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path: root/drivers/gpu/drm/radeon/evergreen_cs.c
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Diffstat (limited to 'drivers/gpu/drm/radeon/evergreen_cs.c')
-rw-r--r--drivers/gpu/drm/radeon/evergreen_cs.c104
1 files changed, 47 insertions, 57 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c
index c9e0fbbf76a3..46f87d4aaf31 100644
--- a/drivers/gpu/drm/radeon/evergreen_cs.c
+++ b/drivers/gpu/drm/radeon/evergreen_cs.c
@@ -34,6 +34,8 @@
#define MAX(a,b) (((a)>(b))?(a):(b))
#define MIN(a,b) (((a)<(b))?(a):(b))
+#define REG_SAFE_BM_SIZE ARRAY_SIZE(evergreen_reg_safe_bm)
+
int r600_dma_cs_next_reloc(struct radeon_cs_parser *p,
struct radeon_bo_list **cs_reloc);
struct evergreen_cs_track {
@@ -84,6 +86,7 @@ struct evergreen_cs_track {
u32 htile_surface;
struct radeon_bo *htile_bo;
unsigned long indirect_draw_buffer_size;
+ const unsigned *reg_safe_bm;
};
static u32 evergreen_cs_get_aray_mode(u32 tiling_flags)
@@ -444,7 +447,7 @@ static int evergreen_cs_track_validate_cb(struct radeon_cs_parser *p, unsigned i
* command stream.
*/
if (!surf.mode) {
- volatile u32 *ib = p->ib.ptr;
+ uint32_t *ib = p->ib.ptr;
unsigned long tmp, nby, bsize, size, min = 0;
/* find the height the ddx wants */
@@ -1083,41 +1086,18 @@ static int evergreen_cs_parse_packet0(struct radeon_cs_parser *p,
}
/**
- * evergreen_cs_check_reg() - check if register is authorized or not
+ * evergreen_cs_handle_reg() - process registers that need special handling.
* @parser: parser structure holding parsing context
* @reg: register we are testing
* @idx: index into the cs buffer
- *
- * This function will test against evergreen_reg_safe_bm and return 0
- * if register is safe. If register is not flag as safe this function
- * will test it against a list of register needind special handling.
*/
-static int evergreen_cs_check_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
+static int evergreen_cs_handle_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
{
struct evergreen_cs_track *track = (struct evergreen_cs_track *)p->track;
struct radeon_bo_list *reloc;
- u32 last_reg;
- u32 m, i, tmp, *ib;
+ u32 tmp, *ib;
int r;
- if (p->rdev->family >= CHIP_CAYMAN)
- last_reg = ARRAY_SIZE(cayman_reg_safe_bm);
- else
- last_reg = ARRAY_SIZE(evergreen_reg_safe_bm);
-
- i = (reg >> 7);
- if (i >= last_reg) {
- dev_warn(p->dev, "forbidden register 0x%08x at %d\n", reg, idx);
- return -EINVAL;
- }
- m = 1 << ((reg >> 2) & 31);
- if (p->rdev->family >= CHIP_CAYMAN) {
- if (!(cayman_reg_safe_bm[i] & m))
- return 0;
- } else {
- if (!(evergreen_reg_safe_bm[i] & m))
- return 0;
- }
ib = p->ib.ptr;
switch (reg) {
/* force following reg to 0 in an attempt to disable out buffer
@@ -1764,29 +1744,27 @@ static int evergreen_cs_check_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
return 0;
}
-static bool evergreen_is_safe_reg(struct radeon_cs_parser *p, u32 reg, u32 idx)
+/**
+ * evergreen_is_safe_reg() - check if register is authorized or not
+ * @parser: parser structure holding parsing context
+ * @reg: register we are testing
+ *
+ * This function will test against reg_safe_bm and return true
+ * if register is safe or false otherwise.
+ */
+static inline bool evergreen_is_safe_reg(struct radeon_cs_parser *p, u32 reg)
{
- u32 last_reg, m, i;
-
- if (p->rdev->family >= CHIP_CAYMAN)
- last_reg = ARRAY_SIZE(cayman_reg_safe_bm);
- else
- last_reg = ARRAY_SIZE(evergreen_reg_safe_bm);
+ struct evergreen_cs_track *track = p->track;
+ u32 m, i;
i = (reg >> 7);
- if (i >= last_reg) {
- dev_warn(p->dev, "forbidden register 0x%08x at %d\n", reg, idx);
+ if (unlikely(i >= REG_SAFE_BM_SIZE)) {
return false;
}
m = 1 << ((reg >> 2) & 31);
- if (p->rdev->family >= CHIP_CAYMAN) {
- if (!(cayman_reg_safe_bm[i] & m))
- return true;
- } else {
- if (!(evergreen_reg_safe_bm[i] & m))
- return true;
- }
- dev_warn(p->dev, "forbidden register 0x%08x at %d\n", reg, idx);
+ if (!(track->reg_safe_bm[i] & m))
+ return true;
+
return false;
}
@@ -1795,7 +1773,7 @@ static int evergreen_packet3_check(struct radeon_cs_parser *p,
{
struct radeon_bo_list *reloc;
struct evergreen_cs_track *track;
- volatile u32 *ib;
+ uint32_t *ib;
unsigned idx;
unsigned i;
unsigned start_reg, end_reg, reg;
@@ -2321,9 +2299,10 @@ static int evergreen_packet3_check(struct radeon_cs_parser *p,
DRM_ERROR("bad PACKET3_SET_CONFIG_REG\n");
return -EINVAL;
}
- for (i = 0; i < pkt->count; i++) {
- reg = start_reg + (4 * i);
- r = evergreen_cs_check_reg(p, reg, idx+1+i);
+ for (reg = start_reg, idx++; reg <= end_reg; reg += 4, idx++) {
+ if (evergreen_is_safe_reg(p, reg))
+ continue;
+ r = evergreen_cs_handle_reg(p, reg, idx);
if (r)
return r;
}
@@ -2337,9 +2316,10 @@ static int evergreen_packet3_check(struct radeon_cs_parser *p,
DRM_ERROR("bad PACKET3_SET_CONTEXT_REG\n");
return -EINVAL;
}
- for (i = 0; i < pkt->count; i++) {
- reg = start_reg + (4 * i);
- r = evergreen_cs_check_reg(p, reg, idx+1+i);
+ for (reg = start_reg, idx++; reg <= end_reg; reg += 4, idx++) {
+ if (evergreen_is_safe_reg(p, reg))
+ continue;
+ r = evergreen_cs_handle_reg(p, reg, idx);
if (r)
return r;
}
@@ -2594,8 +2574,11 @@ static int evergreen_packet3_check(struct radeon_cs_parser *p,
} else {
/* SRC is a reg. */
reg = radeon_get_ib_value(p, idx+1) << 2;
- if (!evergreen_is_safe_reg(p, reg, idx+1))
+ if (!evergreen_is_safe_reg(p, reg)) {
+ dev_warn(p->dev, "forbidden register 0x%08x at %d\n",
+ reg, idx + 1);
return -EINVAL;
+ }
}
if (idx_value & 0x2) {
u64 offset;
@@ -2618,8 +2601,11 @@ static int evergreen_packet3_check(struct radeon_cs_parser *p,
} else {
/* DST is a reg. */
reg = radeon_get_ib_value(p, idx+3) << 2;
- if (!evergreen_is_safe_reg(p, reg, idx+3))
+ if (!evergreen_is_safe_reg(p, reg)) {
+ dev_warn(p->dev, "forbidden register 0x%08x at %d\n",
+ reg, idx + 3);
return -EINVAL;
+ }
}
break;
case PACKET3_NOP:
@@ -2644,11 +2630,15 @@ int evergreen_cs_parse(struct radeon_cs_parser *p)
if (track == NULL)
return -ENOMEM;
evergreen_cs_track_init(track);
- if (p->rdev->family >= CHIP_CAYMAN)
+ if (p->rdev->family >= CHIP_CAYMAN) {
tmp = p->rdev->config.cayman.tile_config;
- else
+ track->reg_safe_bm = cayman_reg_safe_bm;
+ } else {
tmp = p->rdev->config.evergreen.tile_config;
-
+ track->reg_safe_bm = evergreen_reg_safe_bm;
+ }
+ BUILD_BUG_ON(ARRAY_SIZE(cayman_reg_safe_bm) != REG_SAFE_BM_SIZE);
+ BUILD_BUG_ON(ARRAY_SIZE(evergreen_reg_safe_bm) != REG_SAFE_BM_SIZE);
switch (tmp & 0xf) {
case 0:
track->npipes = 1;
@@ -2757,7 +2747,7 @@ int evergreen_dma_cs_parse(struct radeon_cs_parser *p)
struct radeon_cs_chunk *ib_chunk = p->chunk_ib;
struct radeon_bo_list *src_reloc, *dst_reloc, *dst2_reloc;
u32 header, cmd, count, sub_cmd;
- volatile u32 *ib = p->ib.ptr;
+ uint32_t *ib = p->ib.ptr;
u32 idx;
u64 src_offset, dst_offset, dst2_offset;
int r;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.