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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/powerpc/sysdev/mpic_msgr.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/sysdev/mpic_msgr.c')
-rw-r--r--ANDROID_3.4.5/arch/powerpc/sysdev/mpic_msgr.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/sysdev/mpic_msgr.c b/ANDROID_3.4.5/arch/powerpc/sysdev/mpic_msgr.c
deleted file mode 100644
index 483d8fa7..00000000
--- a/ANDROID_3.4.5/arch/powerpc/sysdev/mpic_msgr.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- * Copyright 2011-2012, Meador Inge, Mentor Graphics Corporation.
- *
- * Some ideas based on un-pushed work done by Vivek Mahajan, Jason Jin, and
- * Mingkai Hu from Freescale Semiconductor, 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; version 2 of the
- * License.
- *
- */
-
-#include <linux/list.h>
-#include <linux/of_platform.h>
-#include <linux/errno.h>
-#include <asm/prom.h>
-#include <asm/hw_irq.h>
-#include <asm/ppc-pci.h>
-#include <asm/mpic_msgr.h>
-
-#define MPIC_MSGR_REGISTERS_PER_BLOCK 4
-#define MPIC_MSGR_STRIDE 0x10
-#define MPIC_MSGR_MER_OFFSET 0x100
-#define MSGR_INUSE 0
-#define MSGR_FREE 1
-
-static struct mpic_msgr **mpic_msgrs;
-static unsigned int mpic_msgr_count;
-static DEFINE_RAW_SPINLOCK(msgrs_lock);
-
-static inline void _mpic_msgr_mer_write(struct mpic_msgr *msgr, u32 value)
-{
- out_be32(msgr->mer, value);
-}
-
-static inline u32 _mpic_msgr_mer_read(struct mpic_msgr *msgr)
-{
- return in_be32(msgr->mer);
-}
-
-static inline void _mpic_msgr_disable(struct mpic_msgr *msgr)
-{
- u32 mer = _mpic_msgr_mer_read(msgr);
-
- _mpic_msgr_mer_write(msgr, mer & ~(1 << msgr->num));
-}
-
-struct mpic_msgr *mpic_msgr_get(unsigned int reg_num)
-{
- unsigned long flags;
- struct mpic_msgr *msgr;
-
- /* Assume busy until proven otherwise. */
- msgr = ERR_PTR(-EBUSY);
-
- if (reg_num >= mpic_msgr_count)
- return ERR_PTR(-ENODEV);
-
- raw_spin_lock_irqsave(&msgrs_lock, flags);
- msgr = mpic_msgrs[reg_num];
- if (msgr->in_use == MSGR_FREE)
- msgr->in_use = MSGR_INUSE;
- raw_spin_unlock_irqrestore(&msgrs_lock, flags);
-
- return msgr;
-}
-EXPORT_SYMBOL_GPL(mpic_msgr_get);
-
-void mpic_msgr_put(struct mpic_msgr *msgr)
-{
- unsigned long flags;
-
- raw_spin_lock_irqsave(&msgr->lock, flags);
- msgr->in_use = MSGR_FREE;
- _mpic_msgr_disable(msgr);
- raw_spin_unlock_irqrestore(&msgr->lock, flags);
-}
-EXPORT_SYMBOL_GPL(mpic_msgr_put);
-
-void mpic_msgr_enable(struct mpic_msgr *msgr)
-{
- unsigned long flags;
- u32 mer;
-
- raw_spin_lock_irqsave(&msgr->lock, flags);
- mer = _mpic_msgr_mer_read(msgr);
- _mpic_msgr_mer_write(msgr, mer | (1 << msgr->num));
- raw_spin_unlock_irqrestore(&msgr->lock, flags);
-}
-EXPORT_SYMBOL_GPL(mpic_msgr_enable);
-
-void mpic_msgr_disable(struct mpic_msgr *msgr)
-{
- unsigned long flags;
-
- raw_spin_lock_irqsave(&msgr->lock, flags);
- _mpic_msgr_disable(msgr);
- raw_spin_unlock_irqrestore(&msgr->lock, flags);
-}
-EXPORT_SYMBOL_GPL(mpic_msgr_disable);
-
-/* The following three functions are used to compute the order and number of
- * the message register blocks. They are clearly very inefficent. However,
- * they are called *only* a few times during device initialization.
- */
-static unsigned int mpic_msgr_number_of_blocks(void)
-{
- unsigned int count;
- struct device_node *aliases;
-
- count = 0;
- aliases = of_find_node_by_name(NULL, "aliases");
-
- if (aliases) {
- char buf[32];
-
- for (;;) {
- snprintf(buf, sizeof(buf), "mpic-msgr-block%d", count);
- if (!of_find_property(aliases, buf, NULL))
- break;
-
- count += 1;
- }
- }
-
- return count;
-}
-
-static unsigned int mpic_msgr_number_of_registers(void)
-{
- return mpic_msgr_number_of_blocks() * MPIC_MSGR_REGISTERS_PER_BLOCK;
-}
-
-static int mpic_msgr_block_number(struct device_node *node)
-{
- struct device_node *aliases;
- unsigned int index, number_of_blocks;
- char buf[64];
-
- number_of_blocks = mpic_msgr_number_of_blocks();
- aliases = of_find_node_by_name(NULL, "aliases");
- if (!aliases)
- return -1;
-
- for (index = 0; index < number_of_blocks; ++index) {
- struct property *prop;
-
- snprintf(buf, sizeof(buf), "mpic-msgr-block%d", index);
- prop = of_find_property(aliases, buf, NULL);
- if (node == of_find_node_by_path(prop->value))
- break;
- }
-
- return index == number_of_blocks ? -1 : index;
-}
-
-/* The probe function for a single message register block.
- */
-static __devinit int mpic_msgr_probe(struct platform_device *dev)
-{
- void __iomem *msgr_block_addr;
- int block_number;
- struct resource rsrc;
- unsigned int i;
- unsigned int irq_index;
- struct device_node *np = dev->dev.of_node;
- unsigned int receive_mask;
- const unsigned int *prop;
-
- if (!np) {
- dev_err(&dev->dev, "Device OF-Node is NULL");
- return -EFAULT;
- }
-
- /* Allocate the message register array upon the first device
- * registered.
- */
- if (!mpic_msgrs) {
- mpic_msgr_count = mpic_msgr_number_of_registers();
- dev_info(&dev->dev, "Found %d message registers\n",
- mpic_msgr_count);
-
- mpic_msgrs = kzalloc(sizeof(struct mpic_msgr) * mpic_msgr_count,
- GFP_KERNEL);
- if (!mpic_msgrs) {
- dev_err(&dev->dev,
- "No memory for message register blocks\n");
- return -ENOMEM;
- }
- }
- dev_info(&dev->dev, "Of-device full name %s\n", np->full_name);
-
- /* IO map the message register block. */
- of_address_to_resource(np, 0, &rsrc);
- msgr_block_addr = ioremap(rsrc.start, rsrc.end - rsrc.start);
- if (!msgr_block_addr) {
- dev_err(&dev->dev, "Failed to iomap MPIC message registers");
- return -EFAULT;
- }
-
- /* Ensure the block has a defined order. */
- block_number = mpic_msgr_block_number(np);
- if (block_number < 0) {
- dev_err(&dev->dev,
- "Failed to find message register block alias\n");
- return -ENODEV;
- }
- dev_info(&dev->dev, "Setting up message register block %d\n",
- block_number);
-
- /* Grab the receive mask which specifies what registers can receive
- * interrupts.
- */
- prop = of_get_property(np, "mpic-msgr-receive-mask", NULL);
- receive_mask = (prop) ? *prop : 0xF;
-
- /* Build up the appropriate message register data structures. */
- for (i = 0, irq_index = 0; i < MPIC_MSGR_REGISTERS_PER_BLOCK; ++i) {
- struct mpic_msgr *msgr;
- unsigned int reg_number;
-
- msgr = kzalloc(sizeof(struct mpic_msgr), GFP_KERNEL);
- if (!msgr) {
- dev_err(&dev->dev, "No memory for message register\n");
- return -ENOMEM;
- }
-
- reg_number = block_number * MPIC_MSGR_REGISTERS_PER_BLOCK + i;
- msgr->base = msgr_block_addr + i * MPIC_MSGR_STRIDE;
- msgr->mer = (u32 *)((u8 *)msgr->base + MPIC_MSGR_MER_OFFSET);
- msgr->in_use = MSGR_FREE;
- msgr->num = i;
- raw_spin_lock_init(&msgr->lock);
-
- if (receive_mask & (1 << i)) {
- struct resource irq;
-
- if (of_irq_to_resource(np, irq_index, &irq) == NO_IRQ) {
- dev_err(&dev->dev,
- "Missing interrupt specifier");
- kfree(msgr);
- return -EFAULT;
- }
- msgr->irq = irq.start;
- irq_index += 1;
- } else {
- msgr->irq = NO_IRQ;
- }
-
- mpic_msgrs[reg_number] = msgr;
- mpic_msgr_disable(msgr);
- dev_info(&dev->dev, "Register %d initialized: irq %d\n",
- reg_number, msgr->irq);
-
- }
-
- return 0;
-}
-
-static const struct of_device_id mpic_msgr_ids[] = {
- {
- .compatible = "fsl,mpic-v3.1-msgr",
- .data = NULL,
- },
- {}
-};
-
-static struct platform_driver mpic_msgr_driver = {
- .driver = {
- .name = "mpic-msgr",
- .owner = THIS_MODULE,
- .of_match_table = mpic_msgr_ids,
- },
- .probe = mpic_msgr_probe,
-};
-
-static __init int mpic_msgr_init(void)
-{
- return platform_driver_register(&mpic_msgr_driver);
-}
-subsys_initcall(mpic_msgr_init);