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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/alpha/kernel/pci-sysfs.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/alpha/kernel/pci-sysfs.c')
-rw-r--r--ANDROID_3.4.5/arch/alpha/kernel/pci-sysfs.c369
1 files changed, 0 insertions, 369 deletions
diff --git a/ANDROID_3.4.5/arch/alpha/kernel/pci-sysfs.c b/ANDROID_3.4.5/arch/alpha/kernel/pci-sysfs.c
deleted file mode 100644
index 53649c7d..00000000
--- a/ANDROID_3.4.5/arch/alpha/kernel/pci-sysfs.c
+++ /dev/null
@@ -1,369 +0,0 @@
-/*
- * arch/alpha/kernel/pci-sysfs.c
- *
- * Copyright (C) 2009 Ivan Kokshaysky
- *
- * Alpha PCI resource files.
- *
- * Loosely based on generic HAVE_PCI_MMAP implementation in
- * drivers/pci/pci-sysfs.c
- */
-
-#include <linux/sched.h>
-#include <linux/stat.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-
-static int hose_mmap_page_range(struct pci_controller *hose,
- struct vm_area_struct *vma,
- enum pci_mmap_state mmap_type, int sparse)
-{
- unsigned long base;
-
- if (mmap_type == pci_mmap_mem)
- base = sparse ? hose->sparse_mem_base : hose->dense_mem_base;
- else
- base = sparse ? hose->sparse_io_base : hose->dense_io_base;
-
- vma->vm_pgoff += base >> PAGE_SHIFT;
- vma->vm_flags |= (VM_IO | VM_RESERVED);
-
- return io_remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
- vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
-}
-
-static int __pci_mmap_fits(struct pci_dev *pdev, int num,
- struct vm_area_struct *vma, int sparse)
-{
- unsigned long nr, start, size;
- int shift = sparse ? 5 : 0;
-
- nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
- start = vma->vm_pgoff;
- size = ((pci_resource_len(pdev, num) - 1) >> (PAGE_SHIFT - shift)) + 1;
-
- if (start < size && size - start >= nr)
- return 1;
- WARN(1, "process \"%s\" tried to map%s 0x%08lx-0x%08lx on %s BAR %d "
- "(size 0x%08lx)\n",
- current->comm, sparse ? " sparse" : "", start, start + nr,
- pci_name(pdev), num, size);
- return 0;
-}
-
-/**
- * pci_mmap_resource - map a PCI resource into user memory space
- * @kobj: kobject for mapping
- * @attr: struct bin_attribute for the file being mapped
- * @vma: struct vm_area_struct passed into the mmap
- * @sparse: address space type
- *
- * Use the bus mapping routines to map a PCI resource into userspace.
- */
-static int pci_mmap_resource(struct kobject *kobj,
- struct bin_attribute *attr,
- struct vm_area_struct *vma, int sparse)
-{
- struct pci_dev *pdev = to_pci_dev(container_of(kobj,
- struct device, kobj));
- struct resource *res = attr->private;
- enum pci_mmap_state mmap_type;
- struct pci_bus_region bar;
- int i;
-
- for (i = 0; i < PCI_ROM_RESOURCE; i++)
- if (res == &pdev->resource[i])
- break;
- if (i >= PCI_ROM_RESOURCE)
- return -ENODEV;
-
- if (!__pci_mmap_fits(pdev, i, vma, sparse))
- return -EINVAL;
-
- if (iomem_is_exclusive(res->start))
- return -EINVAL;
-
- pcibios_resource_to_bus(pdev, &bar, res);
- vma->vm_pgoff += bar.start >> (PAGE_SHIFT - (sparse ? 5 : 0));
- mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
-
- return hose_mmap_page_range(pdev->sysdata, vma, mmap_type, sparse);
-}
-
-static int pci_mmap_resource_sparse(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- struct vm_area_struct *vma)
-{
- return pci_mmap_resource(kobj, attr, vma, 1);
-}
-
-static int pci_mmap_resource_dense(struct file *filp, struct kobject *kobj,
- struct bin_attribute *attr,
- struct vm_area_struct *vma)
-{
- return pci_mmap_resource(kobj, attr, vma, 0);
-}
-
-/**
- * pci_remove_resource_files - cleanup resource files
- * @dev: dev to cleanup
- *
- * If we created resource files for @dev, remove them from sysfs and
- * free their resources.
- */
-void pci_remove_resource_files(struct pci_dev *pdev)
-{
- int i;
-
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
- struct bin_attribute *res_attr;
-
- res_attr = pdev->res_attr[i];
- if (res_attr) {
- sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
- kfree(res_attr);
- }
-
- res_attr = pdev->res_attr_wc[i];
- if (res_attr) {
- sysfs_remove_bin_file(&pdev->dev.kobj, res_attr);
- kfree(res_attr);
- }
- }
-}
-
-static int sparse_mem_mmap_fits(struct pci_dev *pdev, int num)
-{
- struct pci_bus_region bar;
- struct pci_controller *hose = pdev->sysdata;
- long dense_offset;
- unsigned long sparse_size;
-
- pcibios_resource_to_bus(pdev, &bar, &pdev->resource[num]);
-
- /* All core logic chips have 4G sparse address space, except
- CIA which has 16G (see xxx_SPARSE_MEM and xxx_DENSE_MEM
- definitions in asm/core_xxx.h files). This corresponds
- to 128M or 512M of the bus space. */
- dense_offset = (long)(hose->dense_mem_base - hose->sparse_mem_base);
- sparse_size = dense_offset >= 0x400000000UL ? 0x20000000 : 0x8000000;
-
- return bar.end < sparse_size;
-}
-
-static int pci_create_one_attr(struct pci_dev *pdev, int num, char *name,
- char *suffix, struct bin_attribute *res_attr,
- unsigned long sparse)
-{
- size_t size = pci_resource_len(pdev, num);
-
- sprintf(name, "resource%d%s", num, suffix);
- res_attr->mmap = sparse ? pci_mmap_resource_sparse :
- pci_mmap_resource_dense;
- res_attr->attr.name = name;
- res_attr->attr.mode = S_IRUSR | S_IWUSR;
- res_attr->size = sparse ? size << 5 : size;
- res_attr->private = &pdev->resource[num];
- return sysfs_create_bin_file(&pdev->dev.kobj, res_attr);
-}
-
-static int pci_create_attr(struct pci_dev *pdev, int num)
-{
- /* allocate attribute structure, piggyback attribute name */
- int retval, nlen1, nlen2 = 0, res_count = 1;
- unsigned long sparse_base, dense_base;
- struct bin_attribute *attr;
- struct pci_controller *hose = pdev->sysdata;
- char *suffix, *attr_name;
-
- suffix = ""; /* Assume bwx machine, normal resourceN files. */
- nlen1 = 10;
-
- if (pdev->resource[num].flags & IORESOURCE_MEM) {
- sparse_base = hose->sparse_mem_base;
- dense_base = hose->dense_mem_base;
- if (sparse_base && !sparse_mem_mmap_fits(pdev, num)) {
- sparse_base = 0;
- suffix = "_dense";
- nlen1 = 16; /* resourceN_dense */
- }
- } else {
- sparse_base = hose->sparse_io_base;
- dense_base = hose->dense_io_base;
- }
-
- if (sparse_base) {
- suffix = "_sparse";
- nlen1 = 17;
- if (dense_base) {
- nlen2 = 16; /* resourceN_dense */
- res_count = 2;
- }
- }
-
- attr = kzalloc(sizeof(*attr) * res_count + nlen1 + nlen2, GFP_ATOMIC);
- if (!attr)
- return -ENOMEM;
-
- /* Create bwx, sparse or single dense file */
- attr_name = (char *)(attr + res_count);
- pdev->res_attr[num] = attr;
- retval = pci_create_one_attr(pdev, num, attr_name, suffix, attr,
- sparse_base);
- if (retval || res_count == 1)
- return retval;
-
- /* Create dense file */
- attr_name += nlen1;
- attr++;
- pdev->res_attr_wc[num] = attr;
- return pci_create_one_attr(pdev, num, attr_name, "_dense", attr, 0);
-}
-
-/**
- * pci_create_resource_files - create resource files in sysfs for @dev
- * @dev: dev in question
- *
- * Walk the resources in @dev creating files for each resource available.
- */
-int pci_create_resource_files(struct pci_dev *pdev)
-{
- int i;
- int retval;
-
- /* Expose the PCI resources from this device as files */
- for (i = 0; i < PCI_ROM_RESOURCE; i++) {
-
- /* skip empty resources */
- if (!pci_resource_len(pdev, i))
- continue;
-
- retval = pci_create_attr(pdev, i);
- if (retval) {
- pci_remove_resource_files(pdev);
- return retval;
- }
- }
- return 0;
-}
-
-/* Legacy I/O bus mapping stuff. */
-
-static int __legacy_mmap_fits(struct pci_controller *hose,
- struct vm_area_struct *vma,
- unsigned long res_size, int sparse)
-{
- unsigned long nr, start, size;
-
- nr = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
- start = vma->vm_pgoff;
- size = ((res_size - 1) >> PAGE_SHIFT) + 1;
-
- if (start < size && size - start >= nr)
- return 1;
- WARN(1, "process \"%s\" tried to map%s 0x%08lx-0x%08lx on hose %d "
- "(size 0x%08lx)\n",
- current->comm, sparse ? " sparse" : "", start, start + nr,
- hose->index, size);
- return 0;
-}
-
-static inline int has_sparse(struct pci_controller *hose,
- enum pci_mmap_state mmap_type)
-{
- unsigned long base;
-
- base = (mmap_type == pci_mmap_mem) ? hose->sparse_mem_base :
- hose->sparse_io_base;
-
- return base != 0;
-}
-
-int pci_mmap_legacy_page_range(struct pci_bus *bus, struct vm_area_struct *vma,
- enum pci_mmap_state mmap_type)
-{
- struct pci_controller *hose = bus->sysdata;
- int sparse = has_sparse(hose, mmap_type);
- unsigned long res_size;
-
- res_size = (mmap_type == pci_mmap_mem) ? bus->legacy_mem->size :
- bus->legacy_io->size;
- if (!__legacy_mmap_fits(hose, vma, res_size, sparse))
- return -EINVAL;
-
- return hose_mmap_page_range(hose, vma, mmap_type, sparse);
-}
-
-/**
- * pci_adjust_legacy_attr - adjustment of legacy file attributes
- * @b: bus to create files under
- * @mmap_type: I/O port or memory
- *
- * Adjust file name and size for sparse mappings.
- */
-void pci_adjust_legacy_attr(struct pci_bus *bus, enum pci_mmap_state mmap_type)
-{
- struct pci_controller *hose = bus->sysdata;
-
- if (!has_sparse(hose, mmap_type))
- return;
-
- if (mmap_type == pci_mmap_mem) {
- bus->legacy_mem->attr.name = "legacy_mem_sparse";
- bus->legacy_mem->size <<= 5;
- } else {
- bus->legacy_io->attr.name = "legacy_io_sparse";
- bus->legacy_io->size <<= 5;
- }
- return;
-}
-
-/* Legacy I/O bus read/write functions */
-int pci_legacy_read(struct pci_bus *bus, loff_t port, u32 *val, size_t size)
-{
- struct pci_controller *hose = bus->sysdata;
-
- port += hose->io_space->start;
-
- switch(size) {
- case 1:
- *((u8 *)val) = inb(port);
- return 1;
- case 2:
- if (port & 1)
- return -EINVAL;
- *((u16 *)val) = inw(port);
- return 2;
- case 4:
- if (port & 3)
- return -EINVAL;
- *((u32 *)val) = inl(port);
- return 4;
- }
- return -EINVAL;
-}
-
-int pci_legacy_write(struct pci_bus *bus, loff_t port, u32 val, size_t size)
-{
- struct pci_controller *hose = bus->sysdata;
-
- port += hose->io_space->start;
-
- switch(size) {
- case 1:
- outb(port, val);
- return 1;
- case 2:
- if (port & 1)
- return -EINVAL;
- outw(port, val);
- return 2;
- case 4:
- if (port & 3)
- return -EINVAL;
- outl(port, val);
- return 4;
- }
- return -EINVAL;
-}