drm/radeon/cayman: add VM CS checker support for CP DMA (94e014ee) · Commits · e / devices / android_kernel_sony_msm8994

drivers/gpu/drm/radeon/evergreen_cs.c

+47 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2932,6 +2932,7 @@ static int evergreen_vm_packet3_check(struct radeon_device *rdev,
	u32 idx = pkt->idx + 1;		u32 idx = pkt->idx + 1;
	u32 idx_value = ib[idx];		u32 idx_value = ib[idx];
	u32 start_reg, end_reg, reg, i;		u32 start_reg, end_reg, reg, i;
			u32 command, info;

	switch (pkt->opcode) {		switch (pkt->opcode) {
	case PACKET3_NOP:		case PACKET3_NOP:
	@@ -3006,6 +3007,52 @@ static int evergreen_vm_packet3_check(struct radeon_device *rdev,
	return -EINVAL;		return -EINVAL;
	}		}
	break;		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:		default:
	return -EINVAL;		return -EINVAL;
	}		}