diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-4.19/950-0299-staging-vc-sm-cma-Fix-up-for-64bit-builds.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-4.19/950-0299-staging-vc-sm-cma-Fix-up-for-64bit-builds.patch | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0299-staging-vc-sm-cma-Fix-up-for-64bit-builds.patch b/target/linux/bcm27xx/patches-4.19/950-0299-staging-vc-sm-cma-Fix-up-for-64bit-builds.patch new file mode 100644 index 0000000000..521641434b --- /dev/null +++ b/target/linux/bcm27xx/patches-4.19/950-0299-staging-vc-sm-cma-Fix-up-for-64bit-builds.patch @@ -0,0 +1,199 @@ +From 696aa66a971b20e4f00431cb53747f0e4b92bb03 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.org> +Date: Tue, 29 Jan 2019 16:32:57 +0000 +Subject: [PATCH] staging: vc-sm-cma: Fix up for 64bit builds + +There were a number of logging lines that were using +inappropriate formatting under 64bit kernels. + +The kernel_id field passed to/from the VPU was being +abused for storing the struct vc_sm_buffer *. +This breaks with 64bit kernels, so change to using an IDR. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org> +--- + .../staging/vc04_services/vc-sm-cma/vc_sm.c | 60 +++++++++++++++---- + .../vc04_services/vc-sm-cma/vc_sm_cma_vchi.c | 3 +- + 2 files changed, 48 insertions(+), 15 deletions(-) + +--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c ++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm.c +@@ -75,6 +75,9 @@ struct sm_state_t { + struct miscdevice dev; + struct sm_instance *sm_handle; /* Handle for videocore service. */ + ++ spinlock_t kernelid_map_lock; /* Spinlock protecting kernelid_map */ ++ struct idr kernelid_map; ++ + struct mutex map_lock; /* Global map lock. */ + struct list_head buffer_list; /* List of buffer. */ + +@@ -97,6 +100,29 @@ static int sm_inited; + + /* ---- Private Functions ------------------------------------------------ */ + ++static int get_kernel_id(struct vc_sm_buffer *buffer) ++{ ++ int handle; ++ ++ spin_lock(&sm_state->kernelid_map_lock); ++ handle = idr_alloc(&sm_state->kernelid_map, buffer, 0, 0, GFP_KERNEL); ++ spin_unlock(&sm_state->kernelid_map_lock); ++ ++ return handle; ++} ++ ++static struct vc_sm_buffer *lookup_kernel_id(int handle) ++{ ++ return idr_find(&sm_state->kernelid_map, handle); ++} ++ ++static void free_kernel_id(int handle) ++{ ++ spin_lock(&sm_state->kernelid_map_lock); ++ idr_remove(&sm_state->kernelid_map, handle); ++ spin_unlock(&sm_state->kernelid_map_lock); ++} ++ + static int vc_sm_cma_seq_file_show(struct seq_file *s, void *v) + { + struct sm_pde_t *sm_pde; +@@ -129,8 +155,7 @@ static int vc_sm_cma_global_state_show(s + if (!sm_state) + return 0; + +- seq_printf(s, "\nVC-ServiceHandle 0x%x\n", +- (unsigned int)sm_state->sm_handle); ++ seq_printf(s, "\nVC-ServiceHandle %p\n", sm_state->sm_handle); + + /* Log all applicable mapping(s). */ + +@@ -145,7 +170,7 @@ static int vc_sm_cma_global_state_show(s + resource); + seq_printf(s, " NAME %s\n", + resource->name); +- seq_printf(s, " SIZE %d\n", ++ seq_printf(s, " SIZE %zu\n", + resource->size); + seq_printf(s, " DMABUF %p\n", + resource->dma_buf); +@@ -181,7 +206,7 @@ static void vc_sm_add_resource(struct vc + list_add(&buffer->global_buffer_list, &sm_state->buffer_list); + mutex_unlock(&sm_state->map_lock); + +- pr_debug("[%s]: added buffer %p (name %s, size %d)\n", ++ pr_debug("[%s]: added buffer %p (name %s, size %zu)\n", + __func__, buffer, buffer->name, buffer->size); + } + +@@ -194,7 +219,7 @@ static void vc_sm_release_resource(struc + mutex_lock(&sm_state->map_lock); + mutex_lock(&buffer->lock); + +- pr_debug("[%s]: buffer %p (name %s, size %d)\n", ++ pr_debug("[%s]: buffer %p (name %s, size %zu)\n", + __func__, buffer, buffer->name, buffer->size); + + if (buffer->vc_handle && buffer->vpu_state == VPU_MAPPED) { +@@ -443,6 +468,7 @@ vc_sm_cma_import_dmabuf_internal(struct + struct vc_sm_import_result result = { }; + struct dma_buf_attachment *attach = NULL; + struct sg_table *sgt = NULL; ++ dma_addr_t dma_addr; + int ret = 0; + int status; + +@@ -478,21 +504,22 @@ vc_sm_cma_import_dmabuf_internal(struct + } + + import.type = VC_SM_ALLOC_NON_CACHED; +- import.addr = (uint32_t)sg_dma_address(sgt->sgl); ++ dma_addr = sg_dma_address(sgt->sgl); ++ import.addr = (uint32_t)dma_addr; + if ((import.addr & 0xC0000000) != 0xC0000000) { +- pr_err("%s: Expecting an uncached alias for dma_addr %08x\n", +- __func__, import.addr); ++ pr_err("%s: Expecting an uncached alias for dma_addr %pad\n", ++ __func__, &dma_addr); + import.addr |= 0xC0000000; + } + import.size = sg_dma_len(sgt->sgl); + import.allocator = current->tgid; +- import.kernel_id = (uint32_t)buffer; //FIXME: 64 bit support needed. ++ import.kernel_id = get_kernel_id(buffer); + + memcpy(import.name, VC_SM_RESOURCE_NAME_DEFAULT, + sizeof(VC_SM_RESOURCE_NAME_DEFAULT)); + +- pr_debug("[%s]: attempt to import \"%s\" data - type %u, addr %p, size %u\n", +- __func__, import.name, import.type, (void *)import.addr, ++ pr_debug("[%s]: attempt to import \"%s\" data - type %u, addr %pad, size %u\n", ++ __func__, import.name, import.type, &dma_addr, + import.size); + + /* Allocate the videocore buffer. */ +@@ -527,7 +554,7 @@ vc_sm_cma_import_dmabuf_internal(struct + + buffer->attach = attach; + buffer->sgt = sgt; +- buffer->dma_addr = sg_dma_address(sgt->sgl); ++ buffer->dma_addr = dma_addr; + buffer->in_use = 1; + + /* +@@ -559,6 +586,7 @@ error: + vc_sm_cma_vchi_free(sm_state->sm_handle, &free, + &sm_state->int_trans_id); + } ++ free_kernel_id(import.kernel_id); + kfree(buffer); + if (sgt) + dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL); +@@ -586,7 +614,7 @@ vc_sm_vpu_event(struct sm_instance *inst + { + struct vc_sm_released *release = (struct vc_sm_released *)reply; + struct vc_sm_buffer *buffer = +- (struct vc_sm_buffer *)release->kernel_id; ++ lookup_kernel_id(release->kernel_id); + + /* + * FIXME: Need to check buffer is still valid and allocated +@@ -599,6 +627,7 @@ vc_sm_vpu_event(struct sm_instance *inst + buffer->vc_handle = 0; + buffer->vpu_state = VPU_NOT_MAPPED; + mutex_unlock(&buffer->lock); ++ free_kernel_id(release->kernel_id); + + vc_sm_release_resource(buffer, 0); + } +@@ -711,6 +740,9 @@ static int bcm2835_vc_sm_cma_probe(struc + sm_state->pdev = pdev; + mutex_init(&sm_state->map_lock); + ++ spin_lock_init(&sm_state->kernelid_map_lock); ++ idr_init_base(&sm_state->kernelid_map, 1); ++ + pdev->dev.dma_parms = devm_kzalloc(&pdev->dev, + sizeof(*pdev->dev.dma_parms), + GFP_KERNEL); +@@ -735,6 +767,8 @@ static int bcm2835_vc_sm_cma_remove(stru + /* Stop the videocore shared memory service. */ + vc_sm_cma_vchi_stop(&sm_state->sm_handle); + ++ idr_destroy(&sm_state->kernelid_map); ++ + /* Free the memory for the state structure. */ + mutex_destroy(&sm_state->map_lock); + kfree(sm_state); +--- a/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c ++++ b/drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c +@@ -356,8 +356,7 @@ struct sm_instance *vc_sm_cma_vchi_init( + set_user_nice(instance->io_thread, -10); + wake_up_process(instance->io_thread); + +- pr_debug("%s: success - instance 0x%x", __func__, +- (unsigned int)instance); ++ pr_debug("%s: success - instance %p", __func__, instance); + return instance; + + err_close_services: |