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drm/radeon/cayman: add VM CS checker support for CP DMA 

Need to verify for copies involving registers.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2012-12-03 19:32:54 -05:00
parent 8770b86b3e
commit 94e014ee98
1 changed files with 47 additions and 0 deletions
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47
drivers/gpu/drm/radeon/evergreen_cs.c
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@ -2932,6 +2932,7 @@ static int evergreen_vm_packet3_check(struct radeon_device *rdev,
u32 idx = pkt->idx + 1;
u32 idx_value = ib[idx];
u32 start_reg, end_reg, reg, i;
u32 command, info;
switch (pkt->opcode) {
case PACKET3_NOP:
@ -3006,6 +3007,52 @@ static int evergreen_vm_packet3_check(struct radeon_device *rdev,
return -EINVAL;
}
break;
case PACKET3_CP_DMA:
command = ib[idx + 4];
info = ib[idx + 1];
if (command & PACKET3_CP_DMA_CMD_SAS) {
/* src address space is register */
if (((info & 0x60000000) >> 29) == 0) {
start_reg = idx_value << 2;
if (command & PACKET3_CP_DMA_CMD_SAIC) {
reg = start_reg;
if (!evergreen_vm_reg_valid(reg)) {
DRM_ERROR("CP DMA Bad SRC register\n");
return -EINVAL;
}
} else {
for (i = 0; i < (command & 0x1fffff); i++) {
reg = start_reg + (4 * i);
if (!evergreen_vm_reg_valid(reg)) {
DRM_ERROR("CP DMA Bad SRC register\n");
return -EINVAL;
}
}
}
}
}
if (command & PACKET3_CP_DMA_CMD_DAS) {
/* dst address space is register */
if (((info & 0x00300000) >> 20) == 0) {
start_reg = ib[idx + 2];
if (command & PACKET3_CP_DMA_CMD_DAIC) {
reg = start_reg;
if (!evergreen_vm_reg_valid(reg)) {
DRM_ERROR("CP DMA Bad DST register\n");
return -EINVAL;
}
} else {
for (i = 0; i < (command & 0x1fffff); i++) {
reg = start_reg + (4 * i);
if (!evergreen_vm_reg_valid(reg)) {
DRM_ERROR("CP DMA Bad DST register\n");
return -EINVAL;
}
}
}
}
}
break;
default:
return -EINVAL;
}