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Date: Wed, 30 May 2007 09:40:46 +0800
From: Wang Zhenyu <zhenyu.z.wang@...el.com>
To: Dave Jones <davej@...hat.com>
Cc: LKML <linux-kernel@...r.kernel.org>, Eric Anholt <eric@...olt.net>,
Keith Packard <keithp@...thp.com>
Subject: [resend] [AGPGART] intel_agp: cleanup intel private data
Remove volatile type declare for IO mem variables.
A single private gart data is used by all drivers, this
makes it clean. Eric Anholt wrote the original patch.
Signed-off-by: Wang Zhenyu <zhenyu.z.wang@...el.com>
---
drivers/char/agp/intel-agp.c | 195 ++++++++++++++++++++----------------------
1 files changed, 91 insertions(+), 104 deletions(-)
diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 9c69f2e..e12f579 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -86,11 +86,18 @@ static struct gatt_mask intel_i810_masks[] =
.type = INTEL_AGP_CACHED_MEMORY}
};
-static struct _intel_i810_private {
- struct pci_dev *i810_dev; /* device one */
- volatile u8 __iomem *registers;
+static struct _intel_private {
+ struct pci_dev *pcidev; /* device one */
+ u8 __iomem *registers;
+ u32 __iomem *gtt; /* I915G */
int num_dcache_entries;
-} intel_i810_private;
+ /* 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; /* i830+ */
+} intel_private;
static int intel_i810_fetch_size(void)
{
@@ -127,32 +134,32 @@ static int intel_i810_configure(void)
current_size = A_SIZE_FIX(agp_bridge->current_size);
- if (!intel_i810_private.registers) {
- pci_read_config_dword(intel_i810_private.i810_dev, I810_MMADDR, &temp);
+ if (!intel_private.registers) {
+ pci_read_config_dword(intel_private.pcidev, I810_MMADDR, &temp);
temp &= 0xfff80000;
- intel_i810_private.registers = ioremap(temp, 128 * 4096);
- if (!intel_i810_private.registers) {
+ intel_private.registers = ioremap(temp, 128 * 4096);
+ if (!intel_private.registers) {
printk(KERN_ERR PFX "Unable to remap memory.\n");
return -ENOMEM;
}
}
- if ((readl(intel_i810_private.registers+I810_DRAM_CTL)
+ if ((readl(intel_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;
+ intel_private.num_dcache_entries = 1024;
}
- pci_read_config_dword(intel_i810_private.i810_dev, I810_GMADDR, &temp);
+ pci_read_config_dword(intel_private.pcidev, 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. */
+ writel(agp_bridge->gatt_bus_addr | I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
+ readl(intel_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. */
+ writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
+ readl(intel_private.registers+I810_PTE_BASE+(i*4)); /* PCI posting. */
}
}
global_cache_flush();
@@ -161,9 +168,9 @@ static int intel_i810_configure(void)
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);
+ writel(0, intel_private.registers+I810_PGETBL_CTL);
+ readl(intel_private.registers); /* PCI Posting. */
+ iounmap(intel_private.registers);
}
static void intel_i810_tlbflush(struct agp_memory *mem)
@@ -261,9 +268,9 @@ static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
global_cache_flush();
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));
+ intel_private.registers+I810_PTE_BASE+(i*4));
}
- readl(intel_i810_private.registers+I810_PTE_BASE+((i-1)*4));
+ readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
break;
case AGP_PHYS_MEMORY:
case AGP_NORMAL_MEMORY:
@@ -273,9 +280,9 @@ static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start,
writel(agp_bridge->driver->mask_memory(agp_bridge,
mem->memory[i],
mask_type),
- intel_i810_private.registers+I810_PTE_BASE+(j*4));
+ intel_private.registers+I810_PTE_BASE+(j*4));
}
- readl(intel_i810_private.registers+I810_PTE_BASE+((j-1)*4));
+ readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
break;
default:
goto out_err;
@@ -298,9 +305,9 @@ static int intel_i810_remove_entries(struct agp_memory *mem, off_t pg_start,
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));
+ writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
}
- readl(intel_i810_private.registers+I810_PTE_BASE+((i-1)*4));
+ readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
agp_bridge->driver->tlb_flush(mem);
return 0;
@@ -354,7 +361,7 @@ 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)
+ if (pg_count != intel_private.num_dcache_entries)
return NULL;
new = agp_create_memory(1);
@@ -404,18 +411,6 @@ static struct aper_size_info_fixed intel_i830_sizes[] =
{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;
@@ -429,7 +424,7 @@ static void intel_i830_init_gtt_entries(void)
if (IS_I965) {
u32 pgetbl_ctl;
- pgetbl_ctl = readl(intel_i830_private.registers+I810_PGETBL_CTL);
+ pgetbl_ctl = readl(intel_private.registers+I810_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
@@ -471,7 +466,7 @@ static void intel_i830_init_gtt_entries(void)
gtt_entries = MB(8) - KB(size);
break;
case I830_GMCH_GMS_LOCAL:
- rdct = readb(intel_i830_private.registers+I830_RDRAM_CHANNEL_TYPE);
+ rdct = readb(intel_private.registers+I830_RDRAM_CHANNEL_TYPE);
gtt_entries = (I830_RDRAM_ND(rdct) + 1) *
MB(ddt[I830_RDRAM_DDT(rdct)]);
local = 1;
@@ -529,7 +524,7 @@ static void intel_i830_init_gtt_entries(void)
"No pre-allocated video memory detected.\n");
gtt_entries /= KB(4);
- intel_i830_private.gtt_entries = gtt_entries;
+ intel_private.gtt_entries = gtt_entries;
}
/* The intel i830 automatically initializes the agp aperture during POST.
@@ -547,14 +542,14 @@ static int intel_i830_create_gatt_table(struct agp_bridge_data *bridge)
num_entries = size->num_entries;
agp_bridge->gatt_table_real = NULL;
- pci_read_config_dword(intel_i830_private.i830_dev,I810_MMADDR,&temp);
+ pci_read_config_dword(intel_private.pcidev,I810_MMADDR,&temp);
temp &= 0xfff80000;
- intel_i830_private.registers = ioremap(temp,128 * 4096);
- if (!intel_i830_private.registers)
+ intel_private.registers = ioremap(temp,128 * 4096);
+ if (!intel_private.registers)
return -ENOMEM;
- temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
+ temp = readl(intel_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 */
@@ -614,20 +609,20 @@ static int intel_i830_configure(void)
current_size = A_SIZE_FIX(agp_bridge->current_size);
- pci_read_config_dword(intel_i830_private.i830_dev,I810_GMADDR,&temp);
+ pci_read_config_dword(intel_private.pcidev,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. */
+ writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
+ readl(intel_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. */
+ for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
+ writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
+ readl(intel_private.registers+I810_PTE_BASE+(i*4)); /* PCI Posting. */
}
}
@@ -637,7 +632,7 @@ static int intel_i830_configure(void)
static void intel_i830_cleanup(void)
{
- iounmap(intel_i830_private.registers);
+ iounmap(intel_private.registers);
}
static int intel_i830_insert_entries(struct agp_memory *mem,off_t pg_start, int type)
@@ -653,9 +648,9 @@ static int intel_i830_insert_entries(struct agp_memory *mem,off_t pg_start, int
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);
+ if (pg_start < intel_private.gtt_entries) {
+ printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
+ pg_start,intel_private.gtt_entries);
printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
goto out_err;
@@ -683,9 +678,9 @@ static int intel_i830_insert_entries(struct agp_memory *mem,off_t pg_start, int
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
mem->memory[i], mask_type),
- intel_i830_private.registers+I810_PTE_BASE+(j*4));
+ intel_private.registers+I810_PTE_BASE+(j*4));
}
- readl(intel_i830_private.registers+I810_PTE_BASE+((j-1)*4));
+ readl(intel_private.registers+I810_PTE_BASE+((j-1)*4));
agp_bridge->driver->tlb_flush(mem);
out:
@@ -703,15 +698,15 @@ static int intel_i830_remove_entries(struct agp_memory *mem,off_t pg_start,
if (mem->page_count == 0)
return 0;
- if (pg_start < intel_i830_private.gtt_entries) {
+ if (pg_start < intel_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));
+ writel(agp_bridge->scratch_page, intel_private.registers+I810_PTE_BASE+(i*4));
}
- readl(intel_i830_private.registers+I810_PTE_BASE+((i-1)*4));
+ readl(intel_private.registers+I810_PTE_BASE+((i-1)*4));
agp_bridge->driver->tlb_flush(mem);
return 0;
@@ -734,7 +729,7 @@ static int intel_i915_configure(void)
current_size = A_SIZE_FIX(agp_bridge->current_size);
- pci_read_config_dword(intel_i830_private.i830_dev, I915_GMADDR, &temp);
+ pci_read_config_dword(intel_private.pcidev, I915_GMADDR, &temp);
agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
@@ -742,13 +737,13 @@ static int intel_i915_configure(void)
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. */
+ writel(agp_bridge->gatt_bus_addr|I810_PGETBL_ENABLED, intel_private.registers+I810_PGETBL_CTL);
+ readl(intel_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. */
+ for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
+ writel(agp_bridge->scratch_page, intel_private.gtt+i);
+ readl(intel_private.gtt+i); /* PCI Posting. */
}
}
@@ -758,8 +753,8 @@ static int intel_i915_configure(void)
static void intel_i915_cleanup(void)
{
- iounmap(intel_i830_private.gtt);
- iounmap(intel_i830_private.registers);
+ iounmap(intel_private.gtt);
+ iounmap(intel_private.registers);
}
static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
@@ -776,9 +771,9 @@ static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
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);
+ if (pg_start < intel_private.gtt_entries) {
+ printk (KERN_DEBUG PFX "pg_start == 0x%.8lx,intel_private.gtt_entries == 0x%.8x\n",
+ pg_start,intel_private.gtt_entries);
printk (KERN_INFO PFX "Trying to insert into local/stolen memory\n");
goto out_err;
@@ -805,10 +800,10 @@ static int intel_i915_insert_entries(struct agp_memory *mem,off_t pg_start,
for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
writel(agp_bridge->driver->mask_memory(agp_bridge,
- mem->memory[i], mask_type), intel_i830_private.gtt+j);
+ mem->memory[i], mask_type), intel_private.gtt+j);
}
- readl(intel_i830_private.gtt+j-1);
+ readl(intel_private.gtt+j-1);
agp_bridge->driver->tlb_flush(mem);
out:
@@ -826,15 +821,15 @@ static int intel_i915_remove_entries(struct agp_memory *mem,off_t pg_start,
if (mem->page_count == 0)
return 0;
- if (pg_start < intel_i830_private.gtt_entries) {
+ if (pg_start < intel_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);
+ writel(agp_bridge->scratch_page, intel_private.gtt+i);
}
- readl(intel_i830_private.gtt+i-1);
+ readl(intel_private.gtt+i-1);
agp_bridge->driver->tlb_flush(mem);
return 0;
@@ -850,7 +845,7 @@ static int intel_i9xx_fetch_size(void)
int aper_size; /* size in megabytes */
int i;
- aper_size = pci_resource_len(intel_i830_private.i830_dev, 2) / MB(1);
+ aper_size = pci_resource_len(intel_private.pcidev, 2) / MB(1);
for (i = 0; i < num_sizes; i++) {
if (aper_size == intel_i830_sizes[i].size) {
@@ -878,20 +873,20 @@ static int intel_i915_create_gatt_table(struct agp_bridge_data *bridge)
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);
+ pci_read_config_dword(intel_private.pcidev, I915_MMADDR, &temp);
+ pci_read_config_dword(intel_private.pcidev, I915_PTEADDR,&temp2);
- intel_i830_private.gtt = ioremap(temp2, 256 * 1024);
- if (!intel_i830_private.gtt)
+ intel_private.gtt = ioremap(temp2, 256 * 1024);
+ if (!intel_private.gtt)
return -ENOMEM;
temp &= 0xfff80000;
- intel_i830_private.registers = ioremap(temp,128 * 4096);
- if (!intel_i830_private.registers)
+ intel_private.registers = ioremap(temp,128 * 4096);
+ if (!intel_private.registers)
return -ENOMEM;
- temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
+ temp = readl(intel_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 */
@@ -938,20 +933,20 @@ static int intel_i965_create_gatt_table(struct agp_bridge_data *bridge)
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_private.pcidev, I915_MMADDR, &temp);
temp &= 0xfff00000;
- intel_i830_private.gtt = ioremap((temp + (512 * 1024)) , 512 * 1024);
+ intel_private.gtt = ioremap((temp + (512 * 1024)) , 512 * 1024);
- if (!intel_i830_private.gtt)
+ if (!intel_private.gtt)
return -ENOMEM;
- intel_i830_private.registers = ioremap(temp,128 * 4096);
- if (!intel_i830_private.registers)
+ intel_private.registers = ioremap(temp,128 * 4096);
+ if (!intel_private.registers)
return -ENOMEM;
- temp = readl(intel_i830_private.registers+I810_PGETBL_CTL) & 0xfffff000;
+ temp = readl(intel_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 */
@@ -1729,7 +1724,7 @@ static int find_i810(u16 device)
i810_dev = pci_get_device(PCI_VENDOR_ID_INTEL, device, NULL);
if (!i810_dev)
return 0;
- intel_i810_private.i810_dev = i810_dev;
+ intel_private.pcidev = i810_dev;
return 1;
}
@@ -1746,7 +1741,7 @@ static int find_i830(u16 device)
if (!i830_dev)
return 0;
- intel_i830_private.i830_dev = i830_dev;
+ intel_private.pcidev = i830_dev;
return 1;
}
@@ -1946,11 +1941,7 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev,
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;
+ bridge->dev_private_data = &intel_private;
printk(KERN_INFO PFX "Detected an Intel %s Chipset.\n", name);
@@ -2002,10 +1993,8 @@ static void __devexit agp_intel_remove(struct pci_dev *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);
+ if (intel_private.pcidev)
+ pci_dev_put(intel_private.pcidev);
agp_put_bridge(bridge);
}
@@ -2021,10 +2010,8 @@ static int agp_intel_resume(struct pci_dev *pdev)
* as host bridge (00:00) resumes before graphics device (02:00),
* then our access to its pci space can work right.
*/
- if (intel_i810_private.i810_dev)
- pci_restore_state(intel_i810_private.i810_dev);
- if (intel_i830_private.i830_dev)
- pci_restore_state(intel_i830_private.i830_dev);
+ if (intel_private.pcidev)
+ pci_restore_state(intel_private.pcidev);
if (bridge->driver == &intel_generic_driver)
intel_configure();
--
1.4.4.4
-
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