diff options
Diffstat (limited to 'drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.h')
| -rw-r--r-- | drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.h | 34 |
1 files changed, 18 insertions, 16 deletions
diff --git a/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.h b/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.h index ef913b7496e6..4c8cc866b826 100644 --- a/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.h +++ b/drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.h @@ -14,11 +14,9 @@ #include <linux/pci.h> #include <linux/interrupt.h> #include <linux/workqueue.h> -#include <linux/aio.h> #include <linux/bitops.h> #include "../kpc.h" - struct kp2000_device; struct kpc_dma_device { struct list_head list; @@ -27,23 +25,23 @@ struct kpc_dma_device { struct device *kpc_dma_dev; struct kobject kobj; char name[16]; - + int dir; // DMA_FROM_DEVICE || DMA_TO_DEVICE struct mutex sem; unsigned int irq; struct work_struct irq_work; - + atomic_t open_count; - + size_t accumulated_bytes; u32 accumulated_flags; - + // Descriptor "Pool" housekeeping u32 desc_pool_cnt; struct dma_pool *desc_pool; struct kpc_dma_descriptor *desc_pool_first; struct kpc_dma_descriptor *desc_pool_last; - + struct kpc_dma_descriptor *desc_next; struct kpc_dma_descriptor *desc_completed; }; @@ -56,9 +54,9 @@ struct dev_private_data { u64 user_sts; }; -struct kpc_dma_device * kpc_dma_lookup_device(int minor); +struct kpc_dma_device *kpc_dma_lookup_device(int minor); -extern struct file_operations kpc_dma_fops; +extern const struct file_operations kpc_dma_fops; #define ENG_CAP_PRESENT 0x00000001 #define ENG_CAP_DIRECTION 0x00000002 @@ -88,9 +86,8 @@ struct aio_cb_data { struct kpc_dma_device *ldev; struct completion *cpl; unsigned char flags; - struct kiocb *kcb; size_t len; - + unsigned int page_count; struct page **user_pages; struct sg_table sgt; @@ -119,10 +116,10 @@ struct kpc_dma_descriptor { volatile u32 DescSystemAddrLS; volatile u32 DescSystemAddrMS; volatile u32 DescNextDescPtr; - + dma_addr_t MyDMAAddr; struct kpc_dma_descriptor *Next; - + struct aio_cb_data *acd; } __attribute__((packed)); // DescControlFlags: @@ -157,35 +154,41 @@ void WriteEngineControl(struct kpc_dma_device *eng, u32 value) { writel(value, eng->eng_regs + 1); } + static inline u32 GetEngineControl(struct kpc_dma_device *eng) { return readl(eng->eng_regs + 1); } + static inline void SetClearEngineControl(struct kpc_dma_device *eng, u32 set_bits, u32 clear_bits) { u32 val = GetEngineControl(eng); + val |= set_bits; val &= ~clear_bits; WriteEngineControl(eng, val); } static inline -void SetEngineNextPtr(struct kpc_dma_device *eng, struct kpc_dma_descriptor * desc) +void SetEngineNextPtr(struct kpc_dma_device *eng, struct kpc_dma_descriptor *desc) { writel(desc->MyDMAAddr, eng->eng_regs + 2); } + static inline -void SetEngineSWPtr(struct kpc_dma_device *eng, struct kpc_dma_descriptor * desc) +void SetEngineSWPtr(struct kpc_dma_device *eng, struct kpc_dma_descriptor *desc) { writel(desc->MyDMAAddr, eng->eng_regs + 3); } + static inline void ClearEngineCompletePtr(struct kpc_dma_device *eng) { writel(0, eng->eng_regs + 4); } + static inline u32 GetEngineCompletePtr(struct kpc_dma_device *eng) { @@ -206,7 +209,6 @@ void unlock_engine(struct kpc_dma_device *eng) mutex_unlock(&eng->sem); } - /// Shared Functions void start_dma_engine(struct kpc_dma_device *eng); int setup_dma_engine(struct kpc_dma_device *eng, u32 desc_cnt); |