diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-12 23:04:28 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-12 23:04:28 -0700 |
| commit | 338c09a94b14c449dd53227e9bea44816668c6a5 (patch) | |
| tree | d07da3a009a93c5a6eb4e1d9216f2ce3b0b67b00 /drivers | |
| parent | ed9ea4ed3a44e8f8e8c7e8a12a05fd73f9ae1fb4 (diff) | |
| parent | 21d8582d480443574d6a8811e25ccb65dff974d5 (diff) | |
| download | linux-338c09a94b14c449dd53227e9bea44816668c6a5.tar.bz2 | |
Merge branch 'topic/omap3isp' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull OMAP3 updates from Mauro Carvalho Chehab:
"Some driver improvements on OMAP3. This series depend on some iommu
patches already merged"
* 'topic/omap3isp' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (26 commits)
[media] omap3isp: Rename isp_buffer isp_addr field to dma
[media] omap3isp: Move to videobuf2
[media] v4l: vb2: Add a function to discard all DONE buffers
[media] omap3isp: Cancel all queued buffers when stopping the video stream
[media] omap3isp: Move buffer irqlist to isp_buffer structure
[media] omap3isp: Move queue irqlock to isp_video structure
[media] omap3isp: Move queue mutex to isp_video structure
[media] omap3isp: queue: Don't build scatterlist for kernel buffer
[media] omap3isp: Use the ARM DMA IOMMU-aware operations
[media] omap3isp: queue: Use sg_alloc_table_from_pages()
[media] omap3isp: queue: Map PFNMAP buffers to device
[media] omap3isp: queue: Fix the dma_map_sg() return value check
[media] omap3isp: queue: Allocate kernel buffers with dma_alloc_coherent
[media] omap3isp: queue: Inline the ispmmu_v(un)map functions
[media] omap3isp: queue: Merge the prepare and sglist functions
[media] omap3isp: queue: Use sg_table structure
[media] omap3isp: queue: Move IOMMU handling code to the queue
[media] omap3isp: video: Set the buffer bytesused field at completion time
[media] omap3isp: ccdc: Use the DMA API for FPC
[media] omap3isp: ccdc: Use the DMA API for LSC
...
Diffstat (limited to 'drivers')
20 files changed, 457 insertions, 1745 deletions
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 20f1655e6d75..8108c698b548 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -93,7 +93,9 @@ config VIDEO_M32R_AR_M64278 config VIDEO_OMAP3 tristate "OMAP 3 Camera support" - depends on OMAP_IOVMM && VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3 + depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3 + select ARM_DMA_USE_IOMMU + select OMAP_IOMMU ---help--- Driver for an OMAP 3 camera controller. diff --git a/drivers/media/platform/omap3isp/Makefile b/drivers/media/platform/omap3isp/Makefile index e8847e79e31a..254975a9174e 100644 --- a/drivers/media/platform/omap3isp/Makefile +++ b/drivers/media/platform/omap3isp/Makefile @@ -3,7 +3,7 @@ ccflags-$(CONFIG_VIDEO_OMAP3_DEBUG) += -DDEBUG omap3-isp-objs += \ - isp.o ispqueue.o ispvideo.o \ + isp.o ispvideo.o \ ispcsiphy.o ispccp2.o ispcsi2.o \ ispccdc.o isppreview.o ispresizer.o \ ispstat.o isph3a_aewb.o isph3a_af.o isphist.o diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 06a0df434249..2c7aa6720569 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -69,6 +69,8 @@ #include <linux/sched.h> #include <linux/vmalloc.h> +#include <asm/dma-iommu.h> + #include <media/v4l2-common.h> #include <media/v4l2-device.h> @@ -1397,14 +1399,14 @@ int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait, if (isp_pipeline_is_last(me)) { struct isp_video *video = pipe->output; unsigned long flags; - spin_lock_irqsave(&video->queue->irqlock, flags); + spin_lock_irqsave(&video->irqlock, flags); if (video->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_UNDERRUN) { - spin_unlock_irqrestore(&video->queue->irqlock, flags); + spin_unlock_irqrestore(&video->irqlock, flags); atomic_set(stopping, 0); smp_mb(); return 0; } - spin_unlock_irqrestore(&video->queue->irqlock, flags); + spin_unlock_irqrestore(&video->irqlock, flags); if (!wait_event_timeout(*wait, !atomic_read(stopping), msecs_to_jiffies(1000))) { atomic_set(stopping, 0); @@ -1625,7 +1627,7 @@ struct isp_device *omap3isp_get(struct isp_device *isp) * Decrement the reference count on the ISP. If the last reference is released, * power-down all submodules, disable clocks and free temporary buffers. */ -void omap3isp_put(struct isp_device *isp) +static void __omap3isp_put(struct isp_device *isp, bool save_ctx) { if (isp == NULL) return; @@ -1634,7 +1636,7 @@ void omap3isp_put(struct isp_device *isp) BUG_ON(isp->ref_count == 0); if (--isp->ref_count == 0) { isp_disable_interrupts(isp); - if (isp->domain) { + if (save_ctx) { isp_save_ctx(isp); isp->has_context = 1; } @@ -1648,6 +1650,11 @@ void omap3isp_put(struct isp_device *isp) mutex_unlock(&isp->isp_mutex); } +void omap3isp_put(struct isp_device *isp) +{ + __omap3isp_put(isp, true); +} + /* -------------------------------------------------------------------------- * Platform device driver */ @@ -2120,6 +2127,61 @@ error_csiphy: return ret; } +static void isp_detach_iommu(struct isp_device *isp) +{ + arm_iommu_release_mapping(isp->mapping); + isp->mapping = NULL; + iommu_group_remove_device(isp->dev); +} + +static int isp_attach_iommu(struct isp_device *isp) +{ + struct dma_iommu_mapping *mapping; + struct iommu_group *group; + int ret; + + /* Create a device group and add the device to it. */ + group = iommu_group_alloc(); + if (IS_ERR(group)) { + dev_err(isp->dev, "failed to allocate IOMMU group\n"); + return PTR_ERR(group); + } + + ret = iommu_group_add_device(group, isp->dev); + iommu_group_put(group); + + if (ret < 0) { + dev_err(isp->dev, "failed to add device to IPMMU group\n"); + return ret; + } + + /* + * Create the ARM mapping, used by the ARM DMA mapping core to allocate + * VAs. This will allocate a corresponding IOMMU domain. + */ + mapping = arm_iommu_create_mapping(&platform_bus_type, SZ_1G, SZ_2G); + if (IS_ERR(mapping)) { + dev_err(isp->dev, "failed to create ARM IOMMU mapping\n"); + ret = PTR_ERR(mapping); + goto error; + } + + isp->mapping = mapping; + + /* Attach the ARM VA mapping to the device. */ + ret = arm_iommu_attach_device(isp->dev, mapping); + if (ret < 0) { + dev_err(isp->dev, "failed to attach device to VA mapping\n"); + goto error; + } + + return 0; + +error: + isp_detach_iommu(isp); + return ret; +} + /* * isp_remove - Remove ISP platform device * @pdev: Pointer to ISP platform device @@ -2135,10 +2197,8 @@ static int isp_remove(struct platform_device *pdev) isp_xclk_cleanup(isp); __omap3isp_get(isp, false); - iommu_detach_device(isp->domain, &pdev->dev); - iommu_domain_free(isp->domain); - isp->domain = NULL; - omap3isp_put(isp); + isp_detach_iommu(isp); + __omap3isp_put(isp, false); return 0; } @@ -2265,39 +2325,32 @@ static int isp_probe(struct platform_device *pdev) } } - isp->domain = iommu_domain_alloc(pdev->dev.bus); - if (!isp->domain) { - dev_err(isp->dev, "can't alloc iommu domain\n"); - ret = -ENOMEM; + /* IOMMU */ + ret = isp_attach_iommu(isp); + if (ret < 0) { + dev_err(&pdev->dev, "unable to attach to IOMMU\n"); goto error_isp; } - ret = iommu_attach_device(isp->domain, &pdev->dev); - if (ret) { - dev_err(&pdev->dev, "can't attach iommu device: %d\n", ret); - ret = -EPROBE_DEFER; - goto free_domain; - } - /* Interrupt */ isp->irq_num = platform_get_irq(pdev, 0); if (isp->irq_num <= 0) { dev_err(isp->dev, "No IRQ resource\n"); ret = -ENODEV; - goto detach_dev; + goto error_iommu; } if (devm_request_irq(isp->dev, isp->irq_num, isp_isr, IRQF_SHARED, "OMAP3 ISP", isp)) { dev_err(isp->dev, "Unable to request IRQ\n"); ret = -EINVAL; - goto detach_dev; + goto error_iommu; } /* Entities */ ret = isp_initialize_modules(isp); if (ret < 0) - goto detach_dev; + goto error_iommu; ret = isp_register_entities(isp); if (ret < 0) @@ -2310,14 +2363,11 @@ static int isp_probe(struct platform_device *pdev) error_modules: isp_cleanup_modules(isp); -detach_dev: - iommu_detach_device(isp->domain, &pdev->dev); -free_domain: - iommu_domain_free(isp->domain); - isp->domain = NULL; +error_iommu: + isp_detach_iommu(isp); error_isp: isp_xclk_cleanup(isp); - omap3isp_put(isp); + __omap3isp_put(isp, false); error: mutex_destroy(&isp->isp_mutex); diff --git a/drivers/media/platform/omap3isp/isp.h b/drivers/media/platform/omap3isp/isp.h index 6d5e69711907..2c314eea1252 100644 --- a/drivers/media/platform/omap3isp/isp.h +++ b/drivers/media/platform/omap3isp/isp.h @@ -45,8 +45,6 @@ #include "ispcsi2.h" #include "ispccp2.h" -#define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8) - #define ISP_TOK_TERM 0xFFFFFFFF /* * terminating token for ISP * modules reg list @@ -152,6 +150,7 @@ struct isp_xclk { * regions. * @mmio_base_phys: Array with physical L4 bus addresses for ISP register * regions. + * @mapping: IOMMU mapping * @stat_lock: Spinlock for handling statistics * @isp_mutex: Mutex for serializing requests to ISP. * @stop_failure: Indicates that an entity failed to stop. @@ -171,7 +170,6 @@ struct isp_xclk { * @isp_res: Pointer to current settings for ISP Resizer. * @isp_prev: Pointer to current settings for ISP Preview. * @isp_ccdc: Pointer to current settings for ISP CCDC. - * @iommu: Pointer to requested IOMMU instance for ISP. * @platform_cb: ISP driver callback function pointers for platform code * * This structure is used to store the OMAP ISP Information. @@ -189,6 +187,8 @@ struct isp_device { void __iomem *mmio_base[OMAP3_ISP_IOMEM_LAST]; unsigned long mmio_base_phys[OMAP3_ISP_IOMEM_LAST]; + struct dma_iommu_mapping *mapping; + /* ISP Obj */ spinlock_t stat_lock; /* common lock for statistic drivers */ struct mutex isp_mutex; /* For handling ref_count field */ @@ -219,8 +219,6 @@ struct isp_device { unsigned int sbl_resources; unsigned int subclk_resources; - - struct iommu_domain *domain; }; #define v4l2_dev_to_isp_device(dev) \ diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index 4d920c800ff5..9f727d20f06d 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -30,7 +30,6 @@ #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/mm.h> -#include <linux/omap-iommu.h> #include <linux/sched.h> #include <linux/slab.h> #include <media/v4l2-event.h> @@ -206,7 +205,8 @@ static int ccdc_lsc_validate_config(struct isp_ccdc_device *ccdc, * ccdc_lsc_program_table - Program Lens Shading Compensation table address. * @ccdc: Pointer to ISP CCDC device. */ -static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc, u32 addr) +static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc, + dma_addr_t addr) { isp_reg_writel(to_isp_device(ccdc), addr, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_TABLE_BASE); @@ -333,7 +333,7 @@ static int __ccdc_lsc_configure(struct isp_ccdc_device *ccdc, return -EBUSY; ccdc_lsc_setup_regs(ccdc, &req->config); - ccdc_lsc_program_table(ccdc, req->table); + ccdc_lsc_program_table(ccdc, req->table.dma); return 0; } @@ -368,11 +368,12 @@ static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc, if (req == NULL) return; - if (req->iovm) - dma_unmap_sg(isp->dev, req->iovm->sgt->sgl, - req->iovm->sgt->nents, DMA_TO_DEVICE); - if (req->table) - omap_iommu_vfree(isp->domain, isp->dev, req->table); + if (req->table.addr) { + sg_free_table(&req->table.sgt); + dma_free_coherent(isp->dev, req->config.size, req->table.addr, + req->table.dma); + } + kfree(req); } @@ -416,7 +417,6 @@ static int ccdc_lsc_config(struct isp_ccdc_device *ccdc, struct isp_device *isp = to_isp_device(ccdc); struct ispccdc_lsc_config_req *req; unsigned long flags; - void *table; u16 update; int ret; @@ -444,38 +444,31 @@ static int ccdc_lsc_config(struct isp_ccdc_device *ccdc, req->enable = 1; - req->table = omap_iommu_vmalloc(isp->domain, isp->dev, 0, - req->config.size, IOMMU_FLAG); - if (IS_ERR_VALUE(req->table)) { - req->table = 0; - ret = -ENOMEM; - goto done; - } - - req->iovm = omap_find_iovm_area(isp->dev, req->table); - if (req->iovm == NULL) { + req->table.addr = dma_alloc_coherent(isp->dev, req->config.size, + &req->table.dma, + GFP_KERNEL); + if (req->table.addr == NULL) { ret = -ENOMEM; goto done; } - if (!dma_map_sg(isp->dev, req->iovm->sgt->sgl, - req->iovm->sgt->nents, DMA_TO_DEVICE)) { - ret = -ENOMEM; - req->iovm = NULL; + ret = dma_get_sgtable(isp->dev, &req->table.sgt, + req->table.addr, req->table.dma, + req->config.size); + if (ret < 0) goto done; - } - dma_sync_sg_for_cpu(isp->dev, req->iovm->sgt->sgl, - req->iovm->sgt->nents, DMA_TO_DEVICE); + dma_sync_sg_for_cpu(isp->dev, req->table.sgt.sgl, + req->table.sgt.nents, DMA_TO_DEVICE); - table = omap_da_to_va(isp->dev, req->table); - if (copy_from_user(table, config->lsc, req->config.size)) { + if (copy_from_user(req->table.addr, config->lsc, + req->config.size)) { ret = -EFAULT; goto done; } - dma_sync_sg_for_device(isp->dev, req->iovm->sgt->sgl, - req->iovm->sgt->nents, DMA_TO_DEVICE); + dma_sync_sg_for_device(isp->dev, req->table.sgt.sgl, + req->table.sgt.nents, DMA_TO_DEVICE); } spin_lock_irqsave(&ccdc->lsc.req_lock, flags); @@ -584,7 +577,7 @@ static void ccdc_configure_fpc(struct isp_ccdc_device *ccdc) if (!ccdc->fpc_en) return; - isp_reg_writel(isp, ccdc->fpc.fpcaddr, OMAP3_ISP_IOMEM_CCDC, + isp_reg_writel(isp, ccdc->fpc.dma, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC_ADDR); /* The FPNUM field must be set before enabling FPC. */ isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT), @@ -724,8 +717,9 @@ static int ccdc_config(struct isp_ccdc_device *ccdc, ccdc->shadow_update = 0; if (OMAP3ISP_CCDC_FPC & ccdc_struct->update) { - u32 table_old = 0; - u32 table_new; + struct omap3isp_ccdc_fpc fpc; + struct ispccdc_fpc fpc_old = { .addr = NULL, }; + struct ispccdc_fpc fpc_new; u32 size; if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED) @@ -734,35 +728,39 @@ static int ccdc_config(struct isp_ccdc_device *ccdc, ccdc->fpc_en = !!(OMAP3ISP_CCDC_FPC & ccdc_struct->flag); if (ccdc->fpc_en) { - if (copy_from_user(&ccdc->fpc, ccdc_struct->fpc, - sizeof(ccdc->fpc))) + if (copy_from_user(&fpc, ccdc_struct->fpc, sizeof(fpc))) return -EFAULT; + size = fpc.fpnum * 4; + /* - * table_new must be 64-bytes aligned, but it's - * already done by omap_iommu_vmalloc(). + * The table address must be 64-bytes aligned, which is + * guaranteed by dma_alloc_coherent(). */ - size = ccdc->fpc.fpnum * 4; - table_new = omap_iommu_vmalloc(isp->domain, isp->dev, - 0, size, IOMMU_FLAG); - if (IS_ERR_VALUE(table_new)) + fpc_new.fpnum = fpc.fpnum; + fpc_new.addr = dma_alloc_coherent(isp->dev, size, + &fpc_new.dma, + GFP_KERNEL); + if (fpc_new.addr == NULL) return -ENOMEM; - if (copy_from_user(omap_da_to_va(isp->dev, table_new), - (__force void __user *) - ccdc->fpc.fpcaddr, size)) { - omap_iommu_vfree(isp->domain, isp->dev, - table_new); + if (copy_from_user(fpc_new.addr, + (__force void __user *)fpc.fpcaddr, + size)) { + dma_free_coherent(isp->dev, size, fpc_new.addr, + fpc_new.dma); return -EFAULT; } - table_old = ccdc->fpc.fpcaddr; - ccdc->fpc.fpcaddr = table_new; + fpc_old = ccdc->fpc; + ccdc->fpc = fpc_new; } ccdc_configure_fpc(ccdc); - if (table_old != 0) - omap_iommu_vfree(isp->domain, isp->dev, table_old); + + if (fpc_old.addr != NULL) + dma_free_coherent(isp->dev, fpc_old.fpnum * 4, + fpc_old.addr, fpc_old.dma); } return ccdc_lsc_config(ccdc, ccdc_struct); @@ -1523,7 +1521,7 @@ static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc) buffer = omap3isp_video_buffer_next(&ccdc->video_out); if (buffer != NULL) { - ccdc_set_outaddr(ccdc, buffer->isp_addr); + ccdc_set_outaddr(ccdc, buffer->dma); restart = 1; } @@ -1662,7 +1660,7 @@ static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer) if (!(ccdc->output & CCDC_OUTPUT_MEMORY)) return -ENODEV; - ccdc_set_outaddr(ccdc, buffer->isp_addr); + ccdc_set_outaddr(ccdc, buffer->dma); /* We now have a buffer queued on the output, restart the pipeline * on the next CCDC interrupt if running in continuous mode (or when @@ -2580,8 +2578,9 @@ void omap3isp_ccdc_cleanup(struct isp_device *isp) cancel_work_sync(&ccdc->lsc.table_work); ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue); - if (ccdc->fpc.fpcaddr != 0) - omap_iommu_vfree(isp->domain, isp->dev, ccdc->fpc.fpcaddr); + if (ccdc->fpc.addr != NULL) + dma_free_coherent(isp->dev, ccdc->fpc.fpnum * 4, ccdc->fpc.addr, + ccdc->fpc.dma); mutex_destroy(&ccdc->ioctl_lock); } diff --git a/drivers/media/platform/omap3isp/ispccdc.h b/drivers/media/platform/omap3isp/ispccdc.h index 9d24e4107864..f65061602c71 100644 --- a/drivers/media/platform/omap3isp/ispccdc.h +++ b/drivers/media/platform/omap3isp/ispccdc.h @@ -46,6 +46,12 @@ enum ccdc_input_entity { #define OMAP3ISP_CCDC_NEVENTS 16 +struct ispccdc_fpc { + void *addr; + dma_addr_t dma; + unsigned int fpnum; +}; + enum ispccdc_lsc_state { LSC_STATE_STOPPED = 0, LSC_STATE_STOPPING = 1, @@ -57,8 +63,12 @@ struct ispccdc_lsc_config_req { struct list_head list; struct omap3isp_ccdc_lsc_config config; unsigned char enable; - u32 table; - struct iovm_struct *iovm; + + struct { + void *addr; + dma_addr_t dma; + struct sg_table sgt; + } table; }; /* @@ -136,7 +146,7 @@ struct isp_ccdc_device { fpc_en:1; struct omap3isp_ccdc_blcomp blcomp; struct omap3isp_ccdc_bclamp clamp; - struct omap3isp_ccdc_fpc fpc; + struct ispccdc_fpc fpc; struct ispccdc_lsc lsc; unsigned int update; unsigned int shadow_update; diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index b30b67d22a58..f3801db9095c 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -549,7 +549,7 @@ static void ccp2_isr_buffer(struct isp_ccp2_device *ccp2) buffer = omap3isp_video_buffer_next(&ccp2->video_in); if (buffer != NULL) - ccp2_set_inaddr(ccp2, buffer->isp_addr); + ccp2_set_inaddr(ccp2, buffer->dma); pipe->state |= ISP_PIPELINE_IDLE_INPUT; @@ -940,7 +940,7 @@ static int ccp2_video_queue(struct isp_video *video, struct isp_buffer *buffer) { struct isp_ccp2_device *ccp2 = &video->isp->isp_ccp2; - ccp2_set_inaddr(ccp2, buffer->isp_addr); + ccp2_set_inaddr(ccp2, buffer->dma); return 0; } diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index 620560828a48..5a2e47e58b84 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -695,7 +695,7 @@ static void csi2_isr_buffer(struct isp_csi2_device *csi2) if (buffer == NULL) return; - csi2_set_outaddr(csi2, buffer->isp_addr); + csi2_set_outaddr(csi2, buffer->dma); csi2_ctx_enable(isp, csi2, 0, 1); } @@ -812,7 +812,7 @@ static int csi2_queue(struct isp_video *video, struct isp_buffer *buffer) struct isp_device *isp = video->isp; struct isp_csi2_device *csi2 = &isp->isp_csi2a; - csi2_set_outaddr(csi2, buffer->isp_addr); + csi2_set_outaddr(csi2, buffer->dma); /* * If streaming was enabled before there was a buffer queued diff --git a/drivers/media/platform/omap3isp/isph3a_aewb.c b/drivers/media/platform/omap3isp/isph3a_aewb.c index 75fd82b152ba..d6811ce263eb 100644 --- a/drivers/media/platform/omap3isp/isph3a_aewb.c +++ b/drivers/media/platform/omap3isp/isph3a_aewb.c @@ -47,7 +47,7 @@ static void h3a_aewb_setup_regs(struct ispstat *aewb, void *priv) if (aewb->state == ISPSTAT_DISABLED) return; - isp_reg_writel(aewb->isp, aewb->active_buf->iommu_addr, + isp_reg_writel(aewb->isp, aewb->active_buf->dma_addr, OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWBUFST); if (!aewb->update) diff --git a/drivers/media/platform/omap3isp/isph3a_af.c b/drivers/media/platform/omap3isp/isph3a_af.c index a0bf5af32438..6fc960cd30f5 100644 --- a/drivers/media/platform/omap3isp/isph3a_af.c +++ b/drivers/media/platform/omap3isp/isph3a_af.c @@ -51,7 +51,7 @@ static void h3a_af_setup_regs(struct ispstat *af, void *priv) if (af->state == ISPSTAT_DISABLED) return; - isp_reg_writel(af->isp, af->active_buf->iommu_addr, OMAP3_ISP_IOMEM_H3A, + isp_reg_writel(af->isp, af->active_buf->dma_addr, OMAP3_ISP_IOMEM_H3A, ISPH3A_AFBUFST); if (!af->update) diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index 395b2b068c75..720809b07e75 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -1499,14 +1499,14 @@ static void preview_isr_buffer(struct isp_prev_device *prev) if (prev->input == PREVIEW_INPUT_MEMORY) { buffer = omap3isp_video_buffer_next(&prev->video_in); if (buffer != NULL) - preview_set_inaddr(prev, buffer->isp_addr); + preview_set_inaddr(prev, buffer->dma); pipe->state |= ISP_PIPELINE_IDLE_INPUT; } if (prev->output & PREVIEW_OUTPUT_MEMORY) { buffer = omap3isp_video_buffer_next(&prev->video_out); if (buffer != NULL) { - preview_set_outaddr(prev, buffer->isp_addr); + preview_set_outaddr(prev, buffer->dma); restart = 1; } pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; @@ -1577,10 +1577,10 @@ static int preview_video_queue(struct isp_video *video, struct isp_prev_device *prev = &video->isp->isp_prev; if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) - preview_set_inaddr(prev, buffer->isp_addr); + preview_set_inaddr(prev, buffer->dma); if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - preview_set_outaddr(prev, buffer->isp_addr); + preview_set_outaddr(prev, buffer->dma); return 0; } diff --git a/drivers/media/platform/omap3isp/ispqueue.c b/drivers/media/platform/omap3isp/ispqueue.c deleted file mode 100644 index a5e65858e799..000000000000 --- a/drivers/media/platform/omap3isp/ispqueue.c +++ /dev/null @@ -1,1161 +0,0 @@ -/* - * ispqueue.c - * - * TI OMAP3 ISP - Video buffers queue handling - * - * Copyright (C) 2010 Nokia Corporation - * - * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> - * Sakari Ailus <sakari.ailus@iki.fi> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ - -#include <asm/cacheflush.h> -#include <linux/dma-mapping.h> -#include <linux/mm.h> -#include <linux/pagemap.h> -#include <linux/poll.h> -#include <linux/scatterlist.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> - -#include "ispqueue.h" - -/* ----------------------------------------------------------------------------- - * Video buffers management - */ - -/* - * isp_video_buffer_cache_sync - Keep the buffers coherent between CPU and ISP - * - * The typical operation required here is Cache Invalidation across - * the (user space) buffer address range. And this _must_ be done - * at QBUF stage (and *only* at QBUF). - * - * We try to use optimal cache invalidation function: - * - dmac_map_area: - * - used when the number of pages are _low_. - * - it becomes quite slow as the number of pages increase. - * - for 648x492 viewfinder (150 pages) it takes 1.3 ms. - * - for 5 Mpix buffer (2491 pages) it takes between 25-50 ms. - * - * - flush_cache_all: - * - used when the number of pages are _high_. - * - time taken in the range of 500-900 us. - * - has a higher penalty but, as whole dcache + icache is invalidated - */ -/* - * FIXME: dmac_inv_range crashes randomly on the user space buffer - * address. Fall back to flush_cache_all for now. - */ -#define ISP_CACHE_FLUSH_PAGES_MAX 0 - -static void isp_video_buffer_cache_sync(struct isp_video_buffer *buf) -{ - if (buf->skip_cache) - return; - - if (buf->vbuf.m.userptr == 0 || buf->npages == 0 || - buf->npages > ISP_CACHE_FLUSH_PAGES_MAX) - flush_cache_all(); - else { - dmac_map_area((void *)buf->vbuf.m.userptr, buf->vbuf.length, - DMA_FROM_DEVICE); - outer_inv_range(buf->vbuf.m.userptr, - buf->vbuf.m.userptr + buf->vbuf.length); - } -} - -/* - * isp_video_buffer_lock_vma - Prevent VMAs from being unmapped - * - * Lock the VMAs underlying the given buffer into memory. This avoids the - * userspace buffer mapping from being swapped out, making VIPT cache handling - * easier. - * - * Note that the pages will not be freed as the buffers have been locked to - * memory using by a call to get_user_pages(), but the userspace mapping could - * still disappear if the VMAs are not locked. This is caused by the memory - * management code trying to be as lock-less as possible, which results in the - * userspace mapping manager not finding out that the pages are locked under - * some conditions. - */ -static int isp_video_buffer_lock_vma(struct isp_video_buffer *buf, int lock) -{ - struct vm_area_struct *vma; - unsigned long start; - unsigned long end; - int ret = 0; - - if (buf->vbuf.memory == V4L2_MEMORY_MMAP) - return 0; - - /* We can be called from workqueue context if the current task dies to - * unlock the VMAs. In that case there's no current memory management - * context so unlocking can't be performed, but the VMAs have been or - * are getting destroyed anyway so it doesn't really matter. - */ - if (!current || !current->mm) - return lock ? -EINVAL : 0; - - start = buf->vbuf.m.userptr; - end = buf->vbuf.m.userptr + buf->vbuf.length - 1; - - down_write(¤t->mm->mmap_sem); - spin_lock(¤t->mm->page_table_lock); - - do { - vma = find_vma(current->mm, start); - if (vma == NULL) { - ret = -EFAULT; - goto out; - } - - if (lock) - vma->vm_flags |= VM_LOCKED; - else - vma->vm_flags &= ~VM_LOCKED; - - start = vma->vm_end + 1; - } while (vma->vm_end < end); - - if (lock) - buf->vm_flags |= VM_LOCKED; - else - buf->vm_flags &= ~VM_LOCKED; - -out: - spin_unlock(¤t->mm->page_table_lock); - up_write(¤t->mm->mmap_sem); - return ret; -} - -/* - * isp_video_buffer_sglist_kernel - Build a scatter list for a vmalloc'ed buffer - * - * Iterate over the vmalloc'ed area and create a scatter list entry for every - * page. - */ -static int isp_video_buffer_sglist_kernel(struct isp_video_buffer *buf) -{ - struct scatterlist *sglist; - unsigned int npages; - unsigned int i; - void *addr; - - addr = buf->vaddr; - npages = PAGE_ALIGN(buf->vbuf.length) >> PAGE_SHIFT; - - sglist = vmalloc(npages * sizeof(*sglist)); - if (sglist == NULL) - return -ENOMEM; - - sg_init_table(sglist, npages); - - for (i = 0; i < npages; ++i, addr += PAGE_SIZE) { - struct page *page = vmalloc_to_page(addr); - - if (page == NULL || PageHighMem(page)) { - vfree(sglist); - return -EINVAL; - } - - sg_set_page(&sglist[i], page, PAGE_SIZE, 0); - } - - buf->sglen = npages; - buf->sglist = sglist; - - return 0; -} - -/* - * isp_video_buffer_sglist_user - Build a scatter list for a userspace buffer - * - * Walk the buffer pages list and create a 1:1 mapping to a scatter list. - */ -static int isp_video_buffer_sglist_user(struct isp_video_buffer *buf) -{ - struct scatterlist *sglist; - unsigned int offset = buf->offset; - unsigned int i; - - sglist = vmalloc(buf->npages * sizeof(*sglist)); - if (sglist == NULL) - return -ENOMEM; - - sg_init_table(sglist, buf->npages); - - for (i = 0; i < buf->npages; ++i) { - if (PageHighMem(buf->pages[i])) { - vfree(sglist); - return -EINVAL; - } - - sg_set_page(&sglist[i], buf->pages[i], PAGE_SIZE - offset, - offset); - offset = 0; - } - - buf->sglen = buf->npages; - buf->sglist = sglist; - - return 0; -} - -/* - * isp_video_buffer_sglist_pfnmap - Build a scatter list for a VM_PFNMAP buffer - * - * Create a scatter list of physically contiguous pages starting at the buffer - * memory physical address. - */ -static int isp_video_buffer_sglist_pfnmap(struct isp_video_buffer *buf) -{ - struct scatterlist *sglist; - unsigned int offset = buf->offset; - unsigned long pfn = buf->paddr >> PAGE_SHIFT; - unsigned int i; - - sglist = vmalloc(buf->npages * sizeof(*sglist)); - if (sglist == NULL) - return -ENOMEM; - - sg_init_table(sglist, buf->npages); - - for (i = 0; i < buf->npages; ++i, ++pfn) { - sg_set_page(&sglist[i], pfn_to_page(pfn), PAGE_SIZE - offset, - offset); - /* PFNMAP buffers will not get DMA-mapped, set the DMA address - * manually. - */ - sg_dma_address(&sglist[i]) = (pfn << PAGE_SHIFT) + offset; - offset = 0; - } - - buf->sglen = buf->npages; - buf->sglist = sglist; - - return 0; -} - -/* - * isp_video_buffer_cleanup - Release pages for a userspace VMA. - * - * Release pages locked by a call isp_video_buffer_prepare_user and free the - * pages table. - */ -static void isp_video_buffer_cleanup(struct isp_video_buffer *buf) -{ - enum dma_data_direction direction; - unsigned int i; - - if (buf->queue->ops->buffer_cleanup) - buf->queue->ops->buffer_cleanup(buf); - - if (!(buf->vm_flags & VM_PFNMAP)) { - direction = buf->vbuf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE - ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - dma_unmap_sg(buf->queue->dev, buf->sglist, buf->sglen, - direction); - } - - vfree(buf->sglist); - buf->sglist = NULL; - buf->sglen = 0; - - if (buf->pages != NULL) { - isp_video_buffer_lock_vma(buf, 0); - - for (i = 0; i < buf->npages; ++i) - page_cache_release(buf->pages[i]); - - vfree(buf->pages); - buf->pages = NULL; - } - - buf->npages = 0; - buf->skip_cache = false; -} - -/* - * isp_video_buffer_prepare_user - Pin userspace VMA pages to memory. - * - * This function creates a list of pages for a userspace VMA. The number of - * pages is first computed based on the buffer size, and pages are then - * retrieved by a call to get_user_pages. - * - * Pages are pinned to memory by get_user_pages, making them available for DMA - * transfers. However, due to memory management optimization, it seems the - * get_user_pages doesn't guarantee that the pinned pages will not be written - * to swap and removed from the userspace mapping(s). When this happens, a page - * fault can be generated when accessing those unmapped pages. - * - * If the fault is triggered by a page table walk caused by VIPT cache - * management operations, the page fault handler might oops if the MM semaphore - * is held, as it can't handle kernel page faults in that case. To fix that, a - * fixup entry needs to be added to the cache management code, or the userspace - * VMA must be locked to avoid removing pages from the userspace mapping in the - * first place. - * - * If the number of pages retrieved is smaller than the number required by the - * buffer size, the function returns -EFAULT. - */ -static int isp_video_buffer_prepare_user(struct isp_video_buffer *buf) -{ - unsigned long data; - unsigned int first; - unsigned int last; - int ret; - - data = buf->vbuf.m.userptr; - first = (data & PAGE_MASK) >> PAGE_SHIFT; - last = ((data + buf->vbuf.length - 1) & PAGE_MASK) >> PAGE_SHIFT; - - buf->offset = data & ~PAGE_MASK; - buf->npages = last - first + 1; - buf->pages = vmalloc(buf->npages * sizeof(buf->pages[0])); - if (buf->pages == NULL) - return -ENOMEM; - - down_read(¤t->mm->mmap_sem); - ret = get_user_pages(current, current->mm, data & PAGE_MASK, - buf->npages, - buf->vbuf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE, 0, - buf->pages, NULL); - up_read(¤t->mm->mmap_sem); - - if (ret != buf->npages) { - buf->npages = ret < 0 ? 0 : ret; - isp_video_buffer_cleanup(buf); - return -EFAULT; - } - - ret = isp_video_buffer_lock_vma(buf, 1); - if (ret < 0) - isp_video_buffer_cleanup(buf); - - return ret; -} - -/* - * isp_video_buffer_prepare_pfnmap - Validate a VM_PFNMAP userspace buffer - * - * Userspace VM_PFNMAP buffers are supported only if they are contiguous in - * memory and if they span a single VMA. - * - * Return 0 if the buffer is valid, or -EFAULT otherwise. - */ -static int isp_video_buffer_prepare_pfnmap(struct isp_video_buffer *buf) -{ - struct vm_area_struct *vma; - unsigned long prev_pfn; - unsigned long this_pfn; - unsigned long start; - unsigned long end; - dma_addr_t pa = 0; - int ret = -EFAULT; - - start = buf->vbuf.m.userptr; - end = buf->vbuf.m.userptr + buf->vbuf.length - 1; - - buf->offset = start & ~PAGE_MASK; - buf->npages = (end >> PAGE_SHIFT) - (start >> PAGE_SHIFT) + 1; - buf->pages = NULL; - - down_read(¤t->mm->mmap_sem); - vma = find_vma(current->mm, start); - if (vma == NULL || vma->vm_end < end) - goto done; - - for (prev_pfn = 0; start <= end; start += PAGE_SIZE) { - ret = follow_pfn(vma, start, &this_pfn); - if (ret) - goto done; - - if (prev_pfn == 0) - pa = this_pfn << PAGE_SHIFT; - else if (this_pfn != prev_pfn + 1) { - ret = -EFAULT; - goto done; - } - - prev_pfn = this_pfn; - } - - buf->paddr = pa + buf->offset; - ret = 0; - -done: - up_read(¤t->mm->mmap_sem); - return ret; -} - -/* - * isp_video_buffer_prepare_vm_flags - Get VMA flags for a userspace address - * - * This function locates the VMAs for the buffer's userspace address and checks - * that their flags match. The only flag that we need to care for at the moment - * is VM_PFNMAP. - * - * The buffer vm_flags field is set to the first VMA flags. - * - * Return -EFAULT if no VMA can be found for part of the buffer, or if the VMAs - * have incompatible flags. - */ -static int isp_video_buffer_prepare_vm_flags(struct isp_video_buffer *buf) -{ - struct vm_area_struct *vma; - pgprot_t uninitialized_var(vm_page_prot); - unsigned long start; - unsigned long end; - int ret = -EFAULT; - - start = buf->vbuf.m.userptr; - end = buf->vbuf.m.userptr + buf->vbuf.length - 1; - - down_read(¤t->mm->mmap_sem); - - do { - vma = find_vma(current->mm, start); - if (vma == NULL) - goto done; - - if (start == buf->vbuf.m.userptr) { - buf->vm_flags = vma->vm_flags; - vm_page_prot = vma->vm_page_prot; - } - - if ((buf->vm_flags ^ vma->vm_flags) & VM_PFNMAP) - goto done; - - if (vm_page_prot != vma->vm_page_prot) - goto done; - - start = vma->vm_end + 1; - } while (vma->vm_end < end); - - /* Skip cache management to enhance performances for non-cached or - * write-combining buffers. - */ - if (vm_page_prot == pgprot_noncached(vm_page_prot) || - vm_page_prot == pgprot_writecombine(vm_page_prot)) - buf->skip_cache = true; - - ret = 0; - -done: - up_read(¤t->mm->mmap_sem); - return ret; -} - -/* - * isp_video_buffer_prepare - Make a buffer ready for operation - * - * Preparing a buffer involves: - * - * - validating VMAs (userspace buffers only) - * - locking pages and VMAs into memory (userspace buffers only) - * - building page and scatter-gather lists - * - mapping buffers for DMA operation - * - performing driver-specific preparation - * - * The function must be called in userspace context with a valid mm context - * (this excludes cleanup paths such as sys_close when the userspace process - * segfaults). - */ -static int isp_video_buffer_prepare(struct isp_video_buffer *buf) -{ - enum dma_data_direction direction; - int ret; - - switch (buf->vbuf.memory) { - case V4L2_MEMORY_MMAP: - ret = isp_video_buffer_sglist_kernel(buf); - break; - - case V4L2_MEMORY_USERPTR: - ret = isp_video_buffer_prepare_vm_flags(buf); - if (ret < 0) - return ret; - - if (buf->vm_flags & VM_PFNMAP) { - ret = isp_video_buffer_prepare_pfnmap(buf); - if (ret < 0) - return ret; - - ret = isp_video_buffer_sglist_pfnmap(buf); - } else { - ret = isp_video_buffer_prepare_user(buf); - if (ret < 0) - return ret; - - ret = isp_video_buffer_sglist_user(buf); - } - break; - - default: - return -EINVAL; - } - - if (ret < 0) - goto done; - - if (!(buf->vm_flags & VM_PFNMAP)) { - direction = buf->vbuf.type == V4L2_BUF_TYPE_VIDEO_CAPTURE - ? DMA_FROM_DEVICE : DMA_TO_DEVICE; - ret = dma_map_sg(buf->queue->dev, buf->sglist, buf->sglen, - direction); - if (ret != buf->sglen) { - ret = -EFAULT; - goto done; - } - } - - if (buf->queue->ops->buffer_prepare) - ret = buf->queue->ops->buffer_prepare(buf); - -done: - if (ret < 0) { - isp_video_buffer_cleanup(buf); - return ret; - } - - return ret; -} - -/* - * isp_video_queue_query - Query the status of a given buffer - * - * Locking: must be called with the queue lock held. - */ -static void isp_video_buffer_query(struct isp_video_buffer *buf, - struct v4l2_buffer *vbuf) -{ - memcpy(vbuf, &buf->vbuf, sizeof(*vbuf)); - - if (buf->vma_use_count) - vbuf->flags |= V4L2_BUF_FLAG_MAPPED; - - switch (buf->state) { - case ISP_BUF_STATE_ERROR: - vbuf->flags |= V4L2_BUF_FLAG_ERROR; - /* Fallthrough */ - case ISP_BUF_STATE_DONE: - vbuf->flags |= V4L2_BUF_FLAG_DONE; - break; - case ISP_BUF_STATE_QUEUED: - case ISP_BUF_STATE_ACTIVE: - vbuf->flags |= V4L2_BUF_FLAG_QUEUED; - break; - case ISP_BUF_STATE_IDLE: - default: - break; - } -} - -/* - * isp_video_buffer_wait - Wait for a buffer to be ready - * - * In non-blocking mode, return immediately with 0 if the buffer is ready or - * -EAGAIN if the buffer is in the QUEUED or ACTIVE state. - * - * In blocking mode, wait (interruptibly but with no timeout) on the buffer wait - * queue using the same condition. - */ -static int isp_video_buffer_wait(struct isp_video_buffer *buf, int nonblocking) -{ - if (nonblocking) { - return (buf->state != ISP_BUF_STATE_QUEUED && - buf->state != ISP_BUF_STATE_ACTIVE) - ? 0 : -EAGAIN; - } - - return wait_event_interruptible(buf->wait, - buf->state != ISP_BUF_STATE_QUEUED && - buf->state != ISP_BUF_STATE_ACTIVE); -} - -/* ----------------------------------------------------------------------------- - * Queue management - */ - -/* - * isp_video_queue_free - Free video buffers memory - * - * Buffers can only be freed if the queue isn't streaming and if no buffer is - * mapped to userspace. Return -EBUSY if those conditions aren't satisfied. - * - * This function must be called with the queue lock held. - */ -static int isp_video_queue_free(struct isp_video_queue *queue) -{ - unsigned int i; - - if (queue->streaming) - return -EBUSY; - - for (i = 0; i < queue->count; ++i) { - if (queue->buffers[i]->vma_use_count != 0) - return -EBUSY; - } - - for (i = 0; i < queue->count; ++i) { - struct isp_video_buffer *buf = queue->buffers[i]; - - isp_video_buffer_cleanup(buf); - - vfree(buf->vaddr); - buf->vaddr = NULL; - - kfree(buf); - queue->buffers[i] = NULL; - } - - INIT_LIST_HEAD(&queue->queue); - queue->count = 0; - return 0; -} - -/* - * isp_video_queue_alloc - Allocate video buffers memory - * - * This function must be called with the queue lock held. - */ -static int isp_video_queue_alloc(struct isp_video_queue *queue, - unsigned int nbuffers, - unsigned int size, enum v4l2_memory memory) -{ - struct isp_video_buffer *buf; - unsigned int i; - void *mem; - int ret; - - /* Start by freeing the buffers. */ - ret = isp_video_queue_free(queue); - if (ret < 0) - return ret; - - /* Bail out if no buffers should be allocated. */ - if (nbuffers == 0) - return 0; - - /* Initialize the allocated buffers. */ - for (i = 0; i < nbuffers; ++i) { - buf = kzalloc(queue->bufsize, GFP_KERNEL); - if (buf == NULL) - break; - - if (memory == V4L2_MEMORY_MMAP) { - /* Allocate video buffers memory for mmap mode. Align - * the size to the page size. - */ - mem = vmalloc_32_user(PAGE_ALIGN(size)); - if (mem == NULL) { - kfree(buf); - break; - } - - buf->vbuf.m.offset = i * PAGE_ALIGN(size); - buf->vaddr = mem; - } - - buf->vbuf.index = i; - buf->vbuf.length = size; - buf->vbuf.type = queue->type; - buf->vbuf.flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - buf->vbuf.field = V4L2_FIELD_NONE; - buf->vbuf.memory = memory; - - buf->queue = queue; - init_waitqueue_head(&buf->wait); - - queue->buffers[i] = buf; - } - - if (i == 0) - return -ENOMEM; - - queue->count = i; - return nbuffers; -} - -/** - * omap3isp_video_queue_cleanup - Clean up the video buffers queue - * @queue: Video buffers queue - * - * Free all allocated resources and clean up the video buffers queue. The queue - * must not be busy (no ongoing video stream) and buffers must have been - * unmapped. - * - * Return 0 on success or -EBUSY if the queue is busy or buffers haven't been - * unmapped. - */ -int omap3isp_video_queue_cleanup(struct isp_video_queue *queue) -{ - return isp_video_queue_free(queue); -} - -/** - * omap3isp_video_queue_init - Initialize the video buffers queue - * @queue: Video buffers queue - * @type: V4L2 buffer type (capture or output) - * @ops: Driver-specific queue operations - * @dev: Device used for DMA operations - * @bufsize: Size of the driver-specific buffer structure - * - * Initialize the video buffers queue with the supplied parameters. - * - * The queue type must be one of V4L2_BUF_TYPE_VIDEO_CAPTURE or - * V4L2_BUF_TYPE_VIDEO_OUTPUT. Other buffer types are not supported yet. - * - * Buffer objects will be allocated using the given buffer size to allow room - * for driver-specific fields. Driver-specific buffer structures must start - * with a struct isp_video_buffer field. Drivers with no driver-specific buffer - * structure must pass the size of the isp_video_buffer structure in the bufsize - * parameter. - * - * Return 0 on success. - */ -int omap3isp_video_queue_init(struct isp_video_queue *queue, - enum v4l2_buf_type type, - const struct isp_video_queue_operations *ops, - struct device *dev, unsigned int bufsize) -{ - INIT_LIST_HEAD(&queue->queue); - mutex_init(&queue->lock); - spin_lock_init(&queue->irqlock); - - queue->type = type; - queue->ops = ops; - queue->dev = dev; - queue->bufsize = bufsize; - - return 0; -} - -/* ----------------------------------------------------------------------------- - * V4L2 operations - */ - -/** - * omap3isp_video_queue_reqbufs - Allocate video buffers memory - * - * This function is intended to be used as a VIDIOC_REQBUFS ioctl handler. It - * allocated video buffer objects and, for MMAP buffers, buffer memory. - * - * If the number of buffers is 0, all buffers are freed and the function returns - * without performing any allocation. - * - * If the number of buffers is not 0, currently allocated buffers (if any) are - * freed and the requested number of buffers are allocated. Depending on - * driver-specific requirements and on memory availability, a number of buffer - * smaller or bigger than requested can be allocated. This isn't considered as - * an error. - * - * Return 0 on success or one of the following error codes: - * - * -EINVAL if the buffer type or index are invalid - * -EBUSY if the queue is busy (streaming or buffers mapped) - * -ENOMEM if the buffers can't be allocated due to an out-of-memory condition - */ -int omap3isp_video_queue_reqbufs(struct isp_video_queue *queue, - struct v4l2_requestbuffers *rb) -{ - unsigned int nbuffers = rb->count; - unsigned int size; - int ret; - - if (rb->type != queue->type) - return -EINVAL; - - queue->ops->queue_prepare(queue, &nbuffers, &size); - if (size == 0) - return -EINVAL; - - nbuffers = min_t(unsigned int, nbuffers, ISP_VIDEO_MAX_BUFFERS); - - mutex_lock(&queue->lock); - - ret = isp_video_queue_alloc(queue, nbuffers, size, rb->memory); - if (ret < 0) - goto done; - - rb->count = ret; - ret = 0; - -done: - mutex_unlock(&queue->lock); - return ret; -} - -/** - * omap3isp_video_queue_querybuf - Query the status of a buffer in a queue - * - * This function is intended to be used as a VIDIOC_QUERYBUF ioctl handler. It - * returns the status of a given video buffer. - * - * Return 0 on success or -EINVAL if the buffer type or index are invalid. - */ -int omap3isp_video_queue_querybuf(struct isp_video_queue *queue, - struct v4l2_buffer *vbuf) -{ - struct isp_video_buffer *buf; - int ret = 0; - - if (vbuf->type != queue->type) - return -EINVAL; - - mutex_lock(&queue->lock); - - if (vbuf->index >= queue->count) { - ret = -EINVAL; - goto done; - } - - buf = queue->buffers[vbuf->index]; - isp_video_buffer_query(buf, vbuf); - -done: - mutex_unlock(&queue->lock); - return ret; -} - -/** - * omap3isp_video_queue_qbuf - Queue a buffer - * - * This function is intended to be used as a VIDIOC_QBUF ioctl handler. - * - * The v4l2_buffer structure passed from userspace is first sanity tested. If - * sane, the buffer is then processed and added to the main queue and, if the - * queue is streaming, to the IRQ queue. - * - * Before being enqueued, USERPTR buffers are checked for address changes. If - * the buffer has a different userspace address, the old memory area is unlocked - * and the new memory area is locked. - */ -int omap3isp_video_queue_qbuf(struct isp_video_queue *queue, - struct v4l2_buffer *vbuf) -{ - struct isp_video_buffer *buf; - unsigned long flags; - int ret = -EINVAL; - - if (vbuf->type != queue->type) - goto done; - - mutex_lock(&queue->lock); - - if (vbuf->index >= queue->count) - goto done; - - buf = queue->buffers[vbuf->index]; - - if (vbuf->memory != buf->vbuf.memory) - goto done; - - if (buf->state != ISP_BUF_STATE_IDLE) - goto done; - - if (vbuf->memory == V4L2_MEMORY_USERPTR && - vbuf->length < buf->vbuf.length) - goto done; - - if (vbuf->memory == V4L2_MEMORY_USERPTR && - vbuf->m.userptr != buf->vbuf.m.userptr) { - isp_video_buffer_cleanup(buf); - buf->vbuf.m.userptr = vbuf->m.userptr; - buf->prepared = 0; - } - - if (!buf->prepared) { - ret = isp_video_buffer_prepare(buf); - if (ret < 0) - goto done; - buf->prepared = 1; - } - - isp_video_buffer_cache_sync(buf); - - buf->state = ISP_BUF_STATE_QUEUED; - list_add_tail(&buf->stream, &queue->queue); - - if (queue->streaming) { - spin_lock_irqsave(&queue->irqlock, flags); - queue->ops->buffer_queue(buf); - spin_unlock_irqrestore(&queue->irqlock, flags); - } - - ret = 0; - -done: - mutex_unlock(&queue->lock); - return ret; -} - -/** - * omap3isp_video_queue_dqbuf - Dequeue a buffer - * - * This function is intended to be used as a VIDIOC_DQBUF ioctl handler. - * - * Wait until a buffer is ready to be dequeued, remove it from the queue and - * copy its information to the v4l2_buffer structure. - * - * If the nonblocking argument is not zero and no buffer is ready, return - * -EAGAIN immediately instead of waiting. - * - * If no buffer has been enqueued, or if the requested buffer type doesn't match - * the queue type, return -EINVAL. - */ -int omap3isp_video_queue_dqbuf(struct isp_video_queue *queue, - struct v4l2_buffer *vbuf, int nonblocking) -{ - struct isp_video_buffer *buf; - int ret; - - if (vbuf->type != queue->type) - return -EINVAL; - - mutex_lock(&queue->lock); - - if (list_empty(&queue->queue)) { - ret = -EINVAL; - goto done; - } - - buf = list_first_entry(&queue->queue, struct isp_video_buffer, stream); - ret = isp_video_buffer_wait(buf, nonblocking); - if (ret < 0) - goto done; - - list_del(&buf->stream); - - isp_video_buffer_query(buf, vbuf); - buf->state = ISP_BUF_STATE_IDLE; - vbuf->flags &= ~V4L2_BUF_FLAG_QUEUED; - -done: - mutex_unlock(&queue->lock); - return ret; -} - -/** - * omap3isp_video_queue_streamon - Start streaming - * - * This function is intended to be used as a VIDIOC_STREAMON ioctl handler. It - * starts streaming on the queue and calls the buffer_queue operation for all - * queued buffers. - * - * Return 0 on success. - */ -int omap3isp_video_queue_streamon(struct isp_video_queue *queue) -{ - struct isp_video_buffer *buf; - unsigned long flags; - - mutex_lock(&queue->lock); - - if (queue->streaming) - goto done; - - queue->streaming = 1; - - spin_lock_irqsave(&queue->irqlock, flags); - list_for_each_entry(buf, &queue->queue, stream) - queue->ops->buffer_queue(buf); - spin_unlock_irqrestore(&queue->irqlock, flags); - -done: - mutex_unlock(&queue->lock); - return 0; -} - -/** - * omap3isp_video_queue_streamoff - Stop streaming - * - * This function is intended to be used as a VIDIOC_STREAMOFF ioctl handler. It - * stops streaming on the queue and wakes up all the buffers. - * - * Drivers must stop the hardware and synchronize with interrupt handlers and/or - * delayed works before calling this function to make sure no buffer will be - * touched by the driver and/or hardware. - */ -void omap3isp_video_queue_streamoff(struct isp_video_queue *queue) -{ - struct isp_video_buffer *buf; - unsigned long flags; - unsigned int i; - - mutex_lock(&queue->lock); - - if (!queue->streaming) - goto done; - - queue->streaming = 0; - - spin_lock_irqsave(&queue->irqlock, flags); - for (i = 0; i < queue->count; ++i) { - buf = queue->buffers[i]; - - if (buf->state == ISP_BUF_STATE_ACTIVE) - wake_up(&buf->wait); - - buf->state = ISP_BUF_STATE_IDLE; - } - spin_unlock_irqrestore(&queue->irqlock, flags); - - INIT_LIST_HEAD(&queue->queue); - -done: - mutex_unlock(&queue->lock); -} - -/** - * omap3isp_video_queue_discard_done - Discard all buffers marked as DONE - * - * This function is intended to be used with suspend/resume operations. It - * discards all 'done' buffers as they would be too old to be requested after - * resume. - * - * Drivers must stop the hardware and synchronize with interrupt handlers and/or - * delayed works before calling this function to make sure no buffer will be - * touched by the driver and/or hardware. - */ -void omap3isp_video_queue_discard_done(struct isp_video_queue *queue) -{ - struct isp_video_buffer *buf; - unsigned int i; - - mutex_lock(&queue->lock); - - if (!queue->streaming) - goto done; - - for (i = 0; i < queue->count; ++i) { - buf = queue->buffers[i]; - - if (buf->state == ISP_BUF_STATE_DONE) - buf->state = ISP_BUF_STATE_ERROR; - } - -done: - mutex_unlock(&queue->lock); -} - -static void isp_video_queue_vm_open(struct vm_area_struct *vma) -{ - struct isp_video_buffer *buf = vma->vm_private_data; - - buf->vma_use_count++; -} - -static void isp_video_queue_vm_close(struct vm_area_struct *vma) -{ - struct isp_video_buffer *buf = vma->vm_private_data; - - buf->vma_use_count--; -} - -static const struct vm_operations_struct isp_video_queue_vm_ops = { - .open = isp_video_queue_vm_open, - .close = isp_video_queue_vm_close, -}; - -/** - * omap3isp_video_queue_mmap - Map buffers to userspace - * - * This function is intended to be used as an mmap() file operation handler. It - * maps a buffer to userspace based on the VMA offset. - * - * Only buffers of memory type MMAP are supported. - */ -int omap3isp_video_queue_mmap(struct isp_video_queue *queue, - struct vm_area_struct *vma) -{ - struct isp_video_buffer *uninitialized_var(buf); - unsigned long size; - unsigned int i; - int ret = 0; - - mutex_lock(&queue->lock); - - for (i = 0; i < queue->count; ++i) { - buf = queue->buffers[i]; - if ((buf->vbuf.m.offset >> PAGE_SHIFT) == vma->vm_pgoff) - break; - } - - if (i == queue->count) { - ret = -EINVAL; - goto done; - } - - size = vma->vm_end - vma->vm_start; - - if (buf->vbuf.memory != V4L2_MEMORY_MMAP || - size != PAGE_ALIGN(buf->vbuf.length)) { - ret = -EINVAL; - goto done; - } - - ret = remap_vmalloc_range(vma, buf->vaddr, 0); - if (ret < 0) - goto done; - - vma->vm_ops = &isp_video_queue_vm_ops; - vma->vm_private_data = buf; - isp_video_queue_vm_open(vma); - -done: - mutex_unlock(&queue->lock); - return ret; -} - -/** - * omap3isp_video_queue_poll - Poll video queue state - * - * This function is intended to be used as a poll() file operation handler. It - * polls the state of the video buffer at the front of the queue and returns an - * events mask. - * - * If no buffer is present at the front of the queue, POLLERR is returned. - */ -unsigned int omap3isp_video_queue_poll(struct isp_video_queue *queue, - struct file *file, poll_table *wait) -{ - struct isp_video_buffer *buf; - unsigned int mask = 0; - - mutex_lock(&queue->lock); - if (list_empty(&queue->queue)) { - mask |= POLLERR; - goto done; - } - buf = list_first_entry(&queue->queue, struct isp_video_buffer, stream); - - poll_wait(file, &buf->wait, wait); - if (buf->state == ISP_BUF_STATE_DONE || - buf->state == ISP_BUF_STATE_ERROR) { - if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - mask |= POLLIN | POLLRDNORM; - else - mask |= POLLOUT | POLLWRNORM; - } - -done: - mutex_unlock(&queue->lock); - return mask; -} diff --git a/drivers/media/platform/omap3isp/ispqueue.h b/drivers/media/platform/omap3isp/ispqueue.h deleted file mode 100644 index 3e048ad65647..000000000000 --- a/drivers/media/platform/omap3isp/ispqueue.h +++ /dev/null @@ -1,188 +0,0 @@ -/* - * ispqueue.h - * - * TI OMAP3 ISP - Video buffers queue handling - * - * Copyright (C) 2010 Nokia Corporation - * - * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> - * Sakari Ailus <sakari.ailus@iki.fi> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA - * 02110-1301 USA - */ - -#ifndef OMAP3_ISP_QUEUE_H -#define OMAP3_ISP_QUEUE_H - -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/mm_types.h> -#include <linux/mutex.h> -#include <linux/videodev2.h> -#include <linux/wait.h> - -struct isp_video_queue; -struct page; -struct scatterlist; - -#define ISP_VIDEO_MAX_BUFFERS 16 - -/** - * enum isp_video_buffer_state - ISP video buffer state - * @ISP_BUF_STATE_IDLE: The buffer is under userspace control (dequeued - * or not queued yet). - * @ISP_BUF_STATE_QUEUED: The buffer has been queued but isn't used by the - * device yet. - * @ISP_BUF_STATE_ACTIVE: The buffer is in use for an active video transfer. - * @ISP_BUF_STATE_ERROR: The device is done with the buffer and an error - * occurred. For capture device the buffer likely contains corrupted data or - * no data at all. - * @ISP_BUF_STATE_DONE: The device is done with the buffer and no error occurred. - * For capture devices the buffer contains valid data. - */ -enum isp_video_buffer_state { - ISP_BUF_STATE_IDLE, - ISP_BUF_STATE_QUEUED, - ISP_BUF_STATE_ACTIVE, - ISP_BUF_STATE_ERROR, - ISP_BUF_STATE_DONE, -}; - -/** - * struct isp_video_buffer - ISP video buffer - * @vma_use_count: Number of times the buffer is mmap'ed to userspace - * @stream: List head for insertion into main queue - * @queue: ISP buffers queue this buffer belongs to - * @prepared: Whether the buffer has been prepared - * @skip_cache: Whether to skip cache management operations for this buffer - * @vaddr: Memory virtual address (for kernel buffers) - * @vm_flags: Buffer VMA flags (for userspace buffers) - * @offset: Offset inside the first page (for userspace buffers) - * @npages: Number of pages (for userspace buffers) - * @pages: Pages table (for userspace non-VM_PFNMAP buffers) - * @paddr: Memory physical address (for userspace VM_PFNMAP buffers) - * @sglen: Number of elements in the scatter list (for non-VM_PFNMAP buffers) - * @sglist: Scatter list (for non-VM_PFNMAP buffers) - * @vbuf: V4L2 buffer - * @irqlist: List head for insertion into IRQ queue - * @state: Current buffer state - * @wait: Wait queue to signal buffer completion - */ -struct isp_video_buffer { - unsigned long vma_use_count; - struct list_head stream; - struct isp_video_queue *queue; - unsigned int prepared:1; - bool skip_cache; - - /* For kernel buffers. */ - void *vaddr; - - /* For userspace buffers. */ - vm_flags_t vm_flags; - unsigned long offset; - unsigned int npages; - struct page **pages; - dma_addr_t paddr; - - /* For all buffers except VM_PFNMAP. */ - unsigned int sglen; - struct scatterlist *sglist; - - /* Touched by the interrupt handler. */ - struct v4l2_buffer vbuf; - struct list_head irqlist; - enum isp_video_buffer_state state; - wait_queue_head_t wait; -}; - -#define to_isp_video_buffer(vb) container_of(vb, struct isp_video_buffer, vb) - -/** - * struct isp_video_queue_operations - Driver-specific operations - * @queue_prepare: Called before allocating buffers. Drivers should clamp the - * number of buffers according to their requirements, and must return the - * buffer size in bytes. - * @buffer_prepare: Called the first time a buffer is queued, or after changing - * the userspace memory address for a USERPTR buffer, with the queue lock - * held. Drivers should perform device-specific buffer preparation (such as - * mapping the buffer memory in an IOMMU). This operation is optional. - * @buffer_queue: Called when a buffer is being added to the queue with the - * queue irqlock spinlock held. - * @buffer_cleanup: Called before freeing buffers, or before changing the - * userspace memory address for a USERPTR buffer, with the queue lock held. - * Drivers must perform cleanup operations required to undo the - * buffer_prepare call. This operation is optional. - */ -struct isp_video_queue_operations { - void (*queue_prepare)(struct isp_video_queue *queue, - unsigned int *nbuffers, unsigned int *size); - int (*buffer_prepare)(struct isp_video_buffer *buf); - void (*buffer_queue)(struct isp_video_buffer *buf); - void (*buffer_cleanup)(struct isp_video_buffer *buf); -}; - -/** - * struct isp_video_queue - ISP video buffers queue - * @type: Type of video buffers handled by this queue - * @ops: Queue operations - * @dev: Device used for DMA operations - * @bufsize: Size of a driver-specific buffer object - * @count: Number of currently allocated buffers - * @buffers: ISP video buffers - * @lock: Mutex to protect access to the buffers, main queue and state - * @irqlock: Spinlock to protect access to the IRQ queue - * @streaming: Queue state, indicates whether the queue is streaming - * @queue: List of all queued buffers - */ -struct isp_video_queue { - enum v4l2_buf_type type; - const struct isp_video_queue_operations *ops; - struct device *dev; - unsigned int bufsize; - - unsigned int count; - struct isp_video_buffer *buffers[ISP_VIDEO_MAX_BUFFERS]; - struct mutex lock; - spinlock_t irqlock; - - unsigned int streaming:1; - - struct list_head queue; -}; - -int omap3isp_video_queue_cleanup(struct isp_video_queue *queue); -int omap3isp_video_queue_init(struct isp_video_queue *queue, - enum v4l2_buf_type type, - const struct isp_video_queue_operations *ops, - struct device *dev, unsigned int bufsize); - -int omap3isp_video_queue_reqbufs(struct isp_video_queue *queue, - struct v4l2_requestbuffers *rb); -int omap3isp_video_queue_querybuf(struct isp_video_queue *queue, - struct v4l2_buffer *vbuf); -int omap3isp_video_queue_qbuf(struct isp_video_queue *queue, - struct v4l2_buffer *vbuf); -int omap3isp_video_queue_dqbuf(struct isp_video_queue *queue, - struct v4l2_buffer *vbuf, int nonblocking); -int omap3isp_video_queue_streamon(struct isp_video_queue *queue); -void omap3isp_video_queue_streamoff(struct isp_video_queue *queue); -void omap3isp_video_queue_discard_done(struct isp_video_queue *queue); -int omap3isp_video_queue_mmap(struct isp_video_queue *queue, - struct vm_area_struct *vma); -unsigned int omap3isp_video_queue_poll(struct isp_video_queue *queue, - struct file *file, poll_table *wait); - -#endif /* OMAP3_ISP_QUEUE_H */ diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index 86369df81d74..6f077c2377db 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1040,7 +1040,7 @@ static void resizer_isr_buffer(struct isp_res_device *res) */ buffer = omap3isp_video_buffer_next(&res->video_out); if (buffer != NULL) { - resizer_set_outaddr(res, buffer->isp_addr); + resizer_set_outaddr(res, buffer->dma); restart = 1; } @@ -1049,7 +1049,7 @@ static void resizer_isr_buffer(struct isp_res_device *res) if (res->input == RESIZER_INPUT_MEMORY) { buffer = omap3isp_video_buffer_next(&res->video_in); if (buffer != NULL) - resizer_set_inaddr(res, buffer->isp_addr); + resizer_set_inaddr(res, buffer->dma); pipe->state |= ISP_PIPELINE_IDLE_INPUT; } @@ -1101,7 +1101,7 @@ static int resizer_video_queue(struct isp_video *video, struct isp_res_device *res = &video->isp->isp_res; if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) - resizer_set_inaddr(res, buffer->isp_addr); + resizer_set_inaddr(res, buffer->dma); /* * We now have a buffer queued on the output. Despite what the @@ -1116,7 +1116,7 @@ static int resizer_video_queue(struct isp_video *video, * continuous mode or when starting the stream. */ if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - resizer_set_outaddr(res, buffer->isp_addr); + resizer_set_outaddr(res, buffer->dma); return 0; } diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c index 5707f85c4cc4..e6cbc1eaf4ca 100644 --- a/drivers/media/platform/omap3isp/ispstat.c +++ b/drivers/media/platform/omap3isp/ispstat.c @@ -26,13 +26,12 @@ */ #include <linux/dma-mapping.h> -#include <linux/omap-iommu.h> #include <linux/slab.h> #include <linux/uaccess.h> #include "isp.h" -#define IS_COHERENT_BUF(stat) ((stat)->dma_ch >= 0) +#define ISP_STAT_USES_DMAENGINE(stat) ((stat)->dma_ch >= 0) /* * MAGIC_SIZE must always be the greatest common divisor of @@ -77,21 +76,10 @@ static void __isp_stat_buf_sync_magic(struct ispstat *stat, dma_addr_t, unsigned long, size_t, enum dma_data_direction)) { - struct device *dev = stat->isp->dev; - struct page *pg; - dma_addr_t dma_addr; - u32 offset; - - /* Initial magic words */ - pg = vmalloc_to_page(buf->virt_addr); - dma_addr = pfn_to_dma(dev, page_to_pfn(pg)); - dma_sync(dev, dma_addr, 0, MAGIC_SIZE, dir); - - /* Final magic words */ - pg = vmalloc_to_page(buf->virt_addr + buf_size); - dma_addr = pfn_to_dma(dev, page_to_pfn(pg)); - offset = ((u32)buf->virt_addr + buf_size) & ~PAGE_MASK; - dma_sync(dev, dma_addr, offset, MAGIC_SIZE, dir); + /* Sync the initial and final magic words. */ + dma_sync(stat->isp->dev, buf->dma_addr, 0, MAGIC_SIZE, dir); + dma_sync(stat->isp->dev, buf->dma_addr + (buf_size & PAGE_MASK), + buf_size & ~PAGE_MASK, MAGIC_SIZE, dir); } static void isp_stat_buf_sync_magic_for_device(struct ispstat *stat, @@ -99,7 +87,7 @@ static void isp_stat_buf_sync_magic_for_device(struct ispstat *stat, u32 buf_size, enum dma_data_direction dir) { - if (IS_COHERENT_BUF(stat)) + if (ISP_STAT_USES_DMAENGINE(stat)) return; __isp_stat_buf_sync_magic(stat, buf, buf_size, dir, @@ -111,7 +99,7 @@ static void isp_stat_buf_sync_magic_for_cpu(struct ispstat *stat, u32 buf_size, enum dma_data_direction dir) { - if (IS_COHERENT_BUF(stat)) + if (ISP_STAT_USES_DMAENGINE(stat)) return; __isp_stat_buf_sync_magic(stat, buf, buf_size, dir, @@ -180,21 +168,21 @@ static void isp_stat_buf_insert_magic(struct ispstat *stat, static void isp_stat_buf_sync_for_device(struct ispstat *stat, struct ispstat_buffer *buf) { - if (IS_COHERENT_BUF(stat)) + if (ISP_STAT_USES_DMAENGINE(stat)) return; - dma_sync_sg_for_device(stat->isp->dev, buf->iovm->sgt->sgl, - buf->iovm->sgt->nents, DMA_FROM_DEVICE); + dma_sync_sg_for_device(stat->isp->dev, buf->sgt.sgl, + buf->sgt.nents, DMA_FROM_DEVICE); } static void isp_stat_buf_sync_for_cpu(struct ispstat *stat, struct ispstat_buffer *buf) { - if (IS_COHERENT_BUF(stat)) + if (ISP_STAT_USES_DMAENGINE(stat)) return; - dma_sync_sg_for_cpu(stat->isp->dev, buf->iovm->sgt->sgl, - buf->iovm->sgt->nents, DMA_FROM_DEVICE); + dma_sync_sg_for_cpu(stat->isp->dev, buf->sgt.sgl, + buf->sgt.nents, DMA_FROM_DEVICE); } static void isp_stat_buf_clear(struct ispstat *stat) @@ -354,29 +342,21 @@ static struct ispstat_buffer *isp_stat_buf_get(struct ispstat *stat, static void isp_stat_bufs_free(struct ispstat *stat) { - struct isp_device *isp = stat->isp; - int i; + struct device *dev = ISP_STAT_USES_DMAENGINE(stat) + ? NULL : stat->isp->dev; + unsigned int i; for (i = 0; i < STAT_MAX_BUFS; i++) { struct ispstat_buffer *buf = &stat->buf[i]; - if (!IS_COHERENT_BUF(stat)) { - if (IS_ERR_OR_NULL((void *)buf->iommu_addr)) - continue; - if (buf->iovm) - dma_unmap_sg(isp->dev, buf->iovm->sgt->sgl, - buf->iovm->sgt->nents, - DMA_FROM_DEVICE); - omap_iommu_vfree(isp->domain, isp->dev, - buf->iommu_addr); - } else { - if (!buf->virt_addr) - continue; - dma_free_coherent(stat->isp->dev, stat->buf_alloc_size, - buf->virt_addr, buf->dma_addr); - } - buf->iommu_addr = 0; - buf->iovm = NULL; + if (!buf->virt_addr) + continue; + + sg_free_table(&buf->sgt); + + dma_free_coherent(dev, stat->buf_alloc_size, buf->virt_addr, + buf->dma_addr); + buf->dma_addr = 0; buf->virt_addr = NULL; buf->empty = 1; @@ -389,83 +369,51 @@ static void isp_stat_bufs_free(struct ispstat *stat) stat->active_buf = NULL; } -static int isp_stat_bufs_alloc_iommu(struct ispstat *stat, unsigned int size) -{ - struct isp_device *isp = stat->isp; - int i; - - stat->buf_alloc_size = size; - - for (i = 0; i < STAT_MAX_BUFS; i++) { - struct ispstat_buffer *buf = &stat->buf[i]; - struct iovm_struct *iovm; - - WARN_ON(buf->dma_addr); - buf->iommu_addr = omap_iommu_vmalloc(isp->domain, isp->dev, 0, - size, IOMMU_FLAG); - if (IS_ERR((void *)buf->iommu_addr)) { - dev_err(stat->isp->dev, - "%s: Can't acquire memory for " - "buffer %d\n", stat->subdev.name, i); - isp_stat_bufs_free(stat); - return -ENOMEM; - } - - iovm = omap_find_iovm_area(isp->dev, buf->iommu_addr); - if (!iovm || - !dma_map_sg(isp->dev, iovm->sgt->sgl, iovm->sgt->nents, - DMA_FROM_DEVICE)) { - isp_stat_bufs_free(stat); - return -ENOMEM; - } - buf->iovm = iovm; - - buf->virt_addr = omap_da_to_va(stat->isp->dev, - (u32)buf->iommu_addr); - buf->empty = 1; - dev_dbg(stat->isp->dev, "%s: buffer[%d] allocated." - "iommu_addr=0x%08lx virt_addr=0x%08lx", - stat->subdev.name, i, buf->iommu_addr, - (unsigned long)buf->virt_addr); - } - - return 0; -} - -static int isp_stat_bufs_alloc_dma(struct ispstat *stat, unsigned int size) +static int isp_stat_bufs_alloc_one(struct device *dev, + struct ispstat_buffer *buf, + unsigned int size) { - int i; - - stat->buf_alloc_size = size; - - for (i = 0; i < STAT_MAX_BUFS; i++) { - struct ispstat_buffer *buf = &stat->buf[i]; - - WARN_ON(buf->iommu_addr); - buf->virt_addr = dma_alloc_coherent(stat->isp->dev, size, - &buf->dma_addr, GFP_KERNEL | GFP_DMA); + int ret; - if (!buf->virt_addr || !buf->dma_addr) { - dev_info(stat->isp->dev, - "%s: Can't acquire memory for " - "DMA buffer %d\n", stat->subdev.name, i); - isp_stat_bufs_free(stat); - return -ENOMEM; - } - buf->empty = 1; + buf->virt_addr = dma_alloc_coherent(dev, size, &buf->dma_addr, + GFP_KERNEL | GFP_DMA); + if (!buf->virt_addr) + return -ENOMEM; - dev_dbg(stat->isp->dev, "%s: buffer[%d] allocated." - "dma_addr=0x%08lx virt_addr=0x%08lx\n", - stat->subdev.name, i, (unsigned long)buf->dma_addr, - (unsigned long)buf->virt_addr); + ret = dma_get_sgtable(dev, &buf->sgt, buf->virt_addr, buf->dma_addr, + size); + if (ret < 0) { + dma_free_coherent(dev, size, buf->virt_addr, buf->dma_addr); + buf->virt_addr = NULL; + buf->dma_addr = 0; + return ret; } return 0; } +/* + * The device passed to the DMA API depends on whether the statistics block uses + * ISP DMA, external DMA or PIO to transfer data. + * + * The first case (for the AEWB and AF engines) passes the ISP device, resulting + * in the DMA buffers being mapped through the ISP IOMMU. + * + * The second case (for the histogram engine) should pass the DMA engine device. + * As that device isn't accessible through the OMAP DMA engine API the driver + * passes NULL instead, resulting in the buffers being mapped directly as + * physical pages. + * + * The third case (for the histogram engine) doesn't require any mapping. The + * buffers could be allocated with kmalloc/vmalloc, but we still use + * dma_alloc_coherent() for consistency purpose. + */ static int isp_stat_bufs_alloc(struct ispstat *stat, u32 size) { + struct device *dev = ISP_STAT_USES_DMAENGINE(stat) + ? NULL : stat->isp->dev; unsigned long flags; + unsigned int i; spin_lock_irqsave(&stat->isp->stat_lock, flags); @@ -489,10 +437,31 @@ static int isp_stat_bufs_alloc(struct ispstat *stat, u32 size) isp_stat_bufs_free(stat); - if (IS_COHERENT_BUF(stat)) - return isp_stat_bufs_alloc_dma(stat, size); - else - return isp_stat_bufs_alloc_iommu(stat, size); + stat->buf_alloc_size = size; + + for (i = 0; i < STAT_MAX_BUFS; i++) { + struct ispstat_buffer *buf = &stat->buf[i]; + int ret; + + ret = isp_stat_bufs_alloc_one(dev, buf, size); + if (ret < 0) { + dev_err(stat->isp->dev, + "%s: Failed to allocate DMA buffer %u\n", + stat->subdev.name, i); + isp_stat_bufs_free(stat); + return ret; + } + + buf->empty = 1; + + dev_dbg(stat->isp->dev, + "%s: buffer[%u] allocated. dma=0x%08lx virt=0x%08lx", + stat->subdev.name, i, + (unsigned long)buf->dma_addr, + (unsigned long)buf->virt_addr); + } + + return 0; } static void isp_stat_queue_event(struct ispstat *stat, int err) diff --git a/drivers/media/platform/omap3isp/ispstat.h b/drivers/media/platform/omap3isp/ispstat.h index 9a047c929b9f..58d6ac7cb664 100644 --- a/drivers/media/platform/omap3isp/ispstat.h +++ b/drivers/media/platform/omap3isp/ispstat.h @@ -46,8 +46,7 @@ struct ispstat; struct ispstat_buffer { - unsigned long iommu_addr; - struct iovm_struct *iovm; + struct sg_table sgt; void *virt_addr; dma_addr_t dma_addr; struct timespec ts; diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 85b4036ba5e4..e36bac26476c 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -27,7 +27,6 @@ #include <linux/clk.h> #include <linux/mm.h> #include <linux/module.h> -#include <linux/omap-iommu.h> #include <linux/pagemap.h> #include <linux/scatterlist.h> #include <linux/sched.h> @@ -35,6 +34,7 @@ #include <linux/vmalloc.h> #include <media/v4l2-dev.h> #include <media/v4l2-ioctl.h> +#include <media/videobuf2-dma-contig.h> #include "ispvideo.h" #include "isp.h" @@ -326,90 +326,36 @@ isp_video_check_format(struct isp_video *video, struct isp_video_fh *vfh) } /* ----------------------------------------------------------------------------- - * IOMMU management - */ - -#define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8) - -/* - * ispmmu_vmap - Wrapper for Virtual memory mapping of a scatter gather list - * @isp: Device pointer specific to the OMAP3 ISP. - * @sglist: Pointer to source Scatter gather list to allocate. - * @sglen: Number of elements of the scatter-gatter list. - * - * Returns a resulting mapped device address by the ISP MMU, or -ENOMEM if - * we ran out of memory. - */ -static dma_addr_t -ispmmu_vmap(struct isp_device *isp, const struct scatterlist *sglist, int sglen) -{ - struct sg_table *sgt; - u32 da; - - sgt = kmalloc(sizeof(*sgt), GFP_KERNEL); - if (sgt == NULL) - return -ENOMEM; - - sgt->sgl = (struct scatterlist *)sglist; - sgt->nents = sglen; - sgt->orig_nents = sglen; - - da = omap_iommu_vmap(isp->domain, isp->dev, 0, sgt, IOMMU_FLAG); - if (IS_ERR_VALUE(da)) - kfree(sgt); - - return da; -} - -/* - * ispmmu_vunmap - Unmap a device address from the ISP MMU - * @isp: Device pointer specific to the OMAP3 ISP. - * @da: Device address generated from a ispmmu_vmap call. - */ -static void ispmmu_vunmap(struct isp_device *isp, dma_addr_t da) -{ - struct sg_table *sgt; - - sgt = omap_iommu_vunmap(isp->domain, isp->dev, (u32)da); - kfree(sgt); -} - -/* ----------------------------------------------------------------------------- * Video queue operations */ -static void isp_video_queue_prepare(struct isp_video_queue *queue, - unsigned int *nbuffers, unsigned int *size) +static int isp_video_queue_setup(struct vb2_queue *queue, + const struct v4l2_format *fmt, + unsigned int *count, unsigned int *num_planes, + unsigned int sizes[], void *alloc_ctxs[]) { - struct isp_video_fh *vfh = - container_of(queue, struct isp_video_fh, queue); + struct isp_video_fh *vfh = vb2_get_drv_priv(queue); struct isp_video *video = vfh->video; - *size = vfh->format.fmt.pix.sizeimage; - if (*size == 0) - return; + *num_planes = 1; - *nbuffers = min(*nbuffers, video->capture_mem / PAGE_ALIGN(*size)); -} + sizes[0] = vfh->format.fmt.pix.sizeimage; + if (sizes[0] == 0) + return -EINVAL; -static void isp_video_buffer_cleanup(struct isp_video_buffer *buf) -{ - struct isp_video_fh *vfh = isp_video_queue_to_isp_video_fh(buf->queue); - struct isp_buffer *buffer = to_isp_buffer(buf); - struct isp_video *video = vfh->video; + alloc_ctxs[0] = video->alloc_ctx; - if (buffer->isp_addr) { - ispmmu_vunmap(video->isp, buffer->isp_addr); - buffer->isp_addr = 0; - } + *count = min(*count, video->capture_mem / PAGE_ALIGN(sizes[0])); + + return 0; } -static int isp_video_buffer_prepare(struct isp_video_buffer *buf) +static int isp_video_buffer_prepare(struct vb2_buffer *buf) { - struct isp_video_fh *vfh = isp_video_queue_to_isp_video_fh(buf->queue); + struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue); struct isp_buffer *buffer = to_isp_buffer(buf); struct isp_video *video = vfh->video; - unsigned long addr; + dma_addr_t addr; /* Refuse to prepare the buffer is the video node has registered an * error. We don't need to take any lock here as the operation is @@ -420,19 +366,16 @@ static int isp_video_buffer_prepare(struct isp_video_buffer *buf) if (unlikely(video->error)) return -EIO; - addr = ispmmu_vmap(video->isp, buf->sglist, buf->sglen); - if (IS_ERR_VALUE(addr)) - return -EIO; - + addr = vb2_dma_contig_plane_dma_addr(buf, 0); if (!IS_ALIGNED(addr, 32)) { - dev_dbg(video->isp->dev, "Buffer address must be " - "aligned to 32 bytes boundary.\n"); - ispmmu_vunmap(video->isp, buffer->isp_addr); + dev_dbg(video->isp->dev, + "Buffer address must be aligned to 32 bytes boundary.\n"); return -EINVAL; } - buf->vbuf.bytesused = vfh->format.fmt.pix.sizeimage; - buffer->isp_addr = addr; + vb2_set_plane_payload(&buffer->vb, 0, vfh->format.fmt.pix.sizeimage); + buffer->dma = addr; + return 0; } @@ -445,9 +388,9 @@ static int isp_video_buffer_prepare(struct isp_video_buffer *buf) * If the pipeline is busy, it will be restarted in the output module interrupt * handler. */ -static void isp_video_buffer_queue(struct isp_video_buffer *buf) +static void isp_video_buffer_queue(struct vb2_buffer *buf) { - struct isp_video_fh *vfh = isp_video_queue_to_isp_video_fh(buf->queue); + struct isp_video_fh *vfh = vb2_get_drv_priv(buf->vb2_queue); struct isp_buffer *buffer = to_isp_buffer(buf); struct isp_video *video = vfh->video; struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); @@ -456,14 +399,18 @@ static void isp_video_buffer_queue(struct isp_video_buffer *buf) unsigned int empty; unsigned int start; + spin_lock_irqsave(&video->irqlock, flags); + if (unlikely(video->error)) { - buf->state = ISP_BUF_STATE_ERROR; - wake_up(&buf->wait); + vb2_buffer_done(&buffer->vb, VB2_BUF_STATE_ERROR); + spin_unlock_irqrestore(&video->irqlock, flags); return; } empty = list_empty(&video->dmaqueue); - list_add_tail(&buffer->buffer.irqlist, &video->dmaqueue); + list_add_tail(&buffer->irqlist, &video->dmaqueue); + + spin_unlock_irqrestore(&video->irqlock, flags); if (empty) { if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) @@ -487,23 +434,22 @@ static void isp_video_buffer_queue(struct isp_video_buffer *buf) } } -static const struct isp_video_queue_operations isp_video_queue_ops = { - .queue_prepare = &isp_video_queue_prepare, - .buffer_prepare = &isp_video_buffer_prepare, - .buffer_queue = &isp_video_buffer_queue, - .buffer_cleanup = &isp_video_buffer_cleanup, +static const struct vb2_ops isp_video_queue_ops = { + .queue_setup = isp_video_queue_setup, + .buf_prepare = isp_video_buffer_prepare, + .buf_queue = isp_video_buffer_queue, }; /* * omap3isp_video_buffer_next - Complete the current buffer and return the next * @video: ISP video object * - * Remove the current video buffer from the DMA queue and fill its timestamp, - * field count and state fields before waking up its completion handler. + * Remove the current video buffer from the DMA queue and fill its timestamp and + * field count before handing it back to videobuf2. * - * For capture video nodes the buffer state is set to ISP_BUF_STATE_DONE if no - * error has been flagged in the pipeline, or to ISP_BUF_STATE_ERROR otherwise. - * For video output nodes the buffer state is always set to ISP_BUF_STATE_DONE. + * For capture video nodes the buffer state is set to VB2_BUF_STATE_DONE if no + * error has been flagged in the pipeline, or to VB2_BUF_STATE_ERROR otherwise. + * For video output nodes the buffer state is always set to VB2_BUF_STATE_DONE. * * The DMA queue is expected to contain at least one buffer. * @@ -513,26 +459,25 @@ static const struct isp_video_queue_operations isp_video_queue_ops = { struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video) { struct isp_pipeline *pipe = to_isp_pipeline(&video->video.entity); - struct isp_video_queue *queue = video->queue; enum isp_pipeline_state state; - struct isp_video_buffer *buf; + struct isp_buffer *buf; unsigned long flags; struct timespec ts; - spin_lock_irqsave(&queue->irqlock, flags); + spin_lock_irqsave(&video->irqlock, flags); if (WARN_ON(list_empty(&video->dmaqueue))) { - spin_unlock_irqrestore(&queue->irqlock, flags); + spin_unlock_irqrestore(&video->irqlock, flags); return NULL; } - buf = list_first_entry(&video->dmaqueue, struct isp_video_buffer, + buf = list_first_entry(&video->dmaqueue, struct isp_buffer, irqlist); list_del(&buf->irqlist); - spin_unlock_irqrestore(&queue->irqlock, flags); + spin_unlock_irqrestore(&video->irqlock, flags); ktime_get_ts(&ts); - buf->vbuf.timestamp.tv_sec = ts.tv_sec; - buf->vbuf.timestamp.tv_usec = ts.tv_nsec / NSEC_PER_USEC; + buf->vb.v4l2_buf.timestamp.tv_sec = ts.tv_sec; + buf->vb.v4l2_buf.timestamp.tv_usec = ts.tv_nsec / NSEC_PER_USEC; /* Do frame number propagation only if this is the output video node. * Frame number either comes from the CSI receivers or it gets @@ -541,22 +486,27 @@ struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video) * first, so the input number might lag behind by 1 in some cases. */ if (video == pipe->output && !pipe->do_propagation) - buf->vbuf.sequence = atomic_inc_return(&pipe->frame_number); + buf->vb.v4l2_buf.sequence = + atomic_inc_return(&pipe->frame_number); else - buf->vbuf.sequence = atomic_read(&pipe->frame_number); + buf->vb.v4l2_buf.sequence = atomic_read(&pipe->frame_number); /* Report pipeline errors to userspace on the capture device side. */ - if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->error) { - buf->state = ISP_BUF_STATE_ERROR; + if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->error) { + state = VB2_BUF_STATE_ERROR; pipe->error = false; } else { - buf->state = ISP_BUF_STATE_DONE; + state = VB2_BUF_STATE_DONE; } - wake_up(&buf->wait); + vb2_buffer_done(&buf->vb, state); + + spin_lock_irqsave(&video->irqlock, flags); if (list_empty(&video->dmaqueue)) { - if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) + spin_unlock_irqrestore(&video->irqlock, flags); + + if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) state = ISP_PIPELINE_QUEUE_OUTPUT | ISP_PIPELINE_STREAM; else @@ -571,16 +521,19 @@ struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video) return NULL; } - if (queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->input != NULL) { - spin_lock_irqsave(&pipe->lock, flags); + if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE && pipe->input != NULL) { + spin_lock(&pipe->lock); pipe->state &= ~ISP_PIPELINE_STREAM; - spin_unlock_irqrestore(&pipe->lock, flags); + spin_unlock(&pipe->lock); } - buf = list_first_entry(&video->dmaqueue, struct isp_video_buffer, + buf = list_first_entry(&video->dmaqueue, struct isp_buffer, irqlist); - buf->state = ISP_BUF_STATE_ACTIVE; - return to_isp_buffer(buf); + buf->vb.state = VB2_BUF_STATE_ACTIVE; + + spin_unlock_irqrestore(&video->irqlock, flags); + + return buf; } /* @@ -592,25 +545,22 @@ struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video) */ void omap3isp_video_cancel_stream(struct isp_video *video) { - struct isp_video_queue *queue = video->queue; unsigned long flags; - spin_lock_irqsave(&queue->irqlock, flags); + spin_lock_irqsave(&video->irqlock, flags); while (!list_empty(&video->dmaqueue)) { - struct isp_video_buffer *buf; + struct isp_buffer *buf; buf = list_first_entry(&video->dmaqueue, - struct isp_video_buffer, irqlist); + struct isp_buffer, irqlist); list_del(&buf->irqlist); - - buf->state = ISP_BUF_STATE_ERROR; - wake_up(&buf->wait); + vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); } video->error = true; - spin_unlock_irqrestore(&queue->irqlock, flags); + spin_unlock_irqrestore(&video->irqlock, flags); } /* @@ -627,12 +577,15 @@ void omap3isp_video_resume(struct isp_video *video, int continuous) { struct isp_buffer *buf = NULL; - if (continuous && video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) - omap3isp_video_queue_discard_done(video->queue); + if (continuous && video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { + mutex_lock(&video->queue_lock); + vb2_discard_done(video->queue); + mutex_unlock(&video->queue_lock); + } if (!list_empty(&video->dmaqueue)) { buf = list_first_entry(&video->dmaqueue, - struct isp_buffer, buffer.irqlist); + struct isp_buffer, irqlist); video->ops->queue(video, buf); video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_QUEUED; } else { @@ -840,33 +793,56 @@ static int isp_video_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *rb) { struct isp_video_fh *vfh = to_isp_video_fh(fh); + struct isp_video *video = video_drvdata(file); + int ret; - return omap3isp_video_queue_reqbufs(&vfh->queue, rb); + mutex_lock(&video->queue_lock); + ret = vb2_reqbufs(&vfh->queue, rb); + mutex_unlock(&video->queue_lock); + + return ret; } static int isp_video_querybuf(struct file *file, void *fh, struct v4l2_buffer *b) { struct isp_video_fh *vfh = to_isp_video_fh(fh); + struct isp_video *video = video_drvdata(file); + int ret; + + mutex_lock(&video->queue_lock); + ret = vb2_querybuf(&vfh->queue, b); + mutex_unlock(&video->queue_lock); - return omap3isp_video_queue_querybuf(&vfh->queue, b); + return ret; } static int isp_video_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) { struct isp_video_fh *vfh = to_isp_video_fh(fh); + struct isp_video *video = video_drvdata(file); + int ret; - return omap3isp_video_queue_qbuf(&vfh->queue, b); + mutex_lock(&video->queue_lock); + ret = vb2_qbuf(&vfh->queue, b); + mutex_unlock(&video->queue_lock); + + return ret; } static int isp_video_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b) { struct isp_video_fh *vfh = to_isp_video_fh(fh); + struct isp_video *video = video_drvdata(file); + int ret; + + mutex_lock(&video->queue_lock); + ret = vb2_dqbuf(&vfh->queue, b, file->f_flags & O_NONBLOCK); + mutex_unlock(&video->queue_lock); - return omap3isp_video_queue_dqbuf(&vfh->queue, b, - file->f_flags & O_NONBLOCK); + return ret; } static int isp_video_check_external_subdevs(struct isp_video *video, @@ -1006,11 +982,6 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) mutex_lock(&video->stream_lock); - if (video->streaming) { - mutex_unlock(&video->stream_lock); - return -EBUSY; - } - /* Start streaming on the pipeline. No link touching an entity in the * pipeline can be activated or deactivated once streaming is started. */ @@ -1069,7 +1040,9 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) INIT_LIST_HEAD(&video->dmaqueue); atomic_set(&pipe->frame_number, -1); - ret = omap3isp_video_queue_streamon(&vfh->queue); + mutex_lock(&video->queue_lock); + ret = vb2_streamon(&vfh->queue, type); + mutex_unlock(&video->queue_lock); if (ret < 0) goto err_check_format; @@ -1082,19 +1055,19 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) ISP_PIPELINE_STREAM_CONTINUOUS); if (ret < 0) goto err_set_stream; - spin_lock_irqsave(&video->queue->irqlock, flags); + spin_lock_irqsave(&video->irqlock, flags); if (list_empty(&video->dmaqueue)) video->dmaqueue_flags |= ISP_VIDEO_DMAQUEUE_UNDERRUN; - spin_unlock_irqrestore(&video->queue->irqlock, flags); + spin_unlock_irqrestore(&video->irqlock, flags); } - video->streaming = 1; - mutex_unlock(&video->stream_lock); return 0; err_set_stream: - omap3isp_video_queue_streamoff(&vfh->queue); + mutex_lock(&video->queue_lock); + vb2_streamoff(&vfh->queue, type); + mutex_unlock(&video->queue_lock); err_check_format: media_entity_pipeline_stop(&video->video.entity); err_pipeline_start: @@ -1130,9 +1103,9 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) mutex_lock(&video->stream_lock); /* Make sure we're not streaming yet. */ - mutex_lock(&vfh->queue.lock); - streaming = vfh->queue.streaming; - mutex_unlock(&vfh->queue.lock); + mutex_lock(&video->queue_lock); + streaming = vb2_is_streaming(&vfh->queue); + mutex_unlock(&video->queue_lock); if (!streaming) goto done; @@ -1151,9 +1124,12 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) /* Stop the stream. */ omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_STOPPED); - omap3isp_video_queue_streamoff(&vfh->queue); + omap3isp_video_cancel_stream(video); + + mutex_lock(&video->queue_lock); + vb2_streamoff(&vfh->queue, type); + mutex_unlock(&video->queue_lock); video->queue = NULL; - video->streaming = 0; video->error = false; if (video->isp->pdata->set_constraints) @@ -1223,6 +1199,7 @@ static int isp_video_open(struct file *file) { struct isp_video *video = video_drvdata(file); struct isp_video_fh *handle; + struct vb2_queue *queue; int ret = 0; handle = kzalloc(sizeof(*handle), GFP_KERNEL); @@ -1244,9 +1221,20 @@ static int isp_video_open(struct file *file) goto done; } - omap3isp_video_queue_init(&handle->queue, video->type, - &isp_video_queue_ops, video->isp->dev, - sizeof(struct isp_buffer)); + queue = &handle->queue; + queue->type = video->type; + queue->io_modes = VB2_MMAP | VB2_USERPTR; + queue->drv_priv = handle; + queue->ops = &isp_video_queue_ops; + queue->mem_ops = &vb2_dma_contig_memops; + queue->buf_struct_size = sizeof(struct isp_buffer); + queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + + ret = vb2_queue_init(&handle->queue); + if (ret < 0) { + omap3isp_put(video->isp); + goto done; + } memset(&handle->format, 0, sizeof(handle->format)); handle->format.type = video->type; @@ -1273,9 +1261,9 @@ static int isp_video_release(struct file *file) /* Disable streaming and free the buffers queue resources. */ isp_video_streamoff(file, vfh, video->type); - mutex_lock(&handle->queue.lock); - omap3isp_video_queue_cleanup(&handle->queue); - mutex_unlock(&handle->queue.lock); + mutex_lock(&video->queue_lock); + vb2_queue_release(&handle->queue); + mutex_unlock(&video->queue_lock); omap3isp_pipeline_pm_use(&video->video.entity, 0); @@ -1292,16 +1280,27 @@ static int isp_video_release(struct file *file) static unsigned int isp_video_poll(struct file *file, poll_table *wait) { struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); - struct isp_video_queue *queue = &vfh->queue; + struct isp_video *video = video_drvdata(file); + int ret; - return omap3isp_video_queue_poll(queue, file, wait); + mutex_lock(&video->queue_lock); + ret = vb2_poll(&vfh->queue, file, wait); + mutex_unlock(&video->queue_lock); + + return ret; } static int isp_video_mmap(struct file *file, struct vm_area_struct *vma) { struct isp_video_fh *vfh = to_isp_video_fh(file->private_data); + struct isp_video *video = video_drvdata(file); + int ret; + + mutex_lock(&video->queue_lock); + ret = vb2_mmap(&vfh->queue, vma); + mutex_unlock(&video->queue_lock); - return omap3isp_video_queue_mmap(&vfh->queue, vma); + return ret; } static struct v4l2_file_operations isp_video_fops = { @@ -1342,15 +1341,23 @@ int omap3isp_video_init(struct isp_video *video, const char *name) return -EINVAL; } + video->alloc_ctx = vb2_dma_contig_init_ctx(video->isp->dev); + if (IS_ERR(video->alloc_ctx)) + return PTR_ERR(video->alloc_ctx); + ret = media_entity_init(&video->video.entity, 1, &video->pad, 0); - if (ret < 0) + if (ret < 0) { + vb2_dma_contig_cleanup_ctx(video->alloc_ctx); return ret; + } mutex_init(&video->mutex); atomic_set(&video->active, 0); spin_lock_init(&video->pipe.lock); mutex_init(&video->stream_lock); + mutex_init(&video->queue_lock); + spin_lock_init(&video->irqlock); /* Initialize the video device. */ if (video->ops == NULL) @@ -1371,7 +1378,9 @@ int omap3isp_video_init(struct isp_video *video, const char *name) void omap3isp_video_cleanup(struct isp_video *video) { + vb2_dma_contig_cleanup_ctx(video->alloc_ctx); media_entity_cleanup(&video->video.entity); + mutex_destroy(&video->queue_lock); mutex_destroy(&video->stream_lock); mutex_destroy(&video->mutex); } diff --git a/drivers/media/platform/omap3isp/ispvideo.h b/drivers/media/platform/omap3isp/ispvideo.h index 4e194076cc60..7d2e82122ecd 100644 --- a/drivers/media/platform/omap3isp/ispvideo.h +++ b/drivers/media/platform/omap3isp/ispvideo.h @@ -30,8 +30,7 @@ #include <media/media-entity.h> #include <media/v4l2-dev.h> #include <media/v4l2-fh.h> - -#include "ispqueue.h" +#include <media/videobuf2-core.h> #define ISP_VIDEO_DRIVER_NAME "ispvideo" #define ISP_VIDEO_DRIVER_VERSION "0.0.2" @@ -124,17 +123,19 @@ static inline int isp_pipeline_ready(struct isp_pipeline *pipe) ISP_PIPELINE_IDLE_OUTPUT); } -/* - * struct isp_buffer - ISP buffer - * @buffer: ISP video buffer - * @isp_addr: MMU mapped address (a.k.a. device address) of the buffer. +/** + * struct isp_buffer - ISP video buffer + * @vb: videobuf2 buffer + * @irqlist: List head for insertion into IRQ queue + * @dma: DMA address */ struct isp_buffer { - struct isp_video_buffer buffer; - dma_addr_t isp_addr; + struct vb2_buffer vb; + struct list_head irqlist; + dma_addr_t dma; }; -#define to_isp_buffer(buf) container_of(buf, struct isp_buffer, buffer) +#define to_isp_buffer(buf) container_of(buf, struct isp_buffer, vb) enum isp_video_dmaqueue_flags { /* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */ @@ -172,16 +173,16 @@ struct isp_video { unsigned int bpl_value; /* bytes per line value */ unsigned int bpl_padding; /* padding at end of line */ - /* Entity video node streaming */ - unsigned int streaming:1; - /* Pipeline state */ struct isp_pipeline pipe; struct mutex stream_lock; /* pipeline and stream states */ bool error; /* Video buffers queue */ - struct isp_video_queue *queue; + void *alloc_ctx; + struct vb2_queue *queue; + struct mutex queue_lock; /* protects the queue */ + spinlock_t irqlock; /* protects dmaqueue */ struct list_head dmaqueue; enum isp_video_dmaqueue_flags dmaqueue_flags; @@ -193,7 +194,7 @@ struct isp_video { struct isp_video_fh { struct v4l2_fh vfh; struct isp_video *video; - struct isp_video_queue queue; + struct vb2_queue queue; struct v4l2_format format; struct v4l2_fract timeperframe; }; diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index 349e659d75fb..7c4489c42365 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1200,6 +1200,30 @@ void vb2_buffer_done(struct vb2_buffer *vb, enum vb2_buffer_state state) EXPORT_SYMBOL_GPL(vb2_buffer_done); /** + * vb2_discard_done() - discard all buffers marked as DONE + * @q: videobuf2 queue + * + * This function is intended to be used with suspend/resume operations. It + * discards all 'done' buffers as they would be too old to be requested after + * resume. + * + * Drivers must stop the hardware and synchronize with interrupt handlers and/or + * delayed works before calling this function to make sure no buffer will be + * touched by the driver and/or hardware. + */ +void vb2_discard_done(struct vb2_queue *q) +{ + struct vb2_buffer *vb; + unsigned long flags; + + spin_lock_irqsave(&q->done_lock, flags); + list_for_each_entry(vb, &q->done_list, done_entry) + vb->state = VB2_BUF_STATE_ERROR; + spin_unlock_irqrestore(&q->done_lock, flags); +} +EXPORT_SYMBOL_GPL(vb2_discard_done); + +/** * __fill_vb2_buffer() - fill a vb2_buffer with information provided in a * v4l2_buffer by the userspace. The caller has already verified that struct * v4l2_buffer has a valid number of planes. diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index ded31ea6bd39..cbf455d66f73 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -396,7 +396,7 @@ static void iss_video_buf_queue(struct vb2_buffer *vb) } } -static struct vb2_ops iss_video_vb2ops = { +static const struct vb2_ops iss_video_vb2ops = { .queue_setup = iss_video_queue_setup, .buf_prepare = iss_video_buf_prepare, .buf_queue = iss_video_buf_queue, |