From: Dave Airlie Date: Thu, 1 Jun 2017 04:40:10 +0000 (+0100) Subject: radv: realign cp dma code with radeonsi X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=bcae3274692954ad2cd6dfc253579ec98d50856f;p=mesa.git radv: realign cp dma code with radeonsi This reworks this code to be like radeonsi, which will make it easier to add GFX9 support to it in the future. Reviewed-by: Bas Nieuwenhuizen Signed-off-by: Dave Airlie --- diff --git a/src/amd/vulkan/si_cmd_buffer.c b/src/amd/vulkan/si_cmd_buffer.c index 2b0ae5c7696..8237155bda8 100644 --- a/src/amd/vulkan/si_cmd_buffer.c +++ b/src/amd/vulkan/si_cmd_buffer.c @@ -980,51 +980,76 @@ si_emit_cache_flush(struct radv_cmd_buffer *cmd_buffer) /* Set this if you want the 3D engine to wait until CP DMA is done. * It should be set on the last CP DMA packet. */ -#define R600_CP_DMA_SYNC (1 << 0) /* R600+ */ +#define CP_DMA_SYNC (1 << 0) /* Set this if the source data was used as a destination in a previous CP DMA * packet. It's for preventing a read-after-write (RAW) hazard between two * CP DMA packets. */ -#define SI_CP_DMA_RAW_WAIT (1 << 1) /* SI+ */ -#define CIK_CP_DMA_USE_L2 (1 << 2) +#define CP_DMA_RAW_WAIT (1 << 1) +#define CP_DMA_USE_L2 (1 << 2) +#define CP_DMA_CLEAR (1 << 3) /* Alignment for optimal performance. */ -#define CP_DMA_ALIGNMENT 32 -/* The max number of bytes to copy per packet. */ -#define CP_DMA_MAX_BYTE_COUNT ((1 << 21) - CP_DMA_ALIGNMENT) +#define SI_CPDMA_ALIGNMENT 32 -static void si_emit_cp_dma_copy_buffer(struct radv_cmd_buffer *cmd_buffer, - uint64_t dst_va, uint64_t src_va, - unsigned size, unsigned flags) +/* The max number of bytes that can be copied per packet. */ +static inline unsigned cp_dma_max_byte_count(struct radv_cmd_buffer *cmd_buffer) +{ + unsigned max = S_414_BYTE_COUNT_GFX6(~0u); + + /* make it aligned for optimal performance */ + return max & ~(SI_CPDMA_ALIGNMENT - 1); +} + +static void si_emit_cp_dma(struct radv_cmd_buffer *cmd_buffer, + uint64_t dst_va, uint64_t src_va, + unsigned size, unsigned flags) { struct radeon_winsys_cs *cs = cmd_buffer->cs; - uint32_t sync_flag = flags & R600_CP_DMA_SYNC ? S_411_CP_SYNC(1) : 0; - uint32_t wr_confirm = !(flags & R600_CP_DMA_SYNC) ? S_414_DISABLE_WR_CONFIRM_GFX6(1) : 0; - uint32_t raw_wait = flags & SI_CP_DMA_RAW_WAIT ? S_414_RAW_WAIT(1) : 0; - uint32_t sel = flags & CIK_CP_DMA_USE_L2 ? - S_411_SRC_SEL(V_411_SRC_ADDR_TC_L2) | - S_411_DSL_SEL(V_411_DST_ADDR_TC_L2) : 0; + uint32_t header = 0, command = 0; assert(size); - assert((size & ((1<<21)-1)) == size); + assert(size <= cp_dma_max_byte_count(cmd_buffer)); radeon_check_space(cmd_buffer->device->ws, cmd_buffer->cs, 9); + command |= S_414_BYTE_COUNT_GFX6(size); + + /* Sync flags. */ + if (flags & CP_DMA_SYNC) + header |= S_411_CP_SYNC(1); + else { + command |= S_414_DISABLE_WR_CONFIRM_GFX6(1); + } + + if (flags & CP_DMA_RAW_WAIT) + command |= S_414_RAW_WAIT(1); + + /* Src and dst flags. */ + if (flags & CP_DMA_USE_L2) + header |= S_411_DSL_SEL(V_411_DST_ADDR_TC_L2); + + if (flags & CP_DMA_CLEAR) + header |= S_411_SRC_SEL(V_411_DATA); + else if (flags & CP_DMA_USE_L2) + header |= S_411_SRC_SEL(V_411_SRC_ADDR_TC_L2); + if (cmd_buffer->device->physical_device->rad_info.chip_class >= CIK) { radeon_emit(cs, PKT3(PKT3_DMA_DATA, 5, 0)); - radeon_emit(cs, sync_flag | sel); /* CP_SYNC [31] */ + radeon_emit(cs, header); radeon_emit(cs, src_va); /* SRC_ADDR_LO [31:0] */ radeon_emit(cs, src_va >> 32); /* SRC_ADDR_HI [31:0] */ radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */ radeon_emit(cs, dst_va >> 32); /* DST_ADDR_HI [31:0] */ - radeon_emit(cs, size | wr_confirm | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */ + radeon_emit(cs, command); } else { + header |= S_411_SRC_ADDR_HI(src_va >> 32); radeon_emit(cs, PKT3(PKT3_CP_DMA, 4, 0)); radeon_emit(cs, src_va); /* SRC_ADDR_LO [31:0] */ - radeon_emit(cs, sync_flag | ((src_va >> 32) & 0xffff)); /* CP_SYNC [31] | SRC_ADDR_HI [15:0] */ + radeon_emit(cs, header); /* SRC_ADDR_HI [15:0] + flags. */ radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */ radeon_emit(cs, (dst_va >> 32) & 0xffff); /* DST_ADDR_HI [15:0] */ - radeon_emit(cs, size | wr_confirm | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */ + radeon_emit(cs, command); } /* CP DMA is executed in ME, but index buffers are read by PFP. @@ -1032,7 +1057,7 @@ static void si_emit_cp_dma_copy_buffer(struct radv_cmd_buffer *cmd_buffer, * indices. If we wanted to execute CP DMA in PFP, this packet * should precede it. */ - if (sync_flag && cmd_buffer->queue_family_index == RADV_QUEUE_GENERAL) { + if ((flags & CP_DMA_SYNC) && cmd_buffer->queue_family_index == RADV_QUEUE_GENERAL) { radeon_emit(cs, PKT3(PKT3_PFP_SYNC_ME, 0, 0)); radeon_emit(cs, 0); } @@ -1040,55 +1065,14 @@ static void si_emit_cp_dma_copy_buffer(struct radv_cmd_buffer *cmd_buffer, radv_cmd_buffer_trace_emit(cmd_buffer); } -/* Emit a CP DMA packet to clear a buffer. The size must fit in bits [20:0]. */ -static void si_emit_cp_dma_clear_buffer(struct radv_cmd_buffer *cmd_buffer, - uint64_t dst_va, unsigned size, - uint32_t clear_value, unsigned flags) -{ - struct radeon_winsys_cs *cs = cmd_buffer->cs; - uint32_t sync_flag = flags & R600_CP_DMA_SYNC ? S_411_CP_SYNC(1) : 0; - uint32_t wr_confirm = !(flags & R600_CP_DMA_SYNC) ? S_414_DISABLE_WR_CONFIRM_GFX6(1) : 0; - uint32_t raw_wait = flags & SI_CP_DMA_RAW_WAIT ? S_414_RAW_WAIT(1) : 0; - uint32_t dst_sel = flags & CIK_CP_DMA_USE_L2 ? S_411_DSL_SEL(V_411_DST_ADDR_TC_L2) : 0; - - assert(size); - assert((size & ((1<<21)-1)) == size); - - radeon_check_space(cmd_buffer->device->ws, cmd_buffer->cs, 9); - - if (cmd_buffer->device->physical_device->rad_info.chip_class >= CIK) { - radeon_emit(cs, PKT3(PKT3_DMA_DATA, 5, 0)); - radeon_emit(cs, sync_flag | dst_sel | S_411_SRC_SEL(V_411_DATA)); /* CP_SYNC [31] | SRC_SEL[30:29] */ - radeon_emit(cs, clear_value); /* DATA [31:0] */ - radeon_emit(cs, 0); - radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */ - radeon_emit(cs, dst_va >> 32); /* DST_ADDR_HI [15:0] */ - radeon_emit(cs, size | wr_confirm | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */ - } else { - radeon_emit(cs, PKT3(PKT3_CP_DMA, 4, 0)); - radeon_emit(cs, clear_value); /* DATA [31:0] */ - radeon_emit(cs, sync_flag | S_411_SRC_SEL(V_411_DATA)); /* CP_SYNC [31] | SRC_SEL[30:29] */ - radeon_emit(cs, dst_va); /* DST_ADDR_LO [31:0] */ - radeon_emit(cs, (dst_va >> 32) & 0xffff); /* DST_ADDR_HI [15:0] */ - radeon_emit(cs, size | wr_confirm | raw_wait); /* COMMAND [29:22] | BYTE_COUNT [20:0] */ - } - - /* See "copy_buffer" for explanation. */ - if (sync_flag && cmd_buffer->queue_family_index == RADV_QUEUE_GENERAL) { - radeon_emit(cs, PKT3(PKT3_PFP_SYNC_ME, 0, 0)); - radeon_emit(cs, 0); - } - radv_cmd_buffer_trace_emit(cmd_buffer); -} - void si_cp_dma_prefetch(struct radv_cmd_buffer *cmd_buffer, uint64_t va, unsigned size) { - uint64_t aligned_va = va & ~(CP_DMA_ALIGNMENT - 1); - uint64_t aligned_size = ((va + size + CP_DMA_ALIGNMENT -1) & ~(CP_DMA_ALIGNMENT - 1)) - aligned_va; + uint64_t aligned_va = va & ~(SI_CPDMA_ALIGNMENT - 1); + uint64_t aligned_size = ((va + size + SI_CPDMA_ALIGNMENT -1) & ~(SI_CPDMA_ALIGNMENT - 1)) - aligned_va; - si_emit_cp_dma_copy_buffer(cmd_buffer, aligned_va, aligned_va, - aligned_size, CIK_CP_DMA_USE_L2); + si_emit_cp_dma(cmd_buffer, aligned_va, aligned_va, + aligned_size, CP_DMA_USE_L2); } static void si_cp_dma_prepare(struct radv_cmd_buffer *cmd_buffer, uint64_t byte_count, @@ -1100,14 +1084,14 @@ static void si_cp_dma_prepare(struct radv_cmd_buffer *cmd_buffer, uint64_t byte_ */ if (cmd_buffer->state.flush_bits) { si_emit_cache_flush(cmd_buffer); - *flags |= SI_CP_DMA_RAW_WAIT; + *flags |= CP_DMA_RAW_WAIT; } /* Do the synchronization after the last dma, so that all data * is written to memory. */ if (byte_count == remaining_size) - *flags |= R600_CP_DMA_SYNC; + *flags |= CP_DMA_SYNC; } static void si_cp_dma_realign_engine(struct radv_cmd_buffer *cmd_buffer, unsigned size) @@ -1115,20 +1099,20 @@ static void si_cp_dma_realign_engine(struct radv_cmd_buffer *cmd_buffer, unsigne uint64_t va; uint32_t offset; unsigned dma_flags = 0; - unsigned buf_size = CP_DMA_ALIGNMENT * 2; + unsigned buf_size = SI_CPDMA_ALIGNMENT * 2; void *ptr; - assert(size < CP_DMA_ALIGNMENT); + assert(size < SI_CPDMA_ALIGNMENT); - radv_cmd_buffer_upload_alloc(cmd_buffer, buf_size, CP_DMA_ALIGNMENT, &offset, &ptr); + radv_cmd_buffer_upload_alloc(cmd_buffer, buf_size, SI_CPDMA_ALIGNMENT, &offset, &ptr); va = cmd_buffer->device->ws->buffer_get_va(cmd_buffer->upload.upload_bo); va += offset; si_cp_dma_prepare(cmd_buffer, size, size, &dma_flags); - si_emit_cp_dma_copy_buffer(cmd_buffer, va, va + CP_DMA_ALIGNMENT, size, - dma_flags); + si_emit_cp_dma(cmd_buffer, va, va + SI_CPDMA_ALIGNMENT, size, + dma_flags); } void si_cp_dma_buffer_copy(struct radv_cmd_buffer *cmd_buffer, @@ -1145,15 +1129,15 @@ void si_cp_dma_buffer_copy(struct radv_cmd_buffer *cmd_buffer, * just to align the internal counter. Otherwise, the DMA engine * would slow down by an order of magnitude for following copies. */ - if (size % CP_DMA_ALIGNMENT) - realign_size = CP_DMA_ALIGNMENT - (size % CP_DMA_ALIGNMENT); + if (size % SI_CPDMA_ALIGNMENT) + realign_size = SI_CPDMA_ALIGNMENT - (size % SI_CPDMA_ALIGNMENT); /* If the copy begins unaligned, we must start copying from the next * aligned block and the skipped part should be copied after everything * else has been copied. Only the src alignment matters, not dst. */ - if (src_va % CP_DMA_ALIGNMENT) { - skipped_size = CP_DMA_ALIGNMENT - (src_va % CP_DMA_ALIGNMENT); + if (src_va % SI_CPDMA_ALIGNMENT) { + skipped_size = SI_CPDMA_ALIGNMENT - (src_va % SI_CPDMA_ALIGNMENT); /* The main part will be skipped if the size is too small. */ skipped_size = MIN2(skipped_size, size); size -= skipped_size; @@ -1164,14 +1148,14 @@ void si_cp_dma_buffer_copy(struct radv_cmd_buffer *cmd_buffer, while (size) { unsigned dma_flags = 0; - unsigned byte_count = MIN2(size, CP_DMA_MAX_BYTE_COUNT); + unsigned byte_count = MIN2(size, cp_dma_max_byte_count(cmd_buffer)); si_cp_dma_prepare(cmd_buffer, byte_count, size + skipped_size + realign_size, &dma_flags); - si_emit_cp_dma_copy_buffer(cmd_buffer, main_dest_va, main_src_va, - byte_count, dma_flags); + si_emit_cp_dma(cmd_buffer, main_dest_va, main_src_va, + byte_count, dma_flags); size -= byte_count; main_src_va += byte_count; @@ -1185,8 +1169,8 @@ void si_cp_dma_buffer_copy(struct radv_cmd_buffer *cmd_buffer, size + skipped_size + realign_size, &dma_flags); - si_emit_cp_dma_copy_buffer(cmd_buffer, dest_va, src_va, - skipped_size, dma_flags); + si_emit_cp_dma(cmd_buffer, dest_va, src_va, + skipped_size, dma_flags); } if (realign_size) si_cp_dma_realign_engine(cmd_buffer, realign_size); @@ -1202,14 +1186,14 @@ void si_cp_dma_clear_buffer(struct radv_cmd_buffer *cmd_buffer, uint64_t va, assert(va % 4 == 0 && size % 4 == 0); while (size) { - unsigned byte_count = MIN2(size, CP_DMA_MAX_BYTE_COUNT); - unsigned dma_flags = 0; + unsigned byte_count = MIN2(size, cp_dma_max_byte_count(cmd_buffer)); + unsigned dma_flags = CP_DMA_CLEAR; si_cp_dma_prepare(cmd_buffer, byte_count, size, &dma_flags); /* Emit the clear packet. */ - si_emit_cp_dma_clear_buffer(cmd_buffer, va, byte_count, value, - dma_flags); + si_emit_cp_dma(cmd_buffer, va, value, byte_count, + dma_flags); size -= byte_count; va += byte_count;