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Diffstat (limited to 'drivers/dma/qcom/hidma.h')
-rw-r--r--drivers/dma/qcom/hidma.h40
1 files changed, 19 insertions, 21 deletions
diff --git a/drivers/dma/qcom/hidma.h b/drivers/dma/qcom/hidma.h
index 231e306f6d87..db413a5efc4e 100644
--- a/drivers/dma/qcom/hidma.h
+++ b/drivers/dma/qcom/hidma.h
@@ -1,7 +1,7 @@
/*
* Qualcomm Technologies HIDMA data structures
*
- * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@@ -20,32 +20,29 @@
#include <linux/interrupt.h>
#include <linux/dmaengine.h>
-#define TRE_SIZE 32 /* each TRE is 32 bytes */
-#define TRE_CFG_IDX 0
-#define TRE_LEN_IDX 1
-#define TRE_SRC_LOW_IDX 2
-#define TRE_SRC_HI_IDX 3
-#define TRE_DEST_LOW_IDX 4
-#define TRE_DEST_HI_IDX 5
-
-struct hidma_tx_status {
- u8 err_info; /* error record in this transfer */
- u8 err_code; /* completion code */
-};
+#define HIDMA_TRE_SIZE 32 /* each TRE is 32 bytes */
+#define HIDMA_TRE_CFG_IDX 0
+#define HIDMA_TRE_LEN_IDX 1
+#define HIDMA_TRE_SRC_LOW_IDX 2
+#define HIDMA_TRE_SRC_HI_IDX 3
+#define HIDMA_TRE_DEST_LOW_IDX 4
+#define HIDMA_TRE_DEST_HI_IDX 5
struct hidma_tre {
atomic_t allocated; /* if this channel is allocated */
bool queued; /* flag whether this is pending */
u16 status; /* status */
- u32 chidx; /* index of the tre */
+ u32 idx; /* index of the tre */
u32 dma_sig; /* signature of the tre */
const char *dev_name; /* name of the device */
void (*callback)(void *data); /* requester callback */
void *data; /* Data associated with this channel*/
struct hidma_lldev *lldev; /* lldma device pointer */
- u32 tre_local[TRE_SIZE / sizeof(u32) + 1]; /* TRE local copy */
+ u32 tre_local[HIDMA_TRE_SIZE / sizeof(u32) + 1]; /* TRE local copy */
u32 tre_index; /* the offset where this was written*/
u32 int_flags; /* interrupt flags */
+ u8 err_info; /* error record in this transfer */
+ u8 err_code; /* completion code */
};
struct hidma_lldev {
@@ -61,22 +58,21 @@ struct hidma_lldev {
void __iomem *evca; /* Event Channel address */
struct hidma_tre
**pending_tre_list; /* Pointers to pending TREs */
- struct hidma_tx_status
- *tx_status_list; /* Pointers to pending TREs status*/
s32 pending_tre_count; /* Number of TREs pending */
void *tre_ring; /* TRE ring */
- dma_addr_t tre_ring_handle; /* TRE ring to be shared with HW */
+ dma_addr_t tre_dma; /* TRE ring to be shared with HW */
u32 tre_ring_size; /* Byte size of the ring */
u32 tre_processed_off; /* last processed TRE */
void *evre_ring; /* EVRE ring */
- dma_addr_t evre_ring_handle; /* EVRE ring to be shared with HW */
+ dma_addr_t evre_dma; /* EVRE ring to be shared with HW */
u32 evre_ring_size; /* Byte size of the ring */
u32 evre_processed_off; /* last processed EVRE */
u32 tre_write_offset; /* TRE write location */
struct tasklet_struct task; /* task delivering notifications */
+ struct tasklet_struct rst_task; /* task to reset HW */
DECLARE_KFIFO_PTR(handoff_fifo,
struct hidma_tre *); /* pending TREs FIFO */
};
@@ -145,8 +141,8 @@ enum dma_status hidma_ll_status(struct hidma_lldev *llhndl, u32 tre_ch);
bool hidma_ll_isenabled(struct hidma_lldev *llhndl);
void hidma_ll_queue_request(struct hidma_lldev *llhndl, u32 tre_ch);
void hidma_ll_start(struct hidma_lldev *llhndl);
-int hidma_ll_pause(struct hidma_lldev *llhndl);
-int hidma_ll_resume(struct hidma_lldev *llhndl);
+int hidma_ll_disable(struct hidma_lldev *lldev);
+int hidma_ll_enable(struct hidma_lldev *llhndl);
void hidma_ll_set_transfer_params(struct hidma_lldev *llhndl, u32 tre_ch,
dma_addr_t src, dma_addr_t dest, u32 len, u32 flags);
int hidma_ll_setup(struct hidma_lldev *lldev);
@@ -157,4 +153,6 @@ int hidma_ll_uninit(struct hidma_lldev *llhndl);
irqreturn_t hidma_ll_inthandler(int irq, void *arg);
void hidma_cleanup_pending_tre(struct hidma_lldev *llhndl, u8 err_info,
u8 err_code);
+int hidma_debug_init(struct hidma_dev *dmadev);
+void hidma_debug_uninit(struct hidma_dev *dmadev);
#endif