Commit b26b2d49 authored by Dominik Brodowski's avatar Dominik Brodowski Committed by Jesse Barnes

resource/PCI: align functions now return start of resource

As suggested by Linus, align functions should return the start
of a resource, not void. An update of "res->start" is no longer
necessary.

Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 93da6202
......@@ -126,7 +126,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_final);
#define MB (1024*KB)
#define GB (1024*MB)
void
resource_size_t
pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
......@@ -184,7 +184,7 @@ pcibios_align_resource(void *data, struct resource *res,
}
}
res->start = start;
return start;
}
#undef KB
#undef MB
......
......@@ -616,15 +616,17 @@ char * __init pcibios_setup(char *str)
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might be mirrored at 0x0100-0x03ff..
*/
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO && start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
res->start = (start + align - 1) & ~(align - 1);
start = (start + align - 1) & ~(align - 1);
return start;
}
/**
......
......@@ -41,18 +41,16 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
return 0;
}
void
resource_size_t
pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
if (res->flags & IORESOURCE_IO) {
resource_size_t start = res->start;
resource_size_t start = res->start;
if (start & 0x300) {
start = (start + 0x3ff) & ~0x3ff;
res->start = start;
}
}
if ((res->flags & IORESOURCE_IO) && (start & 0x300))
start = (start + 0x3ff) & ~0x3ff;
return start
}
int pcibios_enable_resources(struct pci_dev *dev, int mask)
......
......@@ -32,18 +32,16 @@
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might have be mirrored at 0x0100-0x03ff..
*/
void
resource_size_t
pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
if (res->flags & IORESOURCE_IO) {
resource_size_t start = res->start;
resource_size_t start = res->start;
if (start & 0x300) {
start = (start + 0x3ff) & ~0x3ff;
res->start = start;
}
}
if ((res->flags & IORESOURCE_IO) && (start & 0x300))
start = (start + 0x3ff) & ~0x3ff;
return start
}
......
......@@ -547,10 +547,11 @@ pcibios_disable_device (struct pci_dev *dev)
acpi_pci_irq_disable(dev);
}
void
resource_size_t
pcibios_align_resource (void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
return res->start;
}
/*
......
......@@ -49,7 +49,7 @@ static int pci_initialized;
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might have be mirrored at 0x0100-0x03ff..
*/
void
resource_size_t
pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
......@@ -73,7 +73,7 @@ pcibios_align_resource(void *data, struct resource *res,
start = PCIBIOS_MIN_MEM + hose->mem_resource->start;
}
res->start = start;
return start;
}
static void __devinit pcibios_scanbus(struct pci_controller *hose)
......
......@@ -345,14 +345,13 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return pcibios_enable_resources(dev);
}
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
resource_size_t start = res->start;
/* We need to avoid collisions with `mirrored' VGA ports
and other strange ISA hardware, so we always want the
addresses kilobyte aligned. */
......@@ -363,8 +362,9 @@ void pcibios_align_resource(void *data, struct resource *res,
}
start = (start + 1024 - 1) & ~(1024 - 1);
res->start = start;
}
return start;
}
struct pci_ops titan_pci_ops = {
......
......@@ -31,9 +31,11 @@
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might have be mirrored at 0x0100-0x03ff..
*/
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
resource_size_t start = res->start;
#if 0
struct pci_dev *dev = data;
......@@ -47,14 +49,10 @@ void pcibios_align_resource(void *data, struct resource *res,
);
#endif
if (res->flags & IORESOURCE_IO) {
unsigned long start = res->start;
if ((res->flags & IORESOURCE_IO) && (start & 0x300))
start = (start + 0x3ff) & ~0x3ff;
if (start & 0x300) {
start = (start + 0x3ff) & ~0x3ff;
res->start = start;
}
}
return start;
}
......
......@@ -254,10 +254,10 @@ EXPORT_SYMBOL(pcibios_bus_to_resource);
* Since we are just checking candidates, don't use any fields other
* than res->start.
*/
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t alignment)
{
resource_size_t mask, align;
resource_size_t mask, align, start = res->start;
DBG_RES("pcibios_align_resource(%s, (%p) [%lx,%lx]/%x, 0x%lx, 0x%lx)\n",
pci_name(((struct pci_dev *) data)),
......@@ -269,10 +269,10 @@ void pcibios_align_resource(void *data, struct resource *res,
/* Align to largest of MIN or input size */
mask = max(alignment, align) - 1;
res->start += mask;
res->start &= ~mask;
start += mask;
start &= ~mask;
/* The caller updates the end field, we don't. */
return start;
}
......
......@@ -1181,21 +1181,20 @@ static int skip_isa_ioresource_align(struct pci_dev *dev)
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might have be mirrored at 0x0100-0x03ff..
*/
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
resource_size_t start = res->start;
if (skip_isa_ioresource_align(dev))
return;
if (start & 0x300) {
return start;
if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
res->start = start;
}
}
return start;
}
EXPORT_SYMBOL(pcibios_align_resource);
......
......@@ -148,8 +148,8 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
* addresses to be allocated in the 0x000-0x0ff region
* modulo 0x400.
*/
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
struct pci_channel *chan = dev->sysdata;
......@@ -171,7 +171,7 @@ void pcibios_align_resource(void *data, struct resource *res,
start = PCIBIOS_MIN_MEM + chan->mem_resource->start;
}
res->start = start;
return start;
}
void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
......
......@@ -722,9 +722,10 @@ void pcibios_update_irq(struct pci_dev *pdev, int irq)
{
}
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
return res->start;
}
int pcibios_enable_device(struct pci_dev *dev, int mask)
......
......@@ -768,9 +768,10 @@ char * __devinit pcibios_setup(char *str)
return str;
}
void pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
resource_size_t pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
return res->start;
}
int pcibios_enable_device(struct pci_dev *pdev, int mask)
......
......@@ -60,22 +60,20 @@ skip_isa_ioresource_align(struct pci_dev *dev) {
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might have be mirrored at 0x0100-0x03ff..
*/
void
resource_size_t
pcibios_align_resource(void *data, struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pci_dev *dev = data;
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
resource_size_t start = res->start;
if (skip_isa_ioresource_align(dev))
return;
if (start & 0x300) {
return start;
if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
res->start = start;
}
}
return start;
}
EXPORT_SYMBOL(pcibios_align_resource);
......
......@@ -69,26 +69,25 @@ static int pci_bus_count;
* but we want to try to avoid allocating at 0x2900-0x2bff
* which might have be mirrored at 0x0100-0x03ff..
*/
void
resource_size_t
pcibios_align_resource(void *data, struct resource *res, resource_size_t size,
resource_size_t align)
{
struct pci_dev *dev = data;
resource_size_t start = res->start;
if (res->flags & IORESOURCE_IO) {
resource_size_t start = res->start;
if (size > 0x100) {
printk(KERN_ERR "PCI: I/O Region %s/%d too large"
" (%ld bytes)\n", pci_name(dev),
dev->resource - res, size);
}
if (start & 0x300) {
if (start & 0x300)
start = (start + 0x3ff) & ~0x3ff;
res->start = start;
}
}
return start;
}
int
......
......@@ -36,8 +36,10 @@ int
pci_bus_alloc_resource(struct pci_bus *bus, struct resource *res,
resource_size_t size, resource_size_t align,
resource_size_t min, unsigned int type_mask,
void (*alignf)(void *, struct resource *, resource_size_t,
resource_size_t),
resource_size_t (*alignf)(void *,
struct resource *,
resource_size_t,
resource_size_t),
void *alignf_data)
{
int i, ret = -ENOMEM;
......
......@@ -114,22 +114,20 @@ struct pcmcia_align_data {
unsigned long offset;
};
static void pcmcia_align(void *align_data, struct resource *res,
unsigned long size, unsigned long align)
static resource_size_t pcmcia_align(void *align_data, struct resource *res,
resource_size_t size, resource_size_t align)
{
struct pcmcia_align_data *data = align_data;
unsigned long start;
resource_size_t start;
start = (res->start & ~data->mask) + data->offset;
if (start < res->start)
start += data->mask + 1;
res->start = start;
#ifdef CONFIG_X86
if (res->flags & IORESOURCE_IO) {
if (start & 0x300) {
start = (start + 0x3ff) & ~0x3ff;
res->start = start;
}
}
#endif
......@@ -137,9 +135,11 @@ static void pcmcia_align(void *align_data, struct resource *res,
#ifdef CONFIG_M68K
if (res->flags & IORESOURCE_IO) {
if ((res->start + size - 1) >= 1024)
res->start = res->end;
start = res->end;
}
#endif
return start;
}
......
......@@ -533,7 +533,7 @@ struct pcmcia_align_data {
struct resource_map *map;
};
static void
static resource_size_t
pcmcia_common_align(void *align_data, struct resource *res,
resource_size_t size, resource_size_t align)
{
......@@ -545,17 +545,18 @@ pcmcia_common_align(void *align_data, struct resource *res,
start = (res->start & ~data->mask) + data->offset;
if (start < res->start)
start += data->mask + 1;
res->start = start;
return start;
}
static void
static resource_size_t
pcmcia_align(void *align_data, struct resource *res, resource_size_t size,
resource_size_t align)
{
struct pcmcia_align_data *data = align_data;
struct resource_map *m;
resource_size_t start;
pcmcia_common_align(data, res, size, align);
start = pcmcia_common_align(data, res, size, align);
for (m = data->map->next; m != data->map; m = m->next) {
unsigned long start = m->base;
......@@ -567,8 +568,7 @@ pcmcia_align(void *align_data, struct resource *res, resource_size_t size,
* fit here.
*/
if (res->start < start) {
res->start = start;
pcmcia_common_align(data, res, size, align);
start = pcmcia_common_align(data, res, size, align);
}
/*
......@@ -586,7 +586,9 @@ pcmcia_align(void *align_data, struct resource *res, resource_size_t size,
* If we failed to find something suitable, ensure we fail.
*/
if (m == data->map)
res->start = res->end;
start = res->end;
return start;
}
/*
......
......@@ -120,8 +120,10 @@ extern void insert_resource_expand_to_fit(struct resource *root, struct resource
extern int allocate_resource(struct resource *root, struct resource *new,
resource_size_t size, resource_size_t min,
resource_size_t max, resource_size_t align,
void (*alignf)(void *, struct resource *,
resource_size_t, resource_size_t),
resource_size_t (*alignf)(void *,
struct resource *,
resource_size_t,
resource_size_t),
void *alignf_data);
int adjust_resource(struct resource *res, resource_size_t start,
resource_size_t size);
......
......@@ -592,7 +592,8 @@ int __must_check pcibios_enable_device(struct pci_dev *, int mask);
char *pcibios_setup(char *str);
/* Used only when drivers/pci/setup.c is used */
void pcibios_align_resource(void *, struct resource *, resource_size_t,
resource_size_t pcibios_align_resource(void *, struct resource *,
resource_size_t,
resource_size_t);
void pcibios_update_irq(struct pci_dev *, int irq);
......@@ -827,8 +828,9 @@ int __must_check pci_bus_alloc_resource(struct pci_bus *bus,
struct resource *res, resource_size_t size,
resource_size_t align, resource_size_t min,
unsigned int type_mask,
void (*alignf)(void *, struct resource *,
resource_size_t, resource_size_t),
resource_size_t (*alignf)(void *, struct resource *,
resource_size_t,
resource_size_t),
void *alignf_data);
void pci_enable_bridges(struct pci_bus *bus);
......
......@@ -303,8 +303,10 @@ int walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
static int find_resource(struct resource *root, struct resource *new,
resource_size_t size, resource_size_t min,
resource_size_t max, resource_size_t align,
void (*alignf)(void *, struct resource *,
resource_size_t, resource_size_t),
resource_size_t (*alignf)(void *,
struct resource *,
resource_size_t,
resource_size_t),
void *alignf_data)
{
struct resource *this = root->child;
......@@ -330,7 +332,7 @@ static int find_resource(struct resource *root, struct resource *new,
tmp.end = max;
tmp.start = ALIGN(tmp.start, align);
if (alignf)
alignf(alignf_data, &tmp, size, align);
tmp.start = alignf(alignf_data, &tmp, size, align);
if (tmp.start < tmp.end && tmp.end - tmp.start >= size - 1) {
new->start = tmp.start;
new->end = tmp.start + size - 1;
......@@ -358,8 +360,10 @@ static int find_resource(struct resource *root, struct resource *new,
int allocate_resource(struct resource *root, struct resource *new,
resource_size_t size, resource_size_t min,
resource_size_t max, resource_size_t align,
void (*alignf)(void *, struct resource *,
resource_size_t, resource_size_t),
resource_size_t (*alignf)(void *,
struct resource *,
resource_size_t,
resource_size_t),
void *alignf_data)
{
int err;
......
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