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c41e0deb50
linux-next/drivers/char/agp/intel-agp.c
Eric Anholt c41e0deb50 [AGPGART] fix detection of aperture size versus GTT size on G965 
On the G965, the GTT size may be larger than is required to cover the
aperture.  (In fact, on all hardware we've seen, the GTT is 512KB to the
aperture's 256MB).  A previous commit forced the aperture size to 512MB on
G965 to match GTT, which would likely result in hangs at best if users
tried to rely on agpgart's aperture size information.  Instead, we use the
resource length for the aperture size and the system's reported GTT size
when available for the GTT size.

Because the MSAC registers which had been read for aperture size detection
on i9xx chips just cause a change in the resource size, we can use generic
code for aperture detection on all i9xx.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dave Jones <davej@redhat.com>
2006-12-22 23:12:22 -05:00

2050 lines
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/*
* Intel AGPGART routines.
*/
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/pagemap.h>
#include <linux/agp_backend.h>
#include "agp.h"
#define PCI_DEVICE_ID_INTEL_82946GZ_HB 0x2970
#define PCI_DEVICE_ID_INTEL_82946GZ_IG 0x2972
#define PCI_DEVICE_ID_INTEL_82965G_1_HB 0x2980
#define PCI_DEVICE_ID_INTEL_82965G_1_IG 0x2982
#define PCI_DEVICE_ID_INTEL_82965Q_HB 0x2990
#define PCI_DEVICE_ID_INTEL_82965Q_IG 0x2992
#define PCI_DEVICE_ID_INTEL_82965G_HB 0x29A0
#define PCI_DEVICE_ID_INTEL_82965G_IG 0x29A2
#define IS_I965 (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82946GZ_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_1_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965Q_HB || \
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82965G_HB)
/* Intel 815 register */
#define INTEL_815_APCONT 0x51
#define INTEL_815_ATTBASE_MASK ~0x1FFFFFFF
/* Intel i820 registers */
#define INTEL_I820_RDCR 0x51
#define INTEL_I820_ERRSTS 0xc8
/* Intel i840 registers */
#define INTEL_I840_MCHCFG 0x50
#define INTEL_I840_ERRSTS 0xc8
/* Intel i850 registers */
#define INTEL_I850_MCHCFG 0x50
#define INTEL_I850_ERRSTS 0xc8
/* intel 915G registers */
#define I915_GMADDR 0x18
#define I915_MMADDR 0x10
#define I915_PTEADDR 0x1C
#define I915_GMCH_GMS_STOLEN_48M (0x6 << 4)
#define I915_GMCH_GMS_STOLEN_64M (0x7 << 4)
/* Intel 965G registers */
#define I965_MSAC 0x62
/* Intel 7505 registers */
#define INTEL_I7505_APSIZE 0x74
#define INTEL_I7505_NCAPID 0x60
#define INTEL_I7505_NISTAT 0x6c
#define INTEL_I7505_ATTBASE 0x78
#define INTEL_I7505_ERRSTS 0x42
#define INTEL_I7505_AGPCTRL 0x70
#define INTEL_I7505_MCHCFG 0x50
static struct aper_size_info_fixed intel_i810_sizes[] =
{
{64, 16384, 4},
/* The 32M mode still requires a 64k gatt */
{32, 8192, 4}
};
#define AGP_DCACHE_MEMORY 1
#define AGP_PHYS_MEMORY 2
static struct gatt_mask intel_i810_masks[] =
{
{.mask = I810_PTE_VALID, .type = 0},
{.mask = (I810_PTE_VALID | I810_PTE_LOCAL), .type = AGP_DCACHE_MEMORY},
{.mask = I810_PTE_VALID, .type = 0}
};
static struct _intel_i810_private {
struct pci_dev *i810_dev; /* device one */
volatile u8 __iomem *registers;
int num_dcache_entries;
} intel_i810_private;
static int intel_i810_fetch_size(void)
{
u32 smram_miscc;
struct aper_size_info_fixed *values;
pci_read_config_dword(agp_bridge->dev, I810_SMRAM_MISCC, &smram_miscc);
values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
if ((smram_miscc & I810_GMS) == I810_GMS_DISABLE) {
printk(KERN_WARNING PFX "i810 is disabled\n");
return 0;
}
if ((smram_miscc & I810_GFX_MEM_WIN_SIZE) == I810_GFX_MEM_WIN_32M) {
agp_bridge->previous_size =
agp_bridge->current_size = (void *) (values + 1);
agp_bridge->aperture_size_idx = 1;
return values[1].size;
} else {
agp_bridge->previous_size =
agp_bridge->current_size = (void *) (values);
agp_bridge->aperture_size_idx = 0;
return values[0].size;
}
return 0;
}
static int intel_i810_configure(void)
{
struct aper_size_info_fixed *current_size;
u32 temp;
int i;
current_size = A_SIZE_FIX(agp_bridge->current_size);
pci_read_config_dword(intel_i810_private.i810_dev, I810_MMADDR, &temp);
temp &= 0xfff80000;
intel_i810_private.registers = ioremap(temp, 128 * 4096);
if (!intel_i810_private.registers) {
printk(KERN_ERR PFX "Unable to remap memory.\n");
return -ENOMEM;
}
if ((readl(intel_i810_private.registers+I810_DRAM_CTL)
& I810_DRAM_ROW_0) == I810_DRAM_ROW_0_SDRAM) {
/* This will need to be dynamically assigned */
printk(KERN_INFO PFX "detected 4MB dedicated video ram.\n");
intel_i810_private.num_dcache_entries = 1024;
}
pci_read_config_dword(intel_i810_private.i810_dev, I810_GMADDR, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_i810_private.registers+I810_PGETBL_CTL);
readl(intel_i810_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
if (agp_bridge->driver->needs_scratch_page) {
for (i = 0; i < current_size->num_entries; i++) {
writel(agp_bridge->scratch_page, intel_i810_private.registers+I810_PTE_BASE+(i*4));
readl(intel_i810_private.registers+I810_PTE_BASE+(i*4)); /* PCI posting. */
}
}
global_cache_flush();
return 0;
}
static void intel_i810_cleanup(void)
{
writel(0, intel_i810_private.registers+I810_PGETBL_CTL);
readl(intel_i810_private.registers); /* PCI Posting. */
iounmap(intel_i810_private.registers);
}
static void intel_i810_tlbflush(struct agp_memory *mem)
{
return;
}
static void intel_i810_agp_enable(struct agp_bridge_data *bridge, u32 mode)
{
return;
}
/* Exists to support ARGB cursors */
static void *i8xx_alloc_pages(void)
{
struct page * page;
page = alloc_pages(GFP_KERNEL | GFP_DMA32, 2);
if (page == NULL)
return NULL;
if (change_page_attr(page, 4, PAGE_KERNEL_NOCACHE) < 0) {
global_flush_tlb();
__free_page(page);
return NULL;
}
global_flush_tlb();
get_page(page);
SetPageLocked(page);
atomic_inc(&agp_bridge->current_memory_agp);
return page_address(page);
}
static void i8xx_destroy_pages(void *addr)
{
struct page *page;
if (addr == NULL)
return;
page = virt_to_page(addr);
change_page_attr(page, 4, PAGE_KERNEL);
global_flush_tlb();
put_page(page);
unlock_page(page);
free_pages((unsigned long)addr, 2);
atomic_dec(&agp_bridge->current_memory_agp);
}
static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
int type)
{
int i, j, num_entries;
void *temp;
if (mem->page_count == 0)
return 0;
temp = agp_bridge->current_size;
num_entries = A_SIZE_FIX(temp)->num_entries;
if ((pg_start + mem->page_count) > num_entries)
return -EINVAL;
for (j = pg_start; j < (pg_start + mem->page_count); j++) {
if (!PGE_EMPTY(agp_bridge, readl(agp_bridge->gatt_table+j)))
return -EBUSY;
}
if (type != 0 || mem->type != 0) {
if ((type == AGP_DCACHE_MEMORY) && (mem->type == AGP_DCACHE_MEMORY)) {
/* special insert */
if (!mem->is_flushed) {
global_cache_flush();
mem->is_flushed = TRUE;
}
for (i = pg_start; i < (pg_start + mem->page_count); i++) {
writel((i*4096)|I810_PTE_LOCAL|I810_PTE_VALID, intel_i810_private.registers+I810_PTE_BASE+(i*4));
}
readl(intel_i810_private.registers+I810_PTE_BASE+((i-1)*4)); /* PCI Posting. */
agp_bridge->driver->tlb_flush(mem);
return 0;
}
if ((type == AGP_PHYS_MEMORY) && (mem->type == AGP_PHYS_MEMORY))
goto insert;
return -EINVAL;
}
insert:
if (!mem->is_flushed) {
global_cache_flush();
mem->is_flushed = TRUE;
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
mem->memory[i], mem->type),
intel_i810_private.registers+I810_PTE_BASE+(j*4));
}
readl(intel_i810_private.registers+I810_PTE_BASE+(j-1*4)); /* PCI Posting. */
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start,
int type)
{
int i;
if (mem->page_count == 0)
return 0;
for (i = pg_start; i < (mem->page_count + pg_start); i++) {
writel(agp_bridge->scratch_page, intel_i810_private.registers+I810_PTE_BASE+(i*4));
}
readl(intel_i810_private.registers+I810_PTE_BASE+((i-1)*4));
agp_bridge->driver->tlb_flush(mem);
return 0;
}
/*
* The i810/i830 requires a physical address to program its mouse
* pointer into hardware.
* However the Xserver still writes to it through the agp aperture.
*/
static struct agp_memory *alloc_agpphysmem_i8xx(size_t pg_count, int type)
{
struct agp_memory *new;
void *addr;
if (pg_count != 1 && pg_count != 4)
return NULL;
switch (pg_count) {
case 1: addr = agp_bridge->driver->agp_alloc_page(agp_bridge);
global_flush_tlb();
break;
case 4:
/* kludge to get 4 physical pages for ARGB cursor */
addr = i8xx_alloc_pages();
break;
default:
return NULL;
}
if (addr == NULL)
return NULL;
new = agp_create_memory(pg_count);
if (new == NULL)
return NULL;
new->memory[0] = virt_to_gart(addr);
if (pg_count == 4) {
/* kludge to get 4 physical pages for ARGB cursor */
new->memory[1] = new->memory[0] + PAGE_SIZE;
new->memory[2] = new->memory[1] + PAGE_SIZE;
new->memory[3] = new->memory[2] + PAGE_SIZE;
}
new->page_count = pg_count;
new->num_scratch_pages = pg_count;
new->type = AGP_PHYS_MEMORY;
new->physical = new->memory[0];
return new;
}
static struct agp_memory *intel_i810_alloc_by_type(size_t pg_count, int type)
{
struct agp_memory *new;
if (type == AGP_DCACHE_MEMORY) {
if (pg_count != intel_i810_private.num_dcache_entries)
return NULL;
new = agp_create_memory(1);
if (new == NULL)
return NULL;
new->type = AGP_DCACHE_MEMORY;
new->page_count = pg_count;
new->num_scratch_pages = 0;
vfree(new->memory);
return new;
}
if (type == AGP_PHYS_MEMORY)
return alloc_agpphysmem_i8xx(pg_count, type);
return NULL;
}
static void intel_i810_free_by_type(struct agp_memory *curr)
{
agp_free_key(curr->key);
if (curr->type == AGP_PHYS_MEMORY) {
if (curr->page_count == 4)
i8xx_destroy_pages(gart_to_virt(curr->memory[0]));
else {
agp_bridge->driver->agp_destroy_page(
gart_to_virt(curr->memory[0]));
global_flush_tlb();
}
vfree(curr->memory);
}
kfree(curr);
}
static unsigned long intel_i810_mask_memory(struct agp_bridge_data *bridge,
unsigned long addr, int type)
{
/* Type checking must be done elsewhere */
return addr | bridge->driver->masks[type].mask;
}
static struct aper_size_info_fixed intel_i830_sizes[] =
{
{128, 32768, 5},
/* The 64M mode still requires a 128k gatt */
{64, 16384, 5},
{256, 65536, 6},
{512, 131072, 7},
};
static struct _intel_i830_private {
struct pci_dev *i830_dev; /* device one */
volatile u8 __iomem *registers;
volatile u32 __iomem *gtt; /* I915G */
/* gtt_entries is the number of gtt entries that are already mapped
* to stolen memory. Stolen memory is larger than the memory mapped
* through gtt_entries, as it includes some reserved space for the BIOS
* popup and for the GTT.
*/
int gtt_entries;
} intel_i830_private;
static void intel_i830_init_gtt_entries(void)
{
u16 gmch_ctrl;
int gtt_entries;
u8 rdct;
int local = 0;
static const int ddt[4] = { 0, 16, 32, 64 };
int size; /* reserved space (in kb) at the top of stolen memory */
pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
if (IS_I965) {
u32 pgetbl_ctl;
pci_read_config_dword(agp_bridge->dev, I810_PGETBL_CTL,
&pgetbl_ctl);
/* The 965 has a field telling us the size of the GTT,
* which may be larger than what is necessary to map the
* aperture.
*/
switch (pgetbl_ctl & I965_PGETBL_SIZE_MASK) {
case I965_PGETBL_SIZE_128KB:
size = 128;
break;
case I965_PGETBL_SIZE_256KB:
size = 256;
break;
case I965_PGETBL_SIZE_512KB:
size = 512;
break;
default:
printk(KERN_INFO PFX "Unknown page table size, "
"assuming 512KB\n");
size = 512;
}
size += 4; /* add in BIOS popup space */
} else {
/* On previous hardware, the GTT size was just what was
* required to map the aperture.
*/
size = agp_bridge->driver->fetch_size() + 4;
}
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82830_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) {
switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
case I830_GMCH_GMS_STOLEN_512:
gtt_entries = KB(512) - KB(size);
break;
case I830_GMCH_GMS_STOLEN_1024:
gtt_entries = MB(1) - KB(size);
break;
case I830_GMCH_GMS_STOLEN_8192:
gtt_entries = MB(8) - KB(size);
break;
case I830_GMCH_GMS_LOCAL:
rdct = readb(intel_i830_private.registers+I830_RDRAM_CHANNEL_TYPE);
gtt_entries = (I830_RDRAM_ND(rdct) + 1) *
MB(ddt[I830_RDRAM_DDT(rdct)]);
local = 1;
break;
default:
gtt_entries = 0;
break;
}
} else {
switch (gmch_ctrl & I830_GMCH_GMS_MASK) {
case I855_GMCH_GMS_STOLEN_1M:
gtt_entries = MB(1) - KB(size);
break;
case I855_GMCH_GMS_STOLEN_4M:
gtt_entries = MB(4) - KB(size);
break;
case I855_GMCH_GMS_STOLEN_8M:
gtt_entries = MB(8) - KB(size);
break;
case I855_GMCH_GMS_STOLEN_16M:
gtt_entries = MB(16) - KB(size);
break;
case I855_GMCH_GMS_STOLEN_32M:
gtt_entries = MB(32) - KB(size);
break;
case I915_GMCH_GMS_STOLEN_48M:
/* Check it's really I915G */
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965 )
gtt_entries = MB(48) - KB(size);
else
gtt_entries = 0;
break;
case I915_GMCH_GMS_STOLEN_64M:
/* Check it's really I915G */
if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915G_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945G_HB ||
agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_82945GM_HB || IS_I965)
gtt_entries = MB(64) - KB(size);
else
gtt_entries = 0;
default:
gtt_entries = 0;
break;
}
}
if (gtt_entries > 0)
printk(KERN_INFO PFX "Detected %dK %s memory.\n",
gtt_entries / KB(1), local ? "local" : "stolen");
else
printk(KERN_INFO PFX
"No pre-allocated video memory detected.\n");
gtt_entries /= KB(4);
intel_i830_private.gtt_entries = gtt_entries;
}
/* The intel i830 automatically initializes the agp aperture during POST.
* Use the memory already set aside for in the GTT.
*/
static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
{
int page_order;
struct aper_size_info_fixed *size;
int num_entries;
u32 temp;
size = agp_bridge->current_size;
page_order = size->page_order;
num_entries = size->num_entries;
agp_bridge->gatt_table_real = NULL;
pci_read_config_dword(intel_i830_private.i830_dev,I810_MMADDR,&temp);
temp &= 0xfff80000;
intel_i830_private.registers = ioremap(temp,128 * 4096);
if (!intel_i830_private.registers)
return -ENOMEM;
temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
global_cache_flush(); /* FIXME: ?? */
/* we have to call this as early as possible after the MMIO base address is known */
intel_i830_init_gtt_entries();
agp_bridge->gatt_table = NULL;
agp_bridge->gatt_bus_addr = temp;
return 0;
}
/* Return the gatt table to a sane state. Use the top of stolen
* memory for the GTT.
*/
static int intel_i830_free_gatt_table(struct agp_bridge_data *bridge)
{
return 0;
}
static int intel_i830_fetch_size(void)
{
u16 gmch_ctrl;
struct aper_size_info_fixed *values;
values = A_SIZE_FIX(agp_bridge->driver->aperture_sizes);
if (agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82830_HB &&
agp_bridge->dev->device != PCI_DEVICE_ID_INTEL_82845G_HB) {
/* 855GM/852GM/865G has 128MB aperture size */
agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
agp_bridge->aperture_size_idx = 0;
return values[0].size;
}
pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
if ((gmch_ctrl & I830_GMCH_MEM_MASK) == I830_GMCH_MEM_128M) {
agp_bridge->previous_size = agp_bridge->current_size = (void *) values;
agp_bridge->aperture_size_idx = 0;
return values[0].size;
} else {
agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + 1);
agp_bridge->aperture_size_idx = 1;
return values[1].size;
}
return 0;
}
static int intel_i830_configure(void)
{
struct aper_size_info_fixed *current_size;
u32 temp;
u16 gmch_ctrl;
int i;
current_size = A_SIZE_FIX(agp_bridge->current_size);
pci_read_config_dword(intel_i830_private.i830_dev,I810_GMADDR,&temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
gmch_ctrl |= I830_GMCH_ENABLED;
pci_write_config_word(agp_bridge->dev,I830_GMCH_CTRL,gmch_ctrl);
writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_i830_private.registers+I810_PGETBL_CTL);
readl(intel_i830_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
if (agp_bridge->driver->needs_scratch_page) {
for (i = intel_i830_private.gtt_entries; i < current_size->num_entries; i++) {
writel(agp_bridge->scratch_page, intel_i830_private.registers+I810_PTE_BASE+(i*4));
readl(intel_i830_private.registers+I810_PTE_BASE+(i*4)); /* PCI Posting. */
}
}
global_cache_flush();
return 0;
}
static void intel_i830_cleanup(void)
{
iounmap(intel_i830_private.registers);
}
static int intel_i830_insert_entries(struct agp_memory *mem,off_t pg_start, int type)
{
int i,j,num_entries;
void *temp;
if (mem->page_count == 0)
return 0;
temp = agp_bridge->current_size;
num_entries = A_SIZE_FIX(temp)->num_entries;
if (pg_start < intel_i830_private.gtt_entries) {
printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_i830_private.gtt_entries == 0x%.8x\n",
pg_start,intel_i830_private.gtt_entries);
printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
return -EINVAL;
}
if ((pg_start + mem->page_count) > num_entries)
return -EINVAL;
/* The i830 can't check the GTT for entries since its read only,
* depend on the caller to make the correct offset decisions.
*/
if ((type != 0 && type != AGP_PHYS_MEMORY) ||
(mem->type != 0 && mem->type != AGP_PHYS_MEMORY))
return -EINVAL;
if (!mem->is_flushed) {
global_cache_flush();
mem->is_flushed = TRUE;
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
mem->memory[i], mem->type),
intel_i830_private.registers+I810_PTE_BASE+(j*4));
}
readl(intel_i830_private.registers+I810_PTE_BASE+((j-1)*4));
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static int intel_i830_remove_entries(struct agp_memory *mem,off_t pg_start,
int type)
{
int i;
if (mem->page_count == 0)
return 0;
if (pg_start < intel_i830_private.gtt_entries) {
printk (KERN_INFO PFX "Trying to disable local/stolen memory\n");
return -EINVAL;
}
for (i = pg_start; i < (mem->page_count + pg_start); i++) {
writel(agp_bridge->scratch_page, intel_i830_private.registers+I810_PTE_BASE+(i*4));
}
readl(intel_i830_private.registers+I810_PTE_BASE+((i-1)*4));
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static struct agp_memory *intel_i830_alloc_by_type(size_t pg_count,int type)
{
if (type == AGP_PHYS_MEMORY)
return alloc_agpphysmem_i8xx(pg_count, type);
/* always return NULL for other allocation types for now */
return NULL;
}
static int intel_i915_configure(void)
{
struct aper_size_info_fixed *current_size;
u32 temp;
u16 gmch_ctrl;
int i;
current_size = A_SIZE_FIX(agp_bridge->current_size);
pci_read_config_dword(intel_i830_private.i830_dev, I915_GMADDR, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
pci_read_config_word(agp_bridge->dev,I830_GMCH_CTRL,&gmch_ctrl);
gmch_ctrl |= I830_GMCH_ENABLED;
pci_write_config_word(agp_bridge->dev,I830_GMCH_CTRL,gmch_ctrl);
writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_i830_private.registers+I810_PGETBL_CTL);
readl(intel_i830_private.registers+I810_PGETBL_CTL); /* PCI Posting. */
if (agp_bridge->driver->needs_scratch_page) {
for (i = intel_i830_private.gtt_entries; i < current_size->num_entries; i++) {
writel(agp_bridge->scratch_page, intel_i830_private.gtt+i);
readl(intel_i830_private.gtt+i); /* PCI Posting. */
}
}
global_cache_flush();
return 0;
}
static void intel_i915_cleanup(void)
{
iounmap(intel_i830_private.gtt);
iounmap(intel_i830_private.registers);
}
static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
int type)
{
int i,j,num_entries;
void *temp;
if (mem->page_count == 0)
return 0;
temp = agp_bridge->current_size;
num_entries = A_SIZE_FIX(temp)->num_entries;
if (pg_start < intel_i830_private.gtt_entries) {
printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_i830_private.gtt_entries == 0x%.8x\n",
pg_start,intel_i830_private.gtt_entries);
printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
return -EINVAL;
}
if ((pg_start + mem->page_count) > num_entries)
return -EINVAL;
/* The i830 can't check the GTT for entries since its read only,
* depend on the caller to make the correct offset decisions.
*/
if ((type != 0 && type != AGP_PHYS_MEMORY) ||
(mem->type != 0 && mem->type != AGP_PHYS_MEMORY))
return -EINVAL;
if (!mem->is_flushed) {
global_cache_flush();
mem->is_flushed = TRUE;
}
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
mem->memory[i], mem->type), intel_i830_private.gtt+j);
}
readl(intel_i830_private.gtt+j-1);
agp_bridge->driver->tlb_flush(mem);
return 0;
}
static int intel_i915_remove_entries(struct agp_memory *mem,off_t pg_start,
int type)
{
int i;
if (mem->page_count == 0)
return 0;
if (pg_start < intel_i830_private.gtt_entries) {
printk (KERN_INFO PFX "Trying to disable local/stolen memory\n");
return -EINVAL;
}
for (i = pg_start; i < (mem->page_count + pg_start); i++) {
writel(agp_bridge->scratch_page, intel_i830_private.gtt+i);
}
readl(intel_i830_private.gtt+i-1);
agp_bridge->driver->tlb_flush(mem);
return 0;
}
/* Return the aperture size by just checking the resource length. The effect
* described in the spec of the MSAC registers is just changing of the
* resource size.
*/
static int intel_i9xx_fetch_size(void)
{
int num_sizes = sizeof(intel_i830_sizes) / sizeof(*intel_i830_sizes);
int aper_size; /* size in megabytes */
int i;
aper_size = pci_resource_len(intel_i830_private.i830_dev, 2) / MB(1);
for (i = 0; i < num_sizes; i++) {
if (aper_size == intel_i830_sizes[i].size) {
agp_bridge->current_size = intel_i830_sizes + i;
agp_bridge->previous_size = agp_bridge->current_size;
return aper_size;
}
}
return 0;
}
/* The intel i915 automatically initializes the agp aperture during POST.
* Use the memory already set aside for in the GTT.
*/
static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
{
int page_order;
struct aper_size_info_fixed *size;
int num_entries;
u32 temp, temp2;
size = agp_bridge->current_size;
page_order = size->page_order;
num_entries = size->num_entries;
agp_bridge->gatt_table_real = NULL;
pci_read_config_dword(intel_i830_private.i830_dev, I915_MMADDR, &temp);
pci_read_config_dword(intel_i830_private.i830_dev, I915_PTEADDR,&temp2);
intel_i830_private.gtt = ioremap(temp2, 256 * 1024);
if (!intel_i830_private.gtt)
return -ENOMEM;
temp &= 0xfff80000;
intel_i830_private.registers = ioremap(temp,128 * 4096);
if (!intel_i830_private.registers)
return -ENOMEM;
temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
global_cache_flush(); /* FIXME: ? */
/* we have to call this as early as possible after the MMIO base address is known */
intel_i830_init_gtt_entries();
agp_bridge->gatt_table = NULL;
agp_bridge->gatt_bus_addr = temp;
return 0;
}
/*
* The i965 supports 36-bit physical addresses, but to keep
* the format of the GTT the same, the bits that don't fit
* in a 32-bit word are shifted down to bits 4..7.
*
* Gcc is smart enough to notice that "(addr >> 28) & 0xf0"
* is always zero on 32-bit architectures, so no need to make
* this conditional.
*/
static unsigned long intel_i965_mask_memory(struct agp_bridge_data *bridge,
unsigned long addr, int type)
{
/* Shift high bits down */
addr |= (addr >> 28) & 0xf0;
/* Type checking must be done elsewhere */
return addr | bridge->driver->masks[type].mask;
}
/* The intel i965 automatically initializes the agp aperture during POST.
* Use the memory already set aside for in the GTT.
*/
static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
{
int page_order;
struct aper_size_info_fixed *size;
int num_entries;
u32 temp;
size = agp_bridge->current_size;
page_order = size->page_order;
num_entries = size->num_entries;
agp_bridge->gatt_table_real = NULL;
pci_read_config_dword(intel_i830_private.i830_dev, I915_MMADDR, &temp);
temp &= 0xfff00000;
intel_i830_private.gtt = ioremap((temp + (512 * 1024)) , 512 * 1024);
if (!intel_i830_private.gtt)
return -ENOMEM;
intel_i830_private.registers = ioremap(temp,128 * 4096);
if (!intel_i830_private.registers)
return -ENOMEM;
temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
global_cache_flush(); /* FIXME: ? */
/* we have to call this as early as possible after the MMIO base address is known */
intel_i830_init_gtt_entries();
agp_bridge->gatt_table = NULL;
agp_bridge->gatt_bus_addr = temp;
return 0;
}
static int intel_fetch_size(void)
{
int i;
u16 temp;
struct aper_size_info_16 *values;
pci_read_config_word(agp_bridge->dev, INTEL_APSIZE, &temp);
values = A_SIZE_16(agp_bridge->driver->aperture_sizes);
for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
if (temp == values[i].size_value) {
agp_bridge->previous_size = agp_bridge->current_size = (void *) (values + i);
agp_bridge->aperture_size_idx = i;
return values[i].size;
}
}
return 0;
}
static int __intel_8xx_fetch_size(u8 temp)
{
int i;
struct aper_size_info_8 *values;
values = A_SIZE_8(agp_bridge->driver->aperture_sizes);
for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
if (temp == values[i].size_value) {
agp_bridge->previous_size =
agp_bridge->current_size = (void *) (values + i);
agp_bridge->aperture_size_idx = i;
return values[i].size;
}
}
return 0;
}
static int intel_8xx_fetch_size(void)
{
u8 temp;
pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
return __intel_8xx_fetch_size(temp);
}
static int intel_815_fetch_size(void)
{
u8 temp;
/* Intel 815 chipsets have a _weird_ APSIZE register with only
* one non-reserved bit, so mask the others out ... */
pci_read_config_byte(agp_bridge->dev, INTEL_APSIZE, &temp);
temp &= (1 << 3);
return __intel_8xx_fetch_size(temp);
}
static void intel_tlbflush(struct agp_memory *mem)
{
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2200);
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
}
static void intel_8xx_tlbflush(struct agp_memory *mem)
{
u32 temp;
pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp & ~(1 << 7));
pci_read_config_dword(agp_bridge->dev, INTEL_AGPCTRL, &temp);
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, temp | (1 << 7));
}
static void intel_cleanup(void)
{
u16 temp;
struct aper_size_info_16 *previous_size;
previous_size = A_SIZE_16(agp_bridge->previous_size);
pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
}
static void intel_8xx_cleanup(void)
{
u16 temp;
struct aper_size_info_8 *previous_size;
previous_size = A_SIZE_8(agp_bridge->previous_size);
pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp);
pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp & ~(1 << 9));
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, previous_size->size_value);
}
static int intel_configure(void)
{
u32 temp;
u16 temp2;
struct aper_size_info_16 *current_size;
current_size = A_SIZE_16(agp_bridge->current_size);
/* aperture size */
pci_write_config_word(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x2280);
/* paccfg/nbxcfg */
pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG,
(temp2 & ~(1 << 10)) | (1 << 9));
/* clear any possible error conditions */
pci_write_config_byte(agp_bridge->dev, INTEL_ERRSTS + 1, 7);
return 0;
}
static int intel_815_configure(void)
{
u32 temp, addr;
u8 temp2;
struct aper_size_info_8 *current_size;
/* attbase - aperture base */
/* the Intel 815 chipset spec. says that bits 29-31 in the
* ATTBASE register are reserved -> try not to write them */
if (agp_bridge->gatt_bus_addr & INTEL_815_ATTBASE_MASK) {
printk (KERN_EMERG PFX "gatt bus addr too high");
return -EINVAL;
}
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
pci_read_config_dword(agp_bridge->dev, INTEL_ATTBASE, &addr);
addr &= INTEL_815_ATTBASE_MASK;
addr |= agp_bridge->gatt_bus_addr;
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* apcont */
pci_read_config_byte(agp_bridge->dev, INTEL_815_APCONT, &temp2);
pci_write_config_byte(agp_bridge->dev, INTEL_815_APCONT, temp2 | (1 << 1));
/* clear any possible error conditions */
/* Oddness : this chipset seems to have no ERRSTS register ! */
return 0;
}
static void intel_820_tlbflush(struct agp_memory *mem)
{
return;
}
static void intel_820_cleanup(void)
{
u8 temp;
struct aper_size_info_8 *previous_size;
previous_size = A_SIZE_8(agp_bridge->previous_size);
pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp);
pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR,
temp & ~(1 << 1));
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE,
previous_size->size_value);
}
static int intel_820_configure(void)
{
u32 temp;
u8 temp2;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* global enable aperture access */
/* This flag is not accessed through MCHCFG register as in */
/* i850 chipset. */
pci_read_config_byte(agp_bridge->dev, INTEL_I820_RDCR, &temp2);
pci_write_config_byte(agp_bridge->dev, INTEL_I820_RDCR, temp2 | (1 << 1));
/* clear any possible AGP-related error conditions */
pci_write_config_word(agp_bridge->dev, INTEL_I820_ERRSTS, 0x001c);
return 0;
}
static int intel_840_configure(void)
{
u32 temp;
u16 temp2;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* mcgcfg */
pci_read_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, &temp2);
pci_write_config_word(agp_bridge->dev, INTEL_I840_MCHCFG, temp2 | (1 << 9));
/* clear any possible error conditions */
pci_write_config_word(agp_bridge->dev, INTEL_I840_ERRSTS, 0xc000);
return 0;
}
static int intel_845_configure(void)
{
u32 temp;
u8 temp2;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
if (agp_bridge->apbase_config != 0) {
pci_write_config_dword(agp_bridge->dev, AGP_APBASE,
agp_bridge->apbase_config);
} else {
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
agp_bridge->apbase_config = temp;
}
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* agpm */
pci_read_config_byte(agp_bridge->dev, INTEL_I845_AGPM, &temp2);
pci_write_config_byte(agp_bridge->dev, INTEL_I845_AGPM, temp2 | (1 << 1));
/* clear any possible error conditions */
pci_write_config_word(agp_bridge->dev, INTEL_I845_ERRSTS, 0x001c);
return 0;
}
static int intel_850_configure(void)
{
u32 temp;
u16 temp2;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* mcgcfg */
pci_read_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, &temp2);
pci_write_config_word(agp_bridge->dev, INTEL_I850_MCHCFG, temp2 | (1 << 9));
/* clear any possible AGP-related error conditions */
pci_write_config_word(agp_bridge->dev, INTEL_I850_ERRSTS, 0x001c);
return 0;
}
static int intel_860_configure(void)
{
u32 temp;
u16 temp2;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* mcgcfg */
pci_read_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, &temp2);
pci_write_config_word(agp_bridge->dev, INTEL_I860_MCHCFG, temp2 | (1 << 9));
/* clear any possible AGP-related error conditions */
pci_write_config_word(agp_bridge->dev, INTEL_I860_ERRSTS, 0xf700);
return 0;
}
static int intel_830mp_configure(void)
{
u32 temp;
u16 temp2;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* gmch */
pci_read_config_word(agp_bridge->dev, INTEL_NBXCFG, &temp2);
pci_write_config_word(agp_bridge->dev, INTEL_NBXCFG, temp2 | (1 << 9));
/* clear any possible AGP-related error conditions */
pci_write_config_word(agp_bridge->dev, INTEL_I830_ERRSTS, 0x1c);
return 0;
}
static int intel_7505_configure(void)
{
u32 temp;
u16 temp2;
struct aper_size_info_8 *current_size;
current_size = A_SIZE_8(agp_bridge->current_size);
/* aperture size */
pci_write_config_byte(agp_bridge->dev, INTEL_APSIZE, current_size->size_value);
/* address to map to */
pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
/* attbase - aperture base */
pci_write_config_dword(agp_bridge->dev, INTEL_ATTBASE, agp_bridge->gatt_bus_addr);
/* agpctrl */
pci_write_config_dword(agp_bridge->dev, INTEL_AGPCTRL, 0x0000);
/* mchcfg */
pci_read_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, &temp2);
pci_write_config_word(agp_bridge->dev, INTEL_I7505_MCHCFG, temp2 | (1 << 9));
return 0;
}
/* Setup function */
static struct gatt_mask intel_generic_masks[] =
{
{.mask = 0x00000017, .type = 0}
};
static struct aper_size_info_8 intel_815_sizes[2] =
{
{64, 16384, 4, 0},
{32, 8192, 3, 8},
};
static struct aper_size_info_8 intel_8xx_sizes[7] =
{
{256, 65536, 6, 0},
{128, 32768, 5, 32},
{64, 16384, 4, 48},
{32, 8192, 3, 56},
{16, 4096, 2, 60},
{8, 2048, 1, 62},
{4, 1024, 0, 63}
};
static struct aper_size_info_16 intel_generic_sizes[7] =
{
{256, 65536, 6, 0},
{128, 32768, 5, 32},
{64, 16384, 4, 48},
{32, 8192, 3, 56},
{16, 4096, 2, 60},
{8, 2048, 1, 62},
{4, 1024, 0, 63}
};
static struct aper_size_info_8 intel_830mp_sizes[4] =
{
{256, 65536, 6, 0},
{128, 32768, 5, 32},
{64, 16384, 4, 48},
{32, 8192, 3, 56}
};
static struct agp_bridge_driver intel_generic_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_generic_sizes,
.size_type = U16_APER_SIZE,
.num_aperture_sizes = 7,
.configure = intel_configure,
.fetch_size = intel_fetch_size,
.cleanup = intel_cleanup,
.tlb_flush = intel_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_810_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_i810_sizes,
.size_type = FIXED_APER_SIZE,
.num_aperture_sizes = 2,
.needs_scratch_page = TRUE,
.configure = intel_i810_configure,
.fetch_size = intel_i810_fetch_size,
.cleanup = intel_i810_cleanup,
.tlb_flush = intel_i810_tlbflush,
.mask_memory = intel_i810_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_i810_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = intel_i810_insert_entries,
.remove_memory = intel_i810_remove_entries,
.alloc_by_type = intel_i810_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_815_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_815_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 2,
.configure = intel_815_configure,
.fetch_size = intel_815_fetch_size,
.cleanup = intel_8xx_cleanup,
.tlb_flush = intel_8xx_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_830_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_i830_sizes,
.size_type = FIXED_APER_SIZE,
.num_aperture_sizes = 4,
.needs_scratch_page = TRUE,
.configure = intel_i830_configure,
.fetch_size = intel_i830_fetch_size,
.cleanup = intel_i830_cleanup,
.tlb_flush = intel_i810_tlbflush,
.mask_memory = intel_i810_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_i810_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_i830_create_gatt_table,
.free_gatt_table = intel_i830_free_gatt_table,
.insert_memory = intel_i830_insert_entries,
.remove_memory = intel_i830_remove_entries,
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_820_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_8xx_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 7,
.configure = intel_820_configure,
.fetch_size = intel_8xx_fetch_size,
.cleanup = intel_820_cleanup,
.tlb_flush = intel_820_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_830mp_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_830mp_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 4,
.configure = intel_830mp_configure,
.fetch_size = intel_8xx_fetch_size,
.cleanup = intel_8xx_cleanup,
.tlb_flush = intel_8xx_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_840_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_8xx_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 7,
.configure = intel_840_configure,
.fetch_size = intel_8xx_fetch_size,
.cleanup = intel_8xx_cleanup,
.tlb_flush = intel_8xx_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_845_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_8xx_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 7,
.configure = intel_845_configure,
.fetch_size = intel_8xx_fetch_size,
.cleanup = intel_8xx_cleanup,
.tlb_flush = intel_8xx_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_850_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_8xx_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 7,
.configure = intel_850_configure,
.fetch_size = intel_8xx_fetch_size,
.cleanup = intel_8xx_cleanup,
.tlb_flush = intel_8xx_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_860_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_8xx_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 7,
.configure = intel_860_configure,
.fetch_size = intel_8xx_fetch_size,
.cleanup = intel_8xx_cleanup,
.tlb_flush = intel_8xx_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_915_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_i830_sizes,
.size_type = FIXED_APER_SIZE,
.num_aperture_sizes = 4,
.needs_scratch_page = TRUE,
.configure = intel_i915_configure,
.fetch_size = intel_i9xx_fetch_size,
.cleanup = intel_i915_cleanup,
.tlb_flush = intel_i810_tlbflush,
.mask_memory = intel_i810_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_i810_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_i915_create_gatt_table,
.free_gatt_table = intel_i830_free_gatt_table,
.insert_memory = intel_i915_insert_entries,
.remove_memory = intel_i915_remove_entries,
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_i965_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_i830_sizes,
.size_type = FIXED_APER_SIZE,
.num_aperture_sizes = 4,
.needs_scratch_page = TRUE,
.configure = intel_i915_configure,
.fetch_size = intel_i9xx_fetch_size,
.cleanup = intel_i915_cleanup,
.tlb_flush = intel_i810_tlbflush,
.mask_memory = intel_i965_mask_memory,
.masks = intel_i810_masks,
.agp_enable = intel_i810_agp_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = intel_i965_create_gatt_table,
.free_gatt_table = intel_i830_free_gatt_table,
.insert_memory = intel_i915_insert_entries,
.remove_memory = intel_i915_remove_entries,
.alloc_by_type = intel_i830_alloc_by_type,
.free_by_type = intel_i810_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static struct agp_bridge_driver intel_7505_driver = {
.owner = THIS_MODULE,
.aperture_sizes = intel_8xx_sizes,
.size_type = U8_APER_SIZE,
.num_aperture_sizes = 7,
.configure = intel_7505_configure,
.fetch_size = intel_8xx_fetch_size,
.cleanup = intel_8xx_cleanup,
.tlb_flush = intel_8xx_tlbflush,
.mask_memory = agp_generic_mask_memory,
.masks = intel_generic_masks,
.agp_enable = agp_generic_enable,
.cache_flush = global_cache_flush,
.create_gatt_table = agp_generic_create_gatt_table,
.free_gatt_table = agp_generic_free_gatt_table,
.insert_memory = agp_generic_insert_memory,
.remove_memory = agp_generic_remove_memory,
.alloc_by_type = agp_generic_alloc_by_type,
.free_by_type = agp_generic_free_by_type,
.agp_alloc_page = agp_generic_alloc_page,
.agp_destroy_page = agp_generic_destroy_page,
};
static int find_i810(u16 device)
{
struct pci_dev *i810_dev;
i810_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
if (!i810_dev)
return 0;
intel_i810_private.i810_dev = i810_dev;
return 1;
}
static int find_i830(u16 device)
{
struct pci_dev *i830_dev;
i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
if (i830_dev && PCI_FUNC(i830_dev->devfn) != 0) {
i830_dev = pci_get_device(PCI_VENDOR_ID_INTEL,
device, i830_dev);
}
if (!i830_dev)
return 0;
intel_i830_private.i830_dev = i830_dev;
return 1;
}
static int __devinit agp_intel_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
struct agp_bridge_data *bridge;
char *name = "(unknown)";
u8 cap_ptr = 0;
struct resource *r;
cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
bridge = agp_alloc_bridge();
if (!bridge)
return -ENOMEM;
switch (pdev->device) {
case PCI_DEVICE_ID_INTEL_82443LX_0:
bridge->driver = &intel_generic_driver;
name = "440LX";
break;
case PCI_DEVICE_ID_INTEL_82443BX_0:
bridge->driver = &intel_generic_driver;
name = "440BX";
break;
case PCI_DEVICE_ID_INTEL_82443GX_0:
bridge->driver = &intel_generic_driver;
name = "440GX";
break;
case PCI_DEVICE_ID_INTEL_82810_MC1:
name = "i810";
if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG1))
goto fail;
bridge->driver = &intel_810_driver;
break;
case PCI_DEVICE_ID_INTEL_82810_MC3:
name = "i810 DC100";
if (!find_i810(PCI_DEVICE_ID_INTEL_82810_IG3))
goto fail;
bridge->driver = &intel_810_driver;
break;
case PCI_DEVICE_ID_INTEL_82810E_MC:
name = "i810 E";
if (!find_i810(PCI_DEVICE_ID_INTEL_82810E_IG))
goto fail;
bridge->driver = &intel_810_driver;
break;
case PCI_DEVICE_ID_INTEL_82815_MC:
/*
* The i815 can operate either as an i810 style
* integrated device, or as an AGP4X motherboard.
*/
if (find_i810(PCI_DEVICE_ID_INTEL_82815_CGC))
bridge->driver = &intel_810_driver;
else
bridge->driver = &intel_815_driver;
name = "i815";
break;
case PCI_DEVICE_ID_INTEL_82820_HB:
case PCI_DEVICE_ID_INTEL_82820_UP_HB:
bridge->driver = &intel_820_driver;
name = "i820";
break;
case PCI_DEVICE_ID_INTEL_82830_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82830_CGC))
bridge->driver = &intel_830_driver;
else
bridge->driver = &intel_830mp_driver;
name = "830M";
break;
case PCI_DEVICE_ID_INTEL_82840_HB:
bridge->driver = &intel_840_driver;
name = "i840";
break;
case PCI_DEVICE_ID_INTEL_82845_HB:
bridge->driver = &intel_845_driver;
name = "i845";
break;
case PCI_DEVICE_ID_INTEL_82845G_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82845G_IG))
bridge->driver = &intel_830_driver;
else
bridge->driver = &intel_845_driver;
name = "845G";
break;
case PCI_DEVICE_ID_INTEL_82850_HB:
bridge->driver = &intel_850_driver;
name = "i850";
break;
case PCI_DEVICE_ID_INTEL_82855PM_HB:
bridge->driver = &intel_845_driver;
name = "855PM";
break;
case PCI_DEVICE_ID_INTEL_82855GM_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82855GM_IG)) {
bridge->driver = &intel_830_driver;
name = "855";
} else {
bridge->driver = &intel_845_driver;
name = "855GM";
}
break;
case PCI_DEVICE_ID_INTEL_82860_HB:
bridge->driver = &intel_860_driver;
name = "i860";
break;
case PCI_DEVICE_ID_INTEL_82865_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82865_IG))
bridge->driver = &intel_830_driver;
else
bridge->driver = &intel_845_driver;
name = "865";
break;
case PCI_DEVICE_ID_INTEL_82875_HB:
bridge->driver = &intel_845_driver;
name = "i875";
break;
case PCI_DEVICE_ID_INTEL_82915G_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82915G_IG))
bridge->driver = &intel_915_driver;
else
bridge->driver = &intel_845_driver;
name = "915G";
break;
case PCI_DEVICE_ID_INTEL_82915GM_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82915GM_IG))
bridge->driver = &intel_915_driver;
else
bridge->driver = &intel_845_driver;
name = "915GM";
break;
case PCI_DEVICE_ID_INTEL_82945G_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82945G_IG))
bridge->driver = &intel_915_driver;
else
bridge->driver = &intel_845_driver;
name = "945G";
break;
case PCI_DEVICE_ID_INTEL_82945GM_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82945GM_IG))
bridge->driver = &intel_915_driver;
else
bridge->driver = &intel_845_driver;
name = "945GM";
break;
case PCI_DEVICE_ID_INTEL_82946GZ_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82946GZ_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "946GZ";
break;
case PCI_DEVICE_ID_INTEL_82965G_1_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82965G_1_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "965G";
break;
case PCI_DEVICE_ID_INTEL_82965Q_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82965Q_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "965Q";
break;
case PCI_DEVICE_ID_INTEL_82965G_HB:
if (find_i830(PCI_DEVICE_ID_INTEL_82965G_IG))
bridge->driver = &intel_i965_driver;
else
bridge->driver = &intel_845_driver;
name = "965G";
break;
case PCI_DEVICE_ID_INTEL_7505_0:
bridge->driver = &intel_7505_driver;
name = "E7505";
break;
case PCI_DEVICE_ID_INTEL_7205_0:
bridge->driver = &intel_7505_driver;
name = "E7205";
break;
default:
if (cap_ptr)
printk(KERN_WARNING PFX "Unsupported Intel chipset (device id: %04x)\n",
pdev->device);
agp_put_bridge(bridge);
return -ENODEV;
};
bridge->dev = pdev;
bridge->capndx = cap_ptr;
if (bridge->driver == &intel_810_driver)
bridge->dev_private_data = &intel_i810_private;
else if (bridge->driver == &intel_830_driver)
bridge->dev_private_data = &intel_i830_private;
printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n", name);
/*
* The following fixes the case where the BIOS has "forgotten" to
* provide an address range for the GART.
* 20030610 - hamish@zot.org
*/
r = &pdev->resource[0];
if (!r->start && r->end) {
if (pci_assign_resource(pdev, 0)) {
printk(KERN_ERR PFX "could not assign resource 0\n");
agp_put_bridge(bridge);
return -ENODEV;
}
}
/*
* If the device has not been properly setup, the following will catch
* the problem and should stop the system from crashing.
* 20030610 - hamish@zot.org
*/
if (pci_enable_device(pdev)) {
printk(KERN_ERR PFX "Unable to Enable PCI device\n");
agp_put_bridge(bridge);
return -ENODEV;
}
/* Fill in the mode register */
if (cap_ptr) {
pci_read_config_dword(pdev,
bridge->capndx+PCI_AGP_STATUS,
&bridge->mode);
}
pci_set_drvdata(pdev, bridge);
return agp_add_bridge(bridge);
fail:
printk(KERN_ERR PFX "Detected an Intel %s chipset, "
"but could not find the secondary device.\n", name);
agp_put_bridge(bridge);
return -ENODEV;
}
static void __devexit agp_intel_remove(struct pci_dev *pdev)
{
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
agp_remove_bridge(bridge);
if (intel_i810_private.i810_dev)
pci_dev_put(intel_i810_private.i810_dev);
if (intel_i830_private.i830_dev)
pci_dev_put(intel_i830_private.i830_dev);
agp_put_bridge(bridge);
}
#ifdef CONFIG_PM
static int agp_intel_resume(struct pci_dev *pdev)
{
struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
pci_restore_state(pdev);
if (bridge->driver == &intel_generic_driver)
intel_configure();
else if (bridge->driver == &intel_850_driver)
intel_850_configure();
else if (bridge->driver == &intel_845_driver)
intel_845_configure();
else if (bridge->driver == &intel_830mp_driver)
intel_830mp_configure();
else if (bridge->driver == &intel_915_driver)
intel_i915_configure();
else if (bridge->driver == &intel_830_driver)
intel_i830_configure();
else if (bridge->driver == &intel_810_driver)
intel_i810_configure();
else if (bridge->driver == &intel_i965_driver)
intel_i915_configure();
return 0;
}
#endif
static struct pci_device_id agp_intel_pci_table[] = {
#define ID(x) \
{ \
.class = (PCI_CLASS_BRIDGE_HOST << 8), \
.class_mask = ~0, \
.vendor = PCI_VENDOR_ID_INTEL, \
.device = x, \
.subvendor = PCI_ANY_ID, \
.subdevice = PCI_ANY_ID, \
}
ID(PCI_DEVICE_ID_INTEL_82443LX_0),
ID(PCI_DEVICE_ID_INTEL_82443BX_0),
ID(PCI_DEVICE_ID_INTEL_82443GX_0),
ID(PCI_DEVICE_ID_INTEL_82810_MC1),
ID(PCI_DEVICE_ID_INTEL_82810_MC3),
ID(PCI_DEVICE_ID_INTEL_82810E_MC),
ID(PCI_DEVICE_ID_INTEL_82815_MC),
ID(PCI_DEVICE_ID_INTEL_82820_HB),
ID(PCI_DEVICE_ID_INTEL_82820_UP_HB),
ID(PCI_DEVICE_ID_INTEL_82830_HB),
ID(PCI_DEVICE_ID_INTEL_82840_HB),
ID(PCI_DEVICE_ID_INTEL_82845_HB),
ID(PCI_DEVICE_ID_INTEL_82845G_HB),
ID(PCI_DEVICE_ID_INTEL_82850_HB),
ID(PCI_DEVICE_ID_INTEL_82855PM_HB),
ID(PCI_DEVICE_ID_INTEL_82855GM_HB),
ID(PCI_DEVICE_ID_INTEL_82860_HB),
ID(PCI_DEVICE_ID_INTEL_82865_HB),
ID(PCI_DEVICE_ID_INTEL_82875_HB),
ID(PCI_DEVICE_ID_INTEL_7505_0),
ID(PCI_DEVICE_ID_INTEL_7205_0),
ID(PCI_DEVICE_ID_INTEL_82915G_HB),
ID(PCI_DEVICE_ID_INTEL_82915GM_HB),
ID(PCI_DEVICE_ID_INTEL_82945G_HB),
ID(PCI_DEVICE_ID_INTEL_82945GM_HB),
ID(PCI_DEVICE_ID_INTEL_82946GZ_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_1_HB),
ID(PCI_DEVICE_ID_INTEL_82965Q_HB),
ID(PCI_DEVICE_ID_INTEL_82965G_HB),
{ }
};
MODULE_DEVICE_TABLE(pci, agp_intel_pci_table);
static struct pci_driver agp_intel_pci_driver = {
.name = "agpgart-intel",
.id_table = agp_intel_pci_table,
.probe = agp_intel_probe,
.remove = __devexit_p(agp_intel_remove),
#ifdef CONFIG_PM
.resume = agp_intel_resume,
#endif
};
static int __init agp_intel_init(void)
{
if (agp_off)
return -EINVAL;
return pci_register_driver(&agp_intel_pci_driver);
}
static void __exit agp_intel_cleanup(void)
{
pci_unregister_driver(&agp_intel_pci_driver);
}
module_init(agp_intel_init);
module_exit(agp_intel_cleanup);
MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
MODULE_LICENSE("GPL and additional rights");
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