[PATCH 2/3] drm/radeon: add readonly flag to radeon_gart_set_page
Christian König
deathsimple at vodafone.de
Wed Jul 9 11:15:43 PDT 2014
From: Christian König <christian.koenig at amd.com>
Signed-off-by: Christian König <christian.koenig at amd.com>
---
drivers/gpu/drm/radeon/r100.c | 2 +-
drivers/gpu/drm/radeon/r300.c | 8 ++++++--
drivers/gpu/drm/radeon/radeon.h | 8 ++++----
drivers/gpu/drm/radeon/radeon_asic.h | 8 ++++----
drivers/gpu/drm/radeon/radeon_gart.c | 4 ++--
drivers/gpu/drm/radeon/rs400.c | 9 +++++++--
drivers/gpu/drm/radeon/rs600.c | 8 ++++++--
7 files changed, 30 insertions(+), 17 deletions(-)
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index ed1c53e..bffbb14 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -682,7 +682,7 @@ void r100_pci_gart_disable(struct radeon_device *rdev)
}
void r100_pci_gart_set_page(struct radeon_device *rdev, unsigned i,
- uint64_t addr)
+ uint64_t addr, bool readonly)
{
u32 *gtt = rdev->gart.ptr;
gtt[i] = cpu_to_le32(lower_32_bits(addr));
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 8d14e66..2ea3d29 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -73,13 +73,17 @@ void rv370_pcie_gart_tlb_flush(struct radeon_device *rdev)
#define R300_PTE_READABLE (1 << 3)
void rv370_pcie_gart_set_page(struct radeon_device *rdev, unsigned i,
- uint64_t addr)
+ uint64_t addr, bool readonly)
{
void __iomem *ptr = rdev->gart.ptr;
addr = (lower_32_bits(addr) >> 8) |
((upper_32_bits(addr) & 0xff) << 24) |
- R300_PTE_WRITEABLE | R300_PTE_READABLE;
+ R300_PTE_READABLE;
+
+ if (!readonly)
+ addr |= R300_PTE_WRITEABLE;
+
/* on x86 we want this to be CPU endian, on powerpc
* on powerpc without HW swappers, it'll get swapped on way
* into VRAM - so no need for cpu_to_le32 on VRAM tables */
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index c16652a..283b496 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -855,8 +855,8 @@ struct radeon_mec {
#define R600_PTE_FRAG_256KB (6 << 7)
/* flags used for GART page table entries on R600+ */
-#define R600_PTE_GART ( R600_PTE_VALID | R600_PTE_SYSTEM | R600_PTE_SNOOPED \
- | R600_PTE_READABLE | R600_PTE_WRITEABLE)
+#define R600_PTE_GART ( R600_PTE_VALID | R600_PTE_SYSTEM | \
+ R600_PTE_SNOOPED | R600_PTE_READABLE )
struct radeon_vm_pt {
struct radeon_bo *bo;
@@ -1776,7 +1776,7 @@ struct radeon_asic {
struct {
void (*tlb_flush)(struct radeon_device *rdev);
void (*set_page)(struct radeon_device *rdev, unsigned i,
- uint64_t addr);
+ uint64_t addr, bool readonly);
} gart;
struct {
int (*init)(struct radeon_device *rdev);
@@ -2703,7 +2703,7 @@ void radeon_ring_write(struct radeon_ring *ring, uint32_t v);
#define radeon_vga_set_state(rdev, state) (rdev)->asic->vga_set_state((rdev), (state))
#define radeon_asic_reset(rdev) (rdev)->asic->asic_reset((rdev))
#define radeon_gart_tlb_flush(rdev) (rdev)->asic->gart.tlb_flush((rdev))
-#define radeon_gart_set_page(rdev, i, p) (rdev)->asic->gart.set_page((rdev), (i), (p))
+#define radeon_gart_set_page(rdev, i, p, r) (rdev)->asic->gart.set_page((rdev), (i), (p), (r))
#define radeon_asic_vm_init(rdev) (rdev)->asic->vm.init((rdev))
#define radeon_asic_vm_fini(rdev) (rdev)->asic->vm.fini((rdev))
#define radeon_asic_vm_set_page(rdev, ib, pe, addr, count, incr, flags) ((rdev)->asic->vm.set_page((rdev), (ib), (pe), (addr), (count), (incr), (flags)))
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 01e7c0a..1e0cb0c2 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -68,7 +68,7 @@ int r100_asic_reset(struct radeon_device *rdev);
u32 r100_get_vblank_counter(struct radeon_device *rdev, int crtc);
void r100_pci_gart_tlb_flush(struct radeon_device *rdev);
void r100_pci_gart_set_page(struct radeon_device *rdev, unsigned i,
- uint64_t addr);
+ uint64_t addr, bool readonly);
void r100_ring_start(struct radeon_device *rdev, struct radeon_ring *ring);
int r100_irq_set(struct radeon_device *rdev);
int r100_irq_process(struct radeon_device *rdev);
@@ -173,7 +173,7 @@ extern void r300_fence_ring_emit(struct radeon_device *rdev,
extern int r300_cs_parse(struct radeon_cs_parser *p);
extern void rv370_pcie_gart_tlb_flush(struct radeon_device *rdev);
extern void rv370_pcie_gart_set_page(struct radeon_device *rdev, unsigned i,
- uint64_t addr);
+ uint64_t addr, bool readonly);
extern void rv370_set_pcie_lanes(struct radeon_device *rdev, int lanes);
extern int rv370_get_pcie_lanes(struct radeon_device *rdev);
extern void r300_set_reg_safe(struct radeon_device *rdev);
@@ -209,7 +209,7 @@ extern int rs400_suspend(struct radeon_device *rdev);
extern int rs400_resume(struct radeon_device *rdev);
void rs400_gart_tlb_flush(struct radeon_device *rdev);
void rs400_gart_set_page(struct radeon_device *rdev, unsigned i,
- uint64_t addr);
+ uint64_t addr, bool readonly);
uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg);
void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v);
int rs400_gart_init(struct radeon_device *rdev);
@@ -233,7 +233,7 @@ void rs600_irq_disable(struct radeon_device *rdev);
u32 rs600_get_vblank_counter(struct radeon_device *rdev, int crtc);
void rs600_gart_tlb_flush(struct radeon_device *rdev);
void rs600_gart_set_page(struct radeon_device *rdev, unsigned i,
- uint64_t addr);
+ uint64_t addr, bool readonly);
uint32_t rs600_mc_rreg(struct radeon_device *rdev, uint32_t reg);
void rs600_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v);
void rs600_bandwidth_update(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index b7d3e84..3b80eac 100644
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -243,7 +243,7 @@ void radeon_gart_unbind(struct radeon_device *rdev, unsigned offset,
page_base = rdev->gart.pages_addr[p];
for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
if (rdev->gart.ptr) {
- radeon_gart_set_page(rdev, t, page_base);
+ radeon_gart_set_page(rdev, t, page_base, false);
}
page_base += RADEON_GPU_PAGE_SIZE;
}
@@ -287,7 +287,7 @@ int radeon_gart_bind(struct radeon_device *rdev, unsigned offset,
if (rdev->gart.ptr) {
page_base = rdev->gart.pages_addr[p];
for (j = 0; j < (PAGE_SIZE / RADEON_GPU_PAGE_SIZE); j++, t++) {
- radeon_gart_set_page(rdev, t, page_base);
+ radeon_gart_set_page(rdev, t, page_base, false);
page_base += RADEON_GPU_PAGE_SIZE;
}
}
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index 4519f9c..9dfb617 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -211,14 +211,19 @@ void rs400_gart_fini(struct radeon_device *rdev)
#define RS400_PTE_WRITEABLE (1 << 2)
#define RS400_PTE_READABLE (1 << 3)
-void rs400_gart_set_page(struct radeon_device *rdev, unsigned i, uint64_t addr)
+void rs400_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr, bool readonly)
{
uint32_t entry;
u32 *gtt = rdev->gart.ptr;
entry = (lower_32_bits(addr) & PAGE_MASK) |
((upper_32_bits(addr) & 0xff) << 4) |
- RS400_PTE_WRITEABLE | RS400_PTE_READABLE;
+ RS400_PTE_READABLE;
+
+ if (!readonly)
+ entry |= RS400_PTE_WRITEABLE;
+
entry = cpu_to_le32(entry);
gtt[i] = entry;
}
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 27a56ad..0bbb1ab 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -625,15 +625,19 @@ static void rs600_gart_fini(struct radeon_device *rdev)
radeon_gart_table_vram_free(rdev);
}
-void rs600_gart_set_page(struct radeon_device *rdev, unsigned i, uint64_t addr)
+void rs600_gart_set_page(struct radeon_device *rdev, unsigned i,
+ uint64_t addr, bool readonly)
{
void __iomem *ptr = (void *)rdev->gart.ptr;
addr = addr & 0xFFFFFFFFFFFFF000ULL;
if (addr == rdev->dummy_page.addr)
addr |= R600_PTE_SYSTEM | R600_PTE_SNOOPED;
- else
+ else {
addr |= R600_PTE_GART;
+ if (!readonly)
+ addr |= R600_PTE_WRITEABLE;
+ }
writeq(addr, ptr + (i * 8));
}
--
1.9.1
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