diff options
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c | 1165 |
1 files changed, 1165 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c new file mode 100644 index 000000000000..e686331fa089 --- /dev/null +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu_state.c @@ -0,0 +1,1165 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2018 The Linux Foundation. All rights reserved. */ + +#include <linux/ascii85.h> +#include "msm_gem.h" +#include "a6xx_gpu.h" +#include "a6xx_gmu.h" +#include "a6xx_gpu_state.h" +#include "a6xx_gmu.xml.h" + +struct a6xx_gpu_state_obj { + const void *handle; + u32 *data; +}; + +struct a6xx_gpu_state { + struct msm_gpu_state base; + + struct a6xx_gpu_state_obj *gmu_registers; + int nr_gmu_registers; + + struct a6xx_gpu_state_obj *registers; + int nr_registers; + + struct a6xx_gpu_state_obj *shaders; + int nr_shaders; + + struct a6xx_gpu_state_obj *clusters; + int nr_clusters; + + struct a6xx_gpu_state_obj *dbgahb_clusters; + int nr_dbgahb_clusters; + + struct a6xx_gpu_state_obj *indexed_regs; + int nr_indexed_regs; + + struct a6xx_gpu_state_obj *debugbus; + int nr_debugbus; + + struct a6xx_gpu_state_obj *vbif_debugbus; + + struct a6xx_gpu_state_obj *cx_debugbus; + int nr_cx_debugbus; + + struct list_head objs; +}; + +static inline int CRASHDUMP_WRITE(u64 *in, u32 reg, u32 val) +{ + in[0] = val; + in[1] = (((u64) reg) << 44 | (1 << 21) | 1); + + return 2; +} + +static inline int CRASHDUMP_READ(u64 *in, u32 reg, u32 dwords, u64 target) +{ + in[0] = target; + in[1] = (((u64) reg) << 44 | dwords); + + return 2; +} + +static inline int CRASHDUMP_FINI(u64 *in) +{ + in[0] = 0; + in[1] = 0; + + return 2; +} + +struct a6xx_crashdumper { + void *ptr; + struct drm_gem_object *bo; + u64 iova; +}; + +struct a6xx_state_memobj { + struct list_head node; + unsigned long long data[]; +}; + +void *state_kcalloc(struct a6xx_gpu_state *a6xx_state, int nr, size_t objsize) +{ + struct a6xx_state_memobj *obj = + kzalloc((nr * objsize) + sizeof(*obj), GFP_KERNEL); + + if (!obj) + return NULL; + + list_add_tail(&obj->node, &a6xx_state->objs); + return &obj->data; +} + +void *state_kmemdup(struct a6xx_gpu_state *a6xx_state, void *src, + size_t size) +{ + void *dst = state_kcalloc(a6xx_state, 1, size); + + if (dst) + memcpy(dst, src, size); + return dst; +} + +/* + * Allocate 1MB for the crashdumper scratch region - 8k for the script and + * the rest for the data + */ +#define A6XX_CD_DATA_OFFSET 8192 +#define A6XX_CD_DATA_SIZE (SZ_1M - 8192) + +static int a6xx_crashdumper_init(struct msm_gpu *gpu, + struct a6xx_crashdumper *dumper) +{ + dumper->ptr = msm_gem_kernel_new_locked(gpu->dev, + SZ_1M, MSM_BO_UNCACHED, gpu->aspace, + &dumper->bo, &dumper->iova); + + if (!IS_ERR(dumper->ptr)) + msm_gem_object_set_name(dumper->bo, "crashdump"); + + return PTR_ERR_OR_ZERO(dumper->ptr); +} + +static int a6xx_crashdumper_run(struct msm_gpu *gpu, + struct a6xx_crashdumper *dumper) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); + u32 val; + int ret; + + if (IS_ERR_OR_NULL(dumper->ptr)) + return -EINVAL; + + if (!a6xx_gmu_sptprac_is_on(&a6xx_gpu->gmu)) + return -EINVAL; + + /* Make sure all pending memory writes are posted */ + wmb(); + + gpu_write64(gpu, REG_A6XX_CP_CRASH_SCRIPT_BASE_LO, + REG_A6XX_CP_CRASH_SCRIPT_BASE_HI, dumper->iova); + + gpu_write(gpu, REG_A6XX_CP_CRASH_DUMP_CNTL, 1); + + ret = gpu_poll_timeout(gpu, REG_A6XX_CP_CRASH_DUMP_STATUS, val, + val & 0x02, 100, 10000); + + gpu_write(gpu, REG_A6XX_CP_CRASH_DUMP_CNTL, 0); + + return ret; +} + +/* read a value from the GX debug bus */ +static int debugbus_read(struct msm_gpu *gpu, u32 block, u32 offset, + u32 *data) +{ + u32 reg = A6XX_DBGC_CFG_DBGBUS_SEL_D_PING_INDEX(offset) | + A6XX_DBGC_CFG_DBGBUS_SEL_D_PING_BLK_SEL(block); + + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_A, reg); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_B, reg); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_C, reg); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_SEL_D, reg); + + /* Wait 1 us to make sure the data is flowing */ + udelay(1); + + data[0] = gpu_read(gpu, REG_A6XX_DBGC_CFG_DBGBUS_TRACE_BUF2); + data[1] = gpu_read(gpu, REG_A6XX_DBGC_CFG_DBGBUS_TRACE_BUF1); + + return 2; +} + +#define cxdbg_write(ptr, offset, val) \ + msm_writel((val), (ptr) + ((offset) << 2)) + +#define cxdbg_read(ptr, offset) \ + msm_readl((ptr) + ((offset) << 2)) + +/* read a value from the CX debug bus */ +static int cx_debugbus_read(void *__iomem cxdbg, u32 block, u32 offset, + u32 *data) +{ + u32 reg = A6XX_CX_DBGC_CFG_DBGBUS_SEL_A_PING_INDEX(offset) | + A6XX_CX_DBGC_CFG_DBGBUS_SEL_A_PING_BLK_SEL(block); + + cxdbg_write(cxdbg, REG_A6XX_CX_DBGC_CFG_DBGBUS_SEL_A, reg); + cxdbg_write(cxdbg, REG_A6XX_CX_DBGC_CFG_DBGBUS_SEL_B, reg); + cxdbg_write(cxdbg, REG_A6XX_CX_DBGC_CFG_DBGBUS_SEL_C, reg); + cxdbg_write(cxdbg, REG_A6XX_CX_DBGC_CFG_DBGBUS_SEL_D, reg); + + /* Wait 1 us to make sure the data is flowing */ + udelay(1); + + data[0] = cxdbg_read(cxdbg, REG_A6XX_CX_DBGC_CFG_DBGBUS_TRACE_BUF2); + data[1] = cxdbg_read(cxdbg, REG_A6XX_CX_DBGC_CFG_DBGBUS_TRACE_BUF1); + + return 2; +} + +/* Read a chunk of data from the VBIF debug bus */ +static int vbif_debugbus_read(struct msm_gpu *gpu, u32 ctrl0, u32 ctrl1, + u32 reg, int count, u32 *data) +{ + int i; + + gpu_write(gpu, ctrl0, reg); + + for (i = 0; i < count; i++) { + gpu_write(gpu, ctrl1, i); + data[i] = gpu_read(gpu, REG_A6XX_VBIF_TEST_BUS_OUT); + } + + return count; +} + +#define AXI_ARB_BLOCKS 2 +#define XIN_AXI_BLOCKS 5 +#define XIN_CORE_BLOCKS 4 + +#define VBIF_DEBUGBUS_BLOCK_SIZE \ + ((16 * AXI_ARB_BLOCKS) + \ + (18 * XIN_AXI_BLOCKS) + \ + (12 * XIN_CORE_BLOCKS)) + +static void a6xx_get_vbif_debugbus_block(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + struct a6xx_gpu_state_obj *obj) +{ + u32 clk, *ptr; + int i; + + obj->data = state_kcalloc(a6xx_state, VBIF_DEBUGBUS_BLOCK_SIZE, + sizeof(u32)); + if (!obj->data) + return; + + obj->handle = NULL; + + /* Get the current clock setting */ + clk = gpu_read(gpu, REG_A6XX_VBIF_CLKON); + + /* Force on the bus so we can read it */ + gpu_write(gpu, REG_A6XX_VBIF_CLKON, + clk | A6XX_VBIF_CLKON_FORCE_ON_TESTBUS); + + /* We will read from BUS2 first, so disable BUS1 */ + gpu_write(gpu, REG_A6XX_VBIF_TEST_BUS1_CTRL0, 0); + + /* Enable the VBIF bus for reading */ + gpu_write(gpu, REG_A6XX_VBIF_TEST_BUS_OUT_CTRL, 1); + + ptr = obj->data; + + for (i = 0; i < AXI_ARB_BLOCKS; i++) + ptr += vbif_debugbus_read(gpu, + REG_A6XX_VBIF_TEST_BUS2_CTRL0, + REG_A6XX_VBIF_TEST_BUS2_CTRL1, + 1 << (i + 16), 16, ptr); + + for (i = 0; i < XIN_AXI_BLOCKS; i++) + ptr += vbif_debugbus_read(gpu, + REG_A6XX_VBIF_TEST_BUS2_CTRL0, + REG_A6XX_VBIF_TEST_BUS2_CTRL1, + 1 << i, 18, ptr); + + /* Stop BUS2 so we can turn on BUS1 */ + gpu_write(gpu, REG_A6XX_VBIF_TEST_BUS2_CTRL0, 0); + + for (i = 0; i < XIN_CORE_BLOCKS; i++) + ptr += vbif_debugbus_read(gpu, + REG_A6XX_VBIF_TEST_BUS1_CTRL0, + REG_A6XX_VBIF_TEST_BUS1_CTRL1, + 1 << i, 12, ptr); + + /* Restore the VBIF clock setting */ + gpu_write(gpu, REG_A6XX_VBIF_CLKON, clk); +} + +static void a6xx_get_debugbus_block(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_debugbus_block *block, + struct a6xx_gpu_state_obj *obj) +{ + int i; + u32 *ptr; + + obj->data = state_kcalloc(a6xx_state, block->count, sizeof(u64)); + if (!obj->data) + return; + + obj->handle = block; + + for (ptr = obj->data, i = 0; i < block->count; i++) + ptr += debugbus_read(gpu, block->id, i, ptr); +} + +static void a6xx_get_cx_debugbus_block(void __iomem *cxdbg, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_debugbus_block *block, + struct a6xx_gpu_state_obj *obj) +{ + int i; + u32 *ptr; + + obj->data = state_kcalloc(a6xx_state, block->count, sizeof(u64)); + if (!obj->data) + return; + + obj->handle = block; + + for (ptr = obj->data, i = 0; i < block->count; i++) + ptr += cx_debugbus_read(cxdbg, block->id, i, ptr); +} + +static void a6xx_get_debugbus(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state) +{ + struct resource *res; + void __iomem *cxdbg = NULL; + + /* Set up the GX debug bus */ + + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_CNTLT, + A6XX_DBGC_CFG_DBGBUS_CNTLT_SEGT(0xf)); + + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_CNTLM, + A6XX_DBGC_CFG_DBGBUS_CNTLM_ENABLE(0xf)); + + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_0, 0); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_1, 0); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_2, 0); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_3, 0); + + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_BYTEL_0, 0x76543210); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_BYTEL_1, 0xFEDCBA98); + + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_0, 0); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_1, 0); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_2, 0); + gpu_write(gpu, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_3, 0); + + /* Set up the CX debug bus - it lives elsewhere in the system so do a + * temporary ioremap for the registers + */ + res = platform_get_resource_byname(gpu->pdev, IORESOURCE_MEM, + "cx_dbgc"); + + if (res) + cxdbg = ioremap(res->start, resource_size(res)); + + if (cxdbg) { + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_CNTLT, + A6XX_DBGC_CFG_DBGBUS_CNTLT_SEGT(0xf)); + + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_CNTLM, + A6XX_DBGC_CFG_DBGBUS_CNTLM_ENABLE(0xf)); + + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_0, 0); + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_1, 0); + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_2, 0); + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_IVTL_3, 0); + + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_BYTEL_0, + 0x76543210); + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_BYTEL_1, + 0xFEDCBA98); + + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_0, 0); + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_1, 0); + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_2, 0); + cxdbg_write(cxdbg, REG_A6XX_DBGC_CFG_DBGBUS_MASKL_3, 0); + } + + a6xx_state->debugbus = state_kcalloc(a6xx_state, + ARRAY_SIZE(a6xx_debugbus_blocks), + sizeof(*a6xx_state->debugbus)); + + if (a6xx_state->debugbus) { + int i; + + for (i = 0; i < ARRAY_SIZE(a6xx_debugbus_blocks); i++) + a6xx_get_debugbus_block(gpu, + a6xx_state, + &a6xx_debugbus_blocks[i], + &a6xx_state->debugbus[i]); + + a6xx_state->nr_debugbus = ARRAY_SIZE(a6xx_debugbus_blocks); + } + + a6xx_state->vbif_debugbus = + state_kcalloc(a6xx_state, 1, + sizeof(*a6xx_state->vbif_debugbus)); + + if (a6xx_state->vbif_debugbus) + a6xx_get_vbif_debugbus_block(gpu, a6xx_state, + a6xx_state->vbif_debugbus); + + if (cxdbg) { + a6xx_state->cx_debugbus = + state_kcalloc(a6xx_state, + ARRAY_SIZE(a6xx_cx_debugbus_blocks), + sizeof(*a6xx_state->cx_debugbus)); + + if (a6xx_state->cx_debugbus) { + int i; + + for (i = 0; i < ARRAY_SIZE(a6xx_cx_debugbus_blocks); i++) + a6xx_get_cx_debugbus_block(cxdbg, + a6xx_state, + &a6xx_cx_debugbus_blocks[i], + &a6xx_state->cx_debugbus[i]); + + a6xx_state->nr_cx_debugbus = + ARRAY_SIZE(a6xx_cx_debugbus_blocks); + } + + iounmap(cxdbg); + } +} + +#define RANGE(reg, a) ((reg)[(a) + 1] - (reg)[(a)] + 1) + +/* Read a data cluster from behind the AHB aperture */ +static void a6xx_get_dbgahb_cluster(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_dbgahb_cluster *dbgahb, + struct a6xx_gpu_state_obj *obj, + struct a6xx_crashdumper *dumper) +{ + u64 *in = dumper->ptr; + u64 out = dumper->iova + A6XX_CD_DATA_OFFSET; + size_t datasize; + int i, regcount = 0; + + for (i = 0; i < A6XX_NUM_CONTEXTS; i++) { + int j; + + in += CRASHDUMP_WRITE(in, REG_A6XX_HLSQ_DBG_READ_SEL, + (dbgahb->statetype + i * 2) << 8); + + for (j = 0; j < dbgahb->count; j += 2) { + int count = RANGE(dbgahb->registers, j); + u32 offset = REG_A6XX_HLSQ_DBG_AHB_READ_APERTURE + + dbgahb->registers[j] - (dbgahb->base >> 2); + + in += CRASHDUMP_READ(in, offset, count, out); + + out += count * sizeof(u32); + + if (i == 0) + regcount += count; + } + } + + CRASHDUMP_FINI(in); + + datasize = regcount * A6XX_NUM_CONTEXTS * sizeof(u32); + + if (WARN_ON(datasize > A6XX_CD_DATA_SIZE)) + return; + + if (a6xx_crashdumper_run(gpu, dumper)) + return; + + obj->handle = dbgahb; + obj->data = state_kmemdup(a6xx_state, dumper->ptr + A6XX_CD_DATA_OFFSET, + datasize); +} + +static void a6xx_get_dbgahb_clusters(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + struct a6xx_crashdumper *dumper) +{ + int i; + + a6xx_state->dbgahb_clusters = state_kcalloc(a6xx_state, + ARRAY_SIZE(a6xx_dbgahb_clusters), + sizeof(*a6xx_state->dbgahb_clusters)); + + if (!a6xx_state->dbgahb_clusters) + return; + + a6xx_state->nr_dbgahb_clusters = ARRAY_SIZE(a6xx_dbgahb_clusters); + + for (i = 0; i < ARRAY_SIZE(a6xx_dbgahb_clusters); i++) + a6xx_get_dbgahb_cluster(gpu, a6xx_state, + &a6xx_dbgahb_clusters[i], + &a6xx_state->dbgahb_clusters[i], dumper); +} + +/* Read a data cluster from the CP aperture with the crashdumper */ +static void a6xx_get_cluster(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_cluster *cluster, + struct a6xx_gpu_state_obj *obj, + struct a6xx_crashdumper *dumper) +{ + u64 *in = dumper->ptr; + u64 out = dumper->iova + A6XX_CD_DATA_OFFSET; + size_t datasize; + int i, regcount = 0; + + /* Some clusters need a selector register to be programmed too */ + if (cluster->sel_reg) + in += CRASHDUMP_WRITE(in, cluster->sel_reg, cluster->sel_val); + + for (i = 0; i < A6XX_NUM_CONTEXTS; i++) { + int j; + + in += CRASHDUMP_WRITE(in, REG_A6XX_CP_APERTURE_CNTL_CD, + (cluster->id << 8) | (i << 4) | i); + + for (j = 0; j < cluster->count; j += 2) { + int count = RANGE(cluster->registers, j); + + in += CRASHDUMP_READ(in, cluster->registers[j], + count, out); + + out += count * sizeof(u32); + + if (i == 0) + regcount += count; + } + } + + CRASHDUMP_FINI(in); + + datasize = regcount * A6XX_NUM_CONTEXTS * sizeof(u32); + + if (WARN_ON(datasize > A6XX_CD_DATA_SIZE)) + return; + + if (a6xx_crashdumper_run(gpu, dumper)) + return; + + obj->handle = cluster; + obj->data = state_kmemdup(a6xx_state, dumper->ptr + A6XX_CD_DATA_OFFSET, + datasize); +} + +static void a6xx_get_clusters(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + struct a6xx_crashdumper *dumper) +{ + int i; + + a6xx_state->clusters = state_kcalloc(a6xx_state, + ARRAY_SIZE(a6xx_clusters), sizeof(*a6xx_state->clusters)); + + if (!a6xx_state->clusters) + return; + + a6xx_state->nr_clusters = ARRAY_SIZE(a6xx_clusters); + + for (i = 0; i < ARRAY_SIZE(a6xx_clusters); i++) + a6xx_get_cluster(gpu, a6xx_state, &a6xx_clusters[i], + &a6xx_state->clusters[i], dumper); +} + +/* Read a shader / debug block from the HLSQ aperture with the crashdumper */ +static void a6xx_get_shader_block(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_shader_block *block, + struct a6xx_gpu_state_obj *obj, + struct a6xx_crashdumper *dumper) +{ + u64 *in = dumper->ptr; + size_t datasize = block->size * A6XX_NUM_SHADER_BANKS * sizeof(u32); + int i; + + if (WARN_ON(datasize > A6XX_CD_DATA_SIZE)) + return; + + for (i = 0; i < A6XX_NUM_SHADER_BANKS; i++) { + in += CRASHDUMP_WRITE(in, REG_A6XX_HLSQ_DBG_READ_SEL, + (block->type << 8) | i); + + in += CRASHDUMP_READ(in, REG_A6XX_HLSQ_DBG_AHB_READ_APERTURE, + block->size, dumper->iova + A6XX_CD_DATA_OFFSET); + } + + CRASHDUMP_FINI(in); + + if (a6xx_crashdumper_run(gpu, dumper)) + return; + + obj->handle = block; + obj->data = state_kmemdup(a6xx_state, dumper->ptr + A6XX_CD_DATA_OFFSET, + datasize); +} + +static void a6xx_get_shaders(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + struct a6xx_crashdumper *dumper) +{ + int i; + + a6xx_state->shaders = state_kcalloc(a6xx_state, + ARRAY_SIZE(a6xx_shader_blocks), sizeof(*a6xx_state->shaders)); + + if (!a6xx_state->shaders) + return; + + a6xx_state->nr_shaders = ARRAY_SIZE(a6xx_shader_blocks); + + for (i = 0; i < ARRAY_SIZE(a6xx_shader_blocks); i++) + a6xx_get_shader_block(gpu, a6xx_state, &a6xx_shader_blocks[i], + &a6xx_state->shaders[i], dumper); +} + +/* Read registers from behind the HLSQ aperture with the crashdumper */ +static void a6xx_get_crashdumper_hlsq_registers(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_registers *regs, + struct a6xx_gpu_state_obj *obj, + struct a6xx_crashdumper *dumper) + +{ + u64 *in = dumper->ptr; + u64 out = dumper->iova + A6XX_CD_DATA_OFFSET; + int i, regcount = 0; + + in += CRASHDUMP_WRITE(in, REG_A6XX_HLSQ_DBG_READ_SEL, regs->val1); + + for (i = 0; i < regs->count; i += 2) { + u32 count = RANGE(regs->registers, i); + u32 offset = REG_A6XX_HLSQ_DBG_AHB_READ_APERTURE + + regs->registers[i] - (regs->val0 >> 2); + + in += CRASHDUMP_READ(in, offset, count, out); + + out += count * sizeof(u32); + regcount += count; + } + + CRASHDUMP_FINI(in); + + if (WARN_ON((regcount * sizeof(u32)) > A6XX_CD_DATA_SIZE)) + return; + + if (a6xx_crashdumper_run(gpu, dumper)) + return; + + obj->handle = regs; + obj->data = state_kmemdup(a6xx_state, dumper->ptr + A6XX_CD_DATA_OFFSET, + regcount * sizeof(u32)); +} + +/* Read a block of registers using the crashdumper */ +static void a6xx_get_crashdumper_registers(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_registers *regs, + struct a6xx_gpu_state_obj *obj, + struct a6xx_crashdumper *dumper) + +{ + u64 *in = dumper->ptr; + u64 out = dumper->iova + A6XX_CD_DATA_OFFSET; + int i, regcount = 0; + + /* Some blocks might need to program a selector register first */ + if (regs->val0) + in += CRASHDUMP_WRITE(in, regs->val0, regs->val1); + + for (i = 0; i < regs->count; i += 2) { + u32 count = RANGE(regs->registers, i); + + in += CRASHDUMP_READ(in, regs->registers[i], count, out); + + out += count * sizeof(u32); + regcount += count; + } + + CRASHDUMP_FINI(in); + + if (WARN_ON((regcount * sizeof(u32)) > A6XX_CD_DATA_SIZE)) + return; + + if (a6xx_crashdumper_run(gpu, dumper)) + return; + + obj->handle = regs; + obj->data = state_kmemdup(a6xx_state, dumper->ptr + A6XX_CD_DATA_OFFSET, + regcount * sizeof(u32)); +} + +/* Read a block of registers via AHB */ +static void a6xx_get_ahb_gpu_registers(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_registers *regs, + struct a6xx_gpu_state_obj *obj) +{ + int i, regcount = 0, index = 0; + + for (i = 0; i < regs->count; i += 2) + regcount += RANGE(regs->registers, i); + + obj->handle = (const void *) regs; + obj->data = state_kcalloc(a6xx_state, regcount, sizeof(u32)); + if (!obj->data) + return; + + for (i = 0; i < regs->count; i += 2) { + u32 count = RANGE(regs->registers, i); + int j; + + for (j = 0; j < count; j++) + obj->data[index++] = gpu_read(gpu, + regs->registers[i] + j); + } +} + +/* Read a block of GMU registers */ +static void _a6xx_get_gmu_registers(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_registers *regs, + struct a6xx_gpu_state_obj *obj) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); + struct a6xx_gmu *gmu = &a6xx_gpu->gmu; + int i, regcount = 0, index = 0; + + for (i = 0; i < regs->count; i += 2) + regcount += RANGE(regs->registers, i); + + obj->handle = (const void *) regs; + obj->data = state_kcalloc(a6xx_state, regcount, sizeof(u32)); + if (!obj->data) + return; + + for (i = 0; i < regs->count; i += 2) { + u32 count = RANGE(regs->registers, i); + int j; + + for (j = 0; j < count; j++) + obj->data[index++] = gmu_read(gmu, + regs->registers[i] + j); + } +} + +static void a6xx_get_gmu_registers(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); + + a6xx_state->gmu_registers = state_kcalloc(a6xx_state, + 2, sizeof(*a6xx_state->gmu_registers)); + + if (!a6xx_state->gmu_registers) + return; + + a6xx_state->nr_gmu_registers = 2; + + /* Get the CX GMU registers from AHB */ + _a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[0], + &a6xx_state->gmu_registers[0]); + + if (!a6xx_gmu_gx_is_on(&a6xx_gpu->gmu)) + return; + + /* Set the fence to ALLOW mode so we can access the registers */ + gpu_write(gpu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0); + + _a6xx_get_gmu_registers(gpu, a6xx_state, &a6xx_gmu_reglist[1], + &a6xx_state->gmu_registers[1]); +} + +static void a6xx_get_registers(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + struct a6xx_crashdumper *dumper) +{ + int i, count = ARRAY_SIZE(a6xx_ahb_reglist) + + ARRAY_SIZE(a6xx_reglist) + + ARRAY_SIZE(a6xx_hlsq_reglist); + int index = 0; + + a6xx_state->registers = state_kcalloc(a6xx_state, + count, sizeof(*a6xx_state->registers)); + + if (!a6xx_state->registers) + return; + + a6xx_state->nr_registers = count; + + for (i = 0; i < ARRAY_SIZE(a6xx_ahb_reglist); i++) + a6xx_get_ahb_gpu_registers(gpu, + a6xx_state, &a6xx_ahb_reglist[i], + &a6xx_state->registers[index++]); + + for (i = 0; i < ARRAY_SIZE(a6xx_reglist); i++) + a6xx_get_crashdumper_registers(gpu, + a6xx_state, &a6xx_reglist[i], + &a6xx_state->registers[index++], + dumper); + + for (i = 0; i < ARRAY_SIZE(a6xx_hlsq_reglist); i++) + a6xx_get_crashdumper_hlsq_registers(gpu, + a6xx_state, &a6xx_hlsq_reglist[i], + &a6xx_state->registers[index++], + dumper); +} + +/* Read a block of data from an indexed register pair */ +static void a6xx_get_indexed_regs(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state, + const struct a6xx_indexed_registers *indexed, + struct a6xx_gpu_state_obj *obj) +{ + int i; + + obj->handle = (const void *) indexed; + obj->data = state_kcalloc(a6xx_state, indexed->count, sizeof(u32)); + if (!obj->data) + return; + + /* All the indexed banks start at address 0 */ + gpu_write(gpu, indexed->addr, 0); + + /* Read the data - each read increments the internal address by 1 */ + for (i = 0; i < indexed->count; i++) + obj->data[i] = gpu_read(gpu, indexed->data); +} + +static void a6xx_get_indexed_registers(struct msm_gpu *gpu, + struct a6xx_gpu_state *a6xx_state) +{ + u32 mempool_size; + int count = ARRAY_SIZE(a6xx_indexed_reglist) + 1; + int i; + + a6xx_state->indexed_regs = state_kcalloc(a6xx_state, count, + sizeof(a6xx_state->indexed_regs)); + if (!a6xx_state->indexed_regs) + return; + + for (i = 0; i < ARRAY_SIZE(a6xx_indexed_reglist); i++) + a6xx_get_indexed_regs(gpu, a6xx_state, &a6xx_indexed_reglist[i], + &a6xx_state->indexed_regs[i]); + + /* Set the CP mempool size to 0 to stabilize it while dumping */ + mempool_size = gpu_read(gpu, REG_A6XX_CP_MEM_POOL_SIZE); + gpu_write(gpu, REG_A6XX_CP_MEM_POOL_SIZE, 0); + + /* Get the contents of the CP mempool */ + a6xx_get_indexed_regs(gpu, a6xx_state, &a6xx_cp_mempool_indexed, + &a6xx_state->indexed_regs[i]); + + /* + * Offset 0x2000 in the mempool is the size - copy the saved size over + * so the data is consistent + */ + a6xx_state->indexed_regs[i].data[0x2000] = mempool_size; + + /* Restore the size in the hardware */ + gpu_write(gpu, REG_A6XX_CP_MEM_POOL_SIZE, mempool_size); + + a6xx_state->nr_indexed_regs = count; +} + +struct msm_gpu_state *a6xx_gpu_state_get(struct msm_gpu *gpu) +{ + struct a6xx_crashdumper dumper = { 0 }; + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu); + struct a6xx_gpu_state *a6xx_state = kzalloc(sizeof(*a6xx_state), + GFP_KERNEL); + + if (!a6xx_state) + return ERR_PTR(-ENOMEM); + + INIT_LIST_HEAD(&a6xx_state->objs); + + /* Get the generic state from the adreno core */ + adreno_gpu_state_get(gpu, &a6xx_state->base); + + a6xx_get_gmu_registers(gpu, a6xx_state); + + /* If GX isn't on the rest of the data isn't going to be accessible */ + if (!a6xx_gmu_gx_is_on(&a6xx_gpu->gmu)) + return &a6xx_state->base; + + /* Get the banks of indexed registers */ + a6xx_get_indexed_registers(gpu, a6xx_state); + + /* Try to initialize the crashdumper */ + if (!a6xx_crashdumper_init(gpu, &dumper)) { + a6xx_get_registers(gpu, a6xx_state, &dumper); + a6xx_get_shaders(gpu, a6xx_state, &dumper); + a6xx_get_clusters(gpu, a6xx_state, &dumper); + a6xx_get_dbgahb_clusters(gpu, a6xx_state, &dumper); + + msm_gem_kernel_put(dumper.bo, gpu->aspace, true); + } + + a6xx_get_debugbus(gpu, a6xx_state); + + return &a6xx_state->base; +} + +void a6xx_gpu_state_destroy(struct kref *kref) +{ + struct a6xx_state_memobj *obj, *tmp; + struct msm_gpu_state *state = container_of(kref, + struct msm_gpu_state, ref); + struct a6xx_gpu_state *a6xx_state = container_of(state, + struct a6xx_gpu_state, base); + + list_for_each_entry_safe(obj, tmp, &a6xx_state->objs, node) + kfree(obj); + + adreno_gpu_state_destroy(state); + kfree(a6xx_state); +} + +int a6xx_gpu_state_put(struct msm_gpu_state *state) +{ + if (IS_ERR_OR_NULL(state)) + return 1; + + return kref_put(&state->ref, a6xx_gpu_state_destroy); +} + +static void a6xx_show_registers(const u32 *registers, u32 *data, size_t count, + struct drm_printer *p) +{ + int i, index = 0; + + if (!data) + return; + + for (i = 0; i < count; i += 2) { + u32 count = RANGE(registers, i); + u32 offset = registers[i]; + int j; + + for (j = 0; j < count; index++, offset++, j++) { + if (data[index] == 0xdeafbead) + continue; + + drm_printf(p, " - { offset: 0x%06x, value: 0x%08x }\n", + offset << 2, data[index]); + } + } +} + +static void print_ascii85(struct drm_printer *p, size_t len, u32 *data) +{ + char out[ASCII85_BUFSZ]; + long i, l, datalen = 0; + + for (i = 0; i < len >> 2; i++) { + if (data[i]) + datalen = (i + 1) << 2; + } + + if (datalen == 0) + return; + + drm_puts(p, " data: !!ascii85 |\n"); + drm_puts(p, " "); + + + l = ascii85_encode_len(datalen); + + for (i = 0; i < l; i++) + drm_puts(p, ascii85_encode(data[i], out)); + + drm_puts(p, "\n"); +} + +static void print_name(struct drm_printer *p, const char *fmt, const char *name) +{ + drm_puts(p, fmt); + drm_puts(p, name); + drm_puts(p, "\n"); +} + +static void a6xx_show_shader(struct a6xx_gpu_state_obj *obj, + struct drm_printer *p) +{ + const struct a6xx_shader_block *block = obj->handle; + int i; + + if (!obj->handle) + return; + + print_name(p, " - type: ", block->name); + + for (i = 0; i < A6XX_NUM_SHADER_BANKS; i++) { + drm_printf(p, " - bank: %d\n", i); + drm_printf(p, " size: %d\n", block->size); + + if (!obj->data) + continue; + + print_ascii85(p, block->size << 2, + obj->data + (block->size * i)); + } +} + +static void a6xx_show_cluster_data(const u32 *registers, int size, u32 *data, + struct drm_printer *p) +{ + int ctx, index = 0; + + for (ctx = 0; ctx < A6XX_NUM_CONTEXTS; ctx++) { + int j; + + drm_printf(p, " - context: %d\n", ctx); + + for (j = 0; j < size; j += 2) { + u32 count = RANGE(registers, j); + u32 offset = registers[j]; + int k; + + for (k = 0; k < count; index++, offset++, k++) { + if (data[index] == 0xdeafbead) + continue; + + drm_printf(p, " - { offset: 0x%06x, value: 0x%08x }\n", + offset << 2, data[index]); + } + } + } +} + +static void a6xx_show_dbgahb_cluster(struct a6xx_gpu_state_obj *obj, + struct drm_printer *p) +{ + const struct a6xx_dbgahb_cluster *dbgahb = obj->handle; + + if (dbgahb) { + print_name(p, " - cluster-name: ", dbgahb->name); + a6xx_show_cluster_data(dbgahb->registers, dbgahb->count, + obj->data, p); + } +} + +static void a6xx_show_cluster(struct a6xx_gpu_state_obj *obj, + struct drm_printer *p) +{ + const struct a6xx_cluster *cluster = obj->handle; + + if (cluster) { + print_name(p, " - cluster-name: ", cluster->name); + a6xx_show_cluster_data(cluster->registers, cluster->count, + obj->data, p); + } +} + +static void a6xx_show_indexed_regs(struct a6xx_gpu_state_obj *obj, + struct drm_printer *p) +{ + const struct a6xx_indexed_registers *indexed = obj->handle; + + if (!indexed) + return; + + print_name(p, " - regs-name: ", indexed->name); + drm_printf(p, " dwords: %d\n", indexed->count); + + print_ascii85(p, indexed->count << 2, obj->data); +} + +static void a6xx_show_debugbus_block(const struct a6xx_debugbus_block *block, + u32 *data, struct drm_printer *p) +{ + if (block) { + print_name(p, " - debugbus-block: ", block->name); + + /* + * count for regular debugbus data is in quadwords, + * but print the size in dwords for consistency + */ + drm_printf(p, " count: %d\n", block->count << 1); + + print_ascii85(p, block->count << 3, data); + } +} + +static void a6xx_show_debugbus(struct a6xx_gpu_state *a6xx_state, + struct drm_printer *p) +{ + int i; + + for (i = 0; i < a6xx_state->nr_debugbus; i++) { + struct a6xx_gpu_state_obj *obj = &a6xx_state->debugbus[i]; + + a6xx_show_debugbus_block(obj->handle, obj->data, p); + } + + if (a6xx_state->vbif_debugbus) { + struct a6xx_gpu_state_obj *obj = a6xx_state->vbif_debugbus; + + drm_puts(p, " - debugbus-block: A6XX_DBGBUS_VBIF\n"); + drm_printf(p, " count: %d\n", VBIF_DEBUGBUS_BLOCK_SIZE); + + /* vbif debugbus data is in dwords. Confusing, huh? */ + print_ascii85(p, VBIF_DEBUGBUS_BLOCK_SIZE << 2, obj->data); + } + + for (i = 0; i < a6xx_state->nr_cx_debugbus; i++) { + struct a6xx_gpu_state_obj *obj = &a6xx_state->cx_debugbus[i]; + + a6xx_show_debugbus_block(obj->handle, obj->data, p); + } +} + +void a6xx_show(struct msm_gpu *gpu, struct msm_gpu_state *state, + struct drm_printer *p) +{ + struct a6xx_gpu_state *a6xx_state = container_of(state, + struct a6xx_gpu_state, base); + int i; + + if (IS_ERR_OR_NULL(state)) + return; + + adreno_show(gpu, state, p); + + drm_puts(p, "registers:\n"); + for (i = 0; i < a6xx_state->nr_registers; i++) { + struct a6xx_gpu_state_obj *obj = &a6xx_state->registers[i]; + const struct a6xx_registers *regs = obj->handle; + + if (!obj->handle) + continue; + + a6xx_show_registers(regs->registers, obj->data, regs->count, p); + } + + drm_puts(p, "registers-gmu:\n"); + for (i = 0; i < a6xx_state->nr_gmu_registers; i++) { + struct a6xx_gpu_state_obj *obj = &a6xx_state->gmu_registers[i]; + const struct a6xx_registers *regs = obj->handle; + + if (!obj->handle) + continue; + + a6xx_show_registers(regs->registers, obj->data, regs->count, p); + } + + drm_puts(p, "indexed-registers:\n"); + for (i = 0; i < a6xx_state->nr_indexed_regs; i++) + a6xx_show_indexed_regs(&a6xx_state->indexed_regs[i], p); + + drm_puts(p, "shader-blocks:\n"); + for (i = 0; i < a6xx_state->nr_shaders; i++) + a6xx_show_shader(&a6xx_state->shaders[i], p); + + drm_puts(p, "clusters:\n"); + for (i = 0; i < a6xx_state->nr_clusters; i++) + a6xx_show_cluster(&a6xx_state->clusters[i], p); + + for (i = 0; i < a6xx_state->nr_dbgahb_clusters; i++) + a6xx_show_dbgahb_cluster(&a6xx_state->dbgahb_clusters[i], p); + + drm_puts(p, "debugbus:\n"); + a6xx_show_debugbus(a6xx_state, p); +} |