diff options
author | Oded Gabbay <oded.gabbay@gmail.com> | 2019-02-16 01:39:24 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-18 11:46:46 +0300 |
commit | c216477363a37a7d0a388315a2eb6c1bd965bdb8 (patch) | |
tree | 908c21b4d3e5b7b1ac735f08a3bce586262d6030 | |
parent | d8dd7b0a81cc192ef5d30ec76ed6f6d35a1a7cf5 (diff) | |
download | linux-c216477363a37a7d0a388315a2eb6c1bd965bdb8.tar.xz |
habanalabs: add debugfs support
This patch adds debugfs support to the driver. It allows the user-space to
display information that is contained in the internal structures of the
driver, such as:
- active command submissions
- active user virtual memory mappings
- number of allocated command buffers
It also enables the user to perform reads and writes through Goya's PCI
bars.
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | Documentation/ABI/testing/debugfs-driver-habanalabs | 126 | ||||
-rw-r--r-- | drivers/misc/habanalabs/Makefile | 2 | ||||
-rw-r--r-- | drivers/misc/habanalabs/command_buffer.c | 4 | ||||
-rw-r--r-- | drivers/misc/habanalabs/command_submission.c | 12 | ||||
-rw-r--r-- | drivers/misc/habanalabs/debugfs.c | 1072 | ||||
-rw-r--r-- | drivers/misc/habanalabs/device.c | 6 | ||||
-rw-r--r-- | drivers/misc/habanalabs/goya/goya.c | 108 | ||||
-rw-r--r-- | drivers/misc/habanalabs/goya/goyaP.h | 5 | ||||
-rw-r--r-- | drivers/misc/habanalabs/habanalabs.h | 189 | ||||
-rw-r--r-- | drivers/misc/habanalabs/habanalabs_drv.c | 16 | ||||
-rw-r--r-- | drivers/misc/habanalabs/memory.c | 8 |
11 files changed, 1546 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs new file mode 100644 index 000000000000..2f5b80be07a3 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-driver-habanalabs @@ -0,0 +1,126 @@ +What: /sys/kernel/debug/habanalabs/hl<n>/addr +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets the device address to be used for read or write through + PCI bar. The acceptable value is a string that starts with "0x" + +What: /sys/kernel/debug/habanalabs/hl<n>/command_buffers +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Displays a list with information about the currently allocated + command buffers + +What: /sys/kernel/debug/habanalabs/hl<n>/command_submission +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Displays a list with information about the currently active + command submissions + +What: /sys/kernel/debug/habanalabs/hl<n>/command_submission_jobs +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Displays a list with detailed information about each JOB (CB) of + each active command submission + +What: /sys/kernel/debug/habanalabs/hl<n>/data32 +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Allows the root user to read or write directly through the + device's PCI bar. Writing to this file generates a write + transaction while reading from the file generates a read + transcation. This custom interface is needed (instead of using + the generic Linux user-space PCI mapping) because the DDR bar + is very small compared to the DDR memory and only the driver can + move the bar before and after the transaction + +What: /sys/kernel/debug/habanalabs/hl<n>/device +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Enables the root user to set the device to specific state. + Valid values are "disable", "enable", "suspend", "resume". + User can read this property to see the valid values + +What: /sys/kernel/debug/habanalabs/hl<n>/i2c_addr +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets I2C device address for I2C transaction that is generated + by the device's CPU + +What: /sys/kernel/debug/habanalabs/hl<n>/i2c_bus +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets I2C bus address for I2C transaction that is generated by + the device's CPU + +What: /sys/kernel/debug/habanalabs/hl<n>/i2c_data +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Triggers an I2C transaction that is generated by the device's + CPU. Writing to this file generates a write transaction while + reading from the file generates a read transcation + +What: /sys/kernel/debug/habanalabs/hl<n>/i2c_reg +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets I2C register id for I2C transaction that is generated by + the device's CPU + +What: /sys/kernel/debug/habanalabs/hl<n>/led0 +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets the state of the first S/W led on the device + +What: /sys/kernel/debug/habanalabs/hl<n>/led1 +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets the state of the second S/W led on the device + +What: /sys/kernel/debug/habanalabs/hl<n>/led2 +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets the state of the third S/W led on the device + +What: /sys/kernel/debug/habanalabs/hl<n>/mmu +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Displays the hop values and physical address for a given ASID + and virtual address. The user should write the ASID and VA into + the file and then read the file to get the result. + e.g. to display info about VA 0x1000 for ASID 1 you need to do: + echo "1 0x1000" > /sys/kernel/debug/habanalabs/hl0/mmu + +What: /sys/kernel/debug/habanalabs/hl<n>/set_power_state +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Sets the PCI power state. Valid values are "1" for D0 and "2" + for D3Hot + +What: /sys/kernel/debug/habanalabs/hl<n>/userptr +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Displays a list with information about the currently user + pointers (user virtual addresses) that are pinned and mapped + to DMA addresses + +What: /sys/kernel/debug/habanalabs/hl<n>/vm +Date: Jan 2019 +KernelVersion: 5.1 +Contact: oded.gabbay@gmail.com +Description: Displays a list with information about all the active virtual + address mappings per ASID diff --git a/drivers/misc/habanalabs/Makefile b/drivers/misc/habanalabs/Makefile index fd46f8b48bab..c6592db59b25 100644 --- a/drivers/misc/habanalabs/Makefile +++ b/drivers/misc/habanalabs/Makefile @@ -8,5 +8,7 @@ habanalabs-y := habanalabs_drv.o device.o context.o asid.o habanalabs_ioctl.o \ command_buffer.o hw_queue.o irq.o sysfs.o hwmon.o memory.o \ command_submission.o mmu.o +habanalabs-$(CONFIG_DEBUG_FS) += debugfs.o + include $(src)/goya/Makefile habanalabs-y += $(HL_GOYA_FILES) diff --git a/drivers/misc/habanalabs/command_buffer.c b/drivers/misc/habanalabs/command_buffer.c index 1e90025204c0..28e359731fb8 100644 --- a/drivers/misc/habanalabs/command_buffer.c +++ b/drivers/misc/habanalabs/command_buffer.c @@ -38,6 +38,8 @@ static void cb_release(struct kref *ref) cb = container_of(ref, struct hl_cb, refcount); hdev = cb->hdev; + hl_debugfs_remove_cb(cb); + cb_do_release(hdev, cb); } @@ -163,6 +165,8 @@ int hl_cb_create(struct hl_device *hdev, struct hl_cb_mgr *mgr, *handle = cb->id | HL_MMAP_CB_MASK; *handle <<= PAGE_SHIFT; + hl_debugfs_add_cb(cb); + return 0; release_cb: diff --git a/drivers/misc/habanalabs/command_submission.c b/drivers/misc/habanalabs/command_submission.c index ae68b97e428d..25ad9d805cfa 100644 --- a/drivers/misc/habanalabs/command_submission.c +++ b/drivers/misc/habanalabs/command_submission.c @@ -149,6 +149,8 @@ static void free_job(struct hl_device *hdev, struct hl_cs_job *job) list_del(&job->cs_node); spin_unlock(&cs->job_lock); + hl_debugfs_remove_job(hdev, job); + if (job->ext_queue) cs_put(cs); @@ -212,6 +214,12 @@ static void cs_do_release(struct kref *ref) } } + /* + * Must be called before hl_ctx_put because inside we use ctx to get + * the device + */ + hl_debugfs_remove_cs(cs); + hl_ctx_put(cs->ctx); if (cs->timedout) @@ -480,6 +488,8 @@ static int _hl_cs_ioctl(struct hl_fpriv *hpriv, void __user *chunks, *cs_seq = cs->sequence; + hl_debugfs_add_cs(cs); + /* Validate ALL the CS chunks before submitting the CS */ for (i = 0, parse_cnt = 0 ; i < num_chunks ; i++, parse_cnt++) { struct hl_cs_chunk *chunk = &cs_chunk_array[i]; @@ -528,6 +538,8 @@ static int _hl_cs_ioctl(struct hl_fpriv *hpriv, void __user *chunks, if (job->ext_queue) cs_get(cs); + hl_debugfs_add_job(hdev, job); + rc = cs_parser(hpriv, job); if (rc) { dev_err(hdev->dev, diff --git a/drivers/misc/habanalabs/debugfs.c b/drivers/misc/habanalabs/debugfs.c new file mode 100644 index 000000000000..a6d9d809385e --- /dev/null +++ b/drivers/misc/habanalabs/debugfs.c @@ -0,0 +1,1072 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Copyright 2016-2019 HabanaLabs, Ltd. + * All Rights Reserved. + */ + +#include "habanalabs.h" +#include "include/hw_ip/mmu/mmu_general.h" + +#include <linux/pci.h> +#include <linux/debugfs.h> +#include <linux/uaccess.h> + +#define MMU_ADDR_BUF_SIZE 40 +#define MMU_ASID_BUF_SIZE 10 +#define MMU_KBUF_SIZE (MMU_ADDR_BUF_SIZE + MMU_ASID_BUF_SIZE) + +static struct dentry *hl_debug_root; + +static int hl_debugfs_i2c_read(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr, + u8 i2c_reg, u32 *val) +{ + struct armcp_packet pkt; + int rc; + + if (hl_device_disabled_or_in_reset(hdev)) + return 0; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = ARMCP_PACKET_I2C_RD << ARMCP_PKT_CTL_OPCODE_SHIFT; + pkt.i2c_bus = i2c_bus; + pkt.i2c_addr = i2c_addr; + pkt.i2c_reg = i2c_reg; + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + HL_DEVICE_TIMEOUT_USEC, (long *) val); + + if (rc) + dev_err(hdev->dev, "Failed to read from I2C, error %d\n", rc); + + return rc; +} + +static int hl_debugfs_i2c_write(struct hl_device *hdev, u8 i2c_bus, u8 i2c_addr, + u8 i2c_reg, u32 val) +{ + struct armcp_packet pkt; + int rc; + + if (hl_device_disabled_or_in_reset(hdev)) + return 0; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = ARMCP_PACKET_I2C_WR << ARMCP_PKT_CTL_OPCODE_SHIFT; + pkt.i2c_bus = i2c_bus; + pkt.i2c_addr = i2c_addr; + pkt.i2c_reg = i2c_reg; + pkt.value = val; + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + HL_DEVICE_TIMEOUT_USEC, NULL); + + if (rc) + dev_err(hdev->dev, "Failed to write to I2C, error %d\n", rc); + + return rc; +} + +static void hl_debugfs_led_set(struct hl_device *hdev, u8 led, u8 state) +{ + struct armcp_packet pkt; + int rc; + + if (hl_device_disabled_or_in_reset(hdev)) + return; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = ARMCP_PACKET_LED_SET << ARMCP_PKT_CTL_OPCODE_SHIFT; + pkt.led_index = led; + pkt.value = state; + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + HL_DEVICE_TIMEOUT_USEC, NULL); + + if (rc) + dev_err(hdev->dev, "Failed to set LED %d, error %d\n", led, rc); +} + +static int command_buffers_show(struct seq_file *s, void *data) +{ + struct hl_debugfs_entry *entry = s->private; + struct hl_dbg_device_entry *dev_entry = entry->dev_entry; + struct hl_cb *cb; + bool first = true; + + spin_lock(&dev_entry->cb_spinlock); + + list_for_each_entry(cb, &dev_entry->cb_list, debugfs_list) { + if (first) { + first = false; + seq_puts(s, "\n"); + seq_puts(s, " CB ID CTX ID CB size CB RefCnt mmap? CS counter\n"); + seq_puts(s, "---------------------------------------------------------------\n"); + } + seq_printf(s, + " %03d %d 0x%08x %d %d %d\n", + cb->id, cb->ctx_id, cb->size, + kref_read(&cb->refcount), + cb->mmap, cb->cs_cnt); + } + + spin_unlock(&dev_entry->cb_spinlock); + + if (!first) + seq_puts(s, "\n"); + + return 0; +} + +static int command_submission_show(struct seq_file *s, void *data) +{ + struct hl_debugfs_entry *entry = s->private; + struct hl_dbg_device_entry *dev_entry = entry->dev_entry; + struct hl_cs *cs; + bool first = true; + + spin_lock(&dev_entry->cs_spinlock); + + list_for_each_entry(cs, &dev_entry->cs_list, debugfs_list) { + if (first) { + first = false; + seq_puts(s, "\n"); + seq_puts(s, " CS ID CTX ASID CS RefCnt Submitted Completed\n"); + seq_puts(s, "------------------------------------------------------\n"); + } + seq_printf(s, + " %llu %d %d %d %d\n", + cs->sequence, cs->ctx->asid, + kref_read(&cs->refcount), + cs->submitted, cs->completed); + } + + spin_unlock(&dev_entry->cs_spinlock); + + if (!first) + seq_puts(s, "\n"); + + return 0; +} + +static int command_submission_jobs_show(struct seq_file *s, void *data) +{ + struct hl_debugfs_entry *entry = s->private; + struct hl_dbg_device_entry *dev_entry = entry->dev_entry; + struct hl_cs_job *job; + bool first = true; + + spin_lock(&dev_entry->cs_job_spinlock); + + list_for_each_entry(job, &dev_entry->cs_job_list, debugfs_list) { + if (first) { + first = false; + seq_puts(s, "\n"); + seq_puts(s, " JOB ID CS ID CTX ASID H/W Queue\n"); + seq_puts(s, "---------------------------------------\n"); + } + if (job->cs) + seq_printf(s, + " %02d %llu %d %d\n", + job->id, job->cs->sequence, job->cs->ctx->asid, + job->hw_queue_id); + else + seq_printf(s, + " %02d 0 %d %d\n", + job->id, HL_KERNEL_ASID_ID, job->hw_queue_id); + } + + spin_unlock(&dev_entry->cs_job_spinlock); + + if (!first) + seq_puts(s, "\n"); + + return 0; +} + +static int userptr_show(struct seq_file *s, void *data) +{ + struct hl_debugfs_entry *entry = s->private; + struct hl_dbg_device_entry *dev_entry = entry->dev_entry; + struct hl_userptr *userptr; + char dma_dir[4][30] = {"DMA_BIDIRECTIONAL", "DMA_TO_DEVICE", + "DMA_FROM_DEVICE", "DMA_NONE"}; + bool first = true; + + spin_lock(&dev_entry->userptr_spinlock); + + list_for_each_entry(userptr, &dev_entry->userptr_list, debugfs_list) { + if (first) { + first = false; + seq_puts(s, "\n"); + seq_puts(s, " user virtual address size dma dir\n"); + seq_puts(s, "----------------------------------------------------------\n"); + } + seq_printf(s, + " 0x%-14llx %-10u %-30s\n", + userptr->addr, userptr->size, dma_dir[userptr->dir]); + } + + spin_unlock(&dev_entry->userptr_spinlock); + + if (!first) + seq_puts(s, "\n"); + + return 0; +} + +static int vm_show(struct seq_file *s, void *data) +{ + struct hl_debugfs_entry *entry = s->private; + struct hl_dbg_device_entry *dev_entry = entry->dev_entry; + struct hl_ctx *ctx; + struct hl_vm *vm; + struct hl_vm_hash_node *hnode; + struct hl_userptr *userptr; + struct hl_vm_phys_pg_pack *phys_pg_pack = NULL; + enum vm_type_t *vm_type; + bool once = true; + int i; + + if (!dev_entry->hdev->mmu_enable) + return 0; + + spin_lock(&dev_entry->ctx_mem_hash_spinlock); + + list_for_each_entry(ctx, &dev_entry->ctx_mem_hash_list, debugfs_list) { + once = false; + seq_puts(s, "\n\n----------------------------------------------------"); + seq_puts(s, "\n----------------------------------------------------\n\n"); + seq_printf(s, "ctx asid: %u\n", ctx->asid); + + seq_puts(s, "\nmappings:\n\n"); + seq_puts(s, " virtual address size handle\n"); + seq_puts(s, "----------------------------------------------------\n"); + mutex_lock(&ctx->mem_hash_lock); + hash_for_each(ctx->mem_hash, i, hnode, node) { + vm_type = hnode->ptr; + + if (*vm_type == VM_TYPE_USERPTR) { + userptr = hnode->ptr; + seq_printf(s, + " 0x%-14llx %-10u\n", + hnode->vaddr, userptr->size); + } else { + phys_pg_pack = hnode->ptr; + seq_printf(s, + " 0x%-14llx %-10u %-4u\n", + hnode->vaddr, phys_pg_pack->total_size, + phys_pg_pack->handle); + } + } + mutex_unlock(&ctx->mem_hash_lock); + + vm = &ctx->hdev->vm; + spin_lock(&vm->idr_lock); + + if (!idr_is_empty(&vm->phys_pg_pack_handles)) + seq_puts(s, "\n\nallocations:\n"); + + idr_for_each_entry(&vm->phys_pg_pack_handles, phys_pg_pack, i) { + if (phys_pg_pack->asid != ctx->asid) + continue; + + seq_printf(s, "\nhandle: %u\n", phys_pg_pack->handle); + seq_printf(s, "page size: %u\n\n", + phys_pg_pack->page_size); + seq_puts(s, " physical address\n"); + seq_puts(s, "---------------------\n"); + for (i = 0 ; i < phys_pg_pack->npages ; i++) { + seq_printf(s, " 0x%-14llx\n", + phys_pg_pack->pages[i]); + } + } + spin_unlock(&vm->idr_lock); + + } + + spin_unlock(&dev_entry->ctx_mem_hash_spinlock); + + if (!once) + seq_puts(s, "\n"); + + return 0; +} + +/* these inline functions are copied from mmu.c */ +static inline u64 get_hop0_addr(struct hl_ctx *ctx) +{ + return ctx->hdev->asic_prop.mmu_pgt_addr + + (ctx->asid * ctx->hdev->asic_prop.mmu_hop_table_size); +} + +static inline u64 get_hop0_pte_addr(struct hl_ctx *ctx, u64 hop_addr, + u64 virt_addr) +{ + return hop_addr + ctx->hdev->asic_prop.mmu_pte_size * + ((virt_addr & HOP0_MASK) >> HOP0_SHIFT); +} + +static inline u64 get_hop1_pte_addr(struct hl_ctx *ctx, u64 hop_addr, + u64 virt_addr) +{ + return hop_addr + ctx->hdev->asic_prop.mmu_pte_size * + ((virt_addr & HOP1_MASK) >> HOP1_SHIFT); +} + +static inline u64 get_hop2_pte_addr(struct hl_ctx *ctx, u64 hop_addr, + u64 virt_addr) +{ + return hop_addr + ctx->hdev->asic_prop.mmu_pte_size * + ((virt_addr & HOP2_MASK) >> HOP2_SHIFT); +} + +static inline u64 get_hop3_pte_addr(struct hl_ctx *ctx, u64 hop_addr, + u64 virt_addr) +{ + return hop_addr + ctx->hdev->asic_prop.mmu_pte_size * + ((virt_addr & HOP3_MASK) >> HOP3_SHIFT); +} + +static inline u64 get_hop4_pte_addr(struct hl_ctx *ctx, u64 hop_addr, + u64 virt_addr) +{ + return hop_addr + ctx->hdev->asic_prop.mmu_pte_size * + ((virt_addr & HOP4_MASK) >> HOP4_SHIFT); +} + +static inline u64 get_next_hop_addr(u64 curr_pte) +{ + if (curr_pte & PAGE_PRESENT_MASK) + return curr_pte & PHYS_ADDR_MASK; + else + return ULLONG_MAX; +} + +static int mmu_show(struct seq_file *s, void *data) +{ + struct hl_debugfs_entry *entry = s->private; + struct hl_dbg_device_entry *dev_entry = entry->dev_entry; + struct hl_device *hdev = dev_entry->hdev; + struct hl_ctx *ctx = hdev->user_ctx; + + u64 hop0_addr = 0, hop0_pte_addr = 0, hop0_pte = 0, + hop1_addr = 0, hop1_pte_addr = 0, hop1_pte = 0, + hop2_addr = 0, hop2_pte_addr = 0, hop2_pte = 0, + hop3_addr = 0, hop3_pte_addr = 0, hop3_pte = 0, + hop4_addr = 0, hop4_pte_addr = 0, hop4_pte = 0, + virt_addr = dev_entry->mmu_addr; + + if (!hdev->mmu_enable) + return 0; + + if (!ctx) { + dev_err(hdev->dev, "no ctx available\n"); + return 0; + } + + mutex_lock(&ctx->mmu_lock); + + /* the following lookup is copied from unmap() in mmu.c */ + + hop0_addr = get_hop0_addr(ctx); + hop0_pte_addr = get_hop0_pte_addr(ctx, hop0_addr, virt_addr); + hop0_pte = hdev->asic_funcs->read_pte(hdev, hop0_pte_addr); + hop1_addr = get_next_hop_addr(hop0_pte); + + if (hop1_addr == ULLONG_MAX) + goto not_mapped; + + hop1_pte_addr = get_hop1_pte_addr(ctx, hop1_addr, virt_addr); + hop1_pte = hdev->asic_funcs->read_pte(hdev, hop1_pte_addr); + hop2_addr = get_next_hop_addr(hop1_pte); + + if (hop2_addr == ULLONG_MAX) + goto not_mapped; + + hop2_pte_addr = get_hop2_pte_addr(ctx, hop2_addr, virt_addr); + hop2_pte = hdev->asic_funcs->read_pte(hdev, hop2_pte_addr); + hop3_addr = get_next_hop_addr(hop2_pte); + + if (hop3_addr == ULLONG_MAX) + goto not_mapped; + + hop3_pte_addr = get_hop3_pte_addr(ctx, hop3_addr, virt_addr); + hop3_pte = hdev->asic_funcs->read_pte(hdev, hop3_pte_addr); + + if (!(hop3_pte & LAST_MASK)) { + hop4_addr = get_next_hop_addr(hop3_pte); + + if (hop4_addr == ULLONG_MAX) + goto not_mapped; + + hop4_pte_addr = get_hop4_pte_addr(ctx, hop4_addr, virt_addr); + hop4_pte = hdev->asic_funcs->read_pte(hdev, hop4_pte_addr); + if (!(hop4_pte & PAGE_PRESENT_MASK)) + goto not_mapped; + } else { + if (!(hop3_pte & PAGE_PRESENT_MASK)) + goto not_mapped; + } + + seq_printf(s, "asid: %u, virt_addr: 0x%llx\n", + dev_entry->mmu_asid, dev_entry->mmu_addr); + + seq_printf(s, "hop0_addr: 0x%llx\n", hop0_addr); + seq_printf(s, "hop0_pte_addr: 0x%llx\n", hop0_pte_addr); + seq_printf(s, "hop0_pte: 0x%llx\n", hop0_pte); + + seq_printf(s, "hop1_addr: 0x%llx\n", hop1_addr); + seq_printf(s, "hop1_pte_addr: 0x%llx\n", hop1_pte_addr); + seq_printf(s, "hop1_pte: 0x%llx\n", hop1_pte); + + seq_printf(s, "hop2_addr: 0x%llx\n", hop2_addr); + seq_printf(s, "hop2_pte_addr: 0x%llx\n", hop2_pte_addr); + seq_printf(s, "hop2_pte: 0x%llx\n", hop2_pte); + + seq_printf(s, "hop3_addr: 0x%llx\n", hop3_addr); + seq_printf(s, "hop3_pte_addr: 0x%llx\n", hop3_pte_addr); + seq_printf(s, "hop3_pte: 0x%llx\n", hop3_pte); + + if (!(hop3_pte & LAST_MASK)) { + seq_printf(s, "hop4_addr: 0x%llx\n", hop4_addr); + seq_printf(s, "hop4_pte_addr: 0x%llx\n", hop4_pte_addr); + seq_printf(s, "hop4_pte: 0x%llx\n", hop4_pte); + } + + goto out; + +not_mapped: + dev_err(hdev->dev, "virt addr 0x%llx is not mapped to phys addr\n", + virt_addr); +out: + mutex_unlock(&ctx->mmu_lock); + + return 0; +} + +static ssize_t mmu_write(struct file *file, const char __user *buf, + size_t count, loff_t *f_pos) +{ + struct seq_file *s = file->private_data; + struct hl_debugfs_entry *entry = s->private; + struct hl_dbg_device_entry *dev_entry = entry->dev_entry; + struct hl_device *hdev = dev_entry->hdev; + char kbuf[MMU_KBUF_SIZE], asid_kbuf[MMU_ASID_BUF_SIZE], + addr_kbuf[MMU_ADDR_BUF_SIZE]; + char *c; + ssize_t rc; + + if (!hdev->mmu_enable) + return count; + + memset(kbuf, 0, sizeof(kbuf)); + memset(asid_kbuf, 0, sizeof(asid_kbuf)); + memset(addr_kbuf, 0, sizeof(addr_kbuf)); + + if (copy_from_user(kbuf, buf, count)) + goto err; + + kbuf[MMU_KBUF_SIZE - 1] = 0; + + c = strchr(kbuf, ' '); + if (!c) + goto err; + + memcpy(asid_kbuf, kbuf, c - kbuf); + + rc = kstrtouint(asid_kbuf, 10, &dev_entry->mmu_asid); + if (rc) + goto err; + + c = strstr(kbuf, " 0x"); + if (!c) + goto err; + + c += 3; + memcpy(addr_kbuf, c, (kbuf + count) - c); + + rc = kstrtoull(addr_kbuf, 16, &dev_entry->mmu_addr); + if (rc) + goto err; + + return count; + +err: + dev_err(hdev->dev, "usage: echo <asid> <0xaddr> > mmu\n"); + + return -EINVAL; +} + +static ssize_t hl_data_read32(struct file *f, char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + char tmp_buf[32]; + u32 val; + ssize_t rc; + + if (*ppos) + return 0; + + rc = hdev->asic_funcs->debugfs_read32(hdev, entry->addr, &val); + if (rc) { + dev_err(hdev->dev, "Failed to read from 0x%010llx\n", + entry->addr); + return rc; + } + + sprintf(tmp_buf, "0x%08x\n", val); + rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf, + strlen(tmp_buf) + 1); + + return rc; +} + +static ssize_t hl_data_write32(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + u32 value; + ssize_t rc; + + rc = kstrtouint_from_user(buf, count, 16, &value); + if (rc) + return rc; + + rc = hdev->asic_funcs->debugfs_write32(hdev, entry->addr, value); + if (rc) { + dev_err(hdev->dev, "Failed to write 0x%08x to 0x%010llx\n", + value, entry->addr); + return rc; + } + + return count; +} + +static ssize_t hl_get_power_state(struct file *f, char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + char tmp_buf[200]; + ssize_t rc; + int i; + + if (*ppos) + return 0; + + if (hdev->pdev->current_state == PCI_D0) + i = 1; + else if (hdev->pdev->current_state == PCI_D3hot) + i = 2; + else + i = 3; + + sprintf(tmp_buf, + "current power state: %d\n1 - D0\n2 - D3hot\n3 - Unknown\n", i); + rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf, + strlen(tmp_buf) + 1); + + return rc; +} + +static ssize_t hl_set_power_state(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + u32 value; + ssize_t rc; + + rc = kstrtouint_from_user(buf, count, 10, &value); + if (rc) + return rc; + + if (value == 1) { + pci_set_power_state(hdev->pdev, PCI_D0); + pci_restore_state(hdev->pdev); + rc = pci_enable_device(hdev->pdev); + } else if (value == 2) { + pci_save_state(hdev->pdev); + pci_disable_device(hdev->pdev); + pci_set_power_state(hdev->pdev, PCI_D3hot); + } else { + dev_dbg(hdev->dev, "invalid power state value %u\n", value); + return -EINVAL; + } + + return count; +} + +static ssize_t hl_i2c_data_read(struct file *f, char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + char tmp_buf[32]; + u32 val; + ssize_t rc; + + if (*ppos) + return 0; + + rc = hl_debugfs_i2c_read(hdev, entry->i2c_bus, entry->i2c_addr, + entry->i2c_reg, &val); + if (rc) { + dev_err(hdev->dev, + "Failed to read from I2C bus %d, addr %d, reg %d\n", + entry->i2c_bus, entry->i2c_addr, entry->i2c_reg); + return rc; + } + + sprintf(tmp_buf, "0x%02x\n", val); + rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf, + strlen(tmp_buf) + 1); + + return rc; +} + +static ssize_t hl_i2c_data_write(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + u32 value; + ssize_t rc; + + rc = kstrtouint_from_user(buf, count, 16, &value); + if (rc) + return rc; + + rc = hl_debugfs_i2c_write(hdev, entry->i2c_bus, entry->i2c_addr, + entry->i2c_reg, value); + if (rc) { + dev_err(hdev->dev, + "Failed to write 0x%02x to I2C bus %d, addr %d, reg %d\n", + value, entry->i2c_bus, entry->i2c_addr, entry->i2c_reg); + return rc; + } + + return count; +} + +static ssize_t hl_led0_write(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + u32 value; + ssize_t rc; + + rc = kstrtouint_from_user(buf, count, 10, &value); + if (rc) + return rc; + + value = value ? 1 : 0; + + hl_debugfs_led_set(hdev, 0, value); + + return count; +} + +static ssize_t hl_led1_write(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + u32 value; + ssize_t rc; + + rc = kstrtouint_from_user(buf, count, 10, &value); + if (rc) + return rc; + + value = value ? 1 : 0; + + hl_debugfs_led_set(hdev, 1, value); + + return count; +} + +static ssize_t hl_led2_write(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + u32 value; + ssize_t rc; + + rc = kstrtouint_from_user(buf, count, 10, &value); + if (rc) + return rc; + + value = value ? 1 : 0; + + hl_debugfs_led_set(hdev, 2, value); + + return count; +} + +static ssize_t hl_device_read(struct file *f, char __user *buf, + size_t count, loff_t *ppos) +{ + char tmp_buf[200]; + ssize_t rc; + + if (*ppos) + return 0; + + sprintf(tmp_buf, + "Valid values are: disable, enable, suspend, resume\n"); + rc = simple_read_from_buffer(buf, strlen(tmp_buf) + 1, ppos, tmp_buf, + strlen(tmp_buf) + 1); + + return rc; +} + +static ssize_t hl_device_write(struct file *f, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct hl_dbg_device_entry *entry = file_inode(f)->i_private; + struct hl_device *hdev = entry->hdev; + char data[30]; + + /* don't allow partial writes */ + if (*ppos != 0) + return 0; + + simple_write_to_buffer(data, 29, ppos, buf, count); + + if (strncmp("disable", data, strlen("disable")) == 0) { + hdev->disabled = true; + } else if (strncmp("enable", data, strlen("enable")) == 0) { + hdev->disabled = false; + } else if (strncmp("suspend", data, strlen("suspend")) == 0) { + hdev->asic_funcs->suspend(hdev); + } else if (strncmp("resume", data, strlen("resume")) == 0) { + hdev->asic_funcs->resume(hdev); + } else { + dev_err(hdev->dev, + "Valid values are: disable, enable, suspend, resume\n"); + count = -EINVAL; + } + + return count; +} + +static const struct file_operations hl_data32b_fops = { + .owner = THIS_MODULE, + .read = hl_data_read32, + .write = hl_data_write32 +}; + +static const struct file_operations hl_i2c_data_fops = { + .owner = THIS_MODULE, + .read = hl_i2c_data_read, + .write = hl_i2c_data_write +}; + +static const struct file_operations hl_power_fops = { + .owner = THIS_MODULE, + .read = hl_get_power_state, + .write = hl_set_power_state +}; + +static const struct file_operations hl_led0_fops = { + .owner = THIS_MODULE, + .write = hl_led0_write +}; + +static const struct file_operations hl_led1_fops = { + .owner = THIS_MODULE, + .write = hl_led1_write +}; + +static const struct file_operations hl_led2_fops = { + .owner = THIS_MODULE, + .write = hl_led2_write +}; + +static const struct file_operations hl_device_fops = { + .owner = THIS_MODULE, + .read = hl_device_read, + .write = hl_device_write +}; + +static const struct hl_info_list hl_debugfs_list[] = { + {"command_buffers", command_buffers_show, NULL}, + {"command_submission", command_submission_show, NULL}, + {"command_submission_jobs", command_submission_jobs_show, NULL}, + {"userptr", userptr_show, NULL}, + {"vm", vm_show, NULL}, + {"mmu", mmu_show, mmu_write}, +}; + +static int hl_debugfs_open(struct inode *inode, struct file *file) +{ + struct hl_debugfs_entry *node = inode->i_private; + + return single_open(file, node->info_ent->show, node); +} + +static ssize_t hl_debugfs_write(struct file *file, const char __user *buf, + size_t count, loff_t *f_pos) +{ + struct hl_debugfs_entry *node = file->f_inode->i_private; + + if (node->info_ent->write) + return node->info_ent->write(file, buf, count, f_pos); + else + return -EINVAL; + +} + +static const struct file_operations hl_debugfs_fops = { + .owner = THIS_MODULE, + .open = hl_debugfs_open, + .read = seq_read, + .write = hl_debugfs_write, + .llseek = seq_lseek, + .release = single_release, +}; + +void hl_debugfs_add_device(struct hl_device *hdev) +{ + struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs; + int count = ARRAY_SIZE(hl_debugfs_list); + struct hl_debugfs_entry *entry; + struct dentry *ent; + int i; + + dev_entry->hdev = hdev; + dev_entry->entry_arr = kmalloc_array(count, + sizeof(struct hl_debugfs_entry), + GFP_KERNEL); + if (!dev_entry->entry_arr) + return; + + INIT_LIST_HEAD(&dev_entry->file_list); + INIT_LIST_HEAD(&dev_entry->cb_list); + INIT_LIST_HEAD(&dev_entry->cs_list); + INIT_LIST_HEAD(&dev_entry->cs_job_list); + INIT_LIST_HEAD(&dev_entry->userptr_list); + INIT_LIST_HEAD(&dev_entry->ctx_mem_hash_list); + mutex_init(&dev_entry->file_mutex); + spin_lock_init(&dev_entry->cb_spinlock); + spin_lock_init(&dev_entry->cs_spinlock); + spin_lock_init(&dev_entry->cs_job_spinlock); + spin_lock_init(&dev_entry->userptr_spinlock); + spin_lock_init(&dev_entry->ctx_mem_hash_spinlock); + + dev_entry->root = debugfs_create_dir(dev_name(hdev->dev), + hl_debug_root); + + debugfs_create_x64("addr", + 0644, + dev_entry->root, + &dev_entry->addr); + + debugfs_create_file("data32", + 0644, + dev_entry->root, + dev_entry, + &hl_data32b_fops); + + debugfs_create_file("set_power_state", + 0200, + dev_entry->root, + dev_entry, + &hl_power_fops); + + debugfs_create_u8("i2c_bus", + 0644, + dev_entry->root, + &dev_entry->i2c_bus); + + debugfs_create_u8("i2c_addr", + 0644, + dev_entry->root, + &dev_entry->i2c_addr); + + debugfs_create_u8("i2c_reg", + 0644, + dev_entry->root, + &dev_entry->i2c_reg); + + debugfs_create_file("i2c_data", + 0644, + dev_entry->root, + dev_entry, + &hl_i2c_data_fops); + + debugfs_create_file("led0", + 0200, + dev_entry->root, + dev_entry, + &hl_led0_fops); + + debugfs_create_file("led1", + 0200, + dev_entry->root, + dev_entry, + &hl_led1_fops); + + debugfs_create_file("led2", + 0200, + dev_entry->root, + dev_entry, + &hl_led2_fops); + + debugfs_create_file("device", + 0200, + dev_entry->root, + dev_entry, + &hl_device_fops); + + for (i = 0, entry = dev_entry->entry_arr ; i < count ; i++, entry++) { + + ent = debugfs_create_file(hl_debugfs_list[i].name, + 0444, + dev_entry->root, + entry, + &hl_debugfs_fops); + entry->dent = ent; + entry->info_ent = &hl_debugfs_list[i]; + entry->dev_entry = dev_entry; + } +} + +void hl_debugfs_remove_device(struct hl_device *hdev) +{ + struct hl_dbg_device_entry *entry = &hdev->hl_debugfs; + + debugfs_remove_recursive(entry->root); + + mutex_destroy(&entry->file_mutex); + kfree(entry->entry_arr); +} + +void hl_debugfs_add_file(struct hl_fpriv *hpriv) +{ + struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs; + + mutex_lock(&dev_entry->file_mutex); + list_add(&hpriv->debugfs_list, &dev_entry->file_list); + mutex_unlock(&dev_entry->file_mutex); +} + +void hl_debugfs_remove_file(struct hl_fpriv *hpriv) +{ + struct hl_dbg_device_entry *dev_entry = &hpriv->hdev->hl_debugfs; + + mutex_lock(&dev_entry->file_mutex); + list_del(&hpriv->debugfs_list); + mutex_unlock(&dev_entry->file_mutex); +} + +void hl_debugfs_add_cb(struct hl_cb *cb) +{ + struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs; + + spin_lock(&dev_entry->cb_spinlock); + list_add(&cb->debugfs_list, &dev_entry->cb_list); + spin_unlock(&dev_entry->cb_spinlock); +} + +void hl_debugfs_remove_cb(struct hl_cb *cb) +{ + struct hl_dbg_device_entry *dev_entry = &cb->hdev->hl_debugfs; + + spin_lock(&dev_entry->cb_spinlock); + list_del(&cb->debugfs_list); + spin_unlock(&dev_entry->cb_spinlock); +} + +void hl_debugfs_add_cs(struct hl_cs *cs) +{ + struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs; + + spin_lock(&dev_entry->cs_spinlock); + list_add(&cs->debugfs_list, &dev_entry->cs_list); + spin_unlock(&dev_entry->cs_spinlock); +} + +void hl_debugfs_remove_cs(struct hl_cs *cs) +{ + struct hl_dbg_device_entry *dev_entry = &cs->ctx->hdev->hl_debugfs; + + spin_lock(&dev_entry->cs_spinlock); + list_del(&cs->debugfs_list); + spin_unlock(&dev_entry->cs_spinlock); +} + +void hl_debugfs_add_job(struct hl_device *hdev, struct hl_cs_job *job) +{ + struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs; + + spin_lock(&dev_entry->cs_job_spinlock); + list_add(&job->debugfs_list, &dev_entry->cs_job_list); + spin_unlock(&dev_entry->cs_job_spinlock); +} + +void hl_debugfs_remove_job(struct hl_device *hdev, struct hl_cs_job *job) +{ + struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs; + + spin_lock(&dev_entry->cs_job_spinlock); + list_del(&job->debugfs_list); + spin_unlock(&dev_entry->cs_job_spinlock); +} + +void hl_debugfs_add_userptr(struct hl_device *hdev, struct hl_userptr *userptr) +{ + struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs; + + spin_lock(&dev_entry->userptr_spinlock); + list_add(&userptr->debugfs_list, &dev_entry->userptr_list); + spin_unlock(&dev_entry->userptr_spinlock); +} + +void hl_debugfs_remove_userptr(struct hl_device *hdev, + struct hl_userptr *userptr) +{ + struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs; + + spin_lock(&dev_entry->userptr_spinlock); + list_del(&userptr->debugfs_list); + spin_unlock(&dev_entry->userptr_spinlock); +} + +void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx) +{ + struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs; + + spin_lock(&dev_entry->ctx_mem_hash_spinlock); + list_add(&ctx->debugfs_list, &dev_entry->ctx_mem_hash_list); + spin_unlock(&dev_entry->ctx_mem_hash_spinlock); +} + +void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx) +{ + struct hl_dbg_device_entry *dev_entry = &hdev->hl_debugfs; + + spin_lock(&dev_entry->ctx_mem_hash_spinlock); + list_del(&ctx->debugfs_list); + spin_unlock(&dev_entry->ctx_mem_hash_spinlock); +} + +void __init hl_debugfs_init(void) +{ + hl_debug_root = debugfs_create_dir("habanalabs", NULL); +} + +void hl_debugfs_fini(void) +{ + debugfs_remove_recursive(hl_debug_root); +} diff --git a/drivers/misc/habanalabs/device.c b/drivers/misc/habanalabs/device.c index d0929022655b..a6fd3d90e9d1 100644 --- a/drivers/misc/habanalabs/device.c +++ b/drivers/misc/habanalabs/device.c @@ -30,6 +30,8 @@ static void hpriv_release(struct kref *ref) put_pid(hpriv->taskpid); + hl_debugfs_remove_file(hpriv); + mutex_destroy(&hpriv->restore_phase_mutex); kfree(hpriv); @@ -834,6 +836,8 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass) goto free_cb_pool; } + hl_debugfs_add_device(hdev); + if (hdev->asic_funcs->get_hw_state(hdev) == HL_DEVICE_HW_STATE_DIRTY) { dev_info(hdev->dev, "H/W state is dirty, must reset before initializing\n"); @@ -972,6 +976,8 @@ void hl_device_fini(struct hl_device *hdev) device_late_fini(hdev); + hl_debugfs_remove_device(hdev); + hl_sysfs_fini(hdev); /* diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c index bf3f76f1aeae..c43bd37fe693 100644 --- a/drivers/misc/habanalabs/goya/goya.c +++ b/drivers/misc/habanalabs/goya/goya.c @@ -4370,6 +4370,8 @@ int goya_context_switch(struct hl_device *hdev, u32 asid) job->user_cb_size = cb_size; job->hw_queue_id = GOYA_QUEUE_ID_DMA_0; + hl_debugfs_add_job(hdev, job); + parser.ctx_id = HL_KERNEL_ASID_ID; parser.cs_sequence = 0; parser.job_id = job->id; @@ -4402,6 +4404,7 @@ int goya_context_switch(struct hl_device *hdev, u32 asid) free_job: hl_userptr_delete_list(hdev, &job->userptr_list); + hl_debugfs_remove_job(hdev, job); kfree(job); cb->cs_cnt--; @@ -4432,6 +4435,106 @@ void goya_restore_phase_topology(struct hl_device *hdev) i = RREG32(mmSYNC_MNGR_SOB_OBJ_0); } +/* + * goya_debugfs_read32 - read a 32bit value from a given device address + * + * @hdev: pointer to hl_device structure + * @addr: address in device + * @val: returned value + * + * In case of DDR address that is not mapped into the default aperture that + * the DDR bar exposes, the function will configure the iATU so that the DDR + * bar will be positioned at a base address that allows reading from the + * required address. Configuring the iATU during normal operation can + * lead to undefined behavior and therefore, should be done with extreme care + * + */ +int goya_debugfs_read32(struct hl_device *hdev, u64 addr, u32 *val) +{ + struct asic_fixed_properties *prop = &hdev->asic_prop; + int rc = 0; + + if ((addr >= CFG_BASE) && (addr < CFG_BASE + CFG_SIZE)) { + *val = RREG32(addr - CFG_BASE); + + } else if ((addr >= SRAM_BASE_ADDR) && + (addr < SRAM_BASE_ADDR + SRAM_SIZE)) { + + *val = readl(hdev->pcie_bar[SRAM_CFG_BAR_ID] + + (addr - SRAM_BASE_ADDR)); + + } else if ((addr >= DRAM_PHYS_BASE) && + (addr < DRAM_PHYS_BASE + hdev->asic_prop.dram_size)) { + + u64 bar_base_addr = DRAM_PHYS_BASE + + (addr & ~(prop->dram_pci_bar_size - 0x1ull)); + + rc = goya_set_ddr_bar_base(hdev, bar_base_addr); + if (!rc) { + *val = readl(hdev->pcie_bar[DDR_BAR_ID] + + (addr - bar_base_addr)); + + rc = goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE + + (MMU_PAGE_TABLES_ADDR & + ~(prop->dram_pci_bar_size - 0x1ull))); + } + } else { + rc = -EFAULT; + } + + return rc; +} + +/* + * goya_debugfs_write32 - write a 32bit value to a given device address + * + * @hdev: pointer to hl_device structure + * @addr: address in device + * @val: returned value + * + * In case of DDR address that is not mapped into the default aperture that + * the DDR bar exposes, the function will configure the iATU so that the DDR + * bar will be positioned at a base address that allows writing to the + * required address. Configuring the iATU during normal operation can + * lead to undefined behavior and therefore, should be done with extreme care + * + */ +int goya_debugfs_write32(struct hl_device *hdev, u64 addr, u32 val) +{ + struct asic_fixed_properties *prop = &hdev->asic_prop; + int rc = 0; + + if ((addr >= CFG_BASE) && (addr < CFG_BASE + CFG_SIZE)) { + WREG32(addr - CFG_BASE, val); + + } else if ((addr >= SRAM_BASE_ADDR) && + (addr < SRAM_BASE_ADDR + SRAM_SIZE)) { + + writel(val, hdev->pcie_bar[SRAM_CFG_BAR_ID] + + (addr - SRAM_BASE_ADDR)); + + } else if ((addr >= DRAM_PHYS_BASE) && + (addr < DRAM_PHYS_BASE + hdev->asic_prop.dram_size)) { + + u64 bar_base_addr = DRAM_PHYS_BASE + + (addr & ~(prop->dram_pci_bar_size - 0x1ull)); + + rc = goya_set_ddr_bar_base(hdev, bar_base_addr); + if (!rc) { + writel(val, hdev->pcie_bar[DDR_BAR_ID] + + (addr - bar_base_addr)); + + rc = goya_set_ddr_bar_base(hdev, DRAM_PHYS_BASE + + (MMU_PAGE_TABLES_ADDR & + ~(prop->dram_pci_bar_size - 0x1ull))); + } + } else { + rc = -EFAULT; + } + + return rc; +} + static u64 goya_read_pte(struct hl_device *hdev, u64 addr) { struct goya_device *goya = hdev->asic_specific; @@ -4780,6 +4883,8 @@ static int goya_mmu_clear_pgt_range(struct hl_device *hdev) job->user_cb_size = cb_size; job->hw_queue_id = GOYA_QUEUE_ID_DMA_0; + hl_debugfs_add_job(hdev, job); + parser.ctx_id = HL_KERNEL_ASID_ID; parser.cs_sequence = 0; parser.job_id = job->id; @@ -4808,6 +4913,7 @@ static int goya_mmu_clear_pgt_range(struct hl_device *hdev) free_job: hl_userptr_delete_list(hdev, &job->userptr_list); + hl_debugfs_remove_job(hdev, job); kfree(job); cb->cs_cnt--; @@ -5222,6 +5328,8 @@ static const struct hl_asic_funcs goya_funcs = { .update_eq_ci = goya_update_eq_ci, .context_switch = goya_context_switch, .restore_phase_topology = goya_restore_phase_topology, + .debugfs_read32 = goya_debugfs_read32, + .debugfs_write32 = goya_debugfs_write32, .add_device_attr = goya_add_device_attr, .handle_eqe = goya_handle_eqe, .set_pll_profile = goya_set_pll_profile, diff --git a/drivers/misc/habanalabs/goya/goyaP.h b/drivers/misc/habanalabs/goya/goyaP.h index fa6ef506a638..7dc324e4e268 100644 --- a/drivers/misc/habanalabs/goya/goyaP.h +++ b/drivers/misc/habanalabs/goya/goyaP.h @@ -165,6 +165,10 @@ struct goya_device { u32 hw_cap_initialized; }; +int goya_debugfs_i2c_read(struct hl_device *hdev, u8 i2c_bus, + u8 i2c_addr, u8 i2c_reg, u32 *val); +int goya_debugfs_i2c_write(struct hl_device *hdev, u8 i2c_bus, + u8 i2c_addr, u8 i2c_reg, u32 val); int goya_test_cpu_queue(struct hl_device *hdev); int goya_send_cpu_message(struct hl_device *hdev, u32 *msg, u16 len, u32 timeout, long *result); @@ -175,6 +179,7 @@ long goya_get_fan_speed(struct hl_device *hdev, int sensor_index, u32 attr); long goya_get_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr); void goya_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr, long value); +void goya_debugfs_led_set(struct hl_device *hdev, u8 led, u8 state); void goya_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq); void goya_add_device_attr(struct hl_device *hdev, struct attribute_group *dev_attr_grp); diff --git a/drivers/misc/habanalabs/habanalabs.h b/drivers/misc/habanalabs/habanalabs.h index 02de4a2cab27..901542d685e8 100644 --- a/drivers/misc/habanalabs/habanalabs.h +++ b/drivers/misc/habanalabs/habanalabs.h @@ -238,6 +238,7 @@ struct hl_cb_mgr { * @refcount: reference counter for usage of the CB. * @hdev: pointer to device this CB belongs to. * @lock: spinlock to protect mmap/cs flows. + * @debugfs_list: node in debugfs list of command buffers. * @pool_list: node in pool list of command buffers. * @kernel_address: Holds the CB's kernel virtual address. * @bus_address: Holds the CB's DMA address. @@ -253,6 +254,7 @@ struct hl_cb { struct kref refcount; struct hl_device *hdev; spinlock_t lock; + struct list_head debugfs_list; struct list_head pool_list; u64 kernel_address; dma_addr_t bus_address; @@ -453,6 +455,8 @@ enum hl_pll_frequency { * @update_eq_ci: update event queue CI. * @context_switch: called upon ASID context switch. * @restore_phase_topology: clear all SOBs amd MONs. + * @debugfs_read32: debug interface for reading u32 from DRAM/SRAM. + * @debugfs_write32: debug interface for writing u32 to DRAM/SRAM. * @add_device_attr: add ASIC specific device attributes. * @handle_eqe: handle event queue entry (IRQ) from ArmCP. * @set_pll_profile: change PLL profile (manual/automatic). @@ -521,6 +525,8 @@ struct hl_asic_funcs { void (*update_eq_ci)(struct hl_device *hdev, u32 val); int (*context_switch)(struct hl_device *hdev, u32 asid); void (*restore_phase_topology)(struct hl_device *hdev); + int (*debugfs_read32)(struct hl_device *hdev, u64 addr, u32 *val); + int (*debugfs_write32)(struct hl_device *hdev, u64 addr, u32 val); void (*add_device_attr)(struct hl_device *hdev, struct attribute_group *dev_attr_grp); void (*handle_eqe)(struct hl_device *hdev, @@ -584,6 +590,7 @@ struct hl_va_range { * @mem_hash_lock: protects the mem_hash. * @mmu_lock: protects the MMU page tables. Any change to the PGT, modifing the * MMU hash or walking the PGT requires talking this lock + * @debugfs_list: node in debugfs list of contexts. * @cs_sequence: sequence number for CS. Value is assigned to a CS and passed * to user so user could inquire about CS. It is used as * index to cs_pending array. @@ -608,6 +615,7 @@ struct hl_ctx { struct hl_va_range dram_va_range; struct mutex mem_hash_lock; struct mutex mmu_lock; + struct list_head debugfs_list; u64 cs_sequence; spinlock_t cs_lock; atomic64_t dram_phys_mem; @@ -666,6 +674,7 @@ struct hl_userptr { * @fence: pointer to the fence object of this CS. * @work_tdr: delayed work node for TDR. * @mirror_node : node in device mirror list of command submissions. + * @debugfs_list: node in debugfs list of command submissions. * @sequence: the sequence number of this CS. * @submitted: true if CS was submitted to H/W. * @completed: true if CS was completed by device. @@ -683,6 +692,7 @@ struct hl_cs { struct dma_fence *fence; struct delayed_work work_tdr; struct list_head mirror_node; + struct list_head debugfs_list; u64 sequence; u8 submitted; u8 completed; @@ -701,6 +711,7 @@ struct hl_cs { * @finish_work: workqueue object to run when job is completed. * @userptr_list: linked-list of userptr mappings that belong to this job and * wait for completion. + * @debugfs_list: node in debugfs list of command submission jobs. * @id: the id of this job inside a CS. * @hw_queue_id: the id of the H/W queue this job is submitted to. * @user_cb_size: the actual size of the CB we got from the user. @@ -714,6 +725,7 @@ struct hl_cs_job { struct hl_cb *patched_cb; struct work_struct finish_work; struct list_head userptr_list; + struct list_head debugfs_list; u32 id; u32 hw_queue_id; u32 user_cb_size; @@ -844,6 +856,7 @@ struct hl_vm { * @ctx: current executing context. * @ctx_mgr: context manager to handle multiple context for this FD. * @cb_mgr: command buffer manager to handle multiple buffers for this FD. + * @debugfs_list: list of relevant ASIC debugfs. * @refcount: number of related contexts. * @restore_phase_mutex: lock for context switch and restore phase. */ @@ -854,12 +867,91 @@ struct hl_fpriv { struct hl_ctx *ctx; /* TODO: remove for multiple ctx */ struct hl_ctx_mgr ctx_mgr; struct hl_cb_mgr cb_mgr; + struct list_head debugfs_list; struct kref refcount; struct mutex restore_phase_mutex; }; /* + * DebugFS + */ + +/** + * struct hl_info_list - debugfs file ops. + * @name: file name. + * @show: function to output information. + * @write: function to write to the file. + */ +struct hl_info_list { + const char *name; + int (*show)(struct seq_file *s, void *data); + ssize_t (*write)(struct file *file, const char __user *buf, + size_t count, loff_t *f_pos); +}; + +/** + * struct hl_debugfs_entry - debugfs dentry wrapper. + * @dent: base debugfs entry structure. + * @info_ent: dentry realted ops. + * @dev_entry: ASIC specific debugfs manager. + */ +struct hl_debugfs_entry { + struct dentry *dent; + const struct hl_info_list *info_ent; + struct hl_dbg_device_entry *dev_entry; +}; + +/** + * struct hl_dbg_device_entry - ASIC specific debugfs manager. + * @root: root dentry. + * @hdev: habanalabs device structure. + * @entry_arr: array of available hl_debugfs_entry. + * @file_list: list of available debugfs files. + * @file_mutex: protects file_list. + * @cb_list: list of available CBs. + * @cb_spinlock: protects cb_list. + * @cs_list: list of available CSs. + * @cs_spinlock: protects cs_list. + * @cs_job_list: list of available CB jobs. + * @cs_job_spinlock: protects cs_job_list. + * @userptr_list: list of available userptrs (virtual memory chunk descriptor). + * @userptr_spinlock: protects userptr_list. + * @ctx_mem_hash_list: list of available contexts with MMU mappings. + * @ctx_mem_hash_spinlock: protects cb_list. + * @addr: next address to read/write from/to in read/write32. + * @mmu_addr: next virtual address to translate to physical address in mmu_show. + * @mmu_asid: ASID to use while translating in mmu_show. + * @i2c_bus: generic u8 debugfs file for bus value to use in i2c_data_read. + * @i2c_bus: generic u8 debugfs file for address value to use in i2c_data_read. + * @i2c_bus: generic u8 debugfs file for register value to use in i2c_data_read. + */ +struct hl_dbg_device_entry { + struct dentry *root; + struct hl_device *hdev; + struct hl_debugfs_entry *entry_arr; + struct list_head file_list; + struct mutex file_mutex; + struct list_head cb_list; + spinlock_t cb_spinlock; + struct list_head cs_list; + spinlock_t cs_spinlock; + struct list_head cs_job_list; + spinlock_t cs_job_spinlock; + struct list_head userptr_list; + spinlock_t userptr_spinlock; + struct list_head ctx_mem_hash_list; + spinlock_t ctx_mem_hash_spinlock; + u64 addr; + u64 mmu_addr; + u32 mmu_asid; + u8 i2c_bus; + u8 i2c_addr; + u8 i2c_reg; +}; + + +/* * DEVICES */ @@ -953,6 +1045,7 @@ struct hl_device_reset_work { * @hwmon_dev: H/W monitor device. * @pm_mng_profile: current power management profile. * @hl_chip_info: ASIC's sensors information. + * @hl_debugfs: device's debugfs manager. * @cb_pool: list of preallocated CBs. * @cb_pool_lock: protects the CB pool. * @user_ctx: current user context executing. @@ -1018,6 +1111,8 @@ struct hl_device { enum hl_pm_mng_profile pm_mng_profile; struct hwmon_chip_info *hl_chip_info; + struct hl_dbg_device_entry hl_debugfs; + struct list_head cb_pool; spinlock_t cb_pool_lock; @@ -1255,6 +1350,100 @@ void hl_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr, u64 hl_get_max_power(struct hl_device *hdev); void hl_set_max_power(struct hl_device *hdev, u64 value); +#ifdef CONFIG_DEBUG_FS + +void hl_debugfs_init(void); +void hl_debugfs_fini(void); +void hl_debugfs_add_device(struct hl_device *hdev); +void hl_debugfs_remove_device(struct hl_device *hdev); +void hl_debugfs_add_file(struct hl_fpriv *hpriv); +void hl_debugfs_remove_file(struct hl_fpriv *hpriv); +void hl_debugfs_add_cb(struct hl_cb *cb); +void hl_debugfs_remove_cb(struct hl_cb *cb); +void hl_debugfs_add_cs(struct hl_cs *cs); +void hl_debugfs_remove_cs(struct hl_cs *cs); +void hl_debugfs_add_job(struct hl_device *hdev, struct hl_cs_job *job); +void hl_debugfs_remove_job(struct hl_device *hdev, struct hl_cs_job *job); +void hl_debugfs_add_userptr(struct hl_device *hdev, struct hl_userptr *userptr); +void hl_debugfs_remove_userptr(struct hl_device *hdev, + struct hl_userptr *userptr); +void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx); +void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, struct hl_ctx *ctx); + +#else + +static inline void __init hl_debugfs_init(void) +{ +} + +static inline void hl_debugfs_fini(void) +{ +} + +static inline void hl_debugfs_add_device(struct hl_device *hdev) +{ +} + +static inline void hl_debugfs_remove_device(struct hl_device *hdev) +{ +} + +static inline void hl_debugfs_add_file(struct hl_fpriv *hpriv) +{ +} + +static inline void hl_debugfs_remove_file(struct hl_fpriv *hpriv) +{ +} + +static inline void hl_debugfs_add_cb(struct hl_cb *cb) +{ +} + +static inline void hl_debugfs_remove_cb(struct hl_cb *cb) +{ +} + +static inline void hl_debugfs_add_cs(struct hl_cs *cs) +{ +} + +static inline void hl_debugfs_remove_cs(struct hl_cs *cs) +{ +} + +static inline void hl_debugfs_add_job(struct hl_device *hdev, + struct hl_cs_job *job) +{ +} + +static inline void hl_debugfs_remove_job(struct hl_device *hdev, + struct hl_cs_job *job) +{ +} + +static inline void hl_debugfs_add_userptr(struct hl_device *hdev, + struct hl_userptr *userptr) +{ +} + +static inline void hl_debugfs_remove_userptr(struct hl_device *hdev, + struct hl_userptr *userptr) +{ +} + +static inline void hl_debugfs_add_ctx_mem_hash(struct hl_device *hdev, + struct hl_ctx *ctx) +{ +} + +static inline void hl_debugfs_remove_ctx_mem_hash(struct hl_device *hdev, + struct hl_ctx *ctx) +{ +} + +#endif + /* IOCTLs */ long hl_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); int hl_cb_ioctl(struct hl_fpriv *hpriv, void *data); diff --git a/drivers/misc/habanalabs/habanalabs_drv.c b/drivers/misc/habanalabs/habanalabs_drv.c index 436ccae0989d..bd8994621e37 100644 --- a/drivers/misc/habanalabs/habanalabs_drv.c +++ b/drivers/misc/habanalabs/habanalabs_drv.c @@ -146,6 +146,8 @@ int hl_device_open(struct inode *inode, struct file *filp) */ hl_device_set_frequency(hdev, PLL_HIGH); + hl_debugfs_add_file(hpriv); + return 0; out_err: @@ -413,17 +415,20 @@ static int __init hl_init(void) goto remove_major; } + hl_debugfs_init(); + rc = pci_register_driver(&hl_pci_driver); if (rc) { pr_err("failed to register pci device\n"); - goto remove_class; + goto remove_debugfs; } pr_debug("driver loaded\n"); return 0; -remove_class: +remove_debugfs: + hl_debugfs_fini(); class_destroy(hl_class); remove_major: unregister_chrdev_region(MKDEV(hl_major, 0), HL_MAX_MINORS); @@ -437,6 +442,13 @@ static void __exit hl_exit(void) { pci_unregister_driver(&hl_pci_driver); + /* + * Removing debugfs must be after all devices or simulator devices + * have been removed because otherwise we get a bug in the + * debugfs module for referencing NULL objects + */ + hl_debugfs_fini(); + class_destroy(hl_class); unregister_chrdev_region(MKDEV(hl_major, 0), HL_MAX_MINORS); diff --git a/drivers/misc/habanalabs/memory.c b/drivers/misc/habanalabs/memory.c index 6650c8085fc6..9236e52852c6 100644 --- a/drivers/misc/habanalabs/memory.c +++ b/drivers/misc/habanalabs/memory.c @@ -1290,6 +1290,8 @@ int hl_pin_host_memory(struct hl_device *hdev, u64 addr, u32 size, goto free_sgt; } + hl_debugfs_add_userptr(hdev, userptr); + return 0; free_sgt: @@ -1315,6 +1317,8 @@ int hl_unpin_host_memory(struct hl_device *hdev, struct hl_userptr *userptr) { struct page **pages; + hl_debugfs_remove_userptr(hdev, userptr); + if (userptr->dma_mapped) hdev->asic_funcs->hl_dma_unmap_sg(hdev, userptr->sgt->sgl, @@ -1476,6 +1480,8 @@ int hl_vm_ctx_init_with_ranges(struct hl_ctx *ctx, u64 host_range_start, goto dram_vm_err; } + hl_debugfs_add_ctx_mem_hash(hdev, ctx); + return 0; dram_vm_err: @@ -1598,6 +1604,8 @@ void hl_vm_ctx_fini(struct hl_ctx *ctx) struct hlist_node *tmp_node; int i; + hl_debugfs_remove_ctx_mem_hash(hdev, ctx); + if (!hash_empty(ctx->mem_hash)) dev_notice(hdev->dev, "ctx is freed while it has va in use\n"); |