diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/habanalabs/common/debugfs.c | 72 | ||||
| -rw-r--r-- | drivers/misc/habanalabs/common/habanalabs.h | 19 | ||||
| -rw-r--r-- | drivers/misc/habanalabs/common/memory.c | 21 |
3 files changed, 93 insertions, 19 deletions
diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c index 6a7df57883d9..985f1f3dbd20 100644 --- a/drivers/misc/habanalabs/common/debugfs.c +++ b/drivers/misc/habanalabs/common/debugfs.c @@ -320,6 +320,77 @@ static int vm_show(struct seq_file *s, void *data) return 0; } +static int userptr_lookup_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 scatterlist *sg; + struct hl_userptr *userptr; + bool first = true; + u64 total_npages, npages, sg_start, sg_end; + dma_addr_t dma_addr; + int i; + + spin_lock(&dev_entry->userptr_spinlock); + + list_for_each_entry(userptr, &dev_entry->userptr_list, debugfs_list) { + if (dev_entry->userptr_lookup >= userptr->addr && + dev_entry->userptr_lookup < userptr->addr + userptr->size) { + total_npages = 0; + for_each_sg(userptr->sgt->sgl, sg, userptr->sgt->nents, + i) { + npages = hl_get_sg_info(sg, &dma_addr); + sg_start = userptr->addr + + total_npages * PAGE_SIZE; + sg_end = userptr->addr + + (total_npages + npages) * PAGE_SIZE; + + if (dev_entry->userptr_lookup >= sg_start && + dev_entry->userptr_lookup < sg_end) { + dma_addr += (dev_entry->userptr_lookup - + sg_start); + if (first) { + first = false; + seq_puts(s, "\n"); + seq_puts(s, " user virtual address dma address pid region start region size\n"); + seq_puts(s, "---------------------------------------------------------------------------------------\n"); + } + seq_printf(s, " 0x%-18llx 0x%-16llx %-8u 0x%-16llx %-12llu\n", + dev_entry->userptr_lookup, + (u64)dma_addr, userptr->pid, + userptr->addr, userptr->size); + } + total_npages += npages; + } + } + } + + spin_unlock(&dev_entry->userptr_spinlock); + + if (!first) + seq_puts(s, "\n"); + + return 0; +} + +static ssize_t userptr_lookup_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; + ssize_t rc; + u64 value; + + rc = kstrtoull_from_user(buf, count, 16, &value); + if (rc) + return rc; + + dev_entry->userptr_lookup = value; + + return count; +} + static int mmu_show(struct seq_file *s, void *data) { struct hl_debugfs_entry *entry = s->private; @@ -1175,6 +1246,7 @@ static const struct hl_info_list hl_debugfs_list[] = { {"command_submission_jobs", command_submission_jobs_show, NULL}, {"userptr", userptr_show, NULL}, {"vm", vm_show, NULL}, + {"userptr_lookup", userptr_lookup_show, userptr_lookup_write}, {"mmu", mmu_show, mmu_asid_va_write}, {"engines", engines_show, NULL} }; diff --git a/drivers/misc/habanalabs/common/habanalabs.h b/drivers/misc/habanalabs/common/habanalabs.h index c4a482bdfb7c..1ca3a920ea6d 100644 --- a/drivers/misc/habanalabs/common/habanalabs.h +++ b/drivers/misc/habanalabs/common/habanalabs.h @@ -1816,6 +1816,7 @@ struct hl_debugfs_entry { * @state_dump_sem: protects state_dump. * @addr: next address to read/write from/to in read/write32. * @mmu_addr: next virtual address to translate to physical address in mmu_show. + * @userptr_lookup: the target user ptr to look up for on demand. * @mmu_asid: ASID to use while translating in mmu_show. * @state_dump_head: index of the latest state dump * @i2c_bus: generic u8 debugfs file for bus value to use in i2c_data_read. @@ -1843,6 +1844,7 @@ struct hl_dbg_device_entry { struct rw_semaphore state_dump_sem; u64 addr; u64 mmu_addr; + u64 userptr_lookup; u32 mmu_asid; u32 state_dump_head; u8 i2c_bus; @@ -2648,6 +2650,23 @@ struct hl_ioctl_desc { */ /** + * hl_get_sg_info() - get number of pages and the DMA address from SG list. + * @sg: the SG list. + * @dma_addr: pointer to DMA address to return. + * + * Calculate the number of consecutive pages described by the SG list. Take the + * offset of the address in the first page, add to it the length and round it up + * to the number of needed pages. + */ +static inline u32 hl_get_sg_info(struct scatterlist *sg, dma_addr_t *dma_addr) +{ + *dma_addr = sg_dma_address(sg); + + return ((((*dma_addr) & (PAGE_SIZE - 1)) + sg_dma_len(sg)) + + (PAGE_SIZE - 1)) >> PAGE_SHIFT; +} + +/** * hl_mem_area_inside_range() - Checks whether address+size are inside a range. * @address: The start address of the area we want to validate. * @size: The size in bytes of the area we want to validate. diff --git a/drivers/misc/habanalabs/common/memory.c b/drivers/misc/habanalabs/common/memory.c index 908a3277abaa..b64f87b5e05c 100644 --- a/drivers/misc/habanalabs/common/memory.c +++ b/drivers/misc/habanalabs/common/memory.c @@ -797,23 +797,6 @@ int hl_unreserve_va_block(struct hl_device *hdev, struct hl_ctx *ctx, } /** - * get_sg_info() - get number of pages and the DMA address from SG list. - * @sg: the SG list. - * @dma_addr: pointer to DMA address to return. - * - * Calculate the number of consecutive pages described by the SG list. Take the - * offset of the address in the first page, add to it the length and round it up - * to the number of needed pages. - */ -static u32 get_sg_info(struct scatterlist *sg, dma_addr_t *dma_addr) -{ - *dma_addr = sg_dma_address(sg); - - return ((((*dma_addr) & (PAGE_SIZE - 1)) + sg_dma_len(sg)) + - (PAGE_SIZE - 1)) >> PAGE_SHIFT; -} - -/** * init_phys_pg_pack_from_userptr() - initialize physical page pack from host * memory * @ctx: pointer to the context structure. @@ -863,7 +846,7 @@ static int init_phys_pg_pack_from_userptr(struct hl_ctx *ctx, */ total_npages = 0; for_each_sg(userptr->sgt->sgl, sg, userptr->sgt->nents, i) { - npages = get_sg_info(sg, &dma_addr); + npages = hl_get_sg_info(sg, &dma_addr); total_npages += npages; @@ -892,7 +875,7 @@ static int init_phys_pg_pack_from_userptr(struct hl_ctx *ctx, j = 0; for_each_sg(userptr->sgt->sgl, sg, userptr->sgt->nents, i) { - npages = get_sg_info(sg, &dma_addr); + npages = hl_get_sg_info(sg, &dma_addr); /* align down to physical page size and save the offset */ if (first) { |