From 5aa709be7e60a8296859766935f92bce51465341 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 3 Dec 2012 19:42:37 -0500 Subject: [PATCH] drm/radeon/si: add VM CS checker support for CP DMA Need to verify for copies involving registers. Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/si.c | 47 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index f6e7815..7e835d9 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2550,6 +2550,7 @@ static int si_vm_packet3_gfx_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: @@ -2649,6 +2650,52 @@ static int si_vm_packet3_gfx_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 (!si_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 (!si_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 (!si_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 (!si_vm_reg_valid(reg)) { + DRM_ERROR("CP DMA Bad DST register\n"); + return -EINVAL; + } + } + } + } + } + break; default: DRM_ERROR("Invalid GFX packet3: 0x%x\n", pkt->opcode); return -EINVAL; -- 2.7.4