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authorChristian König <christian.koenig@amd.com>2014-06-05 23:56:50 -0400
committerAlex Deucher <alexander.deucher@amd.com>2014-06-09 22:06:54 -0400
commit4510fb985d3c3c5dae4d66af0fbbf95cc0662f35 (patch)
tree6bd9b76c16c5879d79125ef402a7b2507f12f0b0 /drivers/gpu
parentc1c4413258e46aef9c27696052a5b7110bdf2941 (diff)
downloadlinux-stericsson-4510fb985d3c3c5dae4d66af0fbbf95cc0662f35.tar.gz
drm/radeon: make vm_block_size a module parameter
Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/cik.c2
-rw-r--r--drivers/gpu/drm/radeon/ni.c2
-rw-r--r--drivers/gpu/drm/radeon/radeon.h8
-rw-r--r--drivers/gpu/drm/radeon/radeon_device.c16
-rw-r--r--drivers/gpu/drm/radeon/radeon_drv.c4
-rw-r--r--drivers/gpu/drm/radeon/radeon_vm.c20
-rw-r--r--drivers/gpu/drm/radeon/si.c2
7 files changed, 35 insertions, 19 deletions
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 5e0a41a8e793..e4b2f2b51bb8 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -5446,7 +5446,7 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev)
(u32)(rdev->dummy_page.addr >> 12));
WREG32(VM_CONTEXT1_CNTL2, 4);
WREG32(VM_CONTEXT1_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(1) |
- PAGE_TABLE_BLOCK_SIZE(RADEON_VM_BLOCK_SIZE - 9) |
+ PAGE_TABLE_BLOCK_SIZE(radeon_vm_block_size - 9) |
RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
RANGE_PROTECTION_FAULT_ENABLE_DEFAULT |
DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 8c3fbb1d412b..c0fd8f647cf0 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1268,7 +1268,7 @@ static int cayman_pcie_gart_enable(struct radeon_device *rdev)
(u32)(rdev->dummy_page.addr >> 12));
WREG32(VM_CONTEXT1_CNTL2, 4);
WREG32(VM_CONTEXT1_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(1) |
- PAGE_TABLE_BLOCK_SIZE(RADEON_VM_BLOCK_SIZE - 9) |
+ PAGE_TABLE_BLOCK_SIZE(radeon_vm_block_size - 9) |
RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
RANGE_PROTECTION_FAULT_ENABLE_DEFAULT |
DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 6f32f16e12dc..dd77111096bd 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -101,6 +101,7 @@ extern int radeon_aspm;
extern int radeon_runtime_pm;
extern int radeon_hard_reset;
extern int radeon_vm_size;
+extern int radeon_vm_block_size;
/*
* Copy from radeon_drv.h so we don't have to include both and have conflicting
@@ -838,13 +839,8 @@ struct radeon_mec {
/* maximum number of VMIDs */
#define RADEON_NUM_VM 16
-/* defines number of bits in page table versus page directory,
- * a page is 4KB so we have 12 bits offset, 9 bits in the page
- * table and the remaining 19 bits are in the page directory */
-#define RADEON_VM_BLOCK_SIZE 9
-
/* number of entries in page table */
-#define RADEON_VM_PTE_COUNT (1 << RADEON_VM_BLOCK_SIZE)
+#define RADEON_VM_PTE_COUNT (1 << radeon_vm_block_size)
/* PTBs (Page Table Blocks) need to be aligned to 32K */
#define RADEON_VM_PTB_ALIGN_SIZE 32768
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 3f1e3060377c..03686fab842d 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1073,6 +1073,22 @@ static void radeon_check_arguments(struct radeon_device *rdev)
radeon_vm_size);
radeon_vm_size = 4096;
}
+
+ /* defines number of bits in page table versus page directory,
+ * a page is 4KB so we have 12 bits offset, minimum 9 bits in the
+ * page table and the remaining bits are in the page directory */
+ if (radeon_vm_block_size < 9) {
+ dev_warn(rdev->dev, "VM page table size (%d) to small\n",
+ radeon_vm_block_size);
+ radeon_vm_block_size = 9;
+ }
+
+ if (radeon_vm_block_size > 24 ||
+ radeon_vm_size < (1ull << radeon_vm_block_size)) {
+ dev_warn(rdev->dev, "VM page table size (%d) to large\n",
+ radeon_vm_block_size);
+ radeon_vm_block_size = 9;
+ }
}
/**
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index a09426c7a2f7..b7a2ec2d1598 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -173,6 +173,7 @@ int radeon_aspm = -1;
int radeon_runtime_pm = -1;
int radeon_hard_reset = 0;
int radeon_vm_size = 4096;
+int radeon_vm_block_size = 9;
MODULE_PARM_DESC(no_wb, "Disable AGP writeback for scratch registers");
module_param_named(no_wb, radeon_no_wb, int, 0444);
@@ -243,6 +244,9 @@ module_param_named(hard_reset, radeon_hard_reset, int, 0444);
MODULE_PARM_DESC(vm_size, "VM address space size in megabytes (default 4GB)");
module_param_named(vm_size, radeon_vm_size, int, 0444);
+MODULE_PARM_DESC(vm_block_size, "VM page table size in bits (default 9)");
+module_param_named(vm_block_size, radeon_vm_block_size, int, 0444);
+
static struct pci_device_id pciidlist[] = {
radeon_PCI_IDS
};
diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index d3c9161aab8c..899d9126cad6 100644
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -59,7 +59,7 @@
*/
static unsigned radeon_vm_num_pdes(struct radeon_device *rdev)
{
- return rdev->vm_manager.max_pfn >> RADEON_VM_BLOCK_SIZE;
+ return rdev->vm_manager.max_pfn >> radeon_vm_block_size;
}
/**
@@ -474,8 +474,10 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
bo_va->valid = false;
list_move(&bo_va->vm_list, head);
- soffset = (soffset / RADEON_GPU_PAGE_SIZE) >> RADEON_VM_BLOCK_SIZE;
- eoffset = (eoffset / RADEON_GPU_PAGE_SIZE) >> RADEON_VM_BLOCK_SIZE;
+ soffset = (soffset / RADEON_GPU_PAGE_SIZE) >> radeon_vm_block_size;
+ eoffset = (eoffset / RADEON_GPU_PAGE_SIZE) >> radeon_vm_block_size;
+
+ BUG_ON(eoffset >= radeon_vm_num_pdes(rdev));
if (eoffset > vm->max_pde_used)
vm->max_pde_used = eoffset;
@@ -583,10 +585,9 @@ static uint32_t radeon_vm_page_flags(uint32_t flags)
int radeon_vm_update_page_directory(struct radeon_device *rdev,
struct radeon_vm *vm)
{
- static const uint32_t incr = RADEON_VM_PTE_COUNT * 8;
-
struct radeon_bo *pd = vm->page_directory;
uint64_t pd_addr = radeon_bo_gpu_offset(pd);
+ uint32_t incr = RADEON_VM_PTE_COUNT * 8;
uint64_t last_pde = ~0, last_pt = ~0;
unsigned count = 0, pt_idx, ndw;
struct radeon_ib ib;
@@ -757,8 +758,7 @@ static void radeon_vm_update_ptes(struct radeon_device *rdev,
uint64_t start, uint64_t end,
uint64_t dst, uint32_t flags)
{
- static const uint64_t mask = RADEON_VM_PTE_COUNT - 1;
-
+ uint64_t mask = RADEON_VM_PTE_COUNT - 1;
uint64_t last_pte = ~0, last_dst = ~0;
unsigned count = 0;
uint64_t addr;
@@ -768,7 +768,7 @@ static void radeon_vm_update_ptes(struct radeon_device *rdev,
/* walk over the address space and update the page tables */
for (addr = start; addr < end; ) {
- uint64_t pt_idx = addr >> RADEON_VM_BLOCK_SIZE;
+ uint64_t pt_idx = addr >> radeon_vm_block_size;
struct radeon_bo *pt = vm->page_tables[pt_idx].bo;
unsigned nptes;
uint64_t pte;
@@ -873,13 +873,13 @@ int radeon_vm_bo_update(struct radeon_device *rdev,
/* padding, etc. */
ndw = 64;
- if (RADEON_VM_BLOCK_SIZE > 11)
+ if (radeon_vm_block_size > 11)
/* reserve space for one header for every 2k dwords */
ndw += (nptes >> 11) * 4;
else
/* reserve space for one header for
every (1 << BLOCK_SIZE) entries */
- ndw += (nptes >> RADEON_VM_BLOCK_SIZE) * 4;
+ ndw += (nptes >> radeon_vm_block_size) * 4;
/* reserve space for pte addresses */
ndw += nptes * 2;
diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
index 85d030ecebae..ec13e8df4c30 100644
--- a/drivers/gpu/drm/radeon/si.c
+++ b/drivers/gpu/drm/radeon/si.c
@@ -4095,7 +4095,7 @@ static int si_pcie_gart_enable(struct radeon_device *rdev)
(u32)(rdev->dummy_page.addr >> 12));
WREG32(VM_CONTEXT1_CNTL2, 4);
WREG32(VM_CONTEXT1_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(1) |
- PAGE_TABLE_BLOCK_SIZE(RADEON_VM_BLOCK_SIZE - 9) |
+ PAGE_TABLE_BLOCK_SIZE(radeon_vm_block_size - 9) |
RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
RANGE_PROTECTION_FAULT_ENABLE_DEFAULT |
DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT |