discard_count = 0;
+ INIT_WORK(&priv->pw_work, tsi721_pw_dpc);
+ spin_lock_init(&priv->pw_fifo_lock);
+ if (kfifo_alloc(&priv->pw_fifo,
+ TSI721_RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) {
+ dev_err(&priv->pdev->dev, "PW FIFO allocation failed\n");
+ return -ENOMEM;
+ }
+
+ /* Use reliable port-write capture mode */
+ iowrite32(TSI721_RIO_PW_CTL_PWC_REL, priv->regs + TSI721_RIO_PW_CTL);
+ return 0;
+}
+
+static int tsi721_doorbell_init(struct tsi721_device *priv)
+{
+ /* Outbound Doorbells do not require any setup.
+ * Tsi721 uses dedicated PCI BAR1 to generate doorbells.
+ * That BAR1 was mapped during the probe routine.
+ */
+
+ /* Initialize Inbound Doorbell processing DPC and queue */
+ priv->db_discard_count = 0;
+ INIT_WORK(&priv->idb_work, tsi721_db_dpc);
+
+ /* Allocate buffer for inbound doorbells queue */
+ priv->idb_base = dma_zalloc_coherent(&priv->pdev->dev,
+ IDB_QSIZE * TSI721_IDB_ENTRY_SIZE,
+ &priv->idb_dma, GFP_KERNEL);
+ if (!priv->idb_base)
+ return -ENOMEM;
+
+ dev_dbg(&priv->pdev->dev, "Allocated IDB buffer @ %p (phys = %llx)\n",
+ priv->idb_base, (unsigned long long)priv->idb_dma);
+
+ iowrite32(TSI721_IDQ_SIZE_VAL(IDB_QSIZE),
+ priv->regs + TSI721_IDQ_SIZE(IDB_QUEUE));
+ iowrite32(((u64)priv->idb_dma >> 32),
+ priv->regs + TSI721_IDQ_BASEU(IDB_QUEUE));
+ iowrite32(((u64)priv->idb_dma & TSI721_IDQ_BASEL_ADDR),
+ priv->regs + TSI721_IDQ_BASEL(IDB_QUEUE));
+ /* Enable accepting all inbound doorbells */
+ iowrite32(0, priv->regs + TSI721_IDQ_MASK(IDB_QUEUE));
+
+ iowrite32(TSI721_IDQ_INIT, priv->regs + TSI721_IDQ_CTL(IDB_QUEUE));
+
+ iowrite32(0, priv->regs + TSI721_IDQ_RP(IDB_QUEUE));
+
+ return 0;
+}
+
+static void tsi721_doorbell_free(struct tsi721_device *priv)
+{
+ if (priv->idb_base == NULL)
+ return;
+
+ /* Free buffer allocated for inbound doorbell queue */
+ dma_free_coherent(&priv->pdev->dev, IDB_QSIZE * TSI721_IDB_ENTRY_SIZE,
+ priv->idb_base, priv->idb_dma);
+ priv->idb_base = NULL;
+}
+
+static int tsi721_bdma_ch_init(struct tsi721_device *priv, int chnum)
+{
+ struct tsi721_dma_desc *bd_ptr;
+ u64 *sts_ptr;
+ dma_addr_t bd_phys, sts_phys;
+ int sts_size;
+ int bd_num = priv->bdma[chnum].bd_num;
+
+ dev_dbg(&priv->pdev->dev, "Init Block DMA Engine, CH%d\n", chnum);
+
+ /*
+ * Initialize DMA channel for maintenance requests
+ */
+
+ /* Allocate space for DMA descriptors */
+ bd_ptr = dma_zalloc_coherent(&priv->pdev->dev,
+ bd_num * sizeof(struct tsi721_dma_desc),
+ &bd_phys, GFP_KERNEL);
+ if (!bd_ptr)
+ return -ENOMEM;
+
+ priv->bdma[chnum].bd_phys = bd_phys;
+ priv->bdma[chnum].bd_base = bd_ptr;
+
+ dev_dbg(&priv->pdev->dev, "DMA descriptors @ %p (phys = %llx)\n",
+ bd_ptr, (unsigned long long)bd_phys);
+
+ /* Allocate space for descriptor status FIFO */
+ sts_size = (bd_num >= TSI721_DMA_MINSTSSZ) ?
+ bd_num : TSI721_DMA_MINSTSSZ;
+ sts_size = roundup_pow_of_two(sts_size);
+ sts_ptr = dma_zalloc_coherent(&priv->pdev->dev,
+ sts_size * sizeof(struct tsi721_dma_sts),
+ &sts_phys, GFP_KERNEL);
+ if (!sts_ptr) {
+ /* Free space allocated for DMA descriptors */
+ dma_free_coherent(&priv->pdev->dev,
+ bd_num * sizeof(struct tsi721_dma_desc),
+ bd_ptr, bd_phys);
+ priv->bdma[chnum].bd_base = NULL;
+ return -ENOMEM;
+ }
+
+ priv->bdma[chnum].sts_phys = sts_phys;
+ priv->bdma[chnum].sts_base = sts_ptr;
+ priv->bdma[chnum].sts_size = sts_size;
+
+ dev_dbg(&priv->pdev->dev,
+ "desc status FIFO @ %p (phys = %llx) size=0x%x\n",
+ sts_ptr, (unsigned long long)sts_phys, sts_size);
+
+ /* Initialize DMA descriptors ring */
+ bd_ptr[bd_num - 1].type_id = cpu_to_le32(DTYPE3 << 29);
+ bd_ptr[bd_num - 1].next_lo = cpu_to_le32((u64)bd_phys &
+ TSI721_DMAC_DPTRL_MASK);
+ bd_ptr[bd_num - 1].next_hi = cpu_to_le32((u64)bd_phys >> 32);
+
+ /* Setup DMA descriptor pointers */
+ iowrite32(((u64)bd_phys >> 32),
+ priv->regs + TSI721_DMAC_DPTRH(chnum));
+ iowrite32(((u64)bd_phys & TSI721_DMAC_DPTRL_MASK),
+ priv->regs + TSI721_DMAC_DPTRL(chnum));
+
+ /* Setup descriptor status FIFO */
+ iowrite32(((u64)sts_phys >> 32),
+ priv->regs + TSI721_DMAC_DSBH(chnum));
+ iowrite32(((u64)sts_phys & TSI721_DMAC_DSBL_MASK),
+ priv->regs + TSI721_DMAC_DSBL(chnum));
+ iowrite32(TSI721_DMAC_DSSZ_SIZE(sts_size),
+ priv->regs + TSI721_DMAC_DSSZ(chnum));
+
+ /* Clear interrupt bits */
+ iowrite32(TSI721_DMAC_INT_ALL,
+ priv->regs + TSI721_DMAC_INT(chnum));
+
+ ioread32(priv->regs + TSI721_DMAC_INT(chnum));
+
+ /* Toggle DMA channel initialization */
+ iowrite32(TSI721_DMAC_CTL_INIT, priv->regs + TSI721_DMAC_CTL(chnum));
+ ioread32(priv->regs + TSI721_DMAC_CTL(chnum));
+ udelay(10);
+
+ return 0;
+}
+
+static int tsi721_bdma_ch_free(struct tsi721_device *priv, int chnum)
+{
+ u32 ch_stat;
+
+ if (priv->bdma[chnum].bd_base == NULL)
+ return 0;
+
+ /* Check if DMA channel still running */
+ ch_stat = ioread32(priv->regs + TSI721_DMAC_STS(chnum));
+ if (ch_stat & TSI721_DMAC_STS_RUN)
+ return -EFAULT;
+
+ /* Put DMA channel into init state */
+ iowrite32(TSI721_DMAC_CTL_INIT,
+ priv->regs + TSI721_DMAC_CTL(chnum));
+
+ /* Free space allocated for DMA descriptors */
+ dma_free_coherent(&priv->pdev->dev,
+ priv->bdma[chnum].bd_num * sizeof(struct tsi721_dma_desc),
+ priv->bdma[chnum].bd_base, priv->bdma[chnum].bd_phys);
+ priv->bdma[chnum].bd_base = NULL;
+
+ /* Free space allocated for status FIFO */
+ dma_free_coherent(&priv->pdev->dev,
+ priv->bdma[chnum].sts_size * sizeof(struct tsi721_dma_sts),
+ priv->bdma[chnum].sts_base, priv->bdma[chnum].sts_phys);
+ priv->bdma[chnum].sts_base = NULL;
+ return 0;
+}
+
+static int tsi721_bdma_init(struct tsi721_device *priv)
+{
+ /* Initialize BDMA channel allocated for RapidIO maintenance read/write
+ * request generation
+ */
+ priv->bdma[TSI721_DMACH_MAINT].bd_num = 2;
+ if (tsi721_bdma_ch_init(priv, TSI721_DMACH_MAINT)) {
+ dev_err(&priv->pdev->dev, "Unable to initialize maintenance DMA"
+ " channel %d, aborting\n", TSI721_DMACH_MAINT);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+static void tsi721_bdma_free(struct tsi721_device *priv)
+{
+ tsi721_bdma_ch_free(priv, TSI721_DMACH_MAINT);
+}
+
+/* Enable Inbound Messaging Interrupts */
+static void
+tsi721_imsg_interrupt_enable(struct tsi721_device *priv, int ch,
+ u32 inte_mask)
+{
+ u32 rval;
+
+ if (!inte_mask)
+ return;
+
+ /* Clear pending Inbound Messaging interrupts */
+ iowrite32(inte_mask, priv->regs + TSI721_IBDMAC_INT(ch));
+
+ /* Enable Inbound Messaging interrupts */
+ rval = ioread32(priv->regs + TSI721_IBDMAC_INTE(ch));
+ iowrite32(rval | inte_mask, priv->regs + TSI721_IBDMAC_INTE(ch));
+
+ if (priv->flags & TSI721_USING_MSIX)
+ return; /* Finished if we are in MSI-X mode */
+
+ /*
+ * For MSI and INTA interrupt signalling we need to enable next levels
+ */
+
+ /* Enable Device Channel Interrupt */
+ rval = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ iowrite32(rval | TSI721_INT_IMSG_CHAN(ch),
+ priv->regs + TSI721_DEV_CHAN_INTE);
+}
+
+/* Disable Inbound Messaging Interrupts */
+static void
+tsi721_imsg_interrupt_disable(struct tsi721_device *priv, int ch,
+ u32 inte_mask)
+{
+ u32 rval;
+
+ if (!inte_mask)
+ return;
+
+ /* Clear pending Inbound Messaging interrupts */
+ iowrite32(inte_mask, priv->regs + TSI721_IBDMAC_INT(ch));
+
+ /* Disable Inbound Messaging interrupts */
+ rval = ioread32(priv->regs + TSI721_IBDMAC_INTE(ch));
+ rval &= ~inte_mask;
+ iowrite32(rval, priv->regs + TSI721_IBDMAC_INTE(ch));
+
+ if (priv->flags & TSI721_USING_MSIX)
+ return; /* Finished if we are in MSI-X mode */
+
+ /*
+ * For MSI and INTA interrupt signalling we need to disable next levels
+ */
+
+ /* Disable Device Channel Interrupt */
+ rval = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ rval &= ~TSI721_INT_IMSG_CHAN(ch);
+ iowrite32(rval, priv->regs + TSI721_DEV_CHAN_INTE);
+}
+
+/* Enable Outbound Messaging interrupts */
+static void
+tsi721_omsg_interrupt_enable(struct tsi721_device *priv, int ch,
+ u32 inte_mask)
+{
+ u32 rval;
+
+ if (!inte_mask)
+ return;
+
+ /* Clear pending Outbound Messaging interrupts */
+ iowrite32(inte_mask, priv->regs + TSI721_OBDMAC_INT(ch));
+
+ /* Enable Outbound Messaging channel interrupts */
+ rval = ioread32(priv->regs + TSI721_OBDMAC_INTE(ch));
+ iowrite32(rval | inte_mask, priv->regs + TSI721_OBDMAC_INTE(ch));
+
+ if (priv->flags & TSI721_USING_MSIX)
+ return; /* Finished if we are in MSI-X mode */
+
+ /*
+ * For MSI and INTA interrupt signalling we need to enable next levels
+ */
+
+ /* Enable Device Channel Interrupt */
+ rval = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ iowrite32(rval | TSI721_INT_OMSG_CHAN(ch),
+ priv->regs + TSI721_DEV_CHAN_INTE);
+}
+
+/* Disable Outbound Messaging interrupts */
+static void
+tsi721_omsg_interrupt_disable(struct tsi721_device *priv, int ch,
+ u32 inte_mask)
+{
+ u32 rval;
+
+ if (!inte_mask)
+ return;
+
+ /* Clear pending Outbound Messaging interrupts */
+ iowrite32(inte_mask, priv->regs + TSI721_OBDMAC_INT(ch));
+
+ /* Disable Outbound Messaging interrupts */
+ rval = ioread32(priv->regs + TSI721_OBDMAC_INTE(ch));
+ rval &= ~inte_mask;
+ iowrite32(rval, priv->regs + TSI721_OBDMAC_INTE(ch));
+
+ if (priv->flags & TSI721_USING_MSIX)
+ return; /* Finished if we are in MSI-X mode */
+
+ /*
+ * For MSI and INTA interrupt signalling we need to disable next levels
+ */
+
+ /* Disable Device Channel Interrupt */
+ rval = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ rval &= ~TSI721_INT_OMSG_CHAN(ch);
+ iowrite32(rval, priv->regs + TSI721_DEV_CHAN_INTE);
+}
+
+/**
+ * tsi721_add_outb_message - Add message to the Tsi721 outbound message queue
+ * @mport: Master port with outbound message queue
+ * @rdev: Target of outbound message
+ * @mbox: Outbound mailbox
+ * @buffer: Message to add to outbound queue
+ * @len: Length of message
+ */
+static int
+tsi721_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
+ void *buffer, size_t len)
+{
+ struct tsi721_device *priv = mport->priv;
+ struct tsi721_omsg_desc *desc;
+ u32 tx_slot;
+
+ if (!priv->omsg_init[mbox] ||
+ len > TSI721_MSG_MAX_SIZE || len < 8)
+ return -EINVAL;
+
+ tx_slot = priv->omsg_ring[mbox].tx_slot;
+
+ /* Copy copy message into transfer buffer */
+ memcpy(priv->omsg_ring[mbox].omq_base[tx_slot], buffer, len);
+
+ if (len & 0x7)
+ len += 8;
+
+ /* Build descriptor associated with buffer */
+ desc = priv->omsg_ring[mbox].omd_base;
+ desc[tx_slot].type_id = cpu_to_le32((DTYPE4 << 29) | rdev->destid);
+ if (tx_slot % 4 == 0)
+ desc[tx_slot].type_id |= cpu_to_le32(TSI721_OMD_IOF);
+
+ desc[tx_slot].msg_info =
+ cpu_to_le32((mport->sys_size << 26) | (mbox << 22) |
+ (0xe << 12) | (len & 0xff8));
+ desc[tx_slot].bufptr_lo =
+ cpu_to_le32((u64)priv->omsg_ring[mbox].omq_phys[tx_slot] &
+ 0xffffffff);
+ desc[tx_slot].bufptr_hi =
+ cpu_to_le32((u64)priv->omsg_ring[mbox].omq_phys[tx_slot] >> 32);
+
+ priv->omsg_ring[mbox].wr_count++;
+
+ /* Go to next descriptor */
+ if (++priv->omsg_ring[mbox].tx_slot == priv->omsg_ring[mbox].size) {
+ priv->omsg_ring[mbox].tx_slot = 0;
+ /* Move through the ring link descriptor at the end */
+ priv->omsg_ring[mbox].wr_count++;
+ }
+
+ mb();
+
+ /* Set new write count value */
+ iowrite32(priv->omsg_ring[mbox].wr_count,
+ priv->regs + TSI721_OBDMAC_DWRCNT(mbox));
+ ioread32(priv->regs + TSI721_OBDMAC_DWRCNT(mbox));
+
+ return 0;
+}
+
+/**
+ * tsi721_omsg_handler - Outbound Message Interrupt Handler
+ * @priv: pointer to tsi721 private data
+ * @ch: number of OB MSG channel to service
+ *
+ * Services channel interrupts from outbound messaging engine.
+ */
+static void tsi721_omsg_handler(struct tsi721_device *priv, int ch)
+{
+ u32 omsg_int;
+
+ spin_lock(&priv->omsg_ring[ch].lock);
+
+ omsg_int = ioread32(priv->regs + TSI721_OBDMAC_INT(ch));
+
+ if (omsg_int & TSI721_OBDMAC_INT_ST_FULL)
+ dev_info(&priv->pdev->dev,
+ "OB MBOX%d: Status FIFO is full\n", ch);
+
+ if (omsg_int & (TSI721_OBDMAC_INT_DONE | TSI721_OBDMAC_INT_IOF_DONE)) {
+ u32 srd_ptr;
+ u64 *sts_ptr, last_ptr = 0, prev_ptr = 0;
+ int i, j;
+ u32 tx_slot;
+
+ /*
+ * Find last successfully processed descriptor
+ */
+
+ /* Check and clear descriptor status FIFO entries */
+ srd_ptr = priv->omsg_ring[ch].sts_rdptr;
+ sts_ptr = priv->omsg_ring[ch].sts_base;
+ j = srd_ptr * 8;
+ while (sts_ptr[j]) {
+ for (i = 0; i < 8 && sts_ptr[j]; i++, j++) {
+ prev_ptr = last_ptr;
+ last_ptr = le64_to_cpu(sts_ptr[j]);
+ sts_ptr[j] = 0;
+ }
+
+ ++srd_ptr;
+ srd_ptr %= priv->omsg_ring[ch].sts_size;
+ j = srd_ptr * 8;
+ }
+
+ if (last_ptr == 0)
+ goto no_sts_update;
+
+ priv->omsg_ring[ch].sts_rdptr = srd_ptr;
+ iowrite32(srd_ptr, priv->regs + TSI721_OBDMAC_DSRP(ch));
+
+ if (!priv->mport->outb_msg[ch].mcback)
+ goto no_sts_update;
+
+ /* Inform upper layer about transfer completion */
+
+ tx_slot = (last_ptr - (u64)priv->omsg_ring[ch].omd_phys)/
+ sizeof(struct tsi721_omsg_desc);
+
+ /*
+ * Check if this is a Link Descriptor (LD).
+ * If yes, ignore LD and use descriptor processed
+ * before LD.
+ */
+ if (tx_slot == priv->omsg_ring[ch].size) {
+ if (prev_ptr)
+ tx_slot = (prev_ptr -
+ (u64)priv->omsg_ring[ch].omd_phys)/
+ sizeof(struct tsi721_omsg_desc);
+ else
+ goto no_sts_update;
+ }
+
+ /* Move slot index to the next message to be sent */
+ ++tx_slot;
+ if (tx_slot == priv->omsg_ring[ch].size)
+ tx_slot = 0;
+ BUG_ON(tx_slot >= priv->omsg_ring[ch].size);
+ priv->mport->outb_msg[ch].mcback(priv->mport,
+ priv->omsg_ring[ch].dev_id, ch,
+ tx_slot);
+ }
+
+no_sts_update:
+
+ if (omsg_int & TSI721_OBDMAC_INT_ERROR) {
+ /*
+ * Outbound message operation aborted due to error,
+ * reinitialize OB MSG channel
+ */
+
+ dev_dbg(&priv->pdev->dev, "OB MSG ABORT ch_stat=%x\n",
+ ioread32(priv->regs + TSI721_OBDMAC_STS(ch)));
+
+ iowrite32(TSI721_OBDMAC_INT_ERROR,
+ priv->regs + TSI721_OBDMAC_INT(ch));
+ iowrite32(TSI721_OBDMAC_CTL_INIT,
+ priv->regs + TSI721_OBDMAC_CTL(ch));
+ ioread32(priv->regs + TSI721_OBDMAC_CTL(ch));
+
+ /* Inform upper level to clear all pending tx slots */
+ if (priv->mport->outb_msg[ch].mcback)
+ priv->mport->outb_msg[ch].mcback(priv->mport,
+ priv->omsg_ring[ch].dev_id, ch,
+ priv->omsg_ring[ch].tx_slot);
+ /* Synch tx_slot tracking */
+ iowrite32(priv->omsg_ring[ch].tx_slot,
+ priv->regs + TSI721_OBDMAC_DRDCNT(ch));
+ ioread32(priv->regs + TSI721_OBDMAC_DRDCNT(ch));
+ priv->omsg_ring[ch].wr_count = priv->omsg_ring[ch].tx_slot;
+ priv->omsg_ring[ch].sts_rdptr = 0;
+ }
+
+ /* Clear channel interrupts */
+ iowrite32(omsg_int, priv->regs + TSI721_OBDMAC_INT(ch));
+
+ if (!(priv->flags & TSI721_USING_MSIX)) {
+ u32 ch_inte;
+
+ /* Re-enable channel interrupts */
+ ch_inte = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ ch_inte |= TSI721_INT_OMSG_CHAN(ch);
+ iowrite32(ch_inte, priv->regs + TSI721_DEV_CHAN_INTE);
+ }
+
+ spin_unlock(&priv->omsg_ring[ch].lock);
+}
+
+/**
+ * tsi721_open_outb_mbox - Initialize Tsi721 outbound mailbox
+ * @mport: Master port implementing Outbound Messaging Engine
+ * @dev_id: Device specific pointer to pass on event
+ * @mbox: Mailbox to open
+ * @entries: Number of entries in the outbound mailbox ring
+ */
+static int tsi721_open_outb_mbox(struct rio_mport *mport, void *dev_id,
+ int mbox, int entries)
+{
+ struct tsi721_device *priv = mport->priv;
+ struct tsi721_omsg_desc *bd_ptr;
+ int i, rc = 0;
+
+ if ((entries < TSI721_OMSGD_MIN_RING_SIZE) ||
+ (entries > (TSI721_OMSGD_RING_SIZE)) ||
+ (!is_power_of_2(entries)) || mbox >= RIO_MAX_MBOX) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ priv->omsg_ring[mbox].dev_id = dev_id;
+ priv->omsg_ring[mbox].size = entries;
+ priv->omsg_ring[mbox].sts_rdptr = 0;
+ spin_lock_init(&priv->omsg_ring[mbox].lock);
+
+ /* Outbound Msg Buffer allocation based on
+ the number of maximum descriptor entries */
+ for (i = 0; i < entries; i++) {
+ priv->omsg_ring[mbox].omq_base[i] =
+ dma_alloc_coherent(
+ &priv->pdev->dev, TSI721_MSG_BUFFER_SIZE,
+ &priv->omsg_ring[mbox].omq_phys[i],
+ GFP_KERNEL);
+ if (priv->omsg_ring[mbox].omq_base[i] == NULL) {
+ dev_dbg(&priv->pdev->dev,
+ "Unable to allocate OB MSG data buffer for"
+ " MBOX%d\n", mbox);
+ rc = -ENOMEM;
+ goto out_buf;
+ }
+ }
+
+ /* Outbound message descriptor allocation */
+ priv->omsg_ring[mbox].omd_base = dma_alloc_coherent(
+ &priv->pdev->dev,
+ (entries + 1) * sizeof(struct tsi721_omsg_desc),
+ &priv->omsg_ring[mbox].omd_phys, GFP_KERNEL);
+ if (priv->omsg_ring[mbox].omd_base == NULL) {
+ dev_dbg(&priv->pdev->dev,
+ "Unable to allocate OB MSG descriptor memory "
+ "for MBOX%d\n", mbox);
+ rc = -ENOMEM;
+ goto out_buf;
+ }
+
+ priv->omsg_ring[mbox].tx_slot = 0;
+
+ /* Outbound message descriptor status FIFO allocation */
+ priv->omsg_ring[mbox].sts_size = roundup_pow_of_two(entries + 1);
+ priv->omsg_ring[mbox].sts_base = dma_zalloc_coherent(&priv->pdev->dev,
+ priv->omsg_ring[mbox].sts_size *
+ sizeof(struct tsi721_dma_sts),
+ &priv->omsg_ring[mbox].sts_phys, GFP_KERNEL);
+ if (priv->omsg_ring[mbox].sts_base == NULL) {
+ dev_dbg(&priv->pdev->dev,
+ "Unable to allocate OB MSG descriptor status FIFO "
+ "for MBOX%d\n", mbox);
+ rc = -ENOMEM;
+ goto out_desc;
+ }
+
+ /*
+ * Configure Outbound Messaging Engine
+ */
+
+ /* Setup Outbound Message descriptor pointer */
+ iowrite32(((u64)priv->omsg_ring[mbox].omd_phys >> 32),
+ priv->regs + TSI721_OBDMAC_DPTRH(mbox));
+ iowrite32(((u64)priv->omsg_ring[mbox].omd_phys &
+ TSI721_OBDMAC_DPTRL_MASK),
+ priv->regs + TSI721_OBDMAC_DPTRL(mbox));
+
+ /* Setup Outbound Message descriptor status FIFO */
+ iowrite32(((u64)priv->omsg_ring[mbox].sts_phys >> 32),
+ priv->regs + TSI721_OBDMAC_DSBH(mbox));
+ iowrite32(((u64)priv->omsg_ring[mbox].sts_phys &
+ TSI721_OBDMAC_DSBL_MASK),
+ priv->regs + TSI721_OBDMAC_DSBL(mbox));
+ iowrite32(TSI721_DMAC_DSSZ_SIZE(priv->omsg_ring[mbox].sts_size),
+ priv->regs + (u32)TSI721_OBDMAC_DSSZ(mbox));
+
+ /* Enable interrupts */
+
+#ifdef CONFIG_PCI_MSI
+ if (priv->flags & TSI721_USING_MSIX) {
+ /* Request interrupt service if we are in MSI-X mode */
+ rc = request_irq(
+ priv->msix[TSI721_VECT_OMB0_DONE + mbox].vector,
+ tsi721_omsg_msix, 0,
+ priv->msix[TSI721_VECT_OMB0_DONE + mbox].irq_name,
+ (void *)mport);
+
+ if (rc) {
+ dev_dbg(&priv->pdev->dev,
+ "Unable to allocate MSI-X interrupt for "
+ "OBOX%d-DONE\n", mbox);
+ goto out_stat;
+ }
+
+ rc = request_irq(priv->msix[TSI721_VECT_OMB0_INT + mbox].vector,
+ tsi721_omsg_msix, 0,
+ priv->msix[TSI721_VECT_OMB0_INT + mbox].irq_name,
+ (void *)mport);
+
+ if (rc) {
+ dev_dbg(&priv->pdev->dev,
+ "Unable to allocate MSI-X interrupt for "
+ "MBOX%d-INT\n", mbox);
+ free_irq(
+ priv->msix[TSI721_VECT_OMB0_DONE + mbox].vector,
+ (void *)mport);
+ goto out_stat;
+ }
+ }
+#endif /* CONFIG_PCI_MSI */
+
+ tsi721_omsg_interrupt_enable(priv, mbox, TSI721_OBDMAC_INT_ALL);
+
+ /* Initialize Outbound Message descriptors ring */
+ bd_ptr = priv->omsg_ring[mbox].omd_base;
+ bd_ptr[entries].type_id = cpu_to_le32(DTYPE5 << 29);
+ bd_ptr[entries].msg_info = 0;
+ bd_ptr[entries].next_lo =
+ cpu_to_le32((u64)priv->omsg_ring[mbox].omd_phys &
+ TSI721_OBDMAC_DPTRL_MASK);
+ bd_ptr[entries].next_hi =
+ cpu_to_le32((u64)priv->omsg_ring[mbox].omd_phys >> 32);
+ priv->omsg_ring[mbox].wr_count = 0;
+ mb();
+
+ /* Initialize Outbound Message engine */
+ iowrite32(TSI721_OBDMAC_CTL_INIT, priv->regs + TSI721_OBDMAC_CTL(mbox));
+ ioread32(priv->regs + TSI721_OBDMAC_DWRCNT(mbox));
+ udelay(10);
+
+ priv->omsg_init[mbox] = 1;
+
+ return 0;
+
+#ifdef CONFIG_PCI_MSI
+out_stat:
+ dma_free_coherent(&priv->pdev->dev,
+ priv->omsg_ring[mbox].sts_size * sizeof(struct tsi721_dma_sts),
+ priv->omsg_ring[mbox].sts_base,
+ priv->omsg_ring[mbox].sts_phys);
+
+ priv->omsg_ring[mbox].sts_base = NULL;
+#endif /* CONFIG_PCI_MSI */
+
+out_desc:
+ dma_free_coherent(&priv->pdev->dev,
+ (entries + 1) * sizeof(struct tsi721_omsg_desc),
+ priv->omsg_ring[mbox].omd_base,
+ priv->omsg_ring[mbox].omd_phys);
+
+ priv->omsg_ring[mbox].omd_base = NULL;
+
+out_buf:
+ for (i = 0; i < priv->omsg_ring[mbox].size; i++) {
+ if (priv->omsg_ring[mbox].omq_base[i]) {
+ dma_free_coherent(&priv->pdev->dev,
+ TSI721_MSG_BUFFER_SIZE,
+ priv->omsg_ring[mbox].omq_base[i],
+ priv->omsg_ring[mbox].omq_phys[i]);
+
+ priv->omsg_ring[mbox].omq_base[i] = NULL;
+ }
+ }
+
+out:
+ return rc;
+}
+
+/**
+ * tsi721_close_outb_mbox - Close Tsi721 outbound mailbox
+ * @mport: Master port implementing the outbound message unit
+ * @mbox: Mailbox to close
+ */
+static void tsi721_close_outb_mbox(struct rio_mport *mport, int mbox)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 i;
+
+ if (!priv->omsg_init[mbox])
+ return;
+ priv->omsg_init[mbox] = 0;
+
+ /* Disable Interrupts */
+
+ tsi721_omsg_interrupt_disable(priv, mbox, TSI721_OBDMAC_INT_ALL);
+
+#ifdef CONFIG_PCI_MSI
+ if (priv->flags & TSI721_USING_MSIX) {
+ free_irq(priv->msix[TSI721_VECT_OMB0_DONE + mbox].vector,
+ (void *)mport);
+ free_irq(priv->msix[TSI721_VECT_OMB0_INT + mbox].vector,
+ (void *)mport);
+ }
+#endif /* CONFIG_PCI_MSI */
+
+ /* Free OMSG Descriptor Status FIFO */
+ dma_free_coherent(&priv->pdev->dev,
+ priv->omsg_ring[mbox].sts_size * sizeof(struct tsi721_dma_sts),
+ priv->omsg_ring[mbox].sts_base,
+ priv->omsg_ring[mbox].sts_phys);
+
+ priv->omsg_ring[mbox].sts_base = NULL;
+
+ /* Free OMSG descriptors */
+ dma_free_coherent(&priv->pdev->dev,
+ (priv->omsg_ring[mbox].size + 1) *
+ sizeof(struct tsi721_omsg_desc),
+ priv->omsg_ring[mbox].omd_base,
+ priv->omsg_ring[mbox].omd_phys);
+
+ priv->omsg_ring[mbox].omd_base = NULL;
+
+ /* Free message buffers */
+ for (i = 0; i < priv->omsg_ring[mbox].size; i++) {
+ if (priv->omsg_ring[mbox].omq_base[i]) {
+ dma_free_coherent(&priv->pdev->dev,
+ TSI721_MSG_BUFFER_SIZE,
+ priv->omsg_ring[mbox].omq_base[i],
+ priv->omsg_ring[mbox].omq_phys[i]);
+
+ priv->omsg_ring[mbox].omq_base[i] = NULL;
+ }
+ }
+}
+
+/**
+ * tsi721_imsg_handler - Inbound Message Interrupt Handler
+ * @priv: pointer to tsi721 private data
+ * @ch: inbound message channel number to service
+ *
+ * Services channel interrupts from inbound messaging engine.
+ */
+static void tsi721_imsg_handler(struct tsi721_device *priv, int ch)
+{
+ u32 mbox = ch - 4;
+ u32 imsg_int;
+
+ spin_lock(&priv->imsg_ring[mbox].lock);
+
+ imsg_int = ioread32(priv->regs + TSI721_IBDMAC_INT(ch));
+
+ if (imsg_int & TSI721_IBDMAC_INT_SRTO)
+ dev_info(&priv->pdev->dev, "IB MBOX%d SRIO timeout\n",
+ mbox);
+
+ if (imsg_int & TSI721_IBDMAC_INT_PC_ERROR)
+ dev_info(&priv->pdev->dev, "IB MBOX%d PCIe error\n",
+ mbox);
+
+ if (imsg_int & TSI721_IBDMAC_INT_FQ_LOW)
+ dev_info(&priv->pdev->dev,
+ "IB MBOX%d IB free queue low\n", mbox);
+
+ /* Clear IB channel interrupts */
+ iowrite32(imsg_int, priv->regs + TSI721_IBDMAC_INT(ch));
+
+ /* If an IB Msg is received notify the upper layer */
+ if (imsg_int & TSI721_IBDMAC_INT_DQ_RCV &&
+ priv->mport->inb_msg[mbox].mcback)
+ priv->mport->inb_msg[mbox].mcback(priv->mport,
+ priv->imsg_ring[mbox].dev_id, mbox, -1);
+
+ if (!(priv->flags & TSI721_USING_MSIX)) {
+ u32 ch_inte;
+
+ /* Re-enable channel interrupts */
+ ch_inte = ioread32(priv->regs + TSI721_DEV_CHAN_INTE);
+ ch_inte |= TSI721_INT_IMSG_CHAN(ch);
+ iowrite32(ch_inte, priv->regs + TSI721_DEV_CHAN_INTE);
+ }
+
+ spin_unlock(&priv->imsg_ring[mbox].lock);
+}
+
+/**
+ * tsi721_open_inb_mbox - Initialize Tsi721 inbound mailbox
+ * @mport: Master port implementing the Inbound Messaging Engine
+ * @dev_id: Device specific pointer to pass on event
+ * @mbox: Mailbox to open
+ * @entries: Number of entries in the inbound mailbox ring
+ */
+static int tsi721_open_inb_mbox(struct rio_mport *mport, void *dev_id,
+ int mbox, int entries)
+{
+ struct tsi721_device *priv = mport->priv;
+ int ch = mbox + 4;
+ int i;
+ u64 *free_ptr;
+ int rc = 0;
+
+ if ((entries < TSI721_IMSGD_MIN_RING_SIZE) ||
+ (entries > TSI721_IMSGD_RING_SIZE) ||
+ (!is_power_of_2(entries)) || mbox >= RIO_MAX_MBOX) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ /* Initialize IB Messaging Ring */
+ priv->imsg_ring[mbox].dev_id = dev_id;
+ priv->imsg_ring[mbox].size = entries;
+ priv->imsg_ring[mbox].rx_slot = 0;
+ priv->imsg_ring[mbox].desc_rdptr = 0;
+ priv->imsg_ring[mbox].fq_wrptr = 0;
+ for (i = 0; i < priv->imsg_ring[mbox].size; i++)
+ priv->imsg_ring[mbox].imq_base[i] = NULL;
+ spin_lock_init(&priv->imsg_ring[mbox].lock);
+
+ /* Allocate buffers for incoming messages */
+ priv->imsg_ring[mbox].buf_base =
+ dma_alloc_coherent(&priv->pdev->dev,
+ entries * TSI721_MSG_BUFFER_SIZE,
+ &priv->imsg_ring[mbox].buf_phys,
+ GFP_KERNEL);
+
+ if (priv->imsg_ring[mbox].buf_base == NULL) {
+ dev_err(&priv->pdev->dev,
+ "Failed to allocate buffers for IB MBOX%d\n", mbox);
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /* Allocate memory for circular free list */
+ priv->imsg_ring[mbox].imfq_base =
+ dma_alloc_coherent(&priv->pdev->dev,
+ entries * 8,
+ &priv->imsg_ring[mbox].imfq_phys,
+ GFP_KERNEL);
+
+ if (priv->imsg_ring[mbox].imfq_base == NULL) {
+ dev_err(&priv->pdev->dev,
+ "Failed to allocate free queue for IB MBOX%d\n", mbox);
+ rc = -ENOMEM;
+ goto out_buf;
+ }
+
+ /* Allocate memory for Inbound message descriptors */
+ priv->imsg_ring[mbox].imd_base =
+ dma_alloc_coherent(&priv->pdev->dev,
+ entries * sizeof(struct tsi721_imsg_desc),
+ &priv->imsg_ring[mbox].imd_phys, GFP_KERNEL);
+
+ if (priv->imsg_ring[mbox].imd_base == NULL) {
+ dev_err(&priv->pdev->dev,
+ "Failed to allocate descriptor memory for IB MBOX%d\n",
+ mbox);
+ rc = -ENOMEM;
+ goto out_dma;
+ }
+
+ /* Fill free buffer pointer list */
+ free_ptr = priv->imsg_ring[mbox].imfq_base;
+ for (i = 0; i < entries; i++)
+ free_ptr[i] = cpu_to_le64(
+ (u64)(priv->imsg_ring[mbox].buf_phys) +
+ i * 0x1000);
+
+ mb();
+
+ /*
+ * For mapping of inbound SRIO Messages into appropriate queues we need
+ * to set Inbound Device ID register in the messaging engine. We do it
+ * once when first inbound mailbox is requested.
+ */
+ if (!(priv->flags & TSI721_IMSGID_SET)) {
+ iowrite32((u32)priv->mport->host_deviceid,
+ priv->regs + TSI721_IB_DEVID);
+ priv->flags |= TSI721_IMSGID_SET;
+ }
+
+ /*
+ * Configure Inbound Messaging channel (ch = mbox + 4)
+ */
+
+ /* Setup Inbound Message free queue */
+ iowrite32(((u64)priv->imsg_ring[mbox].imfq_phys >> 32),
+ priv->regs + TSI721_IBDMAC_FQBH(ch));
+ iowrite32(((u64)priv->imsg_ring[mbox].imfq_phys &
+ TSI721_IBDMAC_FQBL_MASK),
+ priv->regs+TSI721_IBDMAC_FQBL(ch));
+ iowrite32(TSI721_DMAC_DSSZ_SIZE(entries),
+ priv->regs + TSI721_IBDMAC_FQSZ(ch));
+
+ /* Setup Inbound Message descriptor queue */
+ iowrite32(((u64)priv->imsg_ring[mbox].imd_phys >> 32),
+ priv->regs + TSI721_IBDMAC_DQBH(ch));
+ iowrite32(((u32)priv->imsg_ring[mbox].imd_phys &
+ (u32)TSI721_IBDMAC_DQBL_MASK),
+ priv->regs+TSI721_IBDMAC_DQBL(ch));
+ iowrite32(TSI721_DMAC_DSSZ_SIZE(entries),
+ priv->regs + TSI721_IBDMAC_DQSZ(ch));
+
+ /* Enable interrupts */
+
+#ifdef CONFIG_PCI_MSI
+ if (priv->flags & TSI721_USING_MSIX) {
+ /* Request interrupt service if we are in MSI-X mode */
+ rc = request_irq(priv->msix[TSI721_VECT_IMB0_RCV + mbox].vector,
+ tsi721_imsg_msix, 0,
+ priv->msix[TSI721_VECT_IMB0_RCV + mbox].irq_name,
+ (void *)mport);
+
+ if (rc) {
+ dev_dbg(&priv->pdev->dev,
+ "Unable to allocate MSI-X interrupt for "
+ "IBOX%d-DONE\n", mbox);
+ goto out_desc;
+ }
+
+ rc = request_irq(priv->msix[TSI721_VECT_IMB0_INT + mbox].vector,
+ tsi721_imsg_msix, 0,
+ priv->msix[TSI721_VECT_IMB0_INT + mbox].irq_name,
+ (void *)mport);
+
+ if (rc) {
+ dev_dbg(&priv->pdev->dev,
+ "Unable to allocate MSI-X interrupt for "
+ "IBOX%d-INT\n", mbox);
+ free_irq(
+ priv->msix[TSI721_VECT_IMB0_RCV + mbox].vector,
+ (void *)mport);
+ goto out_desc;
+ }
+ }
+#endif /* CONFIG_PCI_MSI */
+
+ tsi721_imsg_interrupt_enable(priv, ch, TSI721_IBDMAC_INT_ALL);
+
+ /* Initialize Inbound Message Engine */
+ iowrite32(TSI721_IBDMAC_CTL_INIT, priv->regs + TSI721_IBDMAC_CTL(ch));
+ ioread32(priv->regs + TSI721_IBDMAC_CTL(ch));
+ udelay(10);
+ priv->imsg_ring[mbox].fq_wrptr = entries - 1;
+ iowrite32(entries - 1, priv->regs + TSI721_IBDMAC_FQWP(ch));
+
+ priv->imsg_init[mbox] = 1;
+ return 0;
+
+#ifdef CONFIG_PCI_MSI
+out_desc:
+ dma_free_coherent(&priv->pdev->dev,
+ priv->imsg_ring[mbox].size * sizeof(struct tsi721_imsg_desc),
+ priv->imsg_ring[mbox].imd_base,
+ priv->imsg_ring[mbox].imd_phys);
+
+ priv->imsg_ring[mbox].imd_base = NULL;
+#endif /* CONFIG_PCI_MSI */
+
+out_dma:
+ dma_free_coherent(&priv->pdev->dev,
+ priv->imsg_ring[mbox].size * 8,
+ priv->imsg_ring[mbox].imfq_base,
+ priv->imsg_ring[mbox].imfq_phys);
+
+ priv->imsg_ring[mbox].imfq_base = NULL;
+
+out_buf:
+ dma_free_coherent(&priv->pdev->dev,
+ priv->imsg_ring[mbox].size * TSI721_MSG_BUFFER_SIZE,
+ priv->imsg_ring[mbox].buf_base,
+ priv->imsg_ring[mbox].buf_phys);
+
+ priv->imsg_ring[mbox].buf_base = NULL;
+
+out:
+ return rc;
+}
+
+/**
+ * tsi721_close_inb_mbox - Shut down Tsi721 inbound mailbox
+ * @mport: Master port implementing the Inbound Messaging Engine
+ * @mbox: Mailbox to close
+ */
+static void tsi721_close_inb_mbox(struct rio_mport *mport, int mbox)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 rx_slot;
+ int ch = mbox + 4;
+
+ if (!priv->imsg_init[mbox]) /* mbox isn't initialized yet */
+ return;
+ priv->imsg_init[mbox] = 0;
+
+ /* Disable Inbound Messaging Engine */
+
+ /* Disable Interrupts */
+ tsi721_imsg_interrupt_disable(priv, ch, TSI721_OBDMAC_INT_MASK);
+
+#ifdef CONFIG_PCI_MSI
+ if (priv->flags & TSI721_USING_MSIX) {
+ free_irq(priv->msix[TSI721_VECT_IMB0_RCV + mbox].vector,
+ (void *)mport);
+ free_irq(priv->msix[TSI721_VECT_IMB0_INT + mbox].vector,
+ (void *)mport);
+ }
+#endif /* CONFIG_PCI_MSI */
+
+ /* Clear Inbound Buffer Queue */
+ for (rx_slot = 0; rx_slot < priv->imsg_ring[mbox].size; rx_slot++)
+ priv->imsg_ring[mbox].imq_base[rx_slot] = NULL;
+
+ /* Free memory allocated for message buffers */
+ dma_free_coherent(&priv->pdev->dev,
+ priv->imsg_ring[mbox].size * TSI721_MSG_BUFFER_SIZE,
+ priv->imsg_ring[mbox].buf_base,
+ priv->imsg_ring[mbox].buf_phys);
+
+ priv->imsg_ring[mbox].buf_base = NULL;
+
+ /* Free memory allocated for free pointr list */
+ dma_free_coherent(&priv->pdev->dev,
+ priv->imsg_ring[mbox].size * 8,
+ priv->imsg_ring[mbox].imfq_base,
+ priv->imsg_ring[mbox].imfq_phys);
+
+ priv->imsg_ring[mbox].imfq_base = NULL;
+
+ /* Free memory allocated for RX descriptors */
+ dma_free_coherent(&priv->pdev->dev,
+ priv->imsg_ring[mbox].size * sizeof(struct tsi721_imsg_desc),
+ priv->imsg_ring[mbox].imd_base,
+ priv->imsg_ring[mbox].imd_phys);
+
+ priv->imsg_ring[mbox].imd_base = NULL;
+}
+
+/**
+ * tsi721_add_inb_buffer - Add buffer to the Tsi721 inbound message queue
+ * @mport: Master port implementing the Inbound Messaging Engine
+ * @mbox: Inbound mailbox number
+ * @buf: Buffer to add to inbound queue
+ */
+static int tsi721_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf)
+{
+ struct tsi721_device *priv = mport->priv;
+ u32 rx_slot;
+ int rc = 0;
+
+ rx_slot = priv->imsg_ring[mbox].rx_slot;
+ if (priv->imsg_ring[mbox].imq_base[rx_slot]) {
+ dev_err(&priv->pdev->dev,
+ "Error adding inbound buffer %d, buffer exists\n",
+ rx_slot);
+ rc = -EINVAL;
+ goto out;
+ }
+
+ priv->imsg_ring[mbox].imq_base[rx_slot] = buf;
+
+ if (++priv->imsg_ring[mbox].rx_slot == priv->imsg_ring[mbox].size)
+ priv->imsg_ring[mbox].rx_slot = 0;
+
+out:
+ return rc;
+}
+
+/**
+ * tsi721_get_inb_message - Fetch inbound message from the Tsi721 MSG Queue
+ * @mport: Master port implementing the Inbound Messaging Engine
+ * @mbox: Inbound mailbox number
+ *
+ * Returns pointer to the message on success or NULL on failure.
+ */
+static void *tsi721_get_inb_message(struct rio_mport *mport, int mbox)
+{
+ struct tsi721_device *priv = mport->priv;
+ struct tsi721_imsg_desc *desc;
+ u32 rx_slot;
+ void *rx_virt = NULL;
+ u64 rx_phys;
+ void *buf = NULL;
+ u64 *free_ptr;
+ int ch = mbox + 4;
+ int msg_size;
+
+ if (!priv->imsg_init[mbox])
+ return NULL;
+
+ desc = priv->imsg_ring[mbox].imd_base;
+ desc += priv->imsg_ring[mbox].desc_rdptr;
+
+ if (!(le32_to_cpu(desc->msg_info) & TSI721_IMD_HO))
+ goto out;
+
+ rx_slot = priv->imsg_ring[mbox].rx_slot;
+ while (priv->imsg_ring[mbox].imq_base[rx_slot] == NULL) {
+ if (++rx_slot == priv->imsg_ring[mbox].size)
+ rx_slot = 0;
+ }
+
+ rx_phys = ((u64)le32_to_cpu(desc->bufptr_hi) << 32) |
+ le32_to_cpu(desc->bufptr_lo);
+
+ rx_virt = priv->imsg_ring[mbox].buf_base +
+ (rx_phys - (u64)priv->imsg_ring[mbox].buf_phys);
+
+ buf = priv->imsg_ring[mbox].imq_base[rx_slot];
+ msg_size = le32_to_cpu(desc->msg_info) & TSI721_IMD_BCOUNT;
+ if (msg_size == 0)
+ msg_size = RIO_MAX_MSG_SIZE;
+
+ memcpy(buf, rx_virt, msg_size);
+ priv->imsg_ring[mbox].imq_base[rx_slot] = NULL;
+
+ desc->msg_info &= cpu_to_le32(~TSI721_IMD_HO);
+ if (++priv->imsg_ring[mbox].desc_rdptr == priv->imsg_ring[mbox].size)
+ priv->imsg_ring[mbox].desc_rdptr = 0;
+
+ iowrite32(priv->imsg_ring[mbox].desc_rdptr,
+ priv->regs + TSI721_IBDMAC_DQRP(ch));
+
+ /* Return free buffer into the pointer list */
+ free_ptr = priv->imsg_ring[mbox].imfq_base;
+ free_ptr[priv->imsg_ring[mbox].fq_wrptr] = cpu_to_le64(rx_phys);
+
+ if (++priv->imsg_ring[mbox].fq_wrptr == priv->imsg_ring[mbox].size)
+ priv->imsg_ring[mbox].fq_wrptr = 0;
+
+ iowrite32(priv->imsg_ring[mbox].fq_wrptr,
+ priv->regs + TSI721_IBDMAC_FQWP(ch));
+out:
+ return buf;
+}
+
+/**
+ * tsi721_messages_init - Initialization of Messaging Engine
+ * @priv: pointer to tsi721 private data
+ *
+ * Configures Tsi721 messaging engine.
+ */
+static int tsi721_messages_init(struct tsi721_device *priv)
+{
+ int ch;
+
+ iowrite32(0, priv->regs + TSI721_SMSG_ECC_LOG);
+ iowrite32(0, priv->regs + TSI721_RETRY_GEN_CNT);
+ iowrite32(0, priv->regs + TSI721_RETRY_RX_CNT);
+
+ /* Set SRIO Message Request/Response Timeout */
+ iowrite32(TSI721_RQRPTO_VAL, priv->regs + TSI721_RQRPTO);
+
+ /* Initialize Inbound Messaging Engine Registers */
+ for (ch = 0; ch < TSI721_IMSG_CHNUM; ch++) {
+ /* Clear interrupt bits */
+ iowrite32(TSI721_IBDMAC_INT_MASK,
+ priv->regs + TSI721_IBDMAC_INT(ch));
+ /* Clear Status */
+ iowrite32(0, priv->regs + TSI721_IBDMAC_STS(ch));
+
+ iowrite32(TSI721_SMSG_ECC_COR_LOG_MASK,
+ priv->regs + TSI721_SMSG_ECC_COR_LOG(ch));
+ iowrite32(TSI721_SMSG_ECC_NCOR_MASK,
+ priv->regs + TSI721_SMSG_ECC_NCOR(ch));
+ }
+
+ return 0;
+}
+
+/**
+ * tsi721_disable_ints - disables all device interrupts
+ * @priv: pointer to tsi721 private data
+ */
+static void tsi721_disable_ints(struct tsi721_device *priv)
+{
+ int ch;
+
+ /* Disable all device level interrupts */
+ iowrite32(0, priv->regs + TSI721_DEV_INTE);
+
+ /* Disable all Device Channel interrupts */
+ iowrite32(0, priv->regs + TSI721_DEV_CHAN_INTE);
+
+ /* Disable all Inbound Msg Channel interrupts */
+ for (ch = 0; ch < TSI721_IMSG_CHNUM; ch++)
+ iowrite32(0, priv->regs + TSI721_IBDMAC_INTE(ch));
+
+ /* Disable all Outbound Msg Channel interrupts */
+ for (ch = 0; ch < TSI721_OMSG_CHNUM; ch++)
+ iowrite32(0, priv->regs + TSI721_OBDMAC_INTE(ch));
+
+ /* Disable all general messaging interrupts */
+ iowrite32(0, priv->regs + TSI721_SMSG_INTE);
+
+ /* Disable all BDMA Channel interrupts */
+ for (ch = 0; ch < TSI721_DMA_MAXCH; ch++)
+ iowrite32(0, priv->regs + TSI721_DMAC_INTE(ch));
+
+ /* Disable all general BDMA interrupts */
+ iowrite32(0, priv->regs + TSI721_BDMA_INTE);
+
+ /* Disable all SRIO Channel interrupts */
+ for (ch = 0; ch < TSI721_SRIO_MAXCH; ch++)
+ iowrite32(0, priv->regs + TSI721_SR_CHINTE(ch));
+
+ /* Disable all general SR2PC interrupts */
+ iowrite32(0, priv->regs + TSI721_SR2PC_GEN_INTE);
+
+ /* Disable all PC2SR interrupts */
+ iowrite32(0, priv->regs + TSI721_PC2SR_INTE);
+
+ /* Disable all I2C interrupts */
+ iowrite32(0, priv->regs + TSI721_I2C_INT_ENABLE);
+
+ /* Disable SRIO MAC interrupts */
+ iowrite32(0, priv->regs + TSI721_RIO_EM_INT_ENABLE);
+ iowrite32(0, priv->regs + TSI721_RIO_EM_DEV_INT_EN);
+}
+
+/**
+ * tsi721_setup_mport - Setup Tsi721 as RapidIO subsystem master port
+ * @priv: pointer to tsi721 private data
+ *
+ * Configures Tsi721 as RapidIO master port.
+ */
+static int __devinit tsi721_setup_mport(struct tsi721_device *priv)
+{
+ struct pci_dev *pdev = priv->pdev;
+ int err = 0;
+ struct rio_ops *ops;
+
+ struct rio_mport *mport;
+
+ ops = kzalloc(sizeof(struct rio_ops), GFP_KERNEL);
+ if (!ops) {
+ dev_dbg(&pdev->dev, "Unable to allocate memory for rio_ops\n");
+ return -ENOMEM;
+ }
+
+ ops->lcread = tsi721_lcread;
+ ops->lcwrite = tsi721_lcwrite;
+ ops->cread = tsi721_cread_dma;
+ ops->cwrite = tsi721_cwrite_dma;
+ ops->dsend = tsi721_dsend;
+ ops->open_inb_mbox = tsi721_open_inb_mbox;
+ ops->close_inb_mbox = tsi721_close_inb_mbox;
+ ops->open_outb_mbox = tsi721_open_outb_mbox;
+ ops->close_outb_mbox = tsi721_close_outb_mbox;
+ ops->add_outb_message = tsi721_add_outb_message;
+ ops->add_inb_buffer = tsi721_add_inb_buffer;
+ ops->get_inb_message = tsi721_get_inb_message;
+
+ mport = kzalloc(sizeof(struct rio_mport), GFP_KERNEL);
+ if (!mport) {
+ kfree(ops);
+ dev_dbg(&pdev->dev, "Unable to allocate memory for mport\n");
+ return -ENOMEM;
+ }
+
+ mport->ops = ops;
+ mport->index = 0;
+ mport->sys_size = 0; /* small system */
+ mport->phy_type = RIO_PHY_SERIAL;
+ mport->priv = (void *)priv;
+ mport->phys_efptr = 0x100;
+
+ INIT_LIST_HEAD(&mport->dbells);
+
+ rio_init_dbell_res(&mport->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff);
+ rio_init_mbox_res(&mport->riores[RIO_INB_MBOX_RESOURCE], 0, 3);
+ rio_init_mbox_res(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 0, 3);
+ strcpy(mport->name, "Tsi721 mport");
+
+ /* Hook up interrupt handler */
+
+#ifdef CONFIG_PCI_MSI
+ if (!tsi721_enable_msix(priv))
+ priv->flags |= TSI721_USING_MSIX;
+ else if (!pci_enable_msi(pdev))
+ priv->flags |= TSI721_USING_MSI;
+ else
+ dev_info(&pdev->dev,
+ "MSI/MSI-X is not available. Using legacy INTx.\n");
+#endif /* CONFIG_PCI_MSI */
+
+ err = tsi721_request_irq(mport);
+
+ if (!err) {
+ tsi721_interrupts_init(priv);
+ ops->pwenable = tsi721_pw_enable;
+ } else
+ dev_err(&pdev->dev, "Unable to get assigned PCI IRQ "
+ "vector %02X err=0x%x\n", pdev->irq, err);
+
+ /* Enable SRIO link */
+ iowrite32(ioread32(priv->regs + TSI721_DEVCTL) |
+ TSI721_DEVCTL_SRBOOT_CMPL,
+ priv->regs + TSI721_DEVCTL);
+
+ rio_register_mport(mport);
+ priv->mport = mport;
+
+ if (mport->host_deviceid >= 0)
+ iowrite32(RIO_PORT_GEN_HOST | RIO_PORT_GEN_MASTER |
+ RIO_PORT_GEN_DISCOVERED,
+ priv->regs + (0x100 + RIO_PORT_GEN_CTL_CSR));
+ else
+ iowrite32(0, priv->regs + (0x100 + RIO_PORT_GEN_CTL_CSR));
+
+ return 0;
+}
+
+static int __devinit tsi721_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ struct tsi721_device *priv;
+ int i, cap;
+ int err;
+ u32 regval;
+
+ priv = kzalloc(sizeof(struct tsi721_device), GFP_KERNEL);
+ if (priv == NULL) {
+ dev_err(&pdev->dev, "Failed to allocate memory for device\n");
+ err = -ENOMEM;
+ goto err_exit;
+ }
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to enable PCI device\n");
+ goto err_clean;
+ }
+
+ priv->pdev = pdev;
+
+#ifdef DEBUG
+ for (i = 0; i <= PCI_STD_RESOURCE_END; i++) {
+ dev_dbg(&pdev->dev, "res[%d] @ 0x%llx (0x%lx, 0x%lx)\n",
+ i, (unsigned long long)pci_resource_start(pdev, i),
+ (unsigned long)pci_resource_len(pdev, i),
+ pci_resource_flags(pdev, i));
+ }
+#endif
+ /*
+ * Verify BAR configuration
+ */
+
+ /* BAR_0 (registers) must be 512KB+ in 32-bit address space */
+ if (!(pci_resource_flags(pdev, BAR_0) & IORESOURCE_MEM) ||
+ pci_resource_flags(pdev, BAR_0) & IORESOURCE_MEM_64 ||
+ pci_resource_len(pdev, BAR_0) < TSI721_REG_SPACE_SIZE) {
+ dev_err(&pdev->dev,
+ "Missing or misconfigured CSR BAR0, aborting.\n");
+ err = -ENODEV;
+ goto err_disable_pdev;
+ }
+
+ /* BAR_1 (outbound doorbells) must be 16MB+ in 32-bit address space */
+ if (!(pci_resource_flags(pdev, BAR_1) & IORESOURCE_MEM) ||
+ pci_resource_flags(pdev, BAR_1) & IORESOURCE_MEM_64 ||
+ pci_resource_len(pdev, BAR_1) < TSI721_DB_WIN_SIZE) {
+ dev_err(&pdev->dev,
+ "Missing or misconfigured Doorbell BAR1, aborting.\n");
+ err = -ENODEV;
+ goto err_disable_pdev;
+ }
+
+ /*
+ * BAR_2 and BAR_4 (outbound translation) must be in 64-bit PCIe address
+ * space.
+ * NOTE: BAR_2 and BAR_4 are not used by this version of driver.
+ * It may be a good idea to keep them disabled using HW configuration
+ * to save PCI memory space.
+ */
+ if ((pci_resource_flags(pdev, BAR_2) & IORESOURCE_MEM) &&
+ (pci_resource_flags(pdev, BAR_2) & IORESOURCE_MEM_64)) {
+ dev_info(&pdev->dev, "Outbound BAR2 is not used but enabled.\n");
+ }
+
+ if ((pci_resource_flags(pdev, BAR_4) & IORESOURCE_MEM) &&
+ (pci_resource_flags(pdev, BAR_4) & IORESOURCE_MEM_64)) {
+ dev_info(&pdev->dev, "Outbound BAR4 is not used but enabled.\n");
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(&pdev->dev, "Cannot obtain PCI resources, "
+ "aborting.\n");
+ goto err_disable_pdev;
+ }
+
+ pci_set_master(pdev);
+
+ priv->regs = pci_ioremap_bar(pdev, BAR_0);
+ if (!priv->regs) {
+ dev_err(&pdev->dev,
+ "Unable to map device registers space, aborting\n");
+ err = -ENOMEM;
+ goto err_free_res;
+ }
+
+ priv->odb_base = pci_ioremap_bar(pdev, BAR_1);
+ if (!priv->odb_base) {
+ dev_err(&pdev->dev,
+ "Unable to map outbound doorbells space, aborting\n");
+ err = -ENOMEM;
+ goto err_unmap_bars;
+ }
+
+ /* Configure DMA attributes. */
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+ if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) {
+ dev_info(&pdev->dev, "Unable to set DMA mask\n");
+ goto err_unmap_bars;
+ }
+
+ if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
+ dev_info(&pdev->dev, "Unable to set consistent DMA mask\n");
+ } else {
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err)
+ dev_info(&pdev->dev, "Unable to set consistent DMA mask\n");
+ }
+
+ cap = pci_pcie_cap(pdev);
+ BUG_ON(cap == 0);
+
+ /* Clear "no snoop" and "relaxed ordering" bits, use default MRRS. */
+ pci_read_config_dword(pdev, cap + PCI_EXP_DEVCTL, &regval);
+ regval &= ~(PCI_EXP_DEVCTL_READRQ | PCI_EXP_DEVCTL_RELAX_EN |
+ PCI_EXP_DEVCTL_NOSNOOP_EN);
+ regval |= 0x2 << MAX_READ_REQUEST_SZ_SHIFT;
+ pci_write_config_dword(pdev, cap + PCI_EXP_DEVCTL, regval);
+
+ /* Adjust PCIe completion timeout. */
+ pci_read_config_dword(pdev, cap + PCI_EXP_DEVCTL2, &regval);
+ regval &= ~(0x0f);
+ pci_write_config_dword(pdev, cap + PCI_EXP_DEVCTL2, regval | 0x2);
+
+ /*
+ * FIXUP: correct offsets of MSI-X tables in the MSI-X Capability Block
+ */
+ pci_write_config_dword(pdev, TSI721_PCIECFG_EPCTL, 0x01);
+ pci_write_config_dword(pdev, TSI721_PCIECFG_MSIXTBL,
+ TSI721_MSIXTBL_OFFSET);
+ pci_write_config_dword(pdev, TSI721_PCIECFG_MSIXPBA,
+ TSI721_MSIXPBA_OFFSET);
+ pci_write_config_dword(pdev, TSI721_PCIECFG_EPCTL, 0);
+ /* End of FIXUP */
+
+ tsi721_disable_ints(priv);
+
+ tsi721_init_pc2sr_mapping(priv);
+ tsi721_init_sr2pc_mapping(priv);
+
+ if (tsi721_bdma_init(priv)) {
+ dev_err(&pdev->dev, "BDMA initialization failed, aborting\n");
+ err = -ENOMEM;
+ goto err_unmap_bars;
+ }
+
+ err = tsi721_doorbell_init(priv);
+ if (err)
+ goto err_free_bdma;
+
+ tsi721_port_write_init(priv);
+
+ err = tsi721_messages_init(priv);
+ if (err)
+ goto err_free_consistent;
+
+ err = tsi721_setup_mport(priv);
+ if (err)
+ goto err_free_consistent;
+
+ return 0;
+
+err_free_consistent:
+ tsi721_doorbell_free(priv);
+err_free_bdma:
+ tsi721_bdma_free(priv);
+err_unmap_bars:
+ if (priv->regs)
+ iounmap(priv->regs);
+ if (priv->odb_base)
+ iounmap(priv->odb_base);
+err_free_res:
+ pci_release_regions(pdev);
+ pci_clear_master(pdev);
+err_disable_pdev:
+ pci_disable_device(pdev);
+err_clean:
+ kfree(priv);
+err_exit:
+ return err;
+}
+
+static DEFINE_PCI_DEVICE_TABLE(tsi721_pci_tbl) = {
+ { PCI_DEVICE(PCI_VENDOR_ID_IDT, PCI_DEVICE_ID_TSI721) },
+ { 0, } /* terminate list */
+};
+
+MODULE_DEVICE_TABLE(pci, tsi721_pci_tbl);
+
+static struct pci_driver tsi721_driver = {
+ .name = "tsi721",
+ .id_table = tsi721_pci_tbl,
+ .probe = tsi721_probe,
+};
+
+static int __init tsi721_init(void)
+{
+ return pci_register_driver(&tsi721_driver);
+}
+
+static void __exit tsi721_exit(void)
+{
+ pci_unregister_driver(&tsi721_driver);
+}
+
+device_initcall(tsi721_init);
diff --git a/drivers/rapidio/devices/tsi721.h b/drivers/rapidio/devices/tsi721.h
new file mode 100644
index 00000000..1c226b31
--- /dev/null
+++ b/drivers/rapidio/devices/tsi721.h
@@ -0,0 +1,768 @@
+/*
+ * Tsi721 PCIExpress-to-SRIO bridge definitions
+ *
+ * Copyright 2011, Integrated Device Technology, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __TSI721_H
+#define __TSI721_H
+
+#define DRV_NAME "tsi721"
+
+#define DEFAULT_HOPCOUNT 0xff
+#define DEFAULT_DESTID 0xff
+
+/* PCI device ID */
+#define PCI_DEVICE_ID_TSI721 0x80ab
+
+#define BAR_0 0
+#define BAR_1 1
+#define BAR_2 2
+#define BAR_4 4
+
+#define TSI721_PC2SR_BARS 2
+#define TSI721_PC2SR_WINS 8
+#define TSI721_PC2SR_ZONES 8
+#define TSI721_MAINT_WIN 0 /* Window for outbound maintenance requests */
+#define IDB_QUEUE 0 /* Inbound Doorbell Queue to use */
+#define IDB_QSIZE 512 /* Inbound Doorbell Queue size */
+
+/* Memory space sizes */
+#define TSI721_REG_SPACE_SIZE (512 * 1024) /* 512K */
+#define TSI721_DB_WIN_SIZE (16 * 1024 * 1024) /* 16MB */
+
+#define RIO_TT_CODE_8 0x00000000
+#define RIO_TT_CODE_16 0x00000001
+
+#define TSI721_DMA_MAXCH 8
+#define TSI721_DMA_MINSTSSZ 32
+#define TSI721_DMA_STSBLKSZ 8
+
+#define TSI721_SRIO_MAXCH 8
+
+#define DBELL_SID(buf) (((u8)buf[2] << 8) | (u8)buf[3])
+#define DBELL_TID(buf) (((u8)buf[4] << 8) | (u8)buf[5])
+#define DBELL_INF(buf) (((u8)buf[0] << 8) | (u8)buf[1])
+
+#define TSI721_RIO_PW_MSG_SIZE 16 /* Tsi721 saves only 16 bytes of PW msg */
+
+/* Register definitions */
+
+/*
+ * Registers in PCIe configuration space
+ */
+
+#define TSI721_PCIECFG_MSIXTBL 0x0a4
+#define TSI721_MSIXTBL_OFFSET 0x2c000
+#define TSI721_PCIECFG_MSIXPBA 0x0a8
+#define TSI721_MSIXPBA_OFFSET 0x2a000
+#define TSI721_PCIECFG_EPCTL 0x400
+
+#define MAX_READ_REQUEST_SZ_SHIFT 12
+
+/*
+ * Event Management Registers
+ */
+
+#define TSI721_RIO_EM_INT_STAT 0x10910
+#define TSI721_RIO_EM_INT_STAT_PW_RX 0x00010000
+
+#define TSI721_RIO_EM_INT_ENABLE 0x10914
+#define TSI721_RIO_EM_INT_ENABLE_PW_RX 0x00010000
+
+#define TSI721_RIO_EM_DEV_INT_EN 0x10930
+#define TSI721_RIO_EM_DEV_INT_EN_INT 0x00000001
+
+/*
+ * Port-Write Block Registers
+ */
+
+#define TSI721_RIO_PW_CTL 0x10a04
+#define TSI721_RIO_PW_CTL_PW_TIMER 0xf0000000
+#define TSI721_RIO_PW_CTL_PWT_DIS (0 << 28)
+#define TSI721_RIO_PW_CTL_PWT_103 (1 << 28)
+#define TSI721_RIO_PW_CTL_PWT_205 (1 << 29)
+#define TSI721_RIO_PW_CTL_PWT_410 (1 << 30)
+#define TSI721_RIO_PW_CTL_PWT_820 (1 << 31)
+#define TSI721_RIO_PW_CTL_PWC_MODE 0x01000000
+#define TSI721_RIO_PW_CTL_PWC_CONT 0x00000000
+#define TSI721_RIO_PW_CTL_PWC_REL 0x01000000
+
+#define TSI721_RIO_PW_RX_STAT 0x10a10
+#define TSI721_RIO_PW_RX_STAT_WR_SIZE 0x0000f000
+#define TSI_RIO_PW_RX_STAT_WDPTR 0x00000100
+#define TSI721_RIO_PW_RX_STAT_PW_SHORT 0x00000008
+#define TSI721_RIO_PW_RX_STAT_PW_TRUNC 0x00000004
+#define TSI721_RIO_PW_RX_STAT_PW_DISC 0x00000002
+#define TSI721_RIO_PW_RX_STAT_PW_VAL 0x00000001
+
+#define TSI721_RIO_PW_RX_CAPT(x) (0x10a20 + (x)*4)
+
+/*
+ * Inbound Doorbells
+ */
+
+#define TSI721_IDB_ENTRY_SIZE 64
+
+#define TSI721_IDQ_CTL(x) (0x20000 + (x) * 0x1000)
+#define TSI721_IDQ_SUSPEND 0x00000002
+#define TSI721_IDQ_INIT 0x00000001
+
+#define TSI721_IDQ_STS(x) (0x20004 + (x) * 0x1000)
+#define TSI721_IDQ_RUN 0x00200000
+
+#define TSI721_IDQ_MASK(x) (0x20008 + (x) * 0x1000)
+#define TSI721_IDQ_MASK_MASK 0xffff0000
+#define TSI721_IDQ_MASK_PATT 0x0000ffff
+
+#define TSI721_IDQ_RP(x) (0x2000c + (x) * 0x1000)
+#define TSI721_IDQ_RP_PTR 0x0007ffff
+
+#define TSI721_IDQ_WP(x) (0x20010 + (x) * 0x1000)
+#define TSI721_IDQ_WP_PTR 0x0007ffff
+
+#define TSI721_IDQ_BASEL(x) (0x20014 + (x) * 0x1000)
+#define TSI721_IDQ_BASEL_ADDR 0xffffffc0
+#define TSI721_IDQ_BASEU(x) (0x20018 + (x) * 0x1000)
+#define TSI721_IDQ_SIZE(x) (0x2001c + (x) * 0x1000)
+#define TSI721_IDQ_SIZE_VAL(size) (__fls(size) - 4)
+#define TSI721_IDQ_SIZE_MIN 512
+#define TSI721_IDQ_SIZE_MAX (512 * 1024)
+
+#define TSI721_SR_CHINT(x) (0x20040 + (x) * 0x1000)
+#define TSI721_SR_CHINTE(x) (0x20044 + (x) * 0x1000)
+#define TSI721_SR_CHINTSET(x) (0x20048 + (x) * 0x1000)
+#define TSI721_SR_CHINT_ODBOK 0x00000020
+#define TSI721_SR_CHINT_IDBQRCV 0x00000010
+#define TSI721_SR_CHINT_SUSP 0x00000008
+#define TSI721_SR_CHINT_ODBTO 0x00000004
+#define TSI721_SR_CHINT_ODBRTRY 0x00000002
+#define TSI721_SR_CHINT_ODBERR 0x00000001
+#define TSI721_SR_CHINT_ALL 0x0000003f
+
+#define TSI721_IBWIN_NUM 8
+
+#define TSI721_IBWINLB(x) (0x29000 + (x) * 0x20)
+#define TSI721_IBWINLB_BA 0xfffff000
+#define TSI721_IBWINLB_WEN 0x00000001
+
+#define TSI721_SR2PC_GEN_INTE 0x29800
+#define TSI721_SR2PC_PWE 0x29804
+#define TSI721_SR2PC_GEN_INT 0x29808
+
+#define TSI721_DEV_INTE 0x29840
+#define TSI721_DEV_INT 0x29844
+#define TSI721_DEV_INTSET 0x29848
+#define TSI721_DEV_INT_SMSG_CH 0x00000800
+#define TSI721_DEV_INT_SMSG_NCH 0x00000400
+#define TSI721_DEV_INT_SR2PC_CH 0x00000200
+#define TSI721_DEV_INT_SRIO 0x00000020
+
+#define TSI721_DEV_CHAN_INTE 0x2984c
+#define TSI721_DEV_CHAN_INT 0x29850
+
+#define TSI721_INT_SR2PC_CHAN_M 0xff000000
+#define TSI721_INT_SR2PC_CHAN(x) (1 << (24 + (x)))
+#define TSI721_INT_IMSG_CHAN_M 0x00ff0000
+#define TSI721_INT_IMSG_CHAN(x) (1 << (16 + (x)))
+#define TSI721_INT_OMSG_CHAN_M 0x0000ff00
+#define TSI721_INT_OMSG_CHAN(x) (1 << (8 + (x)))
+
+/*
+ * PC2SR block registers
+ */
+#define TSI721_OBWIN_NUM TSI721_PC2SR_WINS
+
+#define TSI721_OBWINLB(x) (0x40000 + (x) * 0x20)
+#define TSI721_OBWINLB_BA 0xffff8000
+#define TSI721_OBWINLB_WEN 0x00000001
+
+#define TSI721_OBWINUB(x) (0x40004 + (x) * 0x20)
+
+#define TSI721_OBWINSZ(x) (0x40008 + (x) * 0x20)
+#define TSI721_OBWINSZ_SIZE 0x00001f00
+#define TSI721_OBWIN_SIZE(size) (__fls(size) - 15)
+
+#define TSI721_ZONE_SEL 0x41300
+#define TSI721_ZONE_SEL_RD_WRB 0x00020000
+#define TSI721_ZONE_SEL_GO 0x00010000
+#define TSI721_ZONE_SEL_WIN 0x00000038
+#define TSI721_ZONE_SEL_ZONE 0x00000007
+
+#define TSI721_LUT_DATA0 0x41304
+#define TSI721_LUT_DATA0_ADD 0xfffff000
+#define TSI721_LUT_DATA0_RDTYPE 0x00000f00
+#define TSI721_LUT_DATA0_NREAD 0x00000100
+#define TSI721_LUT_DATA0_MNTRD 0x00000200
+#define TSI721_LUT_DATA0_RDCRF 0x00000020
+#define TSI721_LUT_DATA0_WRCRF 0x00000010
+#define TSI721_LUT_DATA0_WRTYPE 0x0000000f
+#define TSI721_LUT_DATA0_NWR 0x00000001
+#define TSI721_LUT_DATA0_MNTWR 0x00000002
+#define TSI721_LUT_DATA0_NWR_R 0x00000004
+
+#define TSI721_LUT_DATA1 0x41308
+
+#define TSI721_LUT_DATA2 0x4130c
+#define TSI721_LUT_DATA2_HC 0xff000000
+#define TSI721_LUT_DATA2_ADD65 0x000c0000
+#define TSI721_LUT_DATA2_TT 0x00030000
+#define TSI721_LUT_DATA2_DSTID 0x0000ffff
+
+#define TSI721_PC2SR_INTE 0x41310
+
+#define TSI721_DEVCTL 0x48004
+#define TSI721_DEVCTL_SRBOOT_CMPL 0x00000004
+
+#define TSI721_I2C_INT_ENABLE 0x49120
+
+/*
+ * Block DMA Engine Registers
+ * x = 0..7
+ */
+
+#define TSI721_DMAC_DWRCNT(x) (0x51000 + (x) * 0x1000)
+#define TSI721_DMAC_DRDCNT(x) (0x51004 + (x) * 0x1000)
+
+#define TSI721_DMAC_CTL(x) (0x51008 + (x) * 0x1000)
+#define TSI721_DMAC_CTL_SUSP 0x00000002
+#define TSI721_DMAC_CTL_INIT 0x00000001
+
+#define TSI721_DMAC_INT(x) (0x5100c + (x) * 0x1000)
+#define TSI721_DMAC_INT_STFULL 0x00000010
+#define TSI721_DMAC_INT_DONE 0x00000008
+#define TSI721_DMAC_INT_SUSP 0x00000004
+#define TSI721_DMAC_INT_ERR 0x00000002
+#define TSI721_DMAC_INT_IOFDONE 0x00000001
+#define TSI721_DMAC_INT_ALL 0x0000001f
+
+#define TSI721_DMAC_INTSET(x) (0x51010 + (x) * 0x1000)
+
+#define TSI721_DMAC_STS(x) (0x51014 + (x) * 0x1000)
+#define TSI721_DMAC_STS_ABORT 0x00400000
+#define TSI721_DMAC_STS_RUN 0x00200000
+#define TSI721_DMAC_STS_CS 0x001f0000
+
+#define TSI721_DMAC_INTE(x) (0x51018 + (x) * 0x1000)
+
+#define TSI721_DMAC_DPTRL(x) (0x51024 + (x) * 0x1000)
+#define TSI721_DMAC_DPTRL_MASK 0xffffffe0
+
+#define TSI721_DMAC_DPTRH(x) (0x51028 + (x) * 0x1000)
+
+#define TSI721_DMAC_DSBL(x) (0x5102c + (x) * 0x1000)
+#define TSI721_DMAC_DSBL_MASK 0xffffffc0
+
+#define TSI721_DMAC_DSBH(x) (0x51030 + (x) * 0x1000)
+
+#define TSI721_DMAC_DSSZ(x) (0x51034 + (x) * 0x1000)
+#define TSI721_DMAC_DSSZ_SIZE_M 0x0000000f
+#define TSI721_DMAC_DSSZ_SIZE(size) (__fls(size) - 4)
+
+
+#define TSI721_DMAC_DSRP(x) (0x51038 + (x) * 0x1000)
+#define TSI721_DMAC_DSRP_MASK 0x0007ffff
+
+#define TSI721_DMAC_DSWP(x) (0x5103c + (x) * 0x1000)
+#define TSI721_DMAC_DSWP_MASK 0x0007ffff
+
+#define TSI721_BDMA_INTE 0x5f000
+
+/*
+ * Messaging definitions
+ */
+#define TSI721_MSG_BUFFER_SIZE RIO_MAX_MSG_SIZE
+#define TSI721_MSG_MAX_SIZE RIO_MAX_MSG_SIZE
+#define TSI721_IMSG_MAXCH 8
+#define TSI721_IMSG_CHNUM TSI721_IMSG_MAXCH
+#define TSI721_IMSGD_MIN_RING_SIZE 32
+#define TSI721_IMSGD_RING_SIZE 512
+
+#define TSI721_OMSG_CHNUM 4 /* One channel per MBOX */
+#define TSI721_OMSGD_MIN_RING_SIZE 32
+#define TSI721_OMSGD_RING_SIZE 512
+
+/*
+ * Outbound Messaging Engine Registers
+ * x = 0..7
+ */
+
+#define TSI721_OBDMAC_DWRCNT(x) (0x61000 + (x) * 0x1000)
+
+#define TSI721_OBDMAC_DRDCNT(x) (0x61004 + (x) * 0x1000)
+
+#define TSI721_OBDMAC_CTL(x) (0x61008 + (x) * 0x1000)
+#define TSI721_OBDMAC_CTL_MASK 0x00000007
+#define TSI721_OBDMAC_CTL_RETRY_THR 0x00000004
+#define TSI721_OBDMAC_CTL_SUSPEND 0x00000002
+#define TSI721_OBDMAC_CTL_INIT 0x00000001
+
+#define TSI721_OBDMAC_INT(x) (0x6100c + (x) * 0x1000)
+#define TSI721_OBDMAC_INTSET(x) (0x61010 + (x) * 0x1000)
+#define TSI721_OBDMAC_INTE(x) (0x61018 + (x) * 0x1000)
+#define TSI721_OBDMAC_INT_MASK 0x0000001F
+#define TSI721_OBDMAC_INT_ST_FULL 0x00000010
+#define TSI721_OBDMAC_INT_DONE 0x00000008
+#define TSI721_OBDMAC_INT_SUSPENDED 0x00000004
+#define TSI721_OBDMAC_INT_ERROR 0x00000002
+#define TSI721_OBDMAC_INT_IOF_DONE 0x00000001
+#define TSI721_OBDMAC_INT_ALL TSI721_OBDMAC_INT_MASK
+
+#define TSI721_OBDMAC_STS(x) (0x61014 + (x) * 0x1000)
+#define TSI721_OBDMAC_STS_MASK 0x007f0000
+#define TSI721_OBDMAC_STS_ABORT 0x00400000
+#define TSI721_OBDMAC_STS_RUN 0x00200000
+#define TSI721_OBDMAC_STS_CS 0x001f0000
+
+#define TSI721_OBDMAC_PWE(x) (0x6101c + (x) * 0x1000)
+#define TSI721_OBDMAC_PWE_MASK 0x00000002
+#define TSI721_OBDMAC_PWE_ERROR_EN 0x00000002
+
+#define TSI721_OBDMAC_DPTRL(x) (0x61020 + (x) * 0x1000)
+#define TSI721_OBDMAC_DPTRL_MASK 0xfffffff0
+
+#define TSI721_OBDMAC_DPTRH(x) (0x61024 + (x) * 0x1000)
+#define TSI721_OBDMAC_DPTRH_MASK 0xffffffff
+
+#define TSI721_OBDMAC_DSBL(x) (0x61040 + (x) * 0x1000)
+#define TSI721_OBDMAC_DSBL_MASK 0xffffffc0
+
+#define TSI721_OBDMAC_DSBH(x) (0x61044 + (x) * 0x1000)
+#define TSI721_OBDMAC_DSBH_MASK 0xffffffff
+
+#define TSI721_OBDMAC_DSSZ(x) (0x61048 + (x) * 0x1000)
+#define TSI721_OBDMAC_DSSZ_MASK 0x0000000f
+
+#define TSI721_OBDMAC_DSRP(x) (0x6104c + (x) * 0x1000)
+#define TSI721_OBDMAC_DSRP_MASK 0x0007ffff
+
+#define TSI721_OBDMAC_DSWP(x) (0x61050 + (x) * 0x1000)
+#define TSI721_OBDMAC_DSWP_MASK 0x0007ffff
+
+#define TSI721_RQRPTO 0x60010
+#define TSI721_RQRPTO_MASK 0x00ffffff
+#define TSI721_RQRPTO_VAL 400 /* Response TO value */
+
+/*
+ * Inbound Messaging Engine Registers
+ * x = 0..7
+ */
+
+#define TSI721_IB_DEVID_GLOBAL 0xffff
+#define TSI721_IBDMAC_FQBL(x) (0x61200 + (x) * 0x1000)
+#define TSI721_IBDMAC_FQBL_MASK 0xffffffc0
+
+#define TSI721_IBDMAC_FQBH(x) (0x61204 + (x) * 0x1000)
+#define TSI721_IBDMAC_FQBH_MASK 0xffffffff
+
+#define TSI721_IBDMAC_FQSZ_ENTRY_INX TSI721_IMSGD_RING_SIZE
+#define TSI721_IBDMAC_FQSZ(x) (0x61208 + (x) * 0x1000)
+#define TSI721_IBDMAC_FQSZ_MASK 0x0000000f
+
+#define TSI721_IBDMAC_FQRP(x) (0x6120c + (x) * 0x1000)
+#define TSI721_IBDMAC_FQRP_MASK 0x0007ffff
+
+#define TSI721_IBDMAC_FQWP(x) (0x61210 + (x) * 0x1000)
+#define TSI721_IBDMAC_FQWP_MASK 0x0007ffff
+
+#define TSI721_IBDMAC_FQTH(x) (0x61214 + (x) * 0x1000)
+#define TSI721_IBDMAC_FQTH_MASK 0x0007ffff
+
+#define TSI721_IB_DEVID 0x60020
+#define TSI721_IB_DEVID_MASK 0x0000ffff
+
+#define TSI721_IBDMAC_CTL(x) (0x61240 + (x) * 0x1000)
+#define TSI721_IBDMAC_CTL_MASK 0x00000003
+#define TSI721_IBDMAC_CTL_SUSPEND 0x00000002
+#define TSI721_IBDMAC_CTL_INIT 0x00000001
+
+#define TSI721_IBDMAC_STS(x) (0x61244 + (x) * 0x1000)
+#define TSI721_IBDMAC_STS_MASK 0x007f0000
+#define TSI721_IBSMAC_STS_ABORT 0x00400000
+#define TSI721_IBSMAC_STS_RUN 0x00200000
+#define TSI721_IBSMAC_STS_CS 0x001f0000
+
+#define TSI721_IBDMAC_INT(x) (0x61248 + (x) * 0x1000)
+#define TSI721_IBDMAC_INTSET(x) (0x6124c + (x) * 0x1000)
+#define TSI721_IBDMAC_INTE(x) (0x61250 + (x) * 0x1000)
+#define TSI721_IBDMAC_INT_MASK 0x0000100f
+#define TSI721_IBDMAC_INT_SRTO 0x00001000
+#define TSI721_IBDMAC_INT_SUSPENDED 0x00000008
+#define TSI721_IBDMAC_INT_PC_ERROR 0x00000004
+#define TSI721_IBDMAC_INT_FQ_LOW 0x00000002
+#define TSI721_IBDMAC_INT_DQ_RCV 0x00000001
+#define TSI721_IBDMAC_INT_ALL TSI721_IBDMAC_INT_MASK
+
+#define TSI721_IBDMAC_PWE(x) (0x61254 + (x) * 0x1000)
+#define TSI721_IBDMAC_PWE_MASK 0x00001700
+#define TSI721_IBDMAC_PWE_SRTO 0x00001000
+#define TSI721_IBDMAC_PWE_ILL_FMT 0x00000400
+#define TSI721_IBDMAC_PWE_ILL_DEC 0x00000200
+#define TSI721_IBDMAC_PWE_IMP_SP 0x00000100
+
+#define TSI721_IBDMAC_DQBL(x) (0x61300 + (x) * 0x1000)
+#define TSI721_IBDMAC_DQBL_MASK 0xffffffc0
+#define TSI721_IBDMAC_DQBL_ADDR 0xffffffc0
+
+#define TSI721_IBDMAC_DQBH(x) (0x61304 + (x) * 0x1000)
+#define TSI721_IBDMAC_DQBH_MASK 0xffffffff
+
+#define TSI721_IBDMAC_DQRP(x) (0x61308 + (x) * 0x1000)
+#define TSI721_IBDMAC_DQRP_MASK 0x0007ffff
+
+#define TSI721_IBDMAC_DQWR(x) (0x6130c + (x) * 0x1000)
+#define TSI721_IBDMAC_DQWR_MASK 0x0007ffff
+
+#define TSI721_IBDMAC_DQSZ(x) (0x61314 + (x) * 0x1000)
+#define TSI721_IBDMAC_DQSZ_MASK 0x0000000f
+
+/*
+ * Messaging Engine Interrupts
+ */
+
+#define TSI721_SMSG_PWE 0x6a004
+
+#define TSI721_SMSG_INTE 0x6a000
+#define TSI721_SMSG_INT 0x6a008
+#define TSI721_SMSG_INTSET 0x6a010
+#define TSI721_SMSG_INT_MASK 0x0086ffff
+#define TSI721_SMSG_INT_UNS_RSP 0x00800000
+#define TSI721_SMSG_INT_ECC_NCOR 0x00040000
+#define TSI721_SMSG_INT_ECC_COR 0x00020000
+#define TSI721_SMSG_INT_ECC_NCOR_CH 0x0000ff00
+#define TSI721_SMSG_INT_ECC_COR_CH 0x000000ff
+
+#define TSI721_SMSG_ECC_LOG 0x6a014
+#define TSI721_SMSG_ECC_LOG_MASK 0x00070007
+#define TSI721_SMSG_ECC_LOG_ECC_NCOR_M 0x00070000
+#define TSI721_SMSG_ECC_LOG_ECC_COR_M 0x00000007
+
+#define TSI721_RETRY_GEN_CNT 0x6a100
+#define TSI721_RETRY_GEN_CNT_MASK 0xffffffff
+
+#define TSI721_RETRY_RX_CNT 0x6a104
+#define TSI721_RETRY_RX_CNT_MASK 0xffffffff
+
+#define TSI721_SMSG_ECC_COR_LOG(x) (0x6a300 + (x) * 4)
+#define TSI721_SMSG_ECC_COR_LOG_MASK 0x000000ff
+
+#define TSI721_SMSG_ECC_NCOR(x) (0x6a340 + (x) * 4)
+#define TSI721_SMSG_ECC_NCOR_MASK 0x000000ff
+
+/*
+ * Block DMA Descriptors
+ */
+
+struct tsi721_dma_desc {
+ __le32 type_id;
+
+#define TSI721_DMAD_DEVID 0x0000ffff
+#define TSI721_DMAD_CRF 0x00010000
+#define TSI721_DMAD_PRIO 0x00060000
+#define TSI721_DMAD_RTYPE 0x00780000
+#define TSI721_DMAD_IOF 0x08000000
+#define TSI721_DMAD_DTYPE 0xe0000000
+
+ __le32 bcount;
+
+#define TSI721_DMAD_BCOUNT1 0x03ffffff /* if DTYPE == 1 */
+#define TSI721_DMAD_BCOUNT2 0x0000000f /* if DTYPE == 2 */
+#define TSI721_DMAD_TT 0x0c000000
+#define TSI721_DMAD_RADDR0 0xc0000000
+
+ union {
+ __le32 raddr_lo; /* if DTYPE == (1 || 2) */
+ __le32 next_lo; /* if DTYPE == 3 */
+ };
+
+#define TSI721_DMAD_CFGOFF 0x00ffffff
+#define TSI721_DMAD_HOPCNT 0xff000000
+
+ union {
+ __le32 raddr_hi; /* if DTYPE == (1 || 2) */
+ __le32 next_hi; /* if DTYPE == 3 */
+ };
+
+ union {
+ struct { /* if DTYPE == 1 */
+ __le32 bufptr_lo;
+ __le32 bufptr_hi;
+ __le32 s_dist;
+ __le32 s_size;
+ } t1;
+ __le32 data[4]; /* if DTYPE == 2 */
+ u32 reserved[4]; /* if DTYPE == 3 */
+ };
+} __aligned(32);
+
+/*
+ * Inbound Messaging Descriptor
+ */
+struct tsi721_imsg_desc {
+ __le32 type_id;
+
+#define TSI721_IMD_DEVID 0x0000ffff
+#define TSI721_IMD_CRF 0x00010000
+#define TSI721_IMD_PRIO 0x00060000
+#define TSI721_IMD_TT 0x00180000
+#define TSI721_IMD_DTYPE 0xe0000000
+
+ __le32 msg_info;
+
+#define TSI721_IMD_BCOUNT 0x00000ff8
+#define TSI721_IMD_SSIZE 0x0000f000
+#define TSI721_IMD_LETER 0x00030000
+#define TSI721_IMD_XMBOX 0x003c0000
+#define TSI721_IMD_MBOX 0x00c00000
+#define TSI721_IMD_CS 0x78000000
+#define TSI721_IMD_HO 0x80000000
+
+ __le32 bufptr_lo;
+ __le32 bufptr_hi;
+ u32 reserved[12];
+
+} __aligned(64);
+
+/*
+ * Outbound Messaging Descriptor
+ */
+struct tsi721_omsg_desc {
+ __le32 type_id;
+
+#define TSI721_OMD_DEVID 0x0000ffff
+#define TSI721_OMD_CRF 0x00010000
+#define TSI721_OMD_PRIO 0x00060000
+#define TSI721_OMD_IOF 0x08000000
+#define TSI721_OMD_DTYPE 0xe0000000
+#define TSI721_OMD_RSRVD 0x17f80000
+
+ __le32 msg_info;
+
+#define TSI721_OMD_BCOUNT 0x00000ff8
+#define TSI721_OMD_SSIZE 0x0000f000
+#define TSI721_OMD_LETER 0x00030000
+#define TSI721_OMD_XMBOX 0x003c0000
+#define TSI721_OMD_MBOX 0x00c00000
+#define TSI721_OMD_TT 0x0c000000
+
+ union {
+ __le32 bufptr_lo; /* if DTYPE == 4 */
+ __le32 next_lo; /* if DTYPE == 5 */
+ };
+
+ union {
+ __le32 bufptr_hi; /* if DTYPE == 4 */
+ __le32 next_hi; /* if DTYPE == 5 */
+ };
+
+} __aligned(16);
+
+struct tsi721_dma_sts {
+ __le64 desc_sts[8];
+} __aligned(64);
+
+struct tsi721_desc_sts_fifo {
+ union {
+ __le64 da64;
+ struct {
+ __le32 lo;
+ __le32 hi;
+ } da32;
+ } stat[8];
+} __aligned(64);
+
+/* Descriptor types for BDMA and Messaging blocks */
+enum dma_dtype {
+ DTYPE1 = 1, /* Data Transfer DMA Descriptor */
+ DTYPE2 = 2, /* Immediate Data Transfer DMA Descriptor */
+ DTYPE3 = 3, /* Block Pointer DMA Descriptor */
+ DTYPE4 = 4, /* Outbound Msg DMA Descriptor */
+ DTYPE5 = 5, /* OB Messaging Block Pointer Descriptor */
+ DTYPE6 = 6 /* Inbound Messaging Descriptor */
+};
+
+enum dma_rtype {
+ NREAD = 0,
+ LAST_NWRITE_R = 1,
+ ALL_NWRITE = 2,
+ ALL_NWRITE_R = 3,
+ MAINT_RD = 4,
+ MAINT_WR = 5
+};
+
+/*
+ * mport Driver Definitions
+ */
+#define TSI721_DMA_CHNUM TSI721_DMA_MAXCH
+
+#define TSI721_DMACH_MAINT 0 /* DMA channel for maint requests */
+#define TSI721_DMACH_MAINT_NBD 32 /* Number of BDs for maint requests */
+
+#define MSG_DMA_ENTRY_INX_TO_SIZE(x) ((0x10 << (x)) & 0xFFFF0)
+
+enum tsi721_smsg_int_flag {
+ SMSG_INT_NONE = 0x00000000,
+ SMSG_INT_ECC_COR_CH = 0x000000ff,
+ SMSG_INT_ECC_NCOR_CH = 0x0000ff00,
+ SMSG_INT_ECC_COR = 0x00020000,
+ SMSG_INT_ECC_NCOR = 0x00040000,
+ SMSG_INT_UNS_RSP = 0x00800000,
+ SMSG_INT_ALL = 0x0006ffff
+};
+
+/* Structures */
+
+struct tsi721_bdma_chan {
+ int bd_num; /* number of buffer descriptors */
+ void *bd_base; /* start of DMA descriptors */
+ dma_addr_t bd_phys;
+ void *sts_base; /* start of DMA BD status FIFO */
+ dma_addr_t sts_phys;
+ int sts_size;
+};
+
+struct tsi721_imsg_ring {
+ u32 size;
+ /* VA/PA of data buffers for incoming messages */
+ void *buf_base;
+ dma_addr_t buf_phys;
+ /* VA/PA of circular free buffer list */
+ void *imfq_base;
+ dma_addr_t imfq_phys;
+ /* VA/PA of Inbound message descriptors */
+ void *imd_base;
+ dma_addr_t imd_phys;
+ /* Inbound Queue buffer pointers */
+ void *imq_base[TSI721_IMSGD_RING_SIZE];
+
+ u32 rx_slot;
+ void *dev_id;
+ u32 fq_wrptr;
+ u32 desc_rdptr;
+ spinlock_t lock;
+};
+
+struct tsi721_omsg_ring {
+ u32 size;
+ /* VA/PA of OB Msg descriptors */
+ void *omd_base;
+ dma_addr_t omd_phys;
+ /* VA/PA of OB Msg data buffers */
+ void *omq_base[TSI721_OMSGD_RING_SIZE];
+ dma_addr_t omq_phys[TSI721_OMSGD_RING_SIZE];
+ /* VA/PA of OB Msg descriptor status FIFO */
+ void *sts_base;
+ dma_addr_t sts_phys;
+ u32 sts_size; /* # of allocated status entries */
+ u32 sts_rdptr;
+
+ u32 tx_slot;
+ void *dev_id;
+ u32 wr_count;
+ spinlock_t lock;
+};
+
+enum tsi721_flags {
+ TSI721_USING_MSI = (1 << 0),
+ TSI721_USING_MSIX = (1 << 1),
+ TSI721_IMSGID_SET = (1 << 2),
+};
+
+#ifdef CONFIG_PCI_MSI
+/*
+ * MSI-X Table Entries (0 ... 69)
+ */
+#define TSI721_MSIX_DMACH_DONE(x) (0 + (x))
+#define TSI721_MSIX_DMACH_INT(x) (8 + (x))
+#define TSI721_MSIX_BDMA_INT 16
+#define TSI721_MSIX_OMSG_DONE(x) (17 + (x))
+#define TSI721_MSIX_OMSG_INT(x) (25 + (x))
+#define TSI721_MSIX_IMSG_DQ_RCV(x) (33 + (x))
+#define TSI721_MSIX_IMSG_INT(x) (41 + (x))
+#define TSI721_MSIX_MSG_INT 49
+#define TSI721_MSIX_SR2PC_IDBQ_RCV(x) (50 + (x))
+#define TSI721_MSIX_SR2PC_CH_INT(x) (58 + (x))
+#define TSI721_MSIX_SR2PC_INT 66
+#define TSI721_MSIX_PC2SR_INT 67
+#define TSI721_MSIX_SRIO_MAC_INT 68
+#define TSI721_MSIX_I2C_INT 69
+
+/* MSI-X vector and init table entry indexes */
+enum tsi721_msix_vect {
+ TSI721_VECT_IDB,
+ TSI721_VECT_PWRX, /* PW_RX is part of SRIO MAC Interrupt reporting */
+ TSI721_VECT_OMB0_DONE,
+ TSI721_VECT_OMB1_DONE,
+ TSI721_VECT_OMB2_DONE,
+ TSI721_VECT_OMB3_DONE,
+ TSI721_VECT_OMB0_INT,
+ TSI721_VECT_OMB1_INT,
+ TSI721_VECT_OMB2_INT,
+ TSI721_VECT_OMB3_INT,
+ TSI721_VECT_IMB0_RCV,
+ TSI721_VECT_IMB1_RCV,
+ TSI721_VECT_IMB2_RCV,
+ TSI721_VECT_IMB3_RCV,
+ TSI721_VECT_IMB0_INT,
+ TSI721_VECT_IMB1_INT,
+ TSI721_VECT_IMB2_INT,
+ TSI721_VECT_IMB3_INT,
+ TSI721_VECT_MAX
+};
+
+#define IRQ_DEVICE_NAME_MAX 64
+
+struct msix_irq {
+ u16 vector;
+ char irq_name[IRQ_DEVICE_NAME_MAX];
+};
+#endif /* CONFIG_PCI_MSI */
+
+struct tsi721_device {
+ struct pci_dev *pdev;
+ struct rio_mport *mport;
+ u32 flags;
+ void __iomem *regs;
+#ifdef CONFIG_PCI_MSI
+ struct msix_irq msix[TSI721_VECT_MAX];
+#endif
+ /* Doorbells */
+ void __iomem *odb_base;
+ void *idb_base;
+ dma_addr_t idb_dma;
+ struct work_struct idb_work;
+ u32 db_discard_count;
+
+ /* Inbound Port-Write */
+ struct work_struct pw_work;
+ struct kfifo pw_fifo;
+ spinlock_t pw_fifo_lock;
+ u32 pw_discard_count;
+
+ /* BDMA Engine */
+ struct tsi721_bdma_chan bdma[TSI721_DMA_CHNUM];
+
+ /* Inbound Messaging */
+ int imsg_init[TSI721_IMSG_CHNUM];
+ struct tsi721_imsg_ring imsg_ring[TSI721_IMSG_CHNUM];
+
+ /* Outbound Messaging */
+ int omsg_init[TSI721_OMSG_CHNUM];
+ struct tsi721_omsg_ring omsg_ring[TSI721_OMSG_CHNUM];
+};
+
+#endif
diff --git a/drivers/rapidio/rio-access.c b/drivers/rapidio/rio-access.c
new file mode 100644
index 00000000..a3824bac
--- /dev/null
+++ b/drivers/rapidio/rio-access.c
@@ -0,0 +1,175 @@
+/*
+ * RapidIO configuration space access support
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/module.h>
+
+/*
+ * These interrupt-safe spinlocks protect all accesses to RIO
+ * configuration space and doorbell access.
+ */
+static DEFINE_SPINLOCK(rio_config_lock);
+static DEFINE_SPINLOCK(rio_doorbell_lock);
+
+/*
+ * Wrappers for all RIO configuration access functions. They just check
+ * alignment, do locking and call the low-level functions pointed to
+ * by rio_mport->ops.
+ */
+
+#define RIO_8_BAD 0
+#define RIO_16_BAD (offset & 1)
+#define RIO_32_BAD (offset & 3)
+
+/**
+ * RIO_LOP_READ - Generate rio_local_read_config_* functions
+ * @size: Size of configuration space read (8, 16, 32 bits)
+ * @type: C type of value argument
+ * @len: Length of configuration space read (1, 2, 4 bytes)
+ *
+ * Generates rio_local_read_config_* functions used to access
+ * configuration space registers on the local device.
+ */
+#define RIO_LOP_READ(size,type,len) \
+int __rio_local_read_config_##size \
+ (struct rio_mport *mport, u32 offset, type *value) \
+{ \
+ int res; \
+ unsigned long flags; \
+ u32 data = 0; \
+ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
+ spin_lock_irqsave(&rio_config_lock, flags); \
+ res = mport->ops->lcread(mport, mport->id, offset, len, &data); \
+ *value = (type)data; \
+ spin_unlock_irqrestore(&rio_config_lock, flags); \
+ return res; \
+}
+
+/**
+ * RIO_LOP_WRITE - Generate rio_local_write_config_* functions
+ * @size: Size of configuration space write (8, 16, 32 bits)
+ * @type: C type of value argument
+ * @len: Length of configuration space write (1, 2, 4 bytes)
+ *
+ * Generates rio_local_write_config_* functions used to access
+ * configuration space registers on the local device.
+ */
+#define RIO_LOP_WRITE(size,type,len) \
+int __rio_local_write_config_##size \
+ (struct rio_mport *mport, u32 offset, type value) \
+{ \
+ int res; \
+ unsigned long flags; \
+ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
+ spin_lock_irqsave(&rio_config_lock, flags); \
+ res = mport->ops->lcwrite(mport, mport->id, offset, len, value);\
+ spin_unlock_irqrestore(&rio_config_lock, flags); \
+ return res; \
+}
+
+RIO_LOP_READ(8, u8, 1)
+RIO_LOP_READ(16, u16, 2)
+RIO_LOP_READ(32, u32, 4)
+RIO_LOP_WRITE(8, u8, 1)
+RIO_LOP_WRITE(16, u16, 2)
+RIO_LOP_WRITE(32, u32, 4)
+
+EXPORT_SYMBOL_GPL(__rio_local_read_config_8);
+EXPORT_SYMBOL_GPL(__rio_local_read_config_16);
+EXPORT_SYMBOL_GPL(__rio_local_read_config_32);
+EXPORT_SYMBOL_GPL(__rio_local_write_config_8);
+EXPORT_SYMBOL_GPL(__rio_local_write_config_16);
+EXPORT_SYMBOL_GPL(__rio_local_write_config_32);
+
+/**
+ * RIO_OP_READ - Generate rio_mport_read_config_* functions
+ * @size: Size of configuration space read (8, 16, 32 bits)
+ * @type: C type of value argument
+ * @len: Length of configuration space read (1, 2, 4 bytes)
+ *
+ * Generates rio_mport_read_config_* functions used to access
+ * configuration space registers on the local device.
+ */
+#define RIO_OP_READ(size,type,len) \
+int rio_mport_read_config_##size \
+ (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type *value) \
+{ \
+ int res; \
+ unsigned long flags; \
+ u32 data = 0; \
+ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
+ spin_lock_irqsave(&rio_config_lock, flags); \
+ res = mport->ops->cread(mport, mport->id, destid, hopcount, offset, len, &data); \
+ *value = (type)data; \
+ spin_unlock_irqrestore(&rio_config_lock, flags); \
+ return res; \
+}
+
+/**
+ * RIO_OP_WRITE - Generate rio_mport_write_config_* functions
+ * @size: Size of configuration space write (8, 16, 32 bits)
+ * @type: C type of value argument
+ * @len: Length of configuration space write (1, 2, 4 bytes)
+ *
+ * Generates rio_mport_write_config_* functions used to access
+ * configuration space registers on the local device.
+ */
+#define RIO_OP_WRITE(size,type,len) \
+int rio_mport_write_config_##size \
+ (struct rio_mport *mport, u16 destid, u8 hopcount, u32 offset, type value) \
+{ \
+ int res; \
+ unsigned long flags; \
+ if (RIO_##size##_BAD) return RIO_BAD_SIZE; \
+ spin_lock_irqsave(&rio_config_lock, flags); \
+ res = mport->ops->cwrite(mport, mport->id, destid, hopcount, offset, len, value); \
+ spin_unlock_irqrestore(&rio_config_lock, flags); \
+ return res; \
+}
+
+RIO_OP_READ(8, u8, 1)
+RIO_OP_READ(16, u16, 2)
+RIO_OP_READ(32, u32, 4)
+RIO_OP_WRITE(8, u8, 1)
+RIO_OP_WRITE(16, u16, 2)
+RIO_OP_WRITE(32, u32, 4)
+
+EXPORT_SYMBOL_GPL(rio_mport_read_config_8);
+EXPORT_SYMBOL_GPL(rio_mport_read_config_16);
+EXPORT_SYMBOL_GPL(rio_mport_read_config_32);
+EXPORT_SYMBOL_GPL(rio_mport_write_config_8);
+EXPORT_SYMBOL_GPL(rio_mport_write_config_16);
+EXPORT_SYMBOL_GPL(rio_mport_write_config_32);
+
+/**
+ * rio_mport_send_doorbell - Send a doorbell message
+ *
+ * @mport: RIO master port
+ * @destid: RIO device destination ID
+ * @data: Doorbell message data
+ *
+ * Send a doorbell message to a RIO device. The doorbell message
+ * has a 16-bit info field provided by the data argument.
+ */
+int rio_mport_send_doorbell(struct rio_mport *mport, u16 destid, u16 data)
+{
+ int res;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rio_doorbell_lock, flags);
+ res = mport->ops->dsend(mport, mport->id, destid, data);
+ spin_unlock_irqrestore(&rio_doorbell_lock, flags);
+
+ return res;
+}
+
+EXPORT_SYMBOL_GPL(rio_mport_send_doorbell);
diff --git a/drivers/rapidio/rio-driver.c b/drivers/rapidio/rio-driver.c
new file mode 100644
index 00000000..0f4a53bd
--- /dev/null
+++ b/drivers/rapidio/rio-driver.c
@@ -0,0 +1,226 @@
+/*
+ * RapidIO driver support
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/rio.h>
+#include <linux/rio_ids.h>
+
+#include "rio.h"
+
+/**
+ * rio_match_device - Tell if a RIO device has a matching RIO device id structure
+ * @id: the RIO device id structure to match against
+ * @rdev: the RIO device structure to match against
+ *
+ * Used from driver probe and bus matching to check whether a RIO device
+ * matches a device id structure provided by a RIO driver. Returns the
+ * matching &struct rio_device_id or %NULL if there is no match.
+ */
+static const struct rio_device_id *rio_match_device(const struct rio_device_id
+ *id,
+ const struct rio_dev *rdev)
+{
+ while (id->vid || id->asm_vid) {
+ if (((id->vid == RIO_ANY_ID) || (id->vid == rdev->vid)) &&
+ ((id->did == RIO_ANY_ID) || (id->did == rdev->did)) &&
+ ((id->asm_vid == RIO_ANY_ID)
+ || (id->asm_vid == rdev->asm_vid))
+ && ((id->asm_did == RIO_ANY_ID)
+ || (id->asm_did == rdev->asm_did)))
+ return id;
+ id++;
+ }
+ return NULL;
+}
+
+/**
+ * rio_dev_get - Increments the reference count of the RIO device structure
+ *
+ * @rdev: RIO device being referenced
+ *
+ * Each live reference to a device should be refcounted.
+ *
+ * Drivers for RIO devices should normally record such references in
+ * their probe() methods, when they bind to a device, and release
+ * them by calling rio_dev_put(), in their disconnect() methods.
+ */
+struct rio_dev *rio_dev_get(struct rio_dev *rdev)
+{
+ if (rdev)
+ get_device(&rdev->dev);
+
+ return rdev;
+}
+
+/**
+ * rio_dev_put - Release a use of the RIO device structure
+ *
+ * @rdev: RIO device being disconnected
+ *
+ * Must be called when a user of a device is finished with it.
+ * When the last user of the device calls this function, the
+ * memory of the device is freed.
+ */
+void rio_dev_put(struct rio_dev *rdev)
+{
+ if (rdev)
+ put_device(&rdev->dev);
+}
+
+/**
+ * rio_device_probe - Tell if a RIO device structure has a matching RIO device id structure
+ * @dev: the RIO device structure to match against
+ *
+ * return 0 and set rio_dev->driver when drv claims rio_dev, else error
+ */
+static int rio_device_probe(struct device *dev)
+{
+ struct rio_driver *rdrv = to_rio_driver(dev->driver);
+ struct rio_dev *rdev = to_rio_dev(dev);
+ int error = -ENODEV;
+ const struct rio_device_id *id;
+
+ if (!rdev->driver && rdrv->probe) {
+ if (!rdrv->id_table)
+ return error;
+ id = rio_match_device(rdrv->id_table, rdev);
+ rio_dev_get(rdev);
+ if (id)
+ error = rdrv->probe(rdev, id);
+ if (error >= 0) {
+ rdev->driver = rdrv;
+ error = 0;
+ } else
+ rio_dev_put(rdev);
+ }
+ return error;
+}
+
+/**
+ * rio_device_remove - Remove a RIO device from the system
+ *
+ * @dev: the RIO device structure to match against
+ *
+ * Remove a RIO device from the system. If it has an associated
+ * driver, then run the driver remove() method. Then update
+ * the reference count.
+ */
+static int rio_device_remove(struct device *dev)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ struct rio_driver *rdrv = rdev->driver;
+
+ if (rdrv) {
+ if (rdrv->remove)
+ rdrv->remove(rdev);
+ rdev->driver = NULL;
+ }
+
+ rio_dev_put(rdev);
+
+ return 0;
+}
+
+/**
+ * rio_register_driver - register a new RIO driver
+ * @rdrv: the RIO driver structure to register
+ *
+ * Adds a &struct rio_driver to the list of registered drivers.
+ * Returns a negative value on error, otherwise 0. If no error
+ * occurred, the driver remains registered even if no device
+ * was claimed during registration.
+ */
+int rio_register_driver(struct rio_driver *rdrv)
+{
+ /* initialize common driver fields */
+ rdrv->driver.name = rdrv->name;
+ rdrv->driver.bus = &rio_bus_type;
+
+ /* register with core */
+ return driver_register(&rdrv->driver);
+}
+
+/**
+ * rio_unregister_driver - unregister a RIO driver
+ * @rdrv: the RIO driver structure to unregister
+ *
+ * Deletes the &struct rio_driver from the list of registered RIO
+ * drivers, gives it a chance to clean up by calling its remove()
+ * function for each device it was responsible for, and marks those
+ * devices as driverless.
+ */
+void rio_unregister_driver(struct rio_driver *rdrv)
+{
+ driver_unregister(&rdrv->driver);
+}
+
+/**
+ * rio_match_bus - Tell if a RIO device structure has a matching RIO driver device id structure
+ * @dev: the standard device structure to match against
+ * @drv: the standard driver structure containing the ids to match against
+ *
+ * Used by a driver to check whether a RIO device present in the
+ * system is in its list of supported devices. Returns 1 if
+ * there is a matching &struct rio_device_id or 0 if there is
+ * no match.
+ */
+static int rio_match_bus(struct device *dev, struct device_driver *drv)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ struct rio_driver *rdrv = to_rio_driver(drv);
+ const struct rio_device_id *id = rdrv->id_table;
+ const struct rio_device_id *found_id;
+
+ if (!id)
+ goto out;
+
+ found_id = rio_match_device(id, rdev);
+
+ if (found_id)
+ return 1;
+
+ out:return 0;
+}
+
+struct device rio_bus = {
+ .init_name = "rapidio",
+};
+
+struct bus_type rio_bus_type = {
+ .name = "rapidio",
+ .match = rio_match_bus,
+ .dev_attrs = rio_dev_attrs,
+ .probe = rio_device_probe,
+ .remove = rio_device_remove,
+};
+
+/**
+ * rio_bus_init - Register the RapidIO bus with the device model
+ *
+ * Registers the RIO bus device and RIO bus type with the Linux
+ * device model.
+ */
+static int __init rio_bus_init(void)
+{
+ if (device_register(&rio_bus) < 0)
+ printk("RIO: failed to register RIO bus device\n");
+ return bus_register(&rio_bus_type);
+}
+
+postcore_initcall(rio_bus_init);
+
+EXPORT_SYMBOL_GPL(rio_register_driver);
+EXPORT_SYMBOL_GPL(rio_unregister_driver);
+EXPORT_SYMBOL_GPL(rio_bus_type);
+EXPORT_SYMBOL_GPL(rio_dev_get);
+EXPORT_SYMBOL_GPL(rio_dev_put);
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
new file mode 100644
index 00000000..2bebd791
--- /dev/null
+++ b/drivers/rapidio/rio-scan.c
@@ -0,0 +1,1314 @@
+/*
+ * RapidIO enumeration and discovery support
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * Copyright 2009 Integrated Device Technology, Inc.
+ * Alex Bounine <alexandre.bounine@idt.com>
+ * - Added Port-Write/Error Management initialization and handling
+ *
+ * Copyright 2009 Sysgo AG
+ * Thomas Moll <thomas.moll@sysgo.com>
+ * - Added Input- Output- enable functionality, to allow full communication
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/rio_regs.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+#include <linux/slab.h>
+
+#include "rio.h"
+
+LIST_HEAD(rio_devices);
+static LIST_HEAD(rio_switches);
+
+static void rio_enum_timeout(unsigned long);
+
+static void rio_init_em(struct rio_dev *rdev);
+
+DEFINE_SPINLOCK(rio_global_list_lock);
+
+static int next_destid = 0;
+static int next_net = 0;
+static int next_comptag = 1;
+
+static struct timer_list rio_enum_timer =
+TIMER_INITIALIZER(rio_enum_timeout, 0, 0);
+
+static int rio_mport_phys_table[] = {
+ RIO_EFB_PAR_EP_ID,
+ RIO_EFB_PAR_EP_REC_ID,
+ RIO_EFB_SER_EP_ID,
+ RIO_EFB_SER_EP_REC_ID,
+ -1,
+};
+
+/**
+ * rio_get_device_id - Get the base/extended device id for a device
+ * @port: RIO master port
+ * @destid: Destination ID of device
+ * @hopcount: Hopcount to device
+ *
+ * Reads the base/extended device id from a device. Returns the
+ * 8/16-bit device ID.
+ */
+static u16 rio_get_device_id(struct rio_mport *port, u16 destid, u8 hopcount)
+{
+ u32 result;
+
+ rio_mport_read_config_32(port, destid, hopcount, RIO_DID_CSR, &result);
+
+ return RIO_GET_DID(port->sys_size, result);
+}
+
+/**
+ * rio_set_device_id - Set the base/extended device id for a device
+ * @port: RIO master port
+ * @destid: Destination ID of device
+ * @hopcount: Hopcount to device
+ * @did: Device ID value to be written
+ *
+ * Writes the base/extended device id from a device.
+ */
+static void rio_set_device_id(struct rio_mport *port, u16 destid, u8 hopcount, u16 did)
+{
+ rio_mport_write_config_32(port, destid, hopcount, RIO_DID_CSR,
+ RIO_SET_DID(port->sys_size, did));
+}
+
+/**
+ * rio_local_set_device_id - Set the base/extended device id for a port
+ * @port: RIO master port
+ * @did: Device ID value to be written
+ *
+ * Writes the base/extended device id from a device.
+ */
+static void rio_local_set_device_id(struct rio_mport *port, u16 did)
+{
+ rio_local_write_config_32(port, RIO_DID_CSR, RIO_SET_DID(port->sys_size,
+ did));
+}
+
+/**
+ * rio_clear_locks- Release all host locks and signal enumeration complete
+ * @port: Master port to issue transaction
+ *
+ * Marks the component tag CSR on each device with the enumeration
+ * complete flag. When complete, it then release the host locks on
+ * each device. Returns 0 on success or %-EINVAL on failure.
+ */
+static int rio_clear_locks(struct rio_mport *port)
+{
+ struct rio_dev *rdev;
+ u32 result;
+ int ret = 0;
+
+ /* Release host device id locks */
+ rio_local_write_config_32(port, RIO_HOST_DID_LOCK_CSR,
+ port->host_deviceid);
+ rio_local_read_config_32(port, RIO_HOST_DID_LOCK_CSR, &result);
+ if ((result & 0xffff) != 0xffff) {
+ printk(KERN_INFO
+ "RIO: badness when releasing host lock on master port, result %8.8x\n",
+ result);
+ ret = -EINVAL;
+ }
+ list_for_each_entry(rdev, &rio_devices, global_list) {
+ rio_write_config_32(rdev, RIO_HOST_DID_LOCK_CSR,
+ port->host_deviceid);
+ rio_read_config_32(rdev, RIO_HOST_DID_LOCK_CSR, &result);
+ if ((result & 0xffff) != 0xffff) {
+ printk(KERN_INFO
+ "RIO: badness when releasing host lock on vid %4.4x did %4.4x\n",
+ rdev->vid, rdev->did);
+ ret = -EINVAL;
+ }
+
+ /* Mark device as discovered and enable master */
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_GEN_CTL_CSR,
+ &result);
+ result |= RIO_PORT_GEN_DISCOVERED | RIO_PORT_GEN_MASTER;
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_GEN_CTL_CSR,
+ result);
+ }
+
+ return ret;
+}
+
+/**
+ * rio_enum_host- Set host lock and initialize host destination ID
+ * @port: Master port to issue transaction
+ *
+ * Sets the local host master port lock and destination ID register
+ * with the host device ID value. The host device ID value is provided
+ * by the platform. Returns %0 on success or %-1 on failure.
+ */
+static int rio_enum_host(struct rio_mport *port)
+{
+ u32 result;
+
+ /* Set master port host device id lock */
+ rio_local_write_config_32(port, RIO_HOST_DID_LOCK_CSR,
+ port->host_deviceid);
+
+ rio_local_read_config_32(port, RIO_HOST_DID_LOCK_CSR, &result);
+ if ((result & 0xffff) != port->host_deviceid)
+ return -1;
+
+ /* Set master port destid and init destid ctr */
+ rio_local_set_device_id(port, port->host_deviceid);
+
+ if (next_destid == port->host_deviceid)
+ next_destid++;
+
+ return 0;
+}
+
+/**
+ * rio_device_has_destid- Test if a device contains a destination ID register
+ * @port: Master port to issue transaction
+ * @src_ops: RIO device source operations
+ * @dst_ops: RIO device destination operations
+ *
+ * Checks the provided @src_ops and @dst_ops for the necessary transaction
+ * capabilities that indicate whether or not a device will implement a
+ * destination ID register. Returns 1 if true or 0 if false.
+ */
+static int rio_device_has_destid(struct rio_mport *port, int src_ops,
+ int dst_ops)
+{
+ u32 mask = RIO_OPS_READ | RIO_OPS_WRITE | RIO_OPS_ATOMIC_TST_SWP | RIO_OPS_ATOMIC_INC | RIO_OPS_ATOMIC_DEC | RIO_OPS_ATOMIC_SET | RIO_OPS_ATOMIC_CLR;
+
+ return !!((src_ops | dst_ops) & mask);
+}
+
+/**
+ * rio_release_dev- Frees a RIO device struct
+ * @dev: LDM device associated with a RIO device struct
+ *
+ * Gets the RIO device struct associated a RIO device struct.
+ * The RIO device struct is freed.
+ */
+static void rio_release_dev(struct device *dev)
+{
+ struct rio_dev *rdev;
+
+ rdev = to_rio_dev(dev);
+ kfree(rdev);
+}
+
+/**
+ * rio_is_switch- Tests if a RIO device has switch capabilities
+ * @rdev: RIO device
+ *
+ * Gets the RIO device Processing Element Features register
+ * contents and tests for switch capabilities. Returns 1 if
+ * the device is a switch or 0 if it is not a switch.
+ * The RIO device struct is freed.
+ */
+static int rio_is_switch(struct rio_dev *rdev)
+{
+ if (rdev->pef & RIO_PEF_SWITCH)
+ return 1;
+ return 0;
+}
+
+/**
+ * rio_switch_init - Sets switch operations for a particular vendor switch
+ * @rdev: RIO device
+ * @do_enum: Enumeration/Discovery mode flag
+ *
+ * Searches the RIO switch ops table for known switch types. If the vid
+ * and did match a switch table entry, then call switch initialization
+ * routine to setup switch-specific routines.
+ */
+static void rio_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ struct rio_switch_ops *cur = __start_rio_switch_ops;
+ struct rio_switch_ops *end = __end_rio_switch_ops;
+
+ while (cur < end) {
+ if ((cur->vid == rdev->vid) && (cur->did == rdev->did)) {
+ pr_debug("RIO: calling init routine for %s\n",
+ rio_name(rdev));
+ cur->init_hook(rdev, do_enum);
+ break;
+ }
+ cur++;
+ }
+
+ if ((cur >= end) && (rdev->pef & RIO_PEF_STD_RT)) {
+ pr_debug("RIO: adding STD routing ops for %s\n",
+ rio_name(rdev));
+ rdev->rswitch->add_entry = rio_std_route_add_entry;
+ rdev->rswitch->get_entry = rio_std_route_get_entry;
+ rdev->rswitch->clr_table = rio_std_route_clr_table;
+ }
+
+ if (!rdev->rswitch->add_entry || !rdev->rswitch->get_entry)
+ printk(KERN_ERR "RIO: missing routing ops for %s\n",
+ rio_name(rdev));
+}
+
+/**
+ * rio_add_device- Adds a RIO device to the device model
+ * @rdev: RIO device
+ *
+ * Adds the RIO device to the global device list and adds the RIO
+ * device to the RIO device list. Creates the generic sysfs nodes
+ * for an RIO device.
+ */
+static int __devinit rio_add_device(struct rio_dev *rdev)
+{
+ int err;
+
+ err = device_add(&rdev->dev);
+ if (err)
+ return err;
+
+ spin_lock(&rio_global_list_lock);
+ list_add_tail(&rdev->global_list, &rio_devices);
+ spin_unlock(&rio_global_list_lock);
+
+ rio_create_sysfs_dev_files(rdev);
+
+ return 0;
+}
+
+/**
+ * rio_enable_rx_tx_port - enable input receiver and output transmitter of
+ * given port
+ * @port: Master port associated with the RIO network
+ * @local: local=1 select local port otherwise a far device is reached
+ * @destid: Destination ID of the device to check host bit
+ * @hopcount: Number of hops to reach the target
+ * @port_num: Port (-number on switch) to enable on a far end device
+ *
+ * Returns 0 or 1 from on General Control Command and Status Register
+ * (EXT_PTR+0x3C)
+ */
+inline int rio_enable_rx_tx_port(struct rio_mport *port,
+ int local, u16 destid,
+ u8 hopcount, u8 port_num) {
+#ifdef CONFIG_RAPIDIO_ENABLE_RX_TX_PORTS
+ u32 regval;
+ u32 ext_ftr_ptr;
+
+ /*
+ * enable rx input tx output port
+ */
+ pr_debug("rio_enable_rx_tx_port(local = %d, destid = %d, hopcount = "
+ "%d, port_num = %d)\n", local, destid, hopcount, port_num);
+
+ ext_ftr_ptr = rio_mport_get_physefb(port, local, destid, hopcount);
+
+ if (local) {
+ rio_local_read_config_32(port, ext_ftr_ptr +
+ RIO_PORT_N_CTL_CSR(0),
+ &regval);
+ } else {
+ if (rio_mport_read_config_32(port, destid, hopcount,
+ ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), &regval) < 0)
+ return -EIO;
+ }
+
+ if (regval & RIO_PORT_N_CTL_P_TYP_SER) {
+ /* serial */
+ regval = regval | RIO_PORT_N_CTL_EN_RX_SER
+ | RIO_PORT_N_CTL_EN_TX_SER;
+ } else {
+ /* parallel */
+ regval = regval | RIO_PORT_N_CTL_EN_RX_PAR
+ | RIO_PORT_N_CTL_EN_TX_PAR;
+ }
+
+ if (local) {
+ rio_local_write_config_32(port, ext_ftr_ptr +
+ RIO_PORT_N_CTL_CSR(0), regval);
+ } else {
+ if (rio_mport_write_config_32(port, destid, hopcount,
+ ext_ftr_ptr + RIO_PORT_N_CTL_CSR(port_num), regval) < 0)
+ return -EIO;
+ }
+#endif
+ return 0;
+}
+
+/**
+ * rio_setup_device- Allocates and sets up a RIO device
+ * @net: RIO network
+ * @port: Master port to send transactions
+ * @destid: Current destination ID
+ * @hopcount: Current hopcount
+ * @do_enum: Enumeration/Discovery mode flag
+ *
+ * Allocates a RIO device and configures fields based on configuration
+ * space contents. If device has a destination ID register, a destination
+ * ID is either assigned in enumeration mode or read from configuration
+ * space in discovery mode. If the device has switch capabilities, then
+ * a switch is allocated and configured appropriately. Returns a pointer
+ * to a RIO device on success or NULL on failure.
+ *
+ */
+static struct rio_dev __devinit *rio_setup_device(struct rio_net *net,
+ struct rio_mport *port, u16 destid,
+ u8 hopcount, int do_enum)
+{
+ int ret = 0;
+ struct rio_dev *rdev;
+ struct rio_switch *rswitch = NULL;
+ int result, rdid;
+ size_t size;
+ u32 swpinfo = 0;
+
+ size = sizeof(struct rio_dev);
+ if (rio_mport_read_config_32(port, destid, hopcount,
+ RIO_PEF_CAR, &result))
+ return NULL;
+
+ if (result & (RIO_PEF_SWITCH | RIO_PEF_MULTIPORT)) {
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_SWP_INFO_CAR, &swpinfo);
+ if (result & RIO_PEF_SWITCH) {
+ size += (RIO_GET_TOTAL_PORTS(swpinfo) *
+ sizeof(rswitch->nextdev[0])) + sizeof(*rswitch);
+ }
+ }
+
+ rdev = kzalloc(size, GFP_KERNEL);
+ if (!rdev)
+ return NULL;
+
+ rdev->net = net;
+ rdev->pef = result;
+ rdev->swpinfo = swpinfo;
+ rio_mport_read_config_32(port, destid, hopcount, RIO_DEV_ID_CAR,
+ &result);
+ rdev->did = result >> 16;
+ rdev->vid = result & 0xffff;
+ rio_mport_read_config_32(port, destid, hopcount, RIO_DEV_INFO_CAR,
+ &rdev->device_rev);
+ rio_mport_read_config_32(port, destid, hopcount, RIO_ASM_ID_CAR,
+ &result);
+ rdev->asm_did = result >> 16;
+ rdev->asm_vid = result & 0xffff;
+ rio_mport_read_config_32(port, destid, hopcount, RIO_ASM_INFO_CAR,
+ &result);
+ rdev->asm_rev = result >> 16;
+ if (rdev->pef & RIO_PEF_EXT_FEATURES) {
+ rdev->efptr = result & 0xffff;
+ rdev->phys_efptr = rio_mport_get_physefb(port, 0, destid,
+ hopcount);
+
+ rdev->em_efptr = rio_mport_get_feature(port, 0, destid,
+ hopcount, RIO_EFB_ERR_MGMNT);
+ }
+
+ rio_mport_read_config_32(port, destid, hopcount, RIO_SRC_OPS_CAR,
+ &rdev->src_ops);
+ rio_mport_read_config_32(port, destid, hopcount, RIO_DST_OPS_CAR,
+ &rdev->dst_ops);
+
+ if (do_enum) {
+ /* Assign component tag to device */
+ if (next_comptag >= 0x10000) {
+ pr_err("RIO: Component Tag Counter Overflow\n");
+ goto cleanup;
+ }
+ rio_mport_write_config_32(port, destid, hopcount,
+ RIO_COMPONENT_TAG_CSR, next_comptag);
+ rdev->comp_tag = next_comptag++;
+ } else {
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_COMPONENT_TAG_CSR,
+ &rdev->comp_tag);
+ }
+
+ if (rio_device_has_destid(port, rdev->src_ops, rdev->dst_ops)) {
+ if (do_enum) {
+ rio_set_device_id(port, destid, hopcount, next_destid);
+ rdev->destid = next_destid++;
+ if (next_destid == port->host_deviceid)
+ next_destid++;
+ } else
+ rdev->destid = rio_get_device_id(port, destid, hopcount);
+
+ rdev->hopcount = 0xff;
+ } else {
+ /* Switch device has an associated destID which
+ * will be adjusted later
+ */
+ rdev->destid = destid;
+ rdev->hopcount = hopcount;
+ }
+
+ /* If a PE has both switch and other functions, show it as a switch */
+ if (rio_is_switch(rdev)) {
+ rswitch = rdev->rswitch;
+ rswitch->switchid = rdev->comp_tag & RIO_CTAG_UDEVID;
+ rswitch->port_ok = 0;
+ rswitch->route_table = kzalloc(sizeof(u8)*
+ RIO_MAX_ROUTE_ENTRIES(port->sys_size),
+ GFP_KERNEL);
+ if (!rswitch->route_table)
+ goto cleanup;
+ /* Initialize switch route table */
+ for (rdid = 0; rdid < RIO_MAX_ROUTE_ENTRIES(port->sys_size);
+ rdid++)
+ rswitch->route_table[rdid] = RIO_INVALID_ROUTE;
+ dev_set_name(&rdev->dev, "%02x:s:%04x", rdev->net->id,
+ rswitch->switchid);
+ rio_switch_init(rdev, do_enum);
+
+ if (do_enum && rswitch->clr_table)
+ rswitch->clr_table(port, destid, hopcount,
+ RIO_GLOBAL_TABLE);
+
+ list_add_tail(&rswitch->node, &rio_switches);
+
+ } else {
+ if (do_enum)
+ /*Enable Input Output Port (transmitter reviever)*/
+ rio_enable_rx_tx_port(port, 0, destid, hopcount, 0);
+
+ dev_set_name(&rdev->dev, "%02x:e:%04x", rdev->net->id,
+ rdev->destid);
+ }
+
+ rdev->dev.bus = &rio_bus_type;
+ rdev->dev.parent = &rio_bus;
+
+ device_initialize(&rdev->dev);
+ rdev->dev.release = rio_release_dev;
+ rio_dev_get(rdev);
+
+ rdev->dma_mask = DMA_BIT_MASK(32);
+ rdev->dev.dma_mask = &rdev->dma_mask;
+ rdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
+ if (rdev->dst_ops & RIO_DST_OPS_DOORBELL)
+ rio_init_dbell_res(&rdev->riores[RIO_DOORBELL_RESOURCE],
+ 0, 0xffff);
+
+ ret = rio_add_device(rdev);
+ if (ret)
+ goto cleanup;
+
+ return rdev;
+
+cleanup:
+ if (rswitch)
+ kfree(rswitch->route_table);
+
+ kfree(rdev);
+ return NULL;
+}
+
+/**
+ * rio_sport_is_active- Tests if a switch port has an active connection.
+ * @port: Master port to send transaction
+ * @destid: Associated destination ID for switch
+ * @hopcount: Hopcount to reach switch
+ * @sport: Switch port number
+ *
+ * Reads the port error status CSR for a particular switch port to
+ * determine if the port has an active link. Returns
+ * %RIO_PORT_N_ERR_STS_PORT_OK if the port is active or %0 if it is
+ * inactive.
+ */
+static int
+rio_sport_is_active(struct rio_mport *port, u16 destid, u8 hopcount, int sport)
+{
+ u32 result = 0;
+ u32 ext_ftr_ptr;
+
+ ext_ftr_ptr = rio_mport_get_efb(port, 0, destid, hopcount, 0);
+
+ while (ext_ftr_ptr) {
+ rio_mport_read_config_32(port, destid, hopcount,
+ ext_ftr_ptr, &result);
+ result = RIO_GET_BLOCK_ID(result);
+ if ((result == RIO_EFB_SER_EP_FREE_ID) ||
+ (result == RIO_EFB_SER_EP_FREE_ID_V13P) ||
+ (result == RIO_EFB_SER_EP_FREC_ID))
+ break;
+
+ ext_ftr_ptr = rio_mport_get_efb(port, 0, destid, hopcount,
+ ext_ftr_ptr);
+ }
+
+ if (ext_ftr_ptr)
+ rio_mport_read_config_32(port, destid, hopcount,
+ ext_ftr_ptr +
+ RIO_PORT_N_ERR_STS_CSR(sport),
+ &result);
+
+ return result & RIO_PORT_N_ERR_STS_PORT_OK;
+}
+
+/**
+ * rio_lock_device - Acquires host device lock for specified device
+ * @port: Master port to send transaction
+ * @destid: Destination ID for device/switch
+ * @hopcount: Hopcount to reach switch
+ * @wait_ms: Max wait time in msec (0 = no timeout)
+ *
+ * Attepts to acquire host device lock for specified device
+ * Returns 0 if device lock acquired or EINVAL if timeout expires.
+ */
+static int
+rio_lock_device(struct rio_mport *port, u16 destid, u8 hopcount, int wait_ms)
+{
+ u32 result;
+ int tcnt = 0;
+
+ /* Attempt to acquire device lock */
+ rio_mport_write_config_32(port, destid, hopcount,
+ RIO_HOST_DID_LOCK_CSR, port->host_deviceid);
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_HOST_DID_LOCK_CSR, &result);
+
+ while (result != port->host_deviceid) {
+ if (wait_ms != 0 && tcnt == wait_ms) {
+ pr_debug("RIO: timeout when locking device %x:%x\n",
+ destid, hopcount);
+ return -EINVAL;
+ }
+
+ /* Delay a bit */
+ mdelay(1);
+ tcnt++;
+ /* Try to acquire device lock again */
+ rio_mport_write_config_32(port, destid,
+ hopcount,
+ RIO_HOST_DID_LOCK_CSR,
+ port->host_deviceid);
+ rio_mport_read_config_32(port, destid,
+ hopcount,
+ RIO_HOST_DID_LOCK_CSR, &result);
+ }
+
+ return 0;
+}
+
+/**
+ * rio_unlock_device - Releases host device lock for specified device
+ * @port: Master port to send transaction
+ * @destid: Destination ID for device/switch
+ * @hopcount: Hopcount to reach switch
+ *
+ * Returns 0 if device lock released or EINVAL if fails.
+ */
+static int
+rio_unlock_device(struct rio_mport *port, u16 destid, u8 hopcount)
+{
+ u32 result;
+
+ /* Release device lock */
+ rio_mport_write_config_32(port, destid,
+ hopcount,
+ RIO_HOST_DID_LOCK_CSR,
+ port->host_deviceid);
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_HOST_DID_LOCK_CSR, &result);
+ if ((result & 0xffff) != 0xffff) {
+ pr_debug("RIO: badness when releasing device lock %x:%x\n",
+ destid, hopcount);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * rio_route_add_entry- Add a route entry to a switch routing table
+ * @rdev: RIO device
+ * @table: Routing table ID
+ * @route_destid: Destination ID to be routed
+ * @route_port: Port number to be routed
+ * @lock: lock switch device flag
+ *
+ * Calls the switch specific add_entry() method to add a route entry
+ * on a switch. The route table can be specified using the @table
+ * argument if a switch has per port routing tables or the normal
+ * use is to specific all tables (or the global table) by passing
+ * %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL
+ * on failure.
+ */
+static int
+rio_route_add_entry(struct rio_dev *rdev,
+ u16 table, u16 route_destid, u8 route_port, int lock)
+{
+ int rc;
+
+ if (lock) {
+ rc = rio_lock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount, 1000);
+ if (rc)
+ return rc;
+ }
+
+ rc = rdev->rswitch->add_entry(rdev->net->hport, rdev->destid,
+ rdev->hopcount, table,
+ route_destid, route_port);
+ if (lock)
+ rio_unlock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount);
+
+ return rc;
+}
+
+/**
+ * rio_route_get_entry- Read a route entry in a switch routing table
+ * @rdev: RIO device
+ * @table: Routing table ID
+ * @route_destid: Destination ID to be routed
+ * @route_port: Pointer to read port number into
+ * @lock: lock switch device flag
+ *
+ * Calls the switch specific get_entry() method to read a route entry
+ * in a switch. The route table can be specified using the @table
+ * argument if a switch has per port routing tables or the normal
+ * use is to specific all tables (or the global table) by passing
+ * %RIO_GLOBAL_TABLE in @table. Returns %0 on success or %-EINVAL
+ * on failure.
+ */
+static int
+rio_route_get_entry(struct rio_dev *rdev, u16 table,
+ u16 route_destid, u8 *route_port, int lock)
+{
+ int rc;
+
+ if (lock) {
+ rc = rio_lock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount, 1000);
+ if (rc)
+ return rc;
+ }
+
+ rc = rdev->rswitch->get_entry(rdev->net->hport, rdev->destid,
+ rdev->hopcount, table,
+ route_destid, route_port);
+ if (lock)
+ rio_unlock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount);
+
+ return rc;
+}
+
+/**
+ * rio_get_host_deviceid_lock- Reads the Host Device ID Lock CSR on a device
+ * @port: Master port to send transaction
+ * @hopcount: Number of hops to the device
+ *
+ * Used during enumeration to read the Host Device ID Lock CSR on a
+ * RIO device. Returns the value of the lock register.
+ */
+static u16 rio_get_host_deviceid_lock(struct rio_mport *port, u8 hopcount)
+{
+ u32 result;
+
+ rio_mport_read_config_32(port, RIO_ANY_DESTID(port->sys_size), hopcount,
+ RIO_HOST_DID_LOCK_CSR, &result);
+
+ return (u16) (result & 0xffff);
+}
+
+/**
+ * rio_enum_peer- Recursively enumerate a RIO network through a master port
+ * @net: RIO network being enumerated
+ * @port: Master port to send transactions
+ * @hopcount: Number of hops into the network
+ * @prev: Previous RIO device connected to the enumerated one
+ * @prev_port: Port on previous RIO device
+ *
+ * Recursively enumerates a RIO network. Transactions are sent via the
+ * master port passed in @port.
+ */
+static int __devinit rio_enum_peer(struct rio_net *net, struct rio_mport *port,
+ u8 hopcount, struct rio_dev *prev, int prev_port)
+{
+ int port_num;
+ int cur_destid;
+ int sw_destid;
+ int sw_inport;
+ struct rio_dev *rdev;
+ u16 destid;
+ u32 regval;
+ int tmp;
+
+ if (rio_mport_chk_dev_access(port,
+ RIO_ANY_DESTID(port->sys_size), hopcount)) {
+ pr_debug("RIO: device access check failed\n");
+ return -1;
+ }
+
+ if (rio_get_host_deviceid_lock(port, hopcount) == port->host_deviceid) {
+ pr_debug("RIO: PE already discovered by this host\n");
+ /*
+ * Already discovered by this host. Add it as another
+ * link to the existing device.
+ */
+ rio_mport_read_config_32(port, RIO_ANY_DESTID(port->sys_size),
+ hopcount, RIO_COMPONENT_TAG_CSR, &regval);
+
+ if (regval) {
+ rdev = rio_get_comptag((regval & 0xffff), NULL);
+
+ if (rdev && prev && rio_is_switch(prev)) {
+ pr_debug("RIO: redundant path to %s\n",
+ rio_name(rdev));
+ prev->rswitch->nextdev[prev_port] = rdev;
+ }
+ }
+
+ return 0;
+ }
+
+ /* Attempt to acquire device lock */
+ rio_mport_write_config_32(port, RIO_ANY_DESTID(port->sys_size),
+ hopcount,
+ RIO_HOST_DID_LOCK_CSR, port->host_deviceid);
+ while ((tmp = rio_get_host_deviceid_lock(port, hopcount))
+ < port->host_deviceid) {
+ /* Delay a bit */
+ mdelay(1);
+ /* Attempt to acquire device lock again */
+ rio_mport_write_config_32(port, RIO_ANY_DESTID(port->sys_size),
+ hopcount,
+ RIO_HOST_DID_LOCK_CSR,
+ port->host_deviceid);
+ }
+
+ if (rio_get_host_deviceid_lock(port, hopcount) > port->host_deviceid) {
+ pr_debug(
+ "RIO: PE locked by a higher priority host...retreating\n");
+ return -1;
+ }
+
+ /* Setup new RIO device */
+ rdev = rio_setup_device(net, port, RIO_ANY_DESTID(port->sys_size),
+ hopcount, 1);
+ if (rdev) {
+ /* Add device to the global and bus/net specific list. */
+ list_add_tail(&rdev->net_list, &net->devices);
+ rdev->prev = prev;
+ if (prev && rio_is_switch(prev))
+ prev->rswitch->nextdev[prev_port] = rdev;
+ } else
+ return -1;
+
+ if (rio_is_switch(rdev)) {
+ sw_inport = RIO_GET_PORT_NUM(rdev->swpinfo);
+ rio_route_add_entry(rdev, RIO_GLOBAL_TABLE,
+ port->host_deviceid, sw_inport, 0);
+ rdev->rswitch->route_table[port->host_deviceid] = sw_inport;
+
+ for (destid = 0; destid < next_destid; destid++) {
+ if (destid == port->host_deviceid)
+ continue;
+ rio_route_add_entry(rdev, RIO_GLOBAL_TABLE,
+ destid, sw_inport, 0);
+ rdev->rswitch->route_table[destid] = sw_inport;
+ }
+
+ pr_debug(
+ "RIO: found %s (vid %4.4x did %4.4x) with %d ports\n",
+ rio_name(rdev), rdev->vid, rdev->did,
+ RIO_GET_TOTAL_PORTS(rdev->swpinfo));
+ sw_destid = next_destid;
+ for (port_num = 0;
+ port_num < RIO_GET_TOTAL_PORTS(rdev->swpinfo);
+ port_num++) {
+ /*Enable Input Output Port (transmitter reviever)*/
+ rio_enable_rx_tx_port(port, 0,
+ RIO_ANY_DESTID(port->sys_size),
+ hopcount, port_num);
+
+ if (sw_inport == port_num) {
+ rdev->rswitch->port_ok |= (1 << port_num);
+ continue;
+ }
+
+ cur_destid = next_destid;
+
+ if (rio_sport_is_active
+ (port, RIO_ANY_DESTID(port->sys_size), hopcount,
+ port_num)) {
+ pr_debug(
+ "RIO: scanning device on port %d\n",
+ port_num);
+ rdev->rswitch->port_ok |= (1 << port_num);
+ rio_route_add_entry(rdev, RIO_GLOBAL_TABLE,
+ RIO_ANY_DESTID(port->sys_size),
+ port_num, 0);
+
+ if (rio_enum_peer(net, port, hopcount + 1,
+ rdev, port_num) < 0)
+ return -1;
+
+ /* Update routing tables */
+ if (next_destid > cur_destid) {
+ for (destid = cur_destid;
+ destid < next_destid; destid++) {
+ if (destid == port->host_deviceid)
+ continue;
+ rio_route_add_entry(rdev,
+ RIO_GLOBAL_TABLE,
+ destid,
+ port_num,
+ 0);
+ rdev->rswitch->
+ route_table[destid] =
+ port_num;
+ }
+ }
+ } else {
+ /* If switch supports Error Management,
+ * set PORT_LOCKOUT bit for unused port
+ */
+ if (rdev->em_efptr)
+ rio_set_port_lockout(rdev, port_num, 1);
+
+ rdev->rswitch->port_ok &= ~(1 << port_num);
+ }
+ }
+
+ /* Direct Port-write messages to the enumeratiing host */
+ if ((rdev->src_ops & RIO_SRC_OPS_PORT_WRITE) &&
+ (rdev->em_efptr)) {
+ rio_write_config_32(rdev,
+ rdev->em_efptr + RIO_EM_PW_TGT_DEVID,
+ (port->host_deviceid << 16) |
+ (port->sys_size << 15));
+ }
+
+ rio_init_em(rdev);
+
+ /* Check for empty switch */
+ if (next_destid == sw_destid) {
+ next_destid++;
+ if (next_destid == port->host_deviceid)
+ next_destid++;
+ }
+
+ rdev->destid = sw_destid;
+ } else
+ pr_debug("RIO: found %s (vid %4.4x did %4.4x)\n",
+ rio_name(rdev), rdev->vid, rdev->did);
+
+ return 0;
+}
+
+/**
+ * rio_enum_complete- Tests if enumeration of a network is complete
+ * @port: Master port to send transaction
+ *
+ * Tests the PGCCSR discovered bit for non-zero value (enumeration
+ * complete flag). Return %1 if enumeration is complete or %0 if
+ * enumeration is incomplete.
+ */
+static int rio_enum_complete(struct rio_mport *port)
+{
+ u32 regval;
+
+ rio_local_read_config_32(port, port->phys_efptr + RIO_PORT_GEN_CTL_CSR,
+ &regval);
+ return (regval & RIO_PORT_GEN_DISCOVERED) ? 1 : 0;
+}
+
+/**
+ * rio_disc_peer- Recursively discovers a RIO network through a master port
+ * @net: RIO network being discovered
+ * @port: Master port to send transactions
+ * @destid: Current destination ID in network
+ * @hopcount: Number of hops into the network
+ * @prev: previous rio_dev
+ * @prev_port: previous port number
+ *
+ * Recursively discovers a RIO network. Transactions are sent via the
+ * master port passed in @port.
+ */
+static int __devinit
+rio_disc_peer(struct rio_net *net, struct rio_mport *port, u16 destid,
+ u8 hopcount, struct rio_dev *prev, int prev_port)
+{
+ u8 port_num, route_port;
+ struct rio_dev *rdev;
+ u16 ndestid;
+
+ /* Setup new RIO device */
+ if ((rdev = rio_setup_device(net, port, destid, hopcount, 0))) {
+ /* Add device to the global and bus/net specific list. */
+ list_add_tail(&rdev->net_list, &net->devices);
+ rdev->prev = prev;
+ if (prev && rio_is_switch(prev))
+ prev->rswitch->nextdev[prev_port] = rdev;
+ } else
+ return -1;
+
+ if (rio_is_switch(rdev)) {
+ /* Associated destid is how we accessed this switch */
+ rdev->destid = destid;
+
+ pr_debug(
+ "RIO: found %s (vid %4.4x did %4.4x) with %d ports\n",
+ rio_name(rdev), rdev->vid, rdev->did,
+ RIO_GET_TOTAL_PORTS(rdev->swpinfo));
+ for (port_num = 0;
+ port_num < RIO_GET_TOTAL_PORTS(rdev->swpinfo);
+ port_num++) {
+ if (RIO_GET_PORT_NUM(rdev->swpinfo) == port_num)
+ continue;
+
+ if (rio_sport_is_active
+ (port, destid, hopcount, port_num)) {
+ pr_debug(
+ "RIO: scanning device on port %d\n",
+ port_num);
+
+ rio_lock_device(port, destid, hopcount, 1000);
+
+ for (ndestid = 0;
+ ndestid < RIO_ANY_DESTID(port->sys_size);
+ ndestid++) {
+ rio_route_get_entry(rdev,
+ RIO_GLOBAL_TABLE,
+ ndestid,
+ &route_port, 0);
+ if (route_port == port_num)
+ break;
+ }
+
+ if (ndestid == RIO_ANY_DESTID(port->sys_size))
+ continue;
+ rio_unlock_device(port, destid, hopcount);
+ if (rio_disc_peer(net, port, ndestid,
+ hopcount + 1, rdev, port_num) < 0)
+ return -1;
+ }
+ }
+ } else
+ pr_debug("RIO: found %s (vid %4.4x did %4.4x)\n",
+ rio_name(rdev), rdev->vid, rdev->did);
+
+ return 0;
+}
+
+/**
+ * rio_mport_is_active- Tests if master port link is active
+ * @port: Master port to test
+ *
+ * Reads the port error status CSR for the master port to
+ * determine if the port has an active link. Returns
+ * %RIO_PORT_N_ERR_STS_PORT_OK if the master port is active
+ * or %0 if it is inactive.
+ */
+static int rio_mport_is_active(struct rio_mport *port)
+{
+ u32 result = 0;
+ u32 ext_ftr_ptr;
+ int *entry = rio_mport_phys_table;
+
+ do {
+ if ((ext_ftr_ptr =
+ rio_mport_get_feature(port, 1, 0, 0, *entry)))
+ break;
+ } while (*++entry >= 0);
+
+ if (ext_ftr_ptr)
+ rio_local_read_config_32(port,
+ ext_ftr_ptr +
+ RIO_PORT_N_ERR_STS_CSR(port->index),
+ &result);
+
+ return result & RIO_PORT_N_ERR_STS_PORT_OK;
+}
+
+/**
+ * rio_alloc_net- Allocate and configure a new RIO network
+ * @port: Master port associated with the RIO network
+ *
+ * Allocates a RIO network structure, initializes per-network
+ * list heads, and adds the associated master port to the
+ * network list of associated master ports. Returns a
+ * RIO network pointer on success or %NULL on failure.
+ */
+static struct rio_net __devinit *rio_alloc_net(struct rio_mport *port)
+{
+ struct rio_net *net;
+
+ net = kzalloc(sizeof(struct rio_net), GFP_KERNEL);
+ if (net) {
+ INIT_LIST_HEAD(&net->node);
+ INIT_LIST_HEAD(&net->devices);
+ INIT_LIST_HEAD(&net->mports);
+ list_add_tail(&port->nnode, &net->mports);
+ net->hport = port;
+ net->id = next_net++;
+ }
+ return net;
+}
+
+/**
+ * rio_update_route_tables- Updates route tables in switches
+ * @port: Master port associated with the RIO network
+ *
+ * For each enumerated device, ensure that each switch in a system
+ * has correct routing entries. Add routes for devices that where
+ * unknown dirung the first enumeration pass through the switch.
+ */
+static void rio_update_route_tables(struct rio_mport *port)
+{
+ struct rio_dev *rdev, *swrdev;
+ struct rio_switch *rswitch;
+ u8 sport;
+ u16 destid;
+
+ list_for_each_entry(rdev, &rio_devices, global_list) {
+
+ destid = rdev->destid;
+
+ list_for_each_entry(rswitch, &rio_switches, node) {
+
+ if (rio_is_switch(rdev) && (rdev->rswitch == rswitch))
+ continue;
+
+ if (RIO_INVALID_ROUTE == rswitch->route_table[destid]) {
+ swrdev = sw_to_rio_dev(rswitch);
+
+ /* Skip if destid ends in empty switch*/
+ if (swrdev->destid == destid)
+ continue;
+
+ sport = RIO_GET_PORT_NUM(swrdev->swpinfo);
+
+ if (rswitch->add_entry) {
+ rio_route_add_entry(swrdev,
+ RIO_GLOBAL_TABLE, destid,
+ sport, 0);
+ rswitch->route_table[destid] = sport;
+ }
+ }
+ }
+ }
+}
+
+/**
+ * rio_init_em - Initializes RIO Error Management (for switches)
+ * @rdev: RIO device
+ *
+ * For each enumerated switch, call device-specific error management
+ * initialization routine (if supplied by the switch driver).
+ */
+static void rio_init_em(struct rio_dev *rdev)
+{
+ if (rio_is_switch(rdev) && (rdev->em_efptr) &&
+ (rdev->rswitch->em_init)) {
+ rdev->rswitch->em_init(rdev);
+ }
+}
+
+/**
+ * rio_pw_enable - Enables/disables port-write handling by a master port
+ * @port: Master port associated with port-write handling
+ * @enable: 1=enable, 0=disable
+ */
+static void rio_pw_enable(struct rio_mport *port, int enable)
+{
+ if (port->ops->pwenable)
+ port->ops->pwenable(port, enable);
+}
+
+/**
+ * rio_enum_mport- Start enumeration through a master port
+ * @mport: Master port to send transactions
+ *
+ * Starts the enumeration process. If somebody has enumerated our
+ * master port device, then give up. If not and we have an active
+ * link, then start recursive peer enumeration. Returns %0 if
+ * enumeration succeeds or %-EBUSY if enumeration fails.
+ */
+int __devinit rio_enum_mport(struct rio_mport *mport)
+{
+ struct rio_net *net = NULL;
+ int rc = 0;
+
+ printk(KERN_INFO "RIO: enumerate master port %d, %s\n", mport->id,
+ mport->name);
+ /* If somebody else enumerated our master port device, bail. */
+ if (rio_enum_host(mport) < 0) {
+ printk(KERN_INFO
+ "RIO: master port %d device has been enumerated by a remote host\n",
+ mport->id);
+ rc = -EBUSY;
+ goto out;
+ }
+
+ /* If master port has an active link, allocate net and enum peers */
+ if (rio_mport_is_active(mport)) {
+ if (!(net = rio_alloc_net(mport))) {
+ printk(KERN_ERR "RIO: failed to allocate new net\n");
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ /* Enable Input Output Port (transmitter reviever) */
+ rio_enable_rx_tx_port(mport, 1, 0, 0, 0);
+
+ /* Set component tag for host */
+ rio_local_write_config_32(mport, RIO_COMPONENT_TAG_CSR,
+ next_comptag++);
+
+ if (rio_enum_peer(net, mport, 0, NULL, 0) < 0) {
+ /* A higher priority host won enumeration, bail. */
+ printk(KERN_INFO
+ "RIO: master port %d device has lost enumeration to a remote host\n",
+ mport->id);
+ rio_clear_locks(mport);
+ rc = -EBUSY;
+ goto out;
+ }
+ rio_update_route_tables(mport);
+ rio_clear_locks(mport);
+ rio_pw_enable(mport, 1);
+ } else {
+ printk(KERN_INFO "RIO: master port %d link inactive\n",
+ mport->id);
+ rc = -EINVAL;
+ }
+
+ out:
+ return rc;
+}
+
+/**
+ * rio_build_route_tables- Generate route tables from switch route entries
+ *
+ * For each switch device, generate a route table by copying existing
+ * route entries from the switch.
+ */
+static void rio_build_route_tables(void)
+{
+ struct rio_dev *rdev;
+ int i;
+ u8 sport;
+
+ list_for_each_entry(rdev, &rio_devices, global_list)
+ if (rio_is_switch(rdev)) {
+ rio_lock_device(rdev->net->hport, rdev->destid,
+ rdev->hopcount, 1000);
+ for (i = 0;
+ i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
+ i++) {
+ if (rio_route_get_entry(rdev,
+ RIO_GLOBAL_TABLE, i, &sport, 0) < 0)
+ continue;
+ rdev->rswitch->route_table[i] = sport;
+ }
+
+ rio_unlock_device(rdev->net->hport,
+ rdev->destid,
+ rdev->hopcount);
+ }
+}
+
+/**
+ * rio_enum_timeout- Signal that enumeration timed out
+ * @data: Address of timeout flag.
+ *
+ * When the enumeration complete timer expires, set a flag that
+ * signals to the discovery process that enumeration did not
+ * complete in a sane amount of time.
+ */
+static void rio_enum_timeout(unsigned long data)
+{
+ /* Enumeration timed out, set flag */
+ *(int *)data = 1;
+}
+
+/**
+ * rio_disc_mport- Start discovery through a master port
+ * @mport: Master port to send transactions
+ *
+ * Starts the discovery process. If we have an active link,
+ * then wait for the signal that enumeration is complete.
+ * When enumeration completion is signaled, start recursive
+ * peer discovery. Returns %0 if discovery succeeds or %-EBUSY
+ * on failure.
+ */
+int __devinit rio_disc_mport(struct rio_mport *mport)
+{
+ struct rio_net *net = NULL;
+ int enum_timeout_flag = 0;
+
+ printk(KERN_INFO "RIO: discover master port %d, %s\n", mport->id,
+ mport->name);
+
+ /* If master port has an active link, allocate net and discover peers */
+ if (rio_mport_is_active(mport)) {
+ if (!(net = rio_alloc_net(mport))) {
+ printk(KERN_ERR "RIO: Failed to allocate new net\n");
+ goto bail;
+ }
+
+ pr_debug("RIO: wait for enumeration complete...");
+
+ rio_enum_timer.expires =
+ jiffies + CONFIG_RAPIDIO_DISC_TIMEOUT * HZ;
+ rio_enum_timer.data = (unsigned long)&enum_timeout_flag;
+ add_timer(&rio_enum_timer);
+ while (!rio_enum_complete(mport)) {
+ mdelay(1);
+ if (enum_timeout_flag) {
+ del_timer_sync(&rio_enum_timer);
+ goto timeout;
+ }
+ }
+ del_timer_sync(&rio_enum_timer);
+
+ pr_debug("done\n");
+
+ /* Read DestID assigned by enumerator */
+ rio_local_read_config_32(mport, RIO_DID_CSR,
+ &mport->host_deviceid);
+ mport->host_deviceid = RIO_GET_DID(mport->sys_size,
+ mport->host_deviceid);
+
+ if (rio_disc_peer(net, mport, RIO_ANY_DESTID(mport->sys_size),
+ 0, NULL, 0) < 0) {
+ printk(KERN_INFO
+ "RIO: master port %d device has failed discovery\n",
+ mport->id);
+ goto bail;
+ }
+
+ rio_build_route_tables();
+ }
+
+ return 0;
+
+ timeout:
+ pr_debug("timeout\n");
+ bail:
+ return -EBUSY;
+}
diff --git a/drivers/rapidio/rio-sysfs.c b/drivers/rapidio/rio-sysfs.c
new file mode 100644
index 00000000..4dbe3609
--- /dev/null
+++ b/drivers/rapidio/rio-sysfs.c
@@ -0,0 +1,287 @@
+/*
+ * RapidIO sysfs attributes and support
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/stat.h>
+#include <linux/capability.h>
+
+#include "rio.h"
+
+/* Sysfs support */
+#define rio_config_attr(field, format_string) \
+static ssize_t \
+field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
+{ \
+ struct rio_dev *rdev = to_rio_dev(dev); \
+ \
+ return sprintf(buf, format_string, rdev->field); \
+} \
+
+rio_config_attr(did, "0x%04x\n");
+rio_config_attr(vid, "0x%04x\n");
+rio_config_attr(device_rev, "0x%08x\n");
+rio_config_attr(asm_did, "0x%04x\n");
+rio_config_attr(asm_vid, "0x%04x\n");
+rio_config_attr(asm_rev, "0x%04x\n");
+rio_config_attr(destid, "0x%04x\n");
+rio_config_attr(hopcount, "0x%02x\n");
+
+static ssize_t routes_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ char *str = buf;
+ int i;
+
+ for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
+ i++) {
+ if (rdev->rswitch->route_table[i] == RIO_INVALID_ROUTE)
+ continue;
+ str +=
+ sprintf(str, "%04x %02x\n", i,
+ rdev->rswitch->route_table[i]);
+ }
+
+ return (str - buf);
+}
+
+static ssize_t lprev_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+
+ return sprintf(buf, "%s\n",
+ (rdev->prev) ? rio_name(rdev->prev) : "root");
+}
+
+static ssize_t lnext_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ char *str = buf;
+ int i;
+
+ if (rdev->pef & RIO_PEF_SWITCH) {
+ for (i = 0; i < RIO_GET_TOTAL_PORTS(rdev->swpinfo); i++) {
+ if (rdev->rswitch->nextdev[i])
+ str += sprintf(str, "%s\n",
+ rio_name(rdev->rswitch->nextdev[i]));
+ else
+ str += sprintf(str, "null\n");
+ }
+ }
+
+ return str - buf;
+}
+
+struct device_attribute rio_dev_attrs[] = {
+ __ATTR_RO(did),
+ __ATTR_RO(vid),
+ __ATTR_RO(device_rev),
+ __ATTR_RO(asm_did),
+ __ATTR_RO(asm_vid),
+ __ATTR_RO(asm_rev),
+ __ATTR_RO(lprev),
+ __ATTR_RO(destid),
+ __ATTR_NULL,
+};
+
+static DEVICE_ATTR(routes, S_IRUGO, routes_show, NULL);
+static DEVICE_ATTR(lnext, S_IRUGO, lnext_show, NULL);
+static DEVICE_ATTR(hopcount, S_IRUGO, hopcount_show, NULL);
+
+static ssize_t
+rio_read_config(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct rio_dev *dev =
+ to_rio_dev(container_of(kobj, struct device, kobj));
+ unsigned int size = 0x100;
+ loff_t init_off = off;
+ u8 *data = (u8 *) buf;
+
+ /* Several chips lock up trying to read undefined config space */
+ if (capable(CAP_SYS_ADMIN))
+ size = RIO_MAINT_SPACE_SZ;
+
+ if (off >= size)
+ return 0;
+ if (off + count > size) {
+ size -= off;
+ count = size;
+ } else {
+ size = count;
+ }
+
+ if ((off & 1) && size) {
+ u8 val;
+ rio_read_config_8(dev, off, &val);
+ data[off - init_off] = val;
+ off++;
+ size--;
+ }
+
+ if ((off & 3) && size > 2) {
+ u16 val;
+ rio_read_config_16(dev, off, &val);
+ data[off - init_off] = (val >> 8) & 0xff;
+ data[off - init_off + 1] = val & 0xff;
+ off += 2;
+ size -= 2;
+ }
+
+ while (size > 3) {
+ u32 val;
+ rio_read_config_32(dev, off, &val);
+ data[off - init_off] = (val >> 24) & 0xff;
+ data[off - init_off + 1] = (val >> 16) & 0xff;
+ data[off - init_off + 2] = (val >> 8) & 0xff;
+ data[off - init_off + 3] = val & 0xff;
+ off += 4;
+ size -= 4;
+ }
+
+ if (size >= 2) {
+ u16 val;
+ rio_read_config_16(dev, off, &val);
+ data[off - init_off] = (val >> 8) & 0xff;
+ data[off - init_off + 1] = val & 0xff;
+ off += 2;
+ size -= 2;
+ }
+
+ if (size > 0) {
+ u8 val;
+ rio_read_config_8(dev, off, &val);
+ data[off - init_off] = val;
+ off++;
+ --size;
+ }
+
+ return count;
+}
+
+static ssize_t
+rio_write_config(struct file *filp, struct kobject *kobj,
+ struct bin_attribute *bin_attr,
+ char *buf, loff_t off, size_t count)
+{
+ struct rio_dev *dev =
+ to_rio_dev(container_of(kobj, struct device, kobj));
+ unsigned int size = count;
+ loff_t init_off = off;
+ u8 *data = (u8 *) buf;
+
+ if (off >= RIO_MAINT_SPACE_SZ)
+ return 0;
+ if (off + count > RIO_MAINT_SPACE_SZ) {
+ size = RIO_MAINT_SPACE_SZ - off;
+ count = size;
+ }
+
+ if ((off & 1) && size) {
+ rio_write_config_8(dev, off, data[off - init_off]);
+ off++;
+ size--;
+ }
+
+ if ((off & 3) && (size > 2)) {
+ u16 val = data[off - init_off + 1];
+ val |= (u16) data[off - init_off] << 8;
+ rio_write_config_16(dev, off, val);
+ off += 2;
+ size -= 2;
+ }
+
+ while (size > 3) {
+ u32 val = data[off - init_off + 3];
+ val |= (u32) data[off - init_off + 2] << 8;
+ val |= (u32) data[off - init_off + 1] << 16;
+ val |= (u32) data[off - init_off] << 24;
+ rio_write_config_32(dev, off, val);
+ off += 4;
+ size -= 4;
+ }
+
+ if (size >= 2) {
+ u16 val = data[off - init_off + 1];
+ val |= (u16) data[off - init_off] << 8;
+ rio_write_config_16(dev, off, val);
+ off += 2;
+ size -= 2;
+ }
+
+ if (size) {
+ rio_write_config_8(dev, off, data[off - init_off]);
+ off++;
+ --size;
+ }
+
+ return count;
+}
+
+static struct bin_attribute rio_config_attr = {
+ .attr = {
+ .name = "config",
+ .mode = S_IRUGO | S_IWUSR,
+ },
+ .size = RIO_MAINT_SPACE_SZ,
+ .read = rio_read_config,
+ .write = rio_write_config,
+};
+
+/**
+ * rio_create_sysfs_dev_files - create RIO specific sysfs files
+ * @rdev: device whose entries should be created
+ *
+ * Create files when @rdev is added to sysfs.
+ */
+int rio_create_sysfs_dev_files(struct rio_dev *rdev)
+{
+ int err = 0;
+
+ err = device_create_bin_file(&rdev->dev, &rio_config_attr);
+
+ if (!err && (rdev->pef & RIO_PEF_SWITCH)) {
+ err |= device_create_file(&rdev->dev, &dev_attr_routes);
+ err |= device_create_file(&rdev->dev, &dev_attr_lnext);
+ err |= device_create_file(&rdev->dev, &dev_attr_hopcount);
+ if (!err && rdev->rswitch->sw_sysfs)
+ err = rdev->rswitch->sw_sysfs(rdev, RIO_SW_SYSFS_CREATE);
+ }
+
+ if (err)
+ pr_warning("RIO: Failed to create attribute file(s) for %s\n",
+ rio_name(rdev));
+
+ return err;
+}
+
+/**
+ * rio_remove_sysfs_dev_files - cleanup RIO specific sysfs files
+ * @rdev: device whose entries we should free
+ *
+ * Cleanup when @rdev is removed from sysfs.
+ */
+void rio_remove_sysfs_dev_files(struct rio_dev *rdev)
+{
+ device_remove_bin_file(&rdev->dev, &rio_config_attr);
+ if (rdev->pef & RIO_PEF_SWITCH) {
+ device_remove_file(&rdev->dev, &dev_attr_routes);
+ device_remove_file(&rdev->dev, &dev_attr_lnext);
+ device_remove_file(&rdev->dev, &dev_attr_hopcount);
+ if (rdev->rswitch->sw_sysfs)
+ rdev->rswitch->sw_sysfs(rdev, RIO_SW_SYSFS_REMOVE);
+ }
+}
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c
new file mode 100644
index 00000000..86c9a091
--- /dev/null
+++ b/drivers/rapidio/rio.c
@@ -0,0 +1,1197 @@
+/*
+ * RapidIO interconnect services
+ * (RapidIO Interconnect Specification, http://www.rapidio.org)
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * Copyright 2009 Integrated Device Technology, Inc.
+ * Alex Bounine <alexandre.bounine@idt.com>
+ * - Added Port-Write/Error Management initialization and handling
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/rio_regs.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+
+#include "rio.h"
+
+static LIST_HEAD(rio_mports);
+static unsigned char next_portid;
+
+/**
+ * rio_local_get_device_id - Get the base/extended device id for a port
+ * @port: RIO master port from which to get the deviceid
+ *
+ * Reads the base/extended device id from the local device
+ * implementing the master port. Returns the 8/16-bit device
+ * id.
+ */
+u16 rio_local_get_device_id(struct rio_mport *port)
+{
+ u32 result;
+
+ rio_local_read_config_32(port, RIO_DID_CSR, &result);
+
+ return (RIO_GET_DID(port->sys_size, result));
+}
+
+/**
+ * rio_request_inb_mbox - request inbound mailbox service
+ * @mport: RIO master port from which to allocate the mailbox resource
+ * @dev_id: Device specific pointer to pass on event
+ * @mbox: Mailbox number to claim
+ * @entries: Number of entries in inbound mailbox queue
+ * @minb: Callback to execute when inbound message is received
+ *
+ * Requests ownership of an inbound mailbox resource and binds
+ * a callback function to the resource. Returns %0 on success.
+ */
+int rio_request_inb_mbox(struct rio_mport *mport,
+ void *dev_id,
+ int mbox,
+ int entries,
+ void (*minb) (struct rio_mport * mport, void *dev_id, int mbox,
+ int slot))
+{
+ int rc = -ENOSYS;
+ struct resource *res;
+
+ if (mport->ops->open_inb_mbox == NULL)
+ goto out;
+
+ res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+
+ if (res) {
+ rio_init_mbox_res(res, mbox, mbox);
+
+ /* Make sure this mailbox isn't in use */
+ if ((rc =
+ request_resource(&mport->riores[RIO_INB_MBOX_RESOURCE],
+ res)) < 0) {
+ kfree(res);
+ goto out;
+ }
+
+ mport->inb_msg[mbox].res = res;
+
+ /* Hook the inbound message callback */
+ mport->inb_msg[mbox].mcback = minb;
+
+ rc = mport->ops->open_inb_mbox(mport, dev_id, mbox, entries);
+ } else
+ rc = -ENOMEM;
+
+ out:
+ return rc;
+}
+
+/**
+ * rio_release_inb_mbox - release inbound mailbox message service
+ * @mport: RIO master port from which to release the mailbox resource
+ * @mbox: Mailbox number to release
+ *
+ * Releases ownership of an inbound mailbox resource. Returns 0
+ * if the request has been satisfied.
+ */
+int rio_release_inb_mbox(struct rio_mport *mport, int mbox)
+{
+ if (mport->ops->close_inb_mbox) {
+ mport->ops->close_inb_mbox(mport, mbox);
+
+ /* Release the mailbox resource */
+ return release_resource(mport->inb_msg[mbox].res);
+ } else
+ return -ENOSYS;
+}
+
+/**
+ * rio_request_outb_mbox - request outbound mailbox service
+ * @mport: RIO master port from which to allocate the mailbox resource
+ * @dev_id: Device specific pointer to pass on event
+ * @mbox: Mailbox number to claim
+ * @entries: Number of entries in outbound mailbox queue
+ * @moutb: Callback to execute when outbound message is sent
+ *
+ * Requests ownership of an outbound mailbox resource and binds
+ * a callback function to the resource. Returns 0 on success.
+ */
+int rio_request_outb_mbox(struct rio_mport *mport,
+ void *dev_id,
+ int mbox,
+ int entries,
+ void (*moutb) (struct rio_mport * mport, void *dev_id, int mbox, int slot))
+{
+ int rc = -ENOSYS;
+ struct resource *res;
+
+ if (mport->ops->open_outb_mbox == NULL)
+ goto out;
+
+ res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+
+ if (res) {
+ rio_init_mbox_res(res, mbox, mbox);
+
+ /* Make sure this outbound mailbox isn't in use */
+ if ((rc =
+ request_resource(&mport->riores[RIO_OUTB_MBOX_RESOURCE],
+ res)) < 0) {
+ kfree(res);
+ goto out;
+ }
+
+ mport->outb_msg[mbox].res = res;
+
+ /* Hook the inbound message callback */
+ mport->outb_msg[mbox].mcback = moutb;
+
+ rc = mport->ops->open_outb_mbox(mport, dev_id, mbox, entries);
+ } else
+ rc = -ENOMEM;
+
+ out:
+ return rc;
+}
+
+/**
+ * rio_release_outb_mbox - release outbound mailbox message service
+ * @mport: RIO master port from which to release the mailbox resource
+ * @mbox: Mailbox number to release
+ *
+ * Releases ownership of an inbound mailbox resource. Returns 0
+ * if the request has been satisfied.
+ */
+int rio_release_outb_mbox(struct rio_mport *mport, int mbox)
+{
+ if (mport->ops->close_outb_mbox) {
+ mport->ops->close_outb_mbox(mport, mbox);
+
+ /* Release the mailbox resource */
+ return release_resource(mport->outb_msg[mbox].res);
+ } else
+ return -ENOSYS;
+}
+
+/**
+ * rio_setup_inb_dbell - bind inbound doorbell callback
+ * @mport: RIO master port to bind the doorbell callback
+ * @dev_id: Device specific pointer to pass on event
+ * @res: Doorbell message resource
+ * @dinb: Callback to execute when doorbell is received
+ *
+ * Adds a doorbell resource/callback pair into a port's
+ * doorbell event list. Returns 0 if the request has been
+ * satisfied.
+ */
+static int
+rio_setup_inb_dbell(struct rio_mport *mport, void *dev_id, struct resource *res,
+ void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src, u16 dst,
+ u16 info))
+{
+ int rc = 0;
+ struct rio_dbell *dbell;
+
+ if (!(dbell = kmalloc(sizeof(struct rio_dbell), GFP_KERNEL))) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ dbell->res = res;
+ dbell->dinb = dinb;
+ dbell->dev_id = dev_id;
+
+ list_add_tail(&dbell->node, &mport->dbells);
+
+ out:
+ return rc;
+}
+
+/**
+ * rio_request_inb_dbell - request inbound doorbell message service
+ * @mport: RIO master port from which to allocate the doorbell resource
+ * @dev_id: Device specific pointer to pass on event
+ * @start: Doorbell info range start
+ * @end: Doorbell info range end
+ * @dinb: Callback to execute when doorbell is received
+ *
+ * Requests ownership of an inbound doorbell resource and binds
+ * a callback function to the resource. Returns 0 if the request
+ * has been satisfied.
+ */
+int rio_request_inb_dbell(struct rio_mport *mport,
+ void *dev_id,
+ u16 start,
+ u16 end,
+ void (*dinb) (struct rio_mport * mport, void *dev_id, u16 src,
+ u16 dst, u16 info))
+{
+ int rc = 0;
+
+ struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+
+ if (res) {
+ rio_init_dbell_res(res, start, end);
+
+ /* Make sure these doorbells aren't in use */
+ if ((rc =
+ request_resource(&mport->riores[RIO_DOORBELL_RESOURCE],
+ res)) < 0) {
+ kfree(res);
+ goto out;
+ }
+
+ /* Hook the doorbell callback */
+ rc = rio_setup_inb_dbell(mport, dev_id, res, dinb);
+ } else
+ rc = -ENOMEM;
+
+ out:
+ return rc;
+}
+
+/**
+ * rio_release_inb_dbell - release inbound doorbell message service
+ * @mport: RIO master port from which to release the doorbell resource
+ * @start: Doorbell info range start
+ * @end: Doorbell info range end
+ *
+ * Releases ownership of an inbound doorbell resource and removes
+ * callback from the doorbell event list. Returns 0 if the request
+ * has been satisfied.
+ */
+int rio_release_inb_dbell(struct rio_mport *mport, u16 start, u16 end)
+{
+ int rc = 0, found = 0;
+ struct rio_dbell *dbell;
+
+ list_for_each_entry(dbell, &mport->dbells, node) {
+ if ((dbell->res->start == start) && (dbell->res->end == end)) {
+ found = 1;
+ break;
+ }
+ }
+
+ /* If we can't find an exact match, fail */
+ if (!found) {
+ rc = -EINVAL;
+ goto out;
+ }
+
+ /* Delete from list */
+ list_del(&dbell->node);
+
+ /* Release the doorbell resource */
+ rc = release_resource(dbell->res);
+
+ /* Free the doorbell event */
+ kfree(dbell);
+
+ out:
+ return rc;
+}
+
+/**
+ * rio_request_outb_dbell - request outbound doorbell message range
+ * @rdev: RIO device from which to allocate the doorbell resource
+ * @start: Doorbell message range start
+ * @end: Doorbell message range end
+ *
+ * Requests ownership of a doorbell message range. Returns a resource
+ * if the request has been satisfied or %NULL on failure.
+ */
+struct resource *rio_request_outb_dbell(struct rio_dev *rdev, u16 start,
+ u16 end)
+{
+ struct resource *res = kmalloc(sizeof(struct resource), GFP_KERNEL);
+
+ if (res) {
+ rio_init_dbell_res(res, start, end);
+
+ /* Make sure these doorbells aren't in use */
+ if (request_resource(&rdev->riores[RIO_DOORBELL_RESOURCE], res)
+ < 0) {
+ kfree(res);
+ res = NULL;
+ }
+ }
+
+ return res;
+}
+
+/**
+ * rio_release_outb_dbell - release outbound doorbell message range
+ * @rdev: RIO device from which to release the doorbell resource
+ * @res: Doorbell resource to be freed
+ *
+ * Releases ownership of a doorbell message range. Returns 0 if the
+ * request has been satisfied.
+ */
+int rio_release_outb_dbell(struct rio_dev *rdev, struct resource *res)
+{
+ int rc = release_resource(res);
+
+ kfree(res);
+
+ return rc;
+}
+
+/**
+ * rio_request_inb_pwrite - request inbound port-write message service
+ * @rdev: RIO device to which register inbound port-write callback routine
+ * @pwcback: Callback routine to execute when port-write is received
+ *
+ * Binds a port-write callback function to the RapidIO device.
+ * Returns 0 if the request has been satisfied.
+ */
+int rio_request_inb_pwrite(struct rio_dev *rdev,
+ int (*pwcback)(struct rio_dev *rdev, union rio_pw_msg *msg, int step))
+{
+ int rc = 0;
+
+ spin_lock(&rio_global_list_lock);
+ if (rdev->pwcback != NULL)
+ rc = -ENOMEM;
+ else
+ rdev->pwcback = pwcback;
+
+ spin_unlock(&rio_global_list_lock);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(rio_request_inb_pwrite);
+
+/**
+ * rio_release_inb_pwrite - release inbound port-write message service
+ * @rdev: RIO device which registered for inbound port-write callback
+ *
+ * Removes callback from the rio_dev structure. Returns 0 if the request
+ * has been satisfied.
+ */
+int rio_release_inb_pwrite(struct rio_dev *rdev)
+{
+ int rc = -ENOMEM;
+
+ spin_lock(&rio_global_list_lock);
+ if (rdev->pwcback) {
+ rdev->pwcback = NULL;
+ rc = 0;
+ }
+
+ spin_unlock(&rio_global_list_lock);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(rio_release_inb_pwrite);
+
+/**
+ * rio_mport_get_physefb - Helper function that returns register offset
+ * for Physical Layer Extended Features Block.
+ * @port: Master port to issue transaction
+ * @local: Indicate a local master port or remote device access
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ */
+u32
+rio_mport_get_physefb(struct rio_mport *port, int local,
+ u16 destid, u8 hopcount)
+{
+ u32 ext_ftr_ptr;
+ u32 ftr_header;
+
+ ext_ftr_ptr = rio_mport_get_efb(port, local, destid, hopcount, 0);
+
+ while (ext_ftr_ptr) {
+ if (local)
+ rio_local_read_config_32(port, ext_ftr_ptr,
+ &ftr_header);
+ else
+ rio_mport_read_config_32(port, destid, hopcount,
+ ext_ftr_ptr, &ftr_header);
+
+ ftr_header = RIO_GET_BLOCK_ID(ftr_header);
+ switch (ftr_header) {
+
+ case RIO_EFB_SER_EP_ID_V13P:
+ case RIO_EFB_SER_EP_REC_ID_V13P:
+ case RIO_EFB_SER_EP_FREE_ID_V13P:
+ case RIO_EFB_SER_EP_ID:
+ case RIO_EFB_SER_EP_REC_ID:
+ case RIO_EFB_SER_EP_FREE_ID:
+ case RIO_EFB_SER_EP_FREC_ID:
+
+ return ext_ftr_ptr;
+
+ default:
+ break;
+ }
+
+ ext_ftr_ptr = rio_mport_get_efb(port, local, destid,
+ hopcount, ext_ftr_ptr);
+ }
+
+ return ext_ftr_ptr;
+}
+
+/**
+ * rio_get_comptag - Begin or continue searching for a RIO device by component tag
+ * @comp_tag: RIO component tag to match
+ * @from: Previous RIO device found in search, or %NULL for new search
+ *
+ * Iterates through the list of known RIO devices. If a RIO device is
+ * found with a matching @comp_tag, a pointer to its device
+ * structure is returned. Otherwise, %NULL is returned. A new search
+ * is initiated by passing %NULL to the @from argument. Otherwise, if
+ * @from is not %NULL, searches continue from next device on the global
+ * list.
+ */
+struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from)
+{
+ struct list_head *n;
+ struct rio_dev *rdev;
+
+ spin_lock(&rio_global_list_lock);
+ n = from ? from->global_list.next : rio_devices.next;
+
+ while (n && (n != &rio_devices)) {
+ rdev = rio_dev_g(n);
+ if (rdev->comp_tag == comp_tag)
+ goto exit;
+ n = n->next;
+ }
+ rdev = NULL;
+exit:
+ spin_unlock(&rio_global_list_lock);
+ return rdev;
+}
+
+/**
+ * rio_set_port_lockout - Sets/clears LOCKOUT bit (RIO EM 1.3) for a switch port.
+ * @rdev: Pointer to RIO device control structure
+ * @pnum: Switch port number to set LOCKOUT bit
+ * @lock: Operation : set (=1) or clear (=0)
+ */
+int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock)
+{
+ u32 regval;
+
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
+ &regval);
+ if (lock)
+ regval |= RIO_PORT_N_CTL_LOCKOUT;
+ else
+ regval &= ~RIO_PORT_N_CTL_LOCKOUT;
+
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(pnum),
+ regval);
+ return 0;
+}
+
+/**
+ * rio_chk_dev_route - Validate route to the specified device.
+ * @rdev: RIO device failed to respond
+ * @nrdev: Last active device on the route to rdev
+ * @npnum: nrdev's port number on the route to rdev
+ *
+ * Follows a route to the specified RIO device to determine the last available
+ * device (and corresponding RIO port) on the route.
+ */
+static int
+rio_chk_dev_route(struct rio_dev *rdev, struct rio_dev **nrdev, int *npnum)
+{
+ u32 result;
+ int p_port, rc = -EIO;
+ struct rio_dev *prev = NULL;
+
+ /* Find switch with failed RIO link */
+ while (rdev->prev && (rdev->prev->pef & RIO_PEF_SWITCH)) {
+ if (!rio_read_config_32(rdev->prev, RIO_DEV_ID_CAR, &result)) {
+ prev = rdev->prev;
+ break;
+ }
+ rdev = rdev->prev;
+ }
+
+ if (prev == NULL)
+ goto err_out;
+
+ p_port = prev->rswitch->route_table[rdev->destid];
+
+ if (p_port != RIO_INVALID_ROUTE) {
+ pr_debug("RIO: link failed on [%s]-P%d\n",
+ rio_name(prev), p_port);
+ *nrdev = prev;
+ *npnum = p_port;
+ rc = 0;
+ } else
+ pr_debug("RIO: failed to trace route to %s\n", rio_name(rdev));
+err_out:
+ return rc;
+}
+
+/**
+ * rio_mport_chk_dev_access - Validate access to the specified device.
+ * @mport: Master port to send transactions
+ * @destid: Device destination ID in network
+ * @hopcount: Number of hops into the network
+ */
+int
+rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid, u8 hopcount)
+{
+ int i = 0;
+ u32 tmp;
+
+ while (rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_DEV_ID_CAR, &tmp)) {
+ i++;
+ if (i == RIO_MAX_CHK_RETRY)
+ return -EIO;
+ mdelay(1);
+ }
+
+ return 0;
+}
+
+/**
+ * rio_chk_dev_access - Validate access to the specified device.
+ * @rdev: Pointer to RIO device control structure
+ */
+static int rio_chk_dev_access(struct rio_dev *rdev)
+{
+ return rio_mport_chk_dev_access(rdev->net->hport,
+ rdev->destid, rdev->hopcount);
+}
+
+/**
+ * rio_get_input_status - Sends a Link-Request/Input-Status control symbol and
+ * returns link-response (if requested).
+ * @rdev: RIO devive to issue Input-status command
+ * @pnum: Device port number to issue the command
+ * @lnkresp: Response from a link partner
+ */
+static int
+rio_get_input_status(struct rio_dev *rdev, int pnum, u32 *lnkresp)
+{
+ u32 regval;
+ int checkcount;
+
+ if (lnkresp) {
+ /* Read from link maintenance response register
+ * to clear valid bit */
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
+ &regval);
+ udelay(50);
+ }
+
+ /* Issue Input-status command */
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_MNT_REQ_CSR(pnum),
+ RIO_MNT_REQ_CMD_IS);
+
+ /* Exit if the response is not expected */
+ if (lnkresp == NULL)
+ return 0;
+
+ checkcount = 3;
+ while (checkcount--) {
+ udelay(50);
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(pnum),
+ &regval);
+ if (regval & RIO_PORT_N_MNT_RSP_RVAL) {
+ *lnkresp = regval;
+ return 0;
+ }
+ }
+
+ return -EIO;
+}
+
+/**
+ * rio_clr_err_stopped - Clears port Error-stopped states.
+ * @rdev: Pointer to RIO device control structure
+ * @pnum: Switch port number to clear errors
+ * @err_status: port error status (if 0 reads register from device)
+ */
+static int rio_clr_err_stopped(struct rio_dev *rdev, u32 pnum, u32 err_status)
+{
+ struct rio_dev *nextdev = rdev->rswitch->nextdev[pnum];
+ u32 regval;
+ u32 far_ackid, far_linkstat, near_ackid;
+
+ if (err_status == 0)
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
+ &err_status);
+
+ if (err_status & RIO_PORT_N_ERR_STS_PW_OUT_ES) {
+ pr_debug("RIO_EM: servicing Output Error-Stopped state\n");
+ /*
+ * Send a Link-Request/Input-Status control symbol
+ */
+ if (rio_get_input_status(rdev, pnum, &regval)) {
+ pr_debug("RIO_EM: Input-status response timeout\n");
+ goto rd_err;
+ }
+
+ pr_debug("RIO_EM: SP%d Input-status response=0x%08x\n",
+ pnum, regval);
+ far_ackid = (regval & RIO_PORT_N_MNT_RSP_ASTAT) >> 5;
+ far_linkstat = regval & RIO_PORT_N_MNT_RSP_LSTAT;
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
+ &regval);
+ pr_debug("RIO_EM: SP%d_ACK_STS_CSR=0x%08x\n", pnum, regval);
+ near_ackid = (regval & RIO_PORT_N_ACK_INBOUND) >> 24;
+ pr_debug("RIO_EM: SP%d far_ackID=0x%02x far_linkstat=0x%02x" \
+ " near_ackID=0x%02x\n",
+ pnum, far_ackid, far_linkstat, near_ackid);
+
+ /*
+ * If required, synchronize ackIDs of near and
+ * far sides.
+ */
+ if ((far_ackid != ((regval & RIO_PORT_N_ACK_OUTSTAND) >> 8)) ||
+ (far_ackid != (regval & RIO_PORT_N_ACK_OUTBOUND))) {
+ /* Align near outstanding/outbound ackIDs with
+ * far inbound.
+ */
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ACK_STS_CSR(pnum),
+ (near_ackid << 24) |
+ (far_ackid << 8) | far_ackid);
+ /* Align far outstanding/outbound ackIDs with
+ * near inbound.
+ */
+ far_ackid++;
+ if (nextdev)
+ rio_write_config_32(nextdev,
+ nextdev->phys_efptr +
+ RIO_PORT_N_ACK_STS_CSR(RIO_GET_PORT_NUM(nextdev->swpinfo)),
+ (far_ackid << 24) |
+ (near_ackid << 8) | near_ackid);
+ else
+ pr_debug("RIO_EM: Invalid nextdev pointer (NULL)\n");
+ }
+rd_err:
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
+ &err_status);
+ pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
+ }
+
+ if ((err_status & RIO_PORT_N_ERR_STS_PW_INP_ES) && nextdev) {
+ pr_debug("RIO_EM: servicing Input Error-Stopped state\n");
+ rio_get_input_status(nextdev,
+ RIO_GET_PORT_NUM(nextdev->swpinfo), NULL);
+ udelay(50);
+
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(pnum),
+ &err_status);
+ pr_debug("RIO_EM: SP%d_ERR_STS_CSR=0x%08x\n", pnum, err_status);
+ }
+
+ return (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
+ RIO_PORT_N_ERR_STS_PW_INP_ES)) ? 1 : 0;
+}
+
+/**
+ * rio_inb_pwrite_handler - process inbound port-write message
+ * @pw_msg: pointer to inbound port-write message
+ *
+ * Processes an inbound port-write message. Returns 0 if the request
+ * has been satisfied.
+ */
+int rio_inb_pwrite_handler(union rio_pw_msg *pw_msg)
+{
+ struct rio_dev *rdev;
+ u32 err_status, em_perrdet, em_ltlerrdet;
+ int rc, portnum;
+
+ rdev = rio_get_comptag((pw_msg->em.comptag & RIO_CTAG_UDEVID), NULL);
+ if (rdev == NULL) {
+ /* Device removed or enumeration error */
+ pr_debug("RIO: %s No matching device for CTag 0x%08x\n",
+ __func__, pw_msg->em.comptag);
+ return -EIO;
+ }
+
+ pr_debug("RIO: Port-Write message from %s\n", rio_name(rdev));
+
+#ifdef DEBUG_PW
+ {
+ u32 i;
+ for (i = 0; i < RIO_PW_MSG_SIZE/sizeof(u32);) {
+ pr_debug("0x%02x: %08x %08x %08x %08x\n",
+ i*4, pw_msg->raw[i], pw_msg->raw[i + 1],
+ pw_msg->raw[i + 2], pw_msg->raw[i + 3]);
+ i += 4;
+ }
+ }
+#endif
+
+ /* Call an external service function (if such is registered
+ * for this device). This may be the service for endpoints that send
+ * device-specific port-write messages. End-point messages expected
+ * to be handled completely by EP specific device driver.
+ * For switches rc==0 signals that no standard processing required.
+ */
+ if (rdev->pwcback != NULL) {
+ rc = rdev->pwcback(rdev, pw_msg, 0);
+ if (rc == 0)
+ return 0;
+ }
+
+ portnum = pw_msg->em.is_port & 0xFF;
+
+ /* Check if device and route to it are functional:
+ * Sometimes devices may send PW message(s) just before being
+ * powered down (or link being lost).
+ */
+ if (rio_chk_dev_access(rdev)) {
+ pr_debug("RIO: device access failed - get link partner\n");
+ /* Scan route to the device and identify failed link.
+ * This will replace device and port reported in PW message.
+ * PW message should not be used after this point.
+ */
+ if (rio_chk_dev_route(rdev, &rdev, &portnum)) {
+ pr_err("RIO: Route trace for %s failed\n",
+ rio_name(rdev));
+ return -EIO;
+ }
+ pw_msg = NULL;
+ }
+
+ /* For End-point devices processing stops here */
+ if (!(rdev->pef & RIO_PEF_SWITCH))
+ return 0;
+
+ if (rdev->phys_efptr == 0) {
+ pr_err("RIO_PW: Bad switch initialization for %s\n",
+ rio_name(rdev));
+ return 0;
+ }
+
+ /*
+ * Process the port-write notification from switch
+ */
+ if (rdev->rswitch->em_handle)
+ rdev->rswitch->em_handle(rdev, portnum);
+
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
+ &err_status);
+ pr_debug("RIO_PW: SP%d_ERR_STS_CSR=0x%08x\n", portnum, err_status);
+
+ if (err_status & RIO_PORT_N_ERR_STS_PORT_OK) {
+
+ if (!(rdev->rswitch->port_ok & (1 << portnum))) {
+ rdev->rswitch->port_ok |= (1 << portnum);
+ rio_set_port_lockout(rdev, portnum, 0);
+ /* Schedule Insertion Service */
+ pr_debug("RIO_PW: Device Insertion on [%s]-P%d\n",
+ rio_name(rdev), portnum);
+ }
+
+ /* Clear error-stopped states (if reported).
+ * Depending on the link partner state, two attempts
+ * may be needed for successful recovery.
+ */
+ if (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
+ RIO_PORT_N_ERR_STS_PW_INP_ES)) {
+ if (rio_clr_err_stopped(rdev, portnum, err_status))
+ rio_clr_err_stopped(rdev, portnum, 0);
+ }
+ } else { /* if (err_status & RIO_PORT_N_ERR_STS_PORT_UNINIT) */
+
+ if (rdev->rswitch->port_ok & (1 << portnum)) {
+ rdev->rswitch->port_ok &= ~(1 << portnum);
+ rio_set_port_lockout(rdev, portnum, 1);
+
+ rio_write_config_32(rdev,
+ rdev->phys_efptr +
+ RIO_PORT_N_ACK_STS_CSR(portnum),
+ RIO_PORT_N_ACK_CLEAR);
+
+ /* Schedule Extraction Service */
+ pr_debug("RIO_PW: Device Extraction on [%s]-P%d\n",
+ rio_name(rdev), portnum);
+ }
+ }
+
+ rio_read_config_32(rdev,
+ rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), &em_perrdet);
+ if (em_perrdet) {
+ pr_debug("RIO_PW: RIO_EM_P%d_ERR_DETECT=0x%08x\n",
+ portnum, em_perrdet);
+ /* Clear EM Port N Error Detect CSR */
+ rio_write_config_32(rdev,
+ rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), 0);
+ }
+
+ rio_read_config_32(rdev,
+ rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, &em_ltlerrdet);
+ if (em_ltlerrdet) {
+ pr_debug("RIO_PW: RIO_EM_LTL_ERR_DETECT=0x%08x\n",
+ em_ltlerrdet);
+ /* Clear EM L/T Layer Error Detect CSR */
+ rio_write_config_32(rdev,
+ rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, 0);
+ }
+
+ /* Clear remaining error bits and Port-Write Pending bit */
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
+ err_status);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(rio_inb_pwrite_handler);
+
+/**
+ * rio_mport_get_efb - get pointer to next extended features block
+ * @port: Master port to issue transaction
+ * @local: Indicate a local master port or remote device access
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @from: Offset of current Extended Feature block header (if 0 starts
+ * from ExtFeaturePtr)
+ */
+u32
+rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
+ u8 hopcount, u32 from)
+{
+ u32 reg_val;
+
+ if (from == 0) {
+ if (local)
+ rio_local_read_config_32(port, RIO_ASM_INFO_CAR,
+ &reg_val);
+ else
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_ASM_INFO_CAR, &reg_val);
+ return reg_val & RIO_EXT_FTR_PTR_MASK;
+ } else {
+ if (local)
+ rio_local_read_config_32(port, from, &reg_val);
+ else
+ rio_mport_read_config_32(port, destid, hopcount,
+ from, &reg_val);
+ return RIO_GET_BLOCK_ID(reg_val);
+ }
+}
+
+/**
+ * rio_mport_get_feature - query for devices' extended features
+ * @port: Master port to issue transaction
+ * @local: Indicate a local master port or remote device access
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @ftr: Extended feature code
+ *
+ * Tell if a device supports a given RapidIO capability.
+ * Returns the offset of the requested extended feature
+ * block within the device's RIO configuration space or
+ * 0 in case the device does not support it. Possible
+ * values for @ftr:
+ *
+ * %RIO_EFB_PAR_EP_ID LP/LVDS EP Devices
+ *
+ * %RIO_EFB_PAR_EP_REC_ID LP/LVDS EP Recovery Devices
+ *
+ * %RIO_EFB_PAR_EP_FREE_ID LP/LVDS EP Free Devices
+ *
+ * %RIO_EFB_SER_EP_ID LP/Serial EP Devices
+ *
+ * %RIO_EFB_SER_EP_REC_ID LP/Serial EP Recovery Devices
+ *
+ * %RIO_EFB_SER_EP_FREE_ID LP/Serial EP Free Devices
+ */
+u32
+rio_mport_get_feature(struct rio_mport * port, int local, u16 destid,
+ u8 hopcount, int ftr)
+{
+ u32 asm_info, ext_ftr_ptr, ftr_header;
+
+ if (local)
+ rio_local_read_config_32(port, RIO_ASM_INFO_CAR, &asm_info);
+ else
+ rio_mport_read_config_32(port, destid, hopcount,
+ RIO_ASM_INFO_CAR, &asm_info);
+
+ ext_ftr_ptr = asm_info & RIO_EXT_FTR_PTR_MASK;
+
+ while (ext_ftr_ptr) {
+ if (local)
+ rio_local_read_config_32(port, ext_ftr_ptr,
+ &ftr_header);
+ else
+ rio_mport_read_config_32(port, destid, hopcount,
+ ext_ftr_ptr, &ftr_header);
+ if (RIO_GET_BLOCK_ID(ftr_header) == ftr)
+ return ext_ftr_ptr;
+ if (!(ext_ftr_ptr = RIO_GET_BLOCK_PTR(ftr_header)))
+ break;
+ }
+
+ return 0;
+}
+
+/**
+ * rio_get_asm - Begin or continue searching for a RIO device by vid/did/asm_vid/asm_did
+ * @vid: RIO vid to match or %RIO_ANY_ID to match all vids
+ * @did: RIO did to match or %RIO_ANY_ID to match all dids
+ * @asm_vid: RIO asm_vid to match or %RIO_ANY_ID to match all asm_vids
+ * @asm_did: RIO asm_did to match or %RIO_ANY_ID to match all asm_dids
+ * @from: Previous RIO device found in search, or %NULL for new search
+ *
+ * Iterates through the list of known RIO devices. If a RIO device is
+ * found with a matching @vid, @did, @asm_vid, @asm_did, the reference
+ * count to the device is incrememted and a pointer to its device
+ * structure is returned. Otherwise, %NULL is returned. A new search
+ * is initiated by passing %NULL to the @from argument. Otherwise, if
+ * @from is not %NULL, searches continue from next device on the global
+ * list. The reference count for @from is always decremented if it is
+ * not %NULL.
+ */
+struct rio_dev *rio_get_asm(u16 vid, u16 did,
+ u16 asm_vid, u16 asm_did, struct rio_dev *from)
+{
+ struct list_head *n;
+ struct rio_dev *rdev;
+
+ WARN_ON(in_interrupt());
+ spin_lock(&rio_global_list_lock);
+ n = from ? from->global_list.next : rio_devices.next;
+
+ while (n && (n != &rio_devices)) {
+ rdev = rio_dev_g(n);
+ if ((vid == RIO_ANY_ID || rdev->vid == vid) &&
+ (did == RIO_ANY_ID || rdev->did == did) &&
+ (asm_vid == RIO_ANY_ID || rdev->asm_vid == asm_vid) &&
+ (asm_did == RIO_ANY_ID || rdev->asm_did == asm_did))
+ goto exit;
+ n = n->next;
+ }
+ rdev = NULL;
+ exit:
+ rio_dev_put(from);
+ rdev = rio_dev_get(rdev);
+ spin_unlock(&rio_global_list_lock);
+ return rdev;
+}
+
+/**
+ * rio_get_device - Begin or continue searching for a RIO device by vid/did
+ * @vid: RIO vid to match or %RIO_ANY_ID to match all vids
+ * @did: RIO did to match or %RIO_ANY_ID to match all dids
+ * @from: Previous RIO device found in search, or %NULL for new search
+ *
+ * Iterates through the list of known RIO devices. If a RIO device is
+ * found with a matching @vid and @did, the reference count to the
+ * device is incrememted and a pointer to its device structure is returned.
+ * Otherwise, %NULL is returned. A new search is initiated by passing %NULL
+ * to the @from argument. Otherwise, if @from is not %NULL, searches
+ * continue from next device on the global list. The reference count for
+ * @from is always decremented if it is not %NULL.
+ */
+struct rio_dev *rio_get_device(u16 vid, u16 did, struct rio_dev *from)
+{
+ return rio_get_asm(vid, did, RIO_ANY_ID, RIO_ANY_ID, from);
+}
+
+/**
+ * rio_std_route_add_entry - Add switch route table entry using standard
+ * registers defined in RIO specification rev.1.3
+ * @mport: Master port to issue transaction
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @table: routing table ID (global or port-specific)
+ * @route_destid: destID entry in the RT
+ * @route_port: destination port for specified destID
+ */
+int rio_std_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port)
+{
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR,
+ (u32)route_destid);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR,
+ (u32)route_port);
+ }
+
+ udelay(10);
+ return 0;
+}
+
+/**
+ * rio_std_route_get_entry - Read switch route table entry (port number)
+ * associated with specified destID using standard registers defined in RIO
+ * specification rev.1.3
+ * @mport: Master port to issue transaction
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @table: routing table ID (global or port-specific)
+ * @route_destid: destID entry in the RT
+ * @route_port: returned destination port for specified destID
+ */
+int rio_std_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 *route_port)
+{
+ u32 result;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
+ rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+
+ *route_port = (u8)result;
+ }
+
+ return 0;
+}
+
+/**
+ * rio_std_route_clr_table - Clear swotch route table using standard registers
+ * defined in RIO specification rev.1.3.
+ * @mport: Master port to issue transaction
+ * @destid: Destination ID of the device
+ * @hopcount: Number of switch hops to the device
+ * @table: routing table ID (global or port-specific)
+ */
+int rio_std_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table)
+{
+ u32 max_destid = 0xff;
+ u32 i, pef, id_inc = 1, ext_cfg = 0;
+ u32 port_sel = RIO_INVALID_ROUTE;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_PEF_CAR, &pef);
+
+ if (mport->sys_size) {
+ rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_SWITCH_RT_LIMIT,
+ &max_destid);
+ max_destid &= RIO_RT_MAX_DESTID;
+ }
+
+ if (pef & RIO_PEF_EXT_RT) {
+ ext_cfg = 0x80000000;
+ id_inc = 4;
+ port_sel = (RIO_INVALID_ROUTE << 24) |
+ (RIO_INVALID_ROUTE << 16) |
+ (RIO_INVALID_ROUTE << 8) |
+ RIO_INVALID_ROUTE;
+ }
+
+ for (i = 0; i <= max_destid;) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR,
+ ext_cfg | i);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR,
+ port_sel);
+ i += id_inc;
+ }
+ }
+
+ udelay(10);
+ return 0;
+}
+
+static void rio_fixup_device(struct rio_dev *dev)
+{
+}
+
+static int __devinit rio_init(void)
+{
+ struct rio_dev *dev = NULL;
+
+ while ((dev = rio_get_device(RIO_ANY_ID, RIO_ANY_ID, dev)) != NULL) {
+ rio_fixup_device(dev);
+ }
+ return 0;
+}
+
+int __devinit rio_init_mports(void)
+{
+ struct rio_mport *port;
+
+ list_for_each_entry(port, &rio_mports, node) {
+ if (port->host_deviceid >= 0)
+ rio_enum_mport(port);
+ else
+ rio_disc_mport(port);
+ }
+
+ rio_init();
+
+ return 0;
+}
+
+device_initcall_sync(rio_init_mports);
+
+static int hdids[RIO_MAX_MPORTS + 1];
+
+static int rio_get_hdid(int index)
+{
+ if (!hdids[0] || hdids[0] <= index || index >= RIO_MAX_MPORTS)
+ return -1;
+
+ return hdids[index + 1];
+}
+
+static int rio_hdid_setup(char *str)
+{
+ (void)get_options(str, ARRAY_SIZE(hdids), hdids);
+ return 1;
+}
+
+__setup("riohdid=", rio_hdid_setup);
+
+int rio_register_mport(struct rio_mport *port)
+{
+ if (next_portid >= RIO_MAX_MPORTS) {
+ pr_err("RIO: reached specified max number of mports\n");
+ return 1;
+ }
+
+ port->id = next_portid++;
+ port->host_deviceid = rio_get_hdid(port->id);
+ list_add_tail(&port->node, &rio_mports);
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(rio_local_get_device_id);
+EXPORT_SYMBOL_GPL(rio_get_device);
+EXPORT_SYMBOL_GPL(rio_get_asm);
+EXPORT_SYMBOL_GPL(rio_request_inb_dbell);
+EXPORT_SYMBOL_GPL(rio_release_inb_dbell);
+EXPORT_SYMBOL_GPL(rio_request_outb_dbell);
+EXPORT_SYMBOL_GPL(rio_release_outb_dbell);
+EXPORT_SYMBOL_GPL(rio_request_inb_mbox);
+EXPORT_SYMBOL_GPL(rio_release_inb_mbox);
+EXPORT_SYMBOL_GPL(rio_request_outb_mbox);
+EXPORT_SYMBOL_GPL(rio_release_outb_mbox);
diff --git a/drivers/rapidio/rio.h b/drivers/rapidio/rio.h
new file mode 100644
index 00000000..b1af414f
--- /dev/null
+++ b/drivers/rapidio/rio.h
@@ -0,0 +1,72 @@
+/*
+ * RapidIO interconnect services
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/rio.h>
+
+#define RIO_MAX_CHK_RETRY 3
+
+/* Functions internal to the RIO core code */
+
+extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,
+ u8 hopcount, int ftr);
+extern u32 rio_mport_get_physefb(struct rio_mport *port, int local,
+ u16 destid, u8 hopcount);
+extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
+ u8 hopcount, u32 from);
+extern int rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid,
+ u8 hopcount);
+extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
+extern int rio_enum_mport(struct rio_mport *mport);
+extern int rio_disc_mport(struct rio_mport *mport);
+extern int rio_std_route_add_entry(struct rio_mport *mport, u16 destid,
+ u8 hopcount, u16 table, u16 route_destid,
+ u8 route_port);
+extern int rio_std_route_get_entry(struct rio_mport *mport, u16 destid,
+ u8 hopcount, u16 table, u16 route_destid,
+ u8 *route_port);
+extern int rio_std_route_clr_table(struct rio_mport *mport, u16 destid,
+ u8 hopcount, u16 table);
+extern int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock);
+extern struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from);
+
+/* Structures internal to the RIO core code */
+extern struct device_attribute rio_dev_attrs[];
+extern spinlock_t rio_global_list_lock;
+
+extern struct rio_switch_ops __start_rio_switch_ops[];
+extern struct rio_switch_ops __end_rio_switch_ops[];
+
+/* Helpers internal to the RIO core code */
+#define DECLARE_RIO_SWITCH_SECTION(section, name, vid, did, init_hook) \
+ static const struct rio_switch_ops __rio_switch_##name __used \
+ __section(section) = { vid, did, init_hook };
+
+/**
+ * DECLARE_RIO_SWITCH_INIT - Registers switch initialization routine
+ * @vid: RIO vendor ID
+ * @did: RIO device ID
+ * @init_hook: Callback that performs switch-specific initialization
+ *
+ * Manipulating switch route tables and error management in RIO
+ * is switch specific. This registers a switch by vendor and device ID with
+ * initialization callback for setting up switch operations and (if required)
+ * hardware initialization. A &struct rio_switch_ops is initialized with
+ * pointer to the init routine and placed into a RIO-specific kernel section.
+ */
+#define DECLARE_RIO_SWITCH_INIT(vid, did, init_hook) \
+ DECLARE_RIO_SWITCH_SECTION(.rio_switch_ops, vid##did, \
+ vid, did, init_hook)
+
+#define RIO_GET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x00ff0000) >> 16))
+#define RIO_SET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x000000ff) << 16))
diff --git a/drivers/rapidio/switches/Kconfig b/drivers/rapidio/switches/Kconfig
new file mode 100644
index 00000000..f47fee5d
--- /dev/null
+++ b/drivers/rapidio/switches/Kconfig
@@ -0,0 +1,35 @@
+#
+# RapidIO switches configuration
+#
+config RAPIDIO_TSI57X
+ bool "IDT Tsi57x SRIO switches support"
+ depends on RAPIDIO
+ ---help---
+ Includes support for IDT Tsi57x family of serial RapidIO switches.
+
+config RAPIDIO_CPS_XX
+ bool "IDT CPS-xx SRIO switches support"
+ depends on RAPIDIO
+ ---help---
+ Includes support for IDT CPS-16/12/10/8 serial RapidIO switches.
+
+config RAPIDIO_TSI568
+ bool "Tsi568 SRIO switch support"
+ depends on RAPIDIO
+ default n
+ ---help---
+ Includes support for IDT Tsi568 serial RapidIO switch.
+
+config RAPIDIO_CPS_GEN2
+ bool "IDT CPS Gen.2 SRIO switch support"
+ depends on RAPIDIO
+ default n
+ ---help---
+ Includes support for ITD CPS Gen.2 serial RapidIO switches.
+
+config RAPIDIO_TSI500
+ bool "Tsi500 Parallel RapidIO switch support"
+ depends on RAPIDIO
+ default n
+ ---help---
+ Includes support for IDT Tsi500 parallel RapidIO switch.
diff --git a/drivers/rapidio/switches/Makefile b/drivers/rapidio/switches/Makefile
new file mode 100644
index 00000000..c4d3acc3
--- /dev/null
+++ b/drivers/rapidio/switches/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for RIO switches
+#
+
+obj-$(CONFIG_RAPIDIO_TSI57X) += tsi57x.o
+obj-$(CONFIG_RAPIDIO_CPS_XX) += idtcps.o
+obj-$(CONFIG_RAPIDIO_TSI568) += tsi568.o
+obj-$(CONFIG_RAPIDIO_TSI500) += tsi500.o
+obj-$(CONFIG_RAPIDIO_CPS_GEN2) += idt_gen2.o
diff --git a/drivers/rapidio/switches/idt_gen2.c b/drivers/rapidio/switches/idt_gen2.c
new file mode 100644
index 00000000..809b7a33
--- /dev/null
+++ b/drivers/rapidio/switches/idt_gen2.c
@@ -0,0 +1,431 @@
+/*
+ * IDT CPS Gen.2 Serial RapidIO switch family support
+ *
+ * Copyright 2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/stat.h>
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/delay.h>
+#include "../rio.h"
+
+#define LOCAL_RTE_CONF_DESTID_SEL 0x010070
+#define LOCAL_RTE_CONF_DESTID_SEL_PSEL 0x0000001f
+
+#define IDT_LT_ERR_REPORT_EN 0x03100c
+
+#define IDT_PORT_ERR_REPORT_EN(n) (0x031044 + (n)*0x40)
+#define IDT_PORT_ERR_REPORT_EN_BC 0x03ff04
+
+#define IDT_PORT_ISERR_REPORT_EN(n) (0x03104C + (n)*0x40)
+#define IDT_PORT_ISERR_REPORT_EN_BC 0x03ff0c
+#define IDT_PORT_INIT_TX_ACQUIRED 0x00000020
+
+#define IDT_LANE_ERR_REPORT_EN(n) (0x038010 + (n)*0x100)
+#define IDT_LANE_ERR_REPORT_EN_BC 0x03ff10
+
+#define IDT_DEV_CTRL_1 0xf2000c
+#define IDT_DEV_CTRL_1_GENPW 0x02000000
+#define IDT_DEV_CTRL_1_PRSTBEH 0x00000001
+
+#define IDT_CFGBLK_ERR_CAPTURE_EN 0x020008
+#define IDT_CFGBLK_ERR_REPORT 0xf20014
+#define IDT_CFGBLK_ERR_REPORT_GENPW 0x00000002
+
+#define IDT_AUX_PORT_ERR_CAP_EN 0x020000
+#define IDT_AUX_ERR_REPORT_EN 0xf20018
+#define IDT_AUX_PORT_ERR_LOG_I2C 0x00000002
+#define IDT_AUX_PORT_ERR_LOG_JTAG 0x00000001
+
+#define IDT_ISLTL_ADDRESS_CAP 0x021014
+
+#define IDT_RIO_DOMAIN 0xf20020
+#define IDT_RIO_DOMAIN_MASK 0x000000ff
+
+#define IDT_PW_INFO_CSR 0xf20024
+
+#define IDT_SOFT_RESET 0xf20040
+#define IDT_SOFT_RESET_REQ 0x00030097
+
+#define IDT_I2C_MCTRL 0xf20050
+#define IDT_I2C_MCTRL_GENPW 0x04000000
+
+#define IDT_JTAG_CTRL 0xf2005c
+#define IDT_JTAG_CTRL_GENPW 0x00000002
+
+#define IDT_LANE_CTRL(n) (0xff8000 + (n)*0x100)
+#define IDT_LANE_CTRL_BC 0xffff00
+#define IDT_LANE_CTRL_GENPW 0x00200000
+#define IDT_LANE_DFE_1_BC 0xffff18
+#define IDT_LANE_DFE_2_BC 0xffff1c
+
+#define IDT_PORT_OPS(n) (0xf40004 + (n)*0x100)
+#define IDT_PORT_OPS_GENPW 0x08000000
+#define IDT_PORT_OPS_PL_ELOG 0x00000040
+#define IDT_PORT_OPS_LL_ELOG 0x00000020
+#define IDT_PORT_OPS_LT_ELOG 0x00000010
+#define IDT_PORT_OPS_BC 0xf4ff04
+
+#define IDT_PORT_ISERR_DET(n) (0xf40008 + (n)*0x100)
+
+#define IDT_ERR_CAP 0xfd0000
+#define IDT_ERR_CAP_LOG_OVERWR 0x00000004
+
+#define IDT_ERR_RD 0xfd0004
+
+#define IDT_DEFAULT_ROUTE 0xde
+#define IDT_NO_ROUTE 0xdf
+
+static int
+idtg2_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port)
+{
+ /*
+ * Select routing table to update
+ */
+ if (table == RIO_GLOBAL_TABLE)
+ table = 0;
+ else
+ table++;
+
+ if (route_port == RIO_INVALID_ROUTE)
+ route_port = IDT_DEFAULT_ROUTE;
+
+ rio_mport_write_config_32(mport, destid, hopcount,
+ LOCAL_RTE_CONF_DESTID_SEL, table);
+
+ /*
+ * Program destination port for the specified destID
+ */
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR,
+ (u32)route_destid);
+
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR,
+ (u32)route_port);
+ udelay(10);
+
+ return 0;
+}
+
+static int
+idtg2_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 *route_port)
+{
+ u32 result;
+
+ /*
+ * Select routing table to read
+ */
+ if (table == RIO_GLOBAL_TABLE)
+ table = 0;
+ else
+ table++;
+
+ rio_mport_write_config_32(mport, destid, hopcount,
+ LOCAL_RTE_CONF_DESTID_SEL, table);
+
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR,
+ route_destid);
+
+ rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+
+ if (IDT_DEFAULT_ROUTE == (u8)result || IDT_NO_ROUTE == (u8)result)
+ *route_port = RIO_INVALID_ROUTE;
+ else
+ *route_port = (u8)result;
+
+ return 0;
+}
+
+static int
+idtg2_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table)
+{
+ u32 i;
+
+ /*
+ * Select routing table to read
+ */
+ if (table == RIO_GLOBAL_TABLE)
+ table = 0;
+ else
+ table++;
+
+ rio_mport_write_config_32(mport, destid, hopcount,
+ LOCAL_RTE_CONF_DESTID_SEL, table);
+
+ for (i = RIO_STD_RTE_CONF_EXTCFGEN;
+ i <= (RIO_STD_RTE_CONF_EXTCFGEN | 0xff);) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR, i);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR,
+ (IDT_DEFAULT_ROUTE << 24) | (IDT_DEFAULT_ROUTE << 16) |
+ (IDT_DEFAULT_ROUTE << 8) | IDT_DEFAULT_ROUTE);
+ i += 4;
+ }
+
+ return 0;
+}
+
+
+static int
+idtg2_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u8 sw_domain)
+{
+ /*
+ * Switch domain configuration operates only at global level
+ */
+ rio_mport_write_config_32(mport, destid, hopcount,
+ IDT_RIO_DOMAIN, (u32)sw_domain);
+ return 0;
+}
+
+static int
+idtg2_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u8 *sw_domain)
+{
+ u32 regval;
+
+ /*
+ * Switch domain configuration operates only at global level
+ */
+ rio_mport_read_config_32(mport, destid, hopcount,
+ IDT_RIO_DOMAIN, &regval);
+
+ *sw_domain = (u8)(regval & 0xff);
+
+ return 0;
+}
+
+static int
+idtg2_em_init(struct rio_dev *rdev)
+{
+ u32 regval;
+ int i, tmp;
+
+ /*
+ * This routine performs device-specific initialization only.
+ * All standard EM configuration should be performed at upper level.
+ */
+
+ pr_debug("RIO: %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount);
+
+ /* Set Port-Write info CSR: PRIO=3 and CRF=1 */
+ rio_write_config_32(rdev, IDT_PW_INFO_CSR, 0x0000e000);
+
+ /*
+ * Configure LT LAYER error reporting.
+ */
+
+ /* Enable standard (RIO.p8) error reporting */
+ rio_write_config_32(rdev, IDT_LT_ERR_REPORT_EN,
+ REM_LTL_ERR_ILLTRAN | REM_LTL_ERR_UNSOLR |
+ REM_LTL_ERR_UNSUPTR);
+
+ /* Use Port-Writes for LT layer error reporting.
+ * Enable per-port reset
+ */
+ rio_read_config_32(rdev, IDT_DEV_CTRL_1, &regval);
+ rio_write_config_32(rdev, IDT_DEV_CTRL_1,
+ regval | IDT_DEV_CTRL_1_GENPW | IDT_DEV_CTRL_1_PRSTBEH);
+
+ /*
+ * Configure PORT error reporting.
+ */
+
+ /* Report all RIO.p8 errors supported by device */
+ rio_write_config_32(rdev, IDT_PORT_ERR_REPORT_EN_BC, 0x807e8037);
+
+ /* Configure reporting of implementation specific errors/events */
+ rio_write_config_32(rdev, IDT_PORT_ISERR_REPORT_EN_BC,
+ IDT_PORT_INIT_TX_ACQUIRED);
+
+ /* Use Port-Writes for port error reporting and enable error logging */
+ tmp = RIO_GET_TOTAL_PORTS(rdev->swpinfo);
+ for (i = 0; i < tmp; i++) {
+ rio_read_config_32(rdev, IDT_PORT_OPS(i), &regval);
+ rio_write_config_32(rdev,
+ IDT_PORT_OPS(i), regval | IDT_PORT_OPS_GENPW |
+ IDT_PORT_OPS_PL_ELOG |
+ IDT_PORT_OPS_LL_ELOG |
+ IDT_PORT_OPS_LT_ELOG);
+ }
+ /* Overwrite error log if full */
+ rio_write_config_32(rdev, IDT_ERR_CAP, IDT_ERR_CAP_LOG_OVERWR);
+
+ /*
+ * Configure LANE error reporting.
+ */
+
+ /* Disable line error reporting */
+ rio_write_config_32(rdev, IDT_LANE_ERR_REPORT_EN_BC, 0);
+
+ /* Use Port-Writes for lane error reporting (when enabled)
+ * (do per-lane update because lanes may have different configuration)
+ */
+ tmp = (rdev->did == RIO_DID_IDTCPS1848) ? 48 : 16;
+ for (i = 0; i < tmp; i++) {
+ rio_read_config_32(rdev, IDT_LANE_CTRL(i), &regval);
+ rio_write_config_32(rdev, IDT_LANE_CTRL(i),
+ regval | IDT_LANE_CTRL_GENPW);
+ }
+
+ /*
+ * Configure AUX error reporting.
+ */
+
+ /* Disable JTAG and I2C Error capture */
+ rio_write_config_32(rdev, IDT_AUX_PORT_ERR_CAP_EN, 0);
+
+ /* Disable JTAG and I2C Error reporting/logging */
+ rio_write_config_32(rdev, IDT_AUX_ERR_REPORT_EN, 0);
+
+ /* Disable Port-Write notification from JTAG */
+ rio_write_config_32(rdev, IDT_JTAG_CTRL, 0);
+
+ /* Disable Port-Write notification from I2C */
+ rio_read_config_32(rdev, IDT_I2C_MCTRL, &regval);
+ rio_write_config_32(rdev, IDT_I2C_MCTRL, regval & ~IDT_I2C_MCTRL_GENPW);
+
+ /*
+ * Configure CFG_BLK error reporting.
+ */
+
+ /* Disable Configuration Block error capture */
+ rio_write_config_32(rdev, IDT_CFGBLK_ERR_CAPTURE_EN, 0);
+
+ /* Disable Port-Writes for Configuration Block error reporting */
+ rio_read_config_32(rdev, IDT_CFGBLK_ERR_REPORT, &regval);
+ rio_write_config_32(rdev, IDT_CFGBLK_ERR_REPORT,
+ regval & ~IDT_CFGBLK_ERR_REPORT_GENPW);
+
+ /* set TVAL = ~50us */
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8);
+
+ return 0;
+}
+
+static int
+idtg2_em_handler(struct rio_dev *rdev, u8 portnum)
+{
+ u32 regval, em_perrdet, em_ltlerrdet;
+
+ rio_read_config_32(rdev,
+ rdev->em_efptr + RIO_EM_LTL_ERR_DETECT, &em_ltlerrdet);
+ if (em_ltlerrdet) {
+ /* Service Logical/Transport Layer Error(s) */
+ if (em_ltlerrdet & REM_LTL_ERR_IMPSPEC) {
+ /* Implementation specific error reported */
+ rio_read_config_32(rdev,
+ IDT_ISLTL_ADDRESS_CAP, &regval);
+
+ pr_debug("RIO: %s Implementation Specific LTL errors" \
+ " 0x%x @(0x%x)\n",
+ rio_name(rdev), em_ltlerrdet, regval);
+
+ /* Clear implementation specific address capture CSR */
+ rio_write_config_32(rdev, IDT_ISLTL_ADDRESS_CAP, 0);
+
+ }
+ }
+
+ rio_read_config_32(rdev,
+ rdev->em_efptr + RIO_EM_PN_ERR_DETECT(portnum), &em_perrdet);
+ if (em_perrdet) {
+ /* Service Port-Level Error(s) */
+ if (em_perrdet & REM_PED_IMPL_SPEC) {
+ /* Implementation Specific port error reported */
+
+ /* Get IS errors reported */
+ rio_read_config_32(rdev,
+ IDT_PORT_ISERR_DET(portnum), &regval);
+
+ pr_debug("RIO: %s Implementation Specific Port" \
+ " errors 0x%x\n", rio_name(rdev), regval);
+
+ /* Clear all implementation specific events */
+ rio_write_config_32(rdev,
+ IDT_PORT_ISERR_DET(portnum), 0);
+ }
+ }
+
+ return 0;
+}
+
+static ssize_t
+idtg2_show_errlog(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct rio_dev *rdev = to_rio_dev(dev);
+ ssize_t len = 0;
+ u32 regval;
+
+ while (!rio_read_config_32(rdev, IDT_ERR_RD, &regval)) {
+ if (!regval) /* 0 = end of log */
+ break;
+ len += snprintf(buf + len, PAGE_SIZE - len,
+ "%08x\n", regval);
+ if (len >= (PAGE_SIZE - 10))
+ break;
+ }
+
+ return len;
+}
+
+static DEVICE_ATTR(errlog, S_IRUGO, idtg2_show_errlog, NULL);
+
+static int idtg2_sysfs(struct rio_dev *rdev, int create)
+{
+ struct device *dev = &rdev->dev;
+ int err = 0;
+
+ if (create == RIO_SW_SYSFS_CREATE) {
+ /* Initialize sysfs entries */
+ err = device_create_file(dev, &dev_attr_errlog);
+ if (err)
+ dev_err(dev, "Unable create sysfs errlog file\n");
+ } else
+ device_remove_file(dev, &dev_attr_errlog);
+
+ return err;
+}
+
+static int idtg2_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ rdev->rswitch->add_entry = idtg2_route_add_entry;
+ rdev->rswitch->get_entry = idtg2_route_get_entry;
+ rdev->rswitch->clr_table = idtg2_route_clr_table;
+ rdev->rswitch->set_domain = idtg2_set_domain;
+ rdev->rswitch->get_domain = idtg2_get_domain;
+ rdev->rswitch->em_init = idtg2_em_init;
+ rdev->rswitch->em_handle = idtg2_em_handler;
+ rdev->rswitch->sw_sysfs = idtg2_sysfs;
+
+ if (do_enum) {
+ /* Ensure that default routing is disabled on startup */
+ rio_write_config_32(rdev,
+ RIO_STD_RTE_DEFAULT_PORT, IDT_NO_ROUTE);
+ }
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1848, idtg2_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1616, idtg2_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTVPS1616, idtg2_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTSPS1616, idtg2_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS1432, idtg2_switch_init);
diff --git a/drivers/rapidio/switches/idtcps.c b/drivers/rapidio/switches/idtcps.c
new file mode 100644
index 00000000..d06ee2d4
--- /dev/null
+++ b/drivers/rapidio/switches/idtcps.c
@@ -0,0 +1,149 @@
+/*
+ * IDT CPS RapidIO switches support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include "../rio.h"
+
+#define CPS_DEFAULT_ROUTE 0xde
+#define CPS_NO_ROUTE 0xdf
+
+#define IDTCPS_RIO_DOMAIN 0xf20020
+
+static int
+idtcps_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port)
+{
+ u32 result;
+
+ if (route_port == RIO_INVALID_ROUTE)
+ route_port = CPS_DEFAULT_ROUTE;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
+
+ rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+
+ result = (0xffffff00 & result) | (u32)route_port;
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR, result);
+ }
+
+ return 0;
+}
+
+static int
+idtcps_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 *route_port)
+{
+ u32 result;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR, route_destid);
+
+ rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR, &result);
+
+ if (CPS_DEFAULT_ROUTE == (u8)result ||
+ CPS_NO_ROUTE == (u8)result)
+ *route_port = RIO_INVALID_ROUTE;
+ else
+ *route_port = (u8)result;
+ }
+
+ return 0;
+}
+
+static int
+idtcps_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table)
+{
+ u32 i;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ for (i = 0x80000000; i <= 0x800000ff;) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_DESTID_SEL_CSR, i);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ RIO_STD_RTE_CONF_PORT_SEL_CSR,
+ (CPS_DEFAULT_ROUTE << 24) |
+ (CPS_DEFAULT_ROUTE << 16) |
+ (CPS_DEFAULT_ROUTE << 8) | CPS_DEFAULT_ROUTE);
+ i += 4;
+ }
+ }
+
+ return 0;
+}
+
+static int
+idtcps_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u8 sw_domain)
+{
+ /*
+ * Switch domain configuration operates only at global level
+ */
+ rio_mport_write_config_32(mport, destid, hopcount,
+ IDTCPS_RIO_DOMAIN, (u32)sw_domain);
+ return 0;
+}
+
+static int
+idtcps_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u8 *sw_domain)
+{
+ u32 regval;
+
+ /*
+ * Switch domain configuration operates only at global level
+ */
+ rio_mport_read_config_32(mport, destid, hopcount,
+ IDTCPS_RIO_DOMAIN, &regval);
+
+ *sw_domain = (u8)(regval & 0xff);
+
+ return 0;
+}
+
+static int idtcps_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ rdev->rswitch->add_entry = idtcps_route_add_entry;
+ rdev->rswitch->get_entry = idtcps_route_get_entry;
+ rdev->rswitch->clr_table = idtcps_route_clr_table;
+ rdev->rswitch->set_domain = idtcps_set_domain;
+ rdev->rswitch->get_domain = idtcps_get_domain;
+ rdev->rswitch->em_init = NULL;
+ rdev->rswitch->em_handle = NULL;
+
+ if (do_enum) {
+ /* set TVAL = ~50us */
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x8e << 8);
+ /* Ensure that default routing is disabled on startup */
+ rio_write_config_32(rdev,
+ RIO_STD_RTE_DEFAULT_PORT, CPS_NO_ROUTE);
+ }
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS6Q, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS8, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS10Q, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS12, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDTCPS16, idtcps_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_IDT, RIO_DID_IDT70K200, idtcps_switch_init);
diff --git a/drivers/rapidio/switches/tsi500.c b/drivers/rapidio/switches/tsi500.c
new file mode 100644
index 00000000..914eddd5
--- /dev/null
+++ b/drivers/rapidio/switches/tsi500.c
@@ -0,0 +1,78 @@
+/*
+ * RapidIO Tsi500 switch support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ * - Modified switch operations initialization.
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include "../rio.h"
+
+static int
+tsi500_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 route_port)
+{
+ int i;
+ u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);
+ u32 result;
+
+ if (table == 0xff) {
+ rio_mport_read_config_32(mport, destid, hopcount, offset, &result);
+ result &= ~(0xf << (4*(route_destid & 0x7)));
+ for (i=0;i<4;i++)
+ rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*i), result | (route_port << (4*(route_destid & 0x7))));
+ }
+ else {
+ rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);
+ result &= ~(0xf << (4*(route_destid & 0x7)));
+ rio_mport_write_config_32(mport, destid, hopcount, offset + (0x20000*table), result | (route_port << (4*(route_destid & 0x7))));
+ }
+
+ return 0;
+}
+
+static int
+tsi500_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount, u16 table, u16 route_destid, u8 *route_port)
+{
+ int ret = 0;
+ u32 offset = 0x10000 + 0xa00 + ((route_destid / 2)&~0x3);
+ u32 result;
+
+ if (table == 0xff)
+ rio_mport_read_config_32(mport, destid, hopcount, offset, &result);
+ else
+ rio_mport_read_config_32(mport, destid, hopcount, offset + (0x20000*table), &result);
+
+ result &= 0xf << (4*(route_destid & 0x7));
+ *route_port = result >> (4*(route_destid & 0x7));
+ if (*route_port > 3)
+ ret = -1;
+
+ return ret;
+}
+
+static int tsi500_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ rdev->rswitch->add_entry = tsi500_route_add_entry;
+ rdev->rswitch->get_entry = tsi500_route_get_entry;
+ rdev->rswitch->clr_table = NULL;
+ rdev->rswitch->set_domain = NULL;
+ rdev->rswitch->get_domain = NULL;
+ rdev->rswitch->em_init = NULL;
+ rdev->rswitch->em_handle = NULL;
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI500, tsi500_switch_init);
diff --git a/drivers/rapidio/switches/tsi568.c b/drivers/rapidio/switches/tsi568.c
new file mode 100644
index 00000000..3994c00a
--- /dev/null
+++ b/drivers/rapidio/switches/tsi568.c
@@ -0,0 +1,146 @@
+/*
+ * RapidIO Tsi568 switch support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ * - Added EM support
+ * - Modified switch operations initialization.
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/delay.h>
+#include "../rio.h"
+
+/* Global (broadcast) route registers */
+#define SPBC_ROUTE_CFG_DESTID 0x10070
+#define SPBC_ROUTE_CFG_PORT 0x10074
+
+/* Per port route registers */
+#define SPP_ROUTE_CFG_DESTID(n) (0x11070 + 0x100*n)
+#define SPP_ROUTE_CFG_PORT(n) (0x11074 + 0x100*n)
+
+#define TSI568_SP_MODE(n) (0x11004 + 0x100*n)
+#define TSI568_SP_MODE_PW_DIS 0x08000000
+
+static int
+tsi568_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port)
+{
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, route_destid);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT, route_port);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table),
+ route_destid);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table), route_port);
+ }
+
+ udelay(10);
+
+ return 0;
+}
+
+static int
+tsi568_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 *route_port)
+{
+ int ret = 0;
+ u32 result;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, route_destid);
+ rio_mport_read_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT, &result);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table),
+ route_destid);
+ rio_mport_read_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table), &result);
+ }
+
+ *route_port = result;
+ if (*route_port > 15)
+ ret = -1;
+
+ return ret;
+}
+
+static int
+tsi568_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table)
+{
+ u32 route_idx;
+ u32 lut_size;
+
+ lut_size = (mport->sys_size) ? 0x1ff : 0xff;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, 0x80000000);
+ for (route_idx = 0; route_idx <= lut_size; route_idx++)
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT,
+ RIO_INVALID_ROUTE);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table),
+ 0x80000000);
+ for (route_idx = 0; route_idx <= lut_size; route_idx++)
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table),
+ RIO_INVALID_ROUTE);
+ }
+
+ return 0;
+}
+
+static int
+tsi568_em_init(struct rio_dev *rdev)
+{
+ u32 regval;
+ int portnum;
+
+ pr_debug("TSI568 %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount);
+
+ /* Make sure that Port-Writes are disabled (for all ports) */
+ for (portnum = 0;
+ portnum < RIO_GET_TOTAL_PORTS(rdev->swpinfo); portnum++) {
+ rio_read_config_32(rdev, TSI568_SP_MODE(portnum), &regval);
+ rio_write_config_32(rdev, TSI568_SP_MODE(portnum),
+ regval | TSI568_SP_MODE_PW_DIS);
+ }
+
+ return 0;
+}
+
+static int tsi568_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ rdev->rswitch->add_entry = tsi568_route_add_entry;
+ rdev->rswitch->get_entry = tsi568_route_get_entry;
+ rdev->rswitch->clr_table = tsi568_route_clr_table;
+ rdev->rswitch->set_domain = NULL;
+ rdev->rswitch->get_domain = NULL;
+ rdev->rswitch->em_init = tsi568_em_init;
+ rdev->rswitch->em_handle = NULL;
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI568, tsi568_switch_init);
diff --git a/drivers/rapidio/switches/tsi57x.c b/drivers/rapidio/switches/tsi57x.c
new file mode 100644
index 00000000..db8b8028
--- /dev/null
+++ b/drivers/rapidio/switches/tsi57x.c
@@ -0,0 +1,318 @@
+/*
+ * RapidIO Tsi57x switch family support
+ *
+ * Copyright 2009-2010 Integrated Device Technology, Inc.
+ * Alexandre Bounine <alexandre.bounine@idt.com>
+ * - Added EM support
+ * - Modified switch operations initialization.
+ *
+ * Copyright 2005 MontaVista Software, Inc.
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/rio.h>
+#include <linux/rio_drv.h>
+#include <linux/rio_ids.h>
+#include <linux/delay.h>
+#include "../rio.h"
+
+/* Global (broadcast) route registers */
+#define SPBC_ROUTE_CFG_DESTID 0x10070
+#define SPBC_ROUTE_CFG_PORT 0x10074
+
+/* Per port route registers */
+#define SPP_ROUTE_CFG_DESTID(n) (0x11070 + 0x100*n)
+#define SPP_ROUTE_CFG_PORT(n) (0x11074 + 0x100*n)
+
+#define TSI578_SP_MODE(n) (0x11004 + n*0x100)
+#define TSI578_SP_MODE_GLBL 0x10004
+#define TSI578_SP_MODE_PW_DIS 0x08000000
+#define TSI578_SP_MODE_LUT_512 0x01000000
+
+#define TSI578_SP_CTL_INDEP(n) (0x13004 + n*0x100)
+#define TSI578_SP_LUT_PEINF(n) (0x13010 + n*0x100)
+#define TSI578_SP_CS_TX(n) (0x13014 + n*0x100)
+#define TSI578_SP_INT_STATUS(n) (0x13018 + n*0x100)
+
+#define TSI578_GLBL_ROUTE_BASE 0x10078
+
+static int
+tsi57x_route_add_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 route_port)
+{
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, route_destid);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT, route_port);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table), route_destid);
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table), route_port);
+ }
+
+ udelay(10);
+
+ return 0;
+}
+
+static int
+tsi57x_route_get_entry(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table, u16 route_destid, u8 *route_port)
+{
+ int ret = 0;
+ u32 result;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ /* Use local RT of the ingress port to avoid possible
+ race condition */
+ rio_mport_read_config_32(mport, destid, hopcount,
+ RIO_SWP_INFO_CAR, &result);
+ table = (result & RIO_SWP_INFO_PORT_NUM_MASK);
+ }
+
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table), route_destid);
+ rio_mport_read_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table), &result);
+
+ *route_port = (u8)result;
+ if (*route_port > 15)
+ ret = -1;
+
+ return ret;
+}
+
+static int
+tsi57x_route_clr_table(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u16 table)
+{
+ u32 route_idx;
+ u32 lut_size;
+
+ lut_size = (mport->sys_size) ? 0x1ff : 0xff;
+
+ if (table == RIO_GLOBAL_TABLE) {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_DESTID, 0x80000000);
+ for (route_idx = 0; route_idx <= lut_size; route_idx++)
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPBC_ROUTE_CFG_PORT,
+ RIO_INVALID_ROUTE);
+ } else {
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_DESTID(table), 0x80000000);
+ for (route_idx = 0; route_idx <= lut_size; route_idx++)
+ rio_mport_write_config_32(mport, destid, hopcount,
+ SPP_ROUTE_CFG_PORT(table) , RIO_INVALID_ROUTE);
+ }
+
+ return 0;
+}
+
+static int
+tsi57x_set_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u8 sw_domain)
+{
+ u32 regval;
+
+ /*
+ * Switch domain configuration operates only at global level
+ */
+
+ /* Turn off flat (LUT_512) mode */
+ rio_mport_read_config_32(mport, destid, hopcount,
+ TSI578_SP_MODE_GLBL, &regval);
+ rio_mport_write_config_32(mport, destid, hopcount, TSI578_SP_MODE_GLBL,
+ regval & ~TSI578_SP_MODE_LUT_512);
+ /* Set switch domain base */
+ rio_mport_write_config_32(mport, destid, hopcount,
+ TSI578_GLBL_ROUTE_BASE,
+ (u32)(sw_domain << 24));
+ return 0;
+}
+
+static int
+tsi57x_get_domain(struct rio_mport *mport, u16 destid, u8 hopcount,
+ u8 *sw_domain)
+{
+ u32 regval;
+
+ /*
+ * Switch domain configuration operates only at global level
+ */
+ rio_mport_read_config_32(mport, destid, hopcount,
+ TSI578_GLBL_ROUTE_BASE, &regval);
+
+ *sw_domain = (u8)(regval >> 24);
+
+ return 0;
+}
+
+static int
+tsi57x_em_init(struct rio_dev *rdev)
+{
+ u32 regval;
+ int portnum;
+
+ pr_debug("TSI578 %s [%d:%d]\n", __func__, rdev->destid, rdev->hopcount);
+
+ for (portnum = 0;
+ portnum < RIO_GET_TOTAL_PORTS(rdev->swpinfo); portnum++) {
+ /* Make sure that Port-Writes are enabled (for all ports) */
+ rio_read_config_32(rdev,
+ TSI578_SP_MODE(portnum), &regval);
+ rio_write_config_32(rdev,
+ TSI578_SP_MODE(portnum),
+ regval & ~TSI578_SP_MODE_PW_DIS);
+
+ /* Clear all pending interrupts */
+ rio_read_config_32(rdev,
+ rdev->phys_efptr +
+ RIO_PORT_N_ERR_STS_CSR(portnum),
+ &regval);
+ rio_write_config_32(rdev,
+ rdev->phys_efptr +
+ RIO_PORT_N_ERR_STS_CSR(portnum),
+ regval & 0x07120214);
+
+ rio_read_config_32(rdev,
+ TSI578_SP_INT_STATUS(portnum), &regval);
+ rio_write_config_32(rdev,
+ TSI578_SP_INT_STATUS(portnum),
+ regval & 0x000700bd);
+
+ /* Enable all interrupts to allow ports to send a port-write */
+ rio_read_config_32(rdev,
+ TSI578_SP_CTL_INDEP(portnum), &regval);
+ rio_write_config_32(rdev,
+ TSI578_SP_CTL_INDEP(portnum),
+ regval | 0x000b0000);
+
+ /* Skip next (odd) port if the current port is in x4 mode */
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+ &regval);
+ if ((regval & RIO_PORT_N_CTL_PWIDTH) == RIO_PORT_N_CTL_PWIDTH_4)
+ portnum++;
+ }
+
+ /* set TVAL = ~50us */
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_LINKTO_CTL_CSR, 0x9a << 8);
+
+ return 0;
+}
+
+static int
+tsi57x_em_handler(struct rio_dev *rdev, u8 portnum)
+{
+ struct rio_mport *mport = rdev->net->hport;
+ u32 intstat, err_status;
+ int sendcount, checkcount;
+ u8 route_port;
+ u32 regval;
+
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_ERR_STS_CSR(portnum),
+ &err_status);
+
+ if ((err_status & RIO_PORT_N_ERR_STS_PORT_OK) &&
+ (err_status & (RIO_PORT_N_ERR_STS_PW_OUT_ES |
+ RIO_PORT_N_ERR_STS_PW_INP_ES))) {
+ /* Remove any queued packets by locking/unlocking port */
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+ &regval);
+ if (!(regval & RIO_PORT_N_CTL_LOCKOUT)) {
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+ regval | RIO_PORT_N_CTL_LOCKOUT);
+ udelay(50);
+ rio_write_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_CTL_CSR(portnum),
+ regval);
+ }
+
+ /* Read from link maintenance response register to clear
+ * valid bit
+ */
+ rio_read_config_32(rdev,
+ rdev->phys_efptr + RIO_PORT_N_MNT_RSP_CSR(portnum),
+ &regval);
+
+ /* Send a Packet-Not-Accepted/Link-Request-Input-Status control
+ * symbol to recover from IES/OES
+ */
+ sendcount = 3;
+ while (sendcount) {
+ rio_write_config_32(rdev,
+ TSI578_SP_CS_TX(portnum), 0x40fc8000);
+ checkcount = 3;
+ while (checkcount--) {
+ udelay(50);
+ rio_read_config_32(rdev,
+ rdev->phys_efptr +
+ RIO_PORT_N_MNT_RSP_CSR(portnum),
+ &regval);
+ if (regval & RIO_PORT_N_MNT_RSP_RVAL)
+ goto exit_es;
+ }
+
+ sendcount--;
+ }
+ }
+
+exit_es:
+ /* Clear implementation specific error status bits */
+ rio_read_config_32(rdev, TSI578_SP_INT_STATUS(portnum), &intstat);
+ pr_debug("TSI578[%x:%x] SP%d_INT_STATUS=0x%08x\n",
+ rdev->destid, rdev->hopcount, portnum, intstat);
+
+ if (intstat & 0x10000) {
+ rio_read_config_32(rdev,
+ TSI578_SP_LUT_PEINF(portnum), &regval);
+ regval = (mport->sys_size) ? (regval >> 16) : (regval >> 24);
+ route_port = rdev->rswitch->route_table[regval];
+ pr_debug("RIO: TSI578[%s] P%d LUT Parity Error (destID=%d)\n",
+ rio_name(rdev), portnum, regval);
+ tsi57x_route_add_entry(mport, rdev->destid, rdev->hopcount,
+ RIO_GLOBAL_TABLE, regval, route_port);
+ }
+
+ rio_write_config_32(rdev, TSI578_SP_INT_STATUS(portnum),
+ intstat & 0x000700bd);
+
+ return 0;
+}
+
+static int tsi57x_switch_init(struct rio_dev *rdev, int do_enum)
+{
+ pr_debug("RIO: %s for %s\n", __func__, rio_name(rdev));
+ rdev->rswitch->add_entry = tsi57x_route_add_entry;
+ rdev->rswitch->get_entry = tsi57x_route_get_entry;
+ rdev->rswitch->clr_table = tsi57x_route_clr_table;
+ rdev->rswitch->set_domain = tsi57x_set_domain;
+ rdev->rswitch->get_domain = tsi57x_get_domain;
+ rdev->rswitch->em_init = tsi57x_em_init;
+ rdev->rswitch->em_handle = tsi57x_em_handler;
+
+ if (do_enum) {
+ /* Ensure that default routing is disabled on startup */
+ rio_write_config_32(rdev, RIO_STD_RTE_DEFAULT_PORT,
+ RIO_INVALID_ROUTE);
+ }
+
+ return 0;
+}
+
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI572, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI574, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI577, tsi57x_switch_init);
+DECLARE_RIO_SWITCH_INIT(RIO_VID_TUNDRA, RIO_DID_TSI578, tsi57x_switch_init);
generated by cgit (git 2.34.1) at 2024-12-20 06:04:10 +0000