diff options
| author |   Tomer Tayar <ttayar@habana.ai> | 2020-07-09 16:17:48 +0300 |
|---|---|---|
| committer |   Oded Gabbay <oded.gabbay@gmail.com> | 2020-09-22 18:49:54 +0300 |
| commit | ef6a0f6caa4a5dbfbb42b642e23fb06182798d30 (patch) | |
| tree | c55f87fb98e6845c184515282f2d169c3e9cb2dc /drivers/misc/habanalabs/common/context.c | |
| parent | habanalabs: Save context in a command buffer object (diff) | |
| download | linux-dev-ef6a0f6caa4a5dbfbb42b642e23fb06182798d30.tar.xz linux-dev-ef6a0f6caa4a5dbfbb42b642e23fb06182798d30.zip | |
habanalabs: Add an option to map CB to device MMU
There are cases in which the device should access the host memory of a
CB through the device MMU, and thus this memory should be mapped.
The patch adds a flag to the CB IOCTL, in which a user can ask the
driver to perform the mapping when creating a CB.
The mapping is allowed only if a dedicated VA range was allocated for
the specific ASIC.
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Diffstat (limited to 'drivers/misc/habanalabs/common/context.c')
| -rw-r--r-- | drivers/misc/habanalabs/common/context.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/misc/habanalabs/common/context.c b/drivers/misc/habanalabs/common/context.c index b168a9fce817..df8171a2226c 100644 --- a/drivers/misc/habanalabs/common/context.c +++ b/drivers/misc/habanalabs/common/context.c @@ -37,6 +37,7 @@ static void hl_ctx_fini(struct hl_ctx *ctx) if ((hdev->in_debug) && (hdev->compute_ctx == ctx)) hl_device_set_debug_mode(hdev, false); + hl_cb_va_pool_fini(ctx); hl_vm_ctx_fini(ctx); hl_asid_free(hdev, ctx->asid); } else { @@ -155,15 +156,24 @@ int hl_ctx_init(struct hl_device *hdev, struct hl_ctx *ctx, bool is_kernel_ctx) goto err_asid_free; } + rc = hl_cb_va_pool_init(ctx); + if (rc) { + dev_err(hdev->dev, + "Failed to init VA pool for mapped CB\n"); + goto err_vm_ctx_fini; + } + rc = hdev->asic_funcs->ctx_init(ctx); if (rc) { dev_err(hdev->dev, "ctx_init failed\n"); - goto err_vm_ctx_fini; + goto err_cb_va_pool_fini; } } return 0; +err_cb_va_pool_fini: + hl_cb_va_pool_fini(ctx); err_vm_ctx_fini: hl_vm_ctx_fini(ctx); err_asid_free: |