diff --git a/drivers/misc/habanalabs/memory.c b/drivers/misc/habanalabs/memory.c index e9e163545584..05919f913300 100644 --- a/drivers/misc/habanalabs/memory.c +++ b/drivers/misc/habanalabs/memory.c @@ -1090,6 +1090,64 @@ vm_type_err: return rc; } +static int mem_ioctl_no_mmu(struct hl_fpriv *hpriv, union hl_mem_args *args) +{ + struct hl_device *hdev = hpriv->hdev; + struct hl_ctx *ctx = hpriv->ctx; + u64 device_addr = 0; + u32 handle = 0; + int rc; + + switch (args->in.op) { + case HL_MEM_OP_ALLOC: + if (args->in.alloc.mem_size == 0) { + dev_err(hdev->dev, + "alloc size must be larger than 0\n"); + rc = -EINVAL; + goto out; + } + + /* Force contiguous as there are no real MMU + * translations to overcome physical memory gaps + */ + args->in.flags |= HL_MEM_CONTIGUOUS; + rc = alloc_device_memory(ctx, &args->in, &handle); + + memset(args, 0, sizeof(*args)); + args->out.handle = (__u64) handle; + break; + + case HL_MEM_OP_FREE: + rc = free_device_memory(ctx, args->in.free.handle); + break; + + case HL_MEM_OP_MAP: + if (args->in.flags & HL_MEM_USERPTR) { + device_addr = args->in.map_host.host_virt_addr; + rc = 0; + } else { + rc = get_paddr_from_handle(ctx, &args->in, + &device_addr); + } + + memset(args, 0, sizeof(*args)); + args->out.device_virt_addr = device_addr; + break; + + case HL_MEM_OP_UNMAP: + rc = 0; + break; + + default: + dev_err(hdev->dev, "Unknown opcode for memory IOCTL\n"); + rc = -ENOTTY; + break; + } + +out: + return rc; +} + int hl_mem_ioctl(struct hl_fpriv *hpriv, void *data) { union hl_mem_args *args = data; @@ -1105,100 +1163,49 @@ int hl_mem_ioctl(struct hl_fpriv *hpriv, void *data) return -EBUSY; } - if (hdev->mmu_enable) { - switch (args->in.op) { - case HL_MEM_OP_ALLOC: - if (!hdev->dram_supports_virtual_memory) { - dev_err(hdev->dev, - "DRAM alloc is not supported\n"); - rc = -EINVAL; - goto out; - } - if (args->in.alloc.mem_size == 0) { - dev_err(hdev->dev, - "alloc size must be larger than 0\n"); - rc = -EINVAL; - goto out; - } - rc = alloc_device_memory(ctx, &args->in, &handle); + if (!hdev->mmu_enable) + return mem_ioctl_no_mmu(hpriv, args); - memset(args, 0, sizeof(*args)); - args->out.handle = (__u64) handle; - break; - - case HL_MEM_OP_FREE: - if (!hdev->dram_supports_virtual_memory) { - dev_err(hdev->dev, - "DRAM free is not supported\n"); - rc = -EINVAL; - goto out; - } - rc = free_device_memory(ctx, args->in.free.handle); - break; - - case HL_MEM_OP_MAP: - rc = map_device_va(ctx, &args->in, &device_addr); - - memset(args, 0, sizeof(*args)); - args->out.device_virt_addr = device_addr; - break; - - case HL_MEM_OP_UNMAP: - rc = unmap_device_va(ctx, - args->in.unmap.device_virt_addr); - break; - - default: - dev_err(hdev->dev, "Unknown opcode for memory IOCTL\n"); - rc = -ENOTTY; - break; + switch (args->in.op) { + case HL_MEM_OP_ALLOC: + if (!hdev->dram_supports_virtual_memory) { + dev_err(hdev->dev, "DRAM alloc is not supported\n"); + rc = -EINVAL; + goto out; } - } else { - switch (args->in.op) { - case HL_MEM_OP_ALLOC: - if (args->in.alloc.mem_size == 0) { - dev_err(hdev->dev, - "alloc size must be larger than 0\n"); - rc = -EINVAL; - goto out; - } - /* Force contiguous as there are no real MMU - * translations to overcome physical memory gaps - */ - args->in.flags |= HL_MEM_CONTIGUOUS; - rc = alloc_device_memory(ctx, &args->in, &handle); - - memset(args, 0, sizeof(*args)); - args->out.handle = (__u64) handle; - break; - - case HL_MEM_OP_FREE: - rc = free_device_memory(ctx, args->in.free.handle); - break; - - case HL_MEM_OP_MAP: - if (args->in.flags & HL_MEM_USERPTR) { - device_addr = args->in.map_host.host_virt_addr; - rc = 0; - } else { - rc = get_paddr_from_handle(ctx, &args->in, - &device_addr); - } - - memset(args, 0, sizeof(*args)); - args->out.device_virt_addr = device_addr; - break; - - case HL_MEM_OP_UNMAP: - rc = 0; - break; - - default: - dev_err(hdev->dev, "Unknown opcode for memory IOCTL\n"); - rc = -ENOTTY; - break; + if (args->in.alloc.mem_size == 0) { + dev_err(hdev->dev, + "alloc size must be larger than 0\n"); + rc = -EINVAL; + goto out; } + rc = alloc_device_memory(ctx, &args->in, &handle); + + memset(args, 0, sizeof(*args)); + args->out.handle = (__u64) handle; + break; + + case HL_MEM_OP_FREE: + rc = free_device_memory(ctx, args->in.free.handle); + break; + + case HL_MEM_OP_MAP: + rc = map_device_va(ctx, &args->in, &device_addr); + + memset(args, 0, sizeof(*args)); + args->out.device_virt_addr = device_addr; + break; + + case HL_MEM_OP_UNMAP: + rc = unmap_device_va(ctx, + args->in.unmap.device_virt_addr); + break; + + default: + dev_err(hdev->dev, "Unknown opcode for memory IOCTL\n"); + rc = -ENOTTY; + break; } out: