diff options
Diffstat (limited to 'gxp-debug-dump.c')
| -rw-r--r-- | gxp-debug-dump.c | 137 |
1 files changed, 98 insertions, 39 deletions
diff --git a/gxp-debug-dump.c b/gxp-debug-dump.c index 94ae78b..4df7add 100644 --- a/gxp-debug-dump.c +++ b/gxp-debug-dump.c @@ -14,17 +14,16 @@ #include <linux/string.h> #include <linux/workqueue.h> -#if IS_ENABLED(CONFIG_GXP_TEST) || IS_ENABLED(CONFIG_SUBSYSTEM_COREDUMP) -#include <linux/platform_data/sscoredump.h> -#endif - #include <gcip/gcip-pm.h> +#include <gcip/gcip-alloc-helper.h> #include "gxp-client.h" #include "gxp-debug-dump.h" #include "gxp-dma.h" #include "gxp-doorbell.h" #include "gxp-firmware.h" +#include "gxp-firmware-data.h" +#include "gxp-firmware-loader.h" #include "gxp-host-device-structs.h" #include "gxp-internal.h" #include "gxp-lpm.h" @@ -32,6 +31,10 @@ #include "gxp-pm.h" #include "gxp-vd.h" +#if HAS_COREDUMP +#include <linux/platform_data/sscoredump.h> +#endif + #define SSCD_MSG_LENGTH 64 #define SYNC_BARRIER_BLOCK 0x00100000 @@ -39,6 +42,13 @@ #define DEBUG_DUMP_MEMORY_SIZE 0x400000 /* size in bytes */ +/* + * CORE_FIRMWARE_RW_STRIDE & CORE_FIRMWARE_RW_ADDR must match with their + * values defind in core firmware image config. + */ +#define CORE_FIRMWARE_RW_STRIDE 0x200000 /* 2 MB */ +#define CORE_FIRMWARE_RW_ADDR(x) (0xFA400000 + CORE_FIRMWARE_RW_STRIDE * x) + /* Enum indicating the debug dump request reason. */ enum gxp_debug_dump_init_type { DEBUG_DUMP_FW_INIT, DEBUG_DUMP_KERNEL_INIT }; @@ -301,7 +311,7 @@ static int gxp_get_common_dump(struct gxp_dev *gxp) return ret; } -#if IS_ENABLED(CONFIG_GXP_TEST) || IS_ENABLED(CONFIG_SUBSYSTEM_COREDUMP) +#if HAS_COREDUMP static void gxp_send_to_sscd(struct gxp_dev *gxp, void *segs, int seg_cnt, const char *info) { @@ -454,7 +464,62 @@ static int gxp_user_buffers_vmap(struct gxp_dev *gxp, out: return cnt; } -#endif + +/** + * gxp_map_fw_rw_section() - Maps the fw rw section address and size to be + * sent to sscd module for taking the dump. + * @gxp: The GXP device. + * @vd: vd of the crashed client. + * @core_id: physical core_id of crashed core. + * @seg_idx: Pointer to a index that is keeping track of + * gxp->debug_dump_mgr->segs[] array. + * + * This function parses the ns_regions of the given vd to find + * fw_rw_section details. + * + * Return: + * * 0 - Successfully mapped fw_rw_section data. + * * -EOPNOTSUPP - Operation not supported for invalid image config. + * * -ENXIO - No IOVA found for the fw_rw_section. + */ +static int gxp_map_fw_rw_section(struct gxp_dev *gxp, + struct gxp_virtual_device *vd, + uint32_t core_id, int *seg_idx) +{ + size_t idx; + struct sg_table *sgt; + struct gxp_debug_dump_manager *mgr = gxp->debug_dump_mgr; + dma_addr_t fw_rw_section_daddr = CORE_FIRMWARE_RW_ADDR(core_id); + const size_t n_reg = ARRAY_SIZE(vd->ns_regions); + + if (!gxp_fw_data_use_per_vd_config(vd)) { + dev_err(gxp->dev, "Unsupported Image config version = %d.", + gxp->fw_loader_mgr->core_img_cfg.config_version); + return -EOPNOTSUPP; + } + + for (idx = 0; idx < n_reg; idx++) { + sgt = vd->ns_regions[idx].sgt; + if (!sgt) + break; + + if (fw_rw_section_daddr != vd->ns_regions[idx].daddr) + continue; + + mgr->segs[core_id][*seg_idx].addr = + gcip_noncontiguous_sgt_to_mem(sgt); + mgr->segs[core_id][*seg_idx].size = gcip_ns_config_to_size( + gxp->fw_loader_mgr->core_img_cfg.ns_iommu_mappings[idx]); + *seg_idx += 1; + return 0; + } + dev_err(gxp->dev, + "fw_rw_section mapping for core %u at iova 0x%llx does not exist", + core_id, fw_rw_section_daddr); + return -ENXIO; +} + +#endif /* HAS_COREDUMP */ void gxp_debug_dump_invalidate_segments(struct gxp_dev *gxp, uint32_t core_id) { @@ -505,7 +570,7 @@ static int gxp_handle_debug_dump(struct gxp_dev *gxp, &core_dump->core_dump_header[core_id]; struct gxp_core_header *core_header = &core_dump_header->core_header; int ret = 0; -#if IS_ENABLED(CONFIG_GXP_TEST) || IS_ENABLED(CONFIG_SUBSYSTEM_COREDUMP) +#if HAS_COREDUMP struct gxp_common_dump *common_dump = mgr->common_dump; int i; int seg_idx = 0; @@ -513,7 +578,7 @@ static int gxp_handle_debug_dump(struct gxp_dev *gxp, char sscd_msg[SSCD_MSG_LENGTH]; void *user_buf_vaddrs[GXP_NUM_BUFFER_MAPPINGS]; int user_buf_cnt; -#endif +#endif /* HAS_COREDUMP */ /* Core */ if (!core_header->dump_available) { @@ -522,7 +587,7 @@ static int gxp_handle_debug_dump(struct gxp_dev *gxp, goto out; } -#if IS_ENABLED(CONFIG_GXP_TEST) || IS_ENABLED(CONFIG_SUBSYSTEM_COREDUMP) +#if HAS_COREDUMP /* Common */ data_addr = &common_dump->common_dump_data.common_regs; for (i = 0; i < GXP_NUM_COMMON_SEGMENTS; i++) { @@ -571,14 +636,16 @@ static int gxp_handle_debug_dump(struct gxp_dev *gxp, ret = -EFAULT; goto out_efault; } - /* - * TODO(b/265105909): Implement the logic for collecting fw rw section - * separately for mcu mode. - */ + /* fw ro section */ mgr->segs[core_id][seg_idx].addr = gxp->fwbufs[core_id].vaddr; - mgr->segs[core_id][seg_idx].size = gxp->fwbufs[core_id].size; + mgr->segs[core_id][seg_idx].size = vd->fw_ro_size; seg_idx++; + /* fw rw section */ + ret = gxp_map_fw_rw_section(gxp, vd, core_id, &seg_idx); + if (ret) + goto out; + /* User Buffers */ user_buf_cnt = gxp_user_buffers_vmap(gxp, vd, core_header, user_buf_vaddrs); @@ -605,7 +672,7 @@ out_efault: gxp_user_buffers_vunmap(gxp, vd, core_header); } -#endif +#endif /* HAS_COREDUMP */ out: gxp_debug_dump_invalidate_segments(gxp, core_id); @@ -615,7 +682,7 @@ out: static int gxp_init_segments(struct gxp_dev *gxp) { -#if !(IS_ENABLED(CONFIG_GXP_TEST) || IS_ENABLED(CONFIG_SUBSYSTEM_COREDUMP)) +#if !HAS_COREDUMP return 0; #else struct gxp_debug_dump_manager *mgr = gxp->debug_dump_mgr; @@ -625,7 +692,7 @@ static int gxp_init_segments(struct gxp_dev *gxp) return -ENOMEM; return 0; -#endif +#endif /* HAS_COREDUMP */ } /* @@ -663,23 +730,12 @@ out: static void gxp_generate_debug_dump(struct gxp_dev *gxp, uint core_id, struct gxp_virtual_device *vd) { - u32 boot_mode; - bool gxp_generate_coredump_called = false; - + bool gxp_generate_coredump_called = true; mutex_lock(&gxp->debug_dump_mgr->debug_dump_lock); - /* - * TODO(b/265105909): Checks below to be verified after implementation for - * firmware loading for mcu mode are completed. - */ - boot_mode = gxp_firmware_get_boot_mode(gxp, vd, core_id); - - if (gxp_is_fw_running(gxp, core_id) && - (boot_mode == GXP_BOOT_MODE_STATUS_COLD_BOOT_COMPLETED || - boot_mode == GXP_BOOT_MODE_STATUS_RESUME_COMPLETED)) { - gxp_generate_coredump_called = true; - if (gxp_generate_coredump(gxp, vd, core_id)) - dev_err(gxp->dev, "Failed to generate coredump\n"); + if (gxp_generate_coredump(gxp, vd, core_id)) { + gxp_generate_coredump_called = false; + dev_err(gxp->dev, "Failed to generate the coredump.\n"); } /* Invalidate segments to prepare for the next debug dump trigger */ @@ -706,8 +762,14 @@ static void gxp_debug_dump_process_dump_direct_mode(struct work_struct *work) struct gxp_virtual_device *vd = NULL; down_read(&gxp->vd_semaphore); - if (gxp->core_to_vd[core_id]) + if (gxp->core_to_vd[core_id]) { vd = gxp_vd_get(gxp->core_to_vd[core_id]); + } else { + dev_err(gxp->dev, "debug dump failed for null vd on core %d.", + core_id); + up_read(&gxp->vd_semaphore); + return; + } up_read(&gxp->vd_semaphore); /* @@ -715,15 +777,12 @@ static void gxp_debug_dump_process_dump_direct_mode(struct work_struct *work) * of @vd while generating a debug dump. This will help not to block other virtual devices * proceeding their jobs. */ - if (vd) - mutex_lock(&vd->debug_dump_lock); + mutex_lock(&vd->debug_dump_lock); gxp_generate_debug_dump(gxp, core_id, vd); - if (vd) { - mutex_unlock(&vd->debug_dump_lock); - gxp_vd_put(vd); - } + mutex_unlock(&vd->debug_dump_lock); + gxp_vd_put(vd); } int gxp_debug_dump_process_dump_mcu_mode(struct gxp_dev *gxp, uint core_list, |