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authorJohn Bonesio <bones@secretlab.ca>2009-09-29 10:43:42 +0000
committerGrant Likely <grant.likely@secretlab.ca>2009-11-04 16:42:47 -0700
commit3c9059d79f5eea6b8b75ddac97693127c3c41db4 (patch)
tree7134da85c066a811bc7d1c7c21508d834dbadd67 /arch/powerpc/include/asm/mpc52xx.h
parent4f59ecfa9b87da09bdc346f2c443e25fa2c0674c (diff)
powerpc/5200: add LocalPlus bus FIFO device driver
This is a driver for the FIFO device on the LocalPlus bus on an mpc5200 system. The driver supports programmed I/O through the FIFO as well as setting up DMA via the BestComm engine through the FIFO. Signed-off-by: John Bonesio <bones@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'arch/powerpc/include/asm/mpc52xx.h')
-rw-r--r--arch/powerpc/include/asm/mpc52xx.h39
1 files changed, 39 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mpc52xx.h b/arch/powerpc/include/asm/mpc52xx.h
index 671685011a23..707ab7590cfb 100644
--- a/arch/powerpc/include/asm/mpc52xx.h
+++ b/arch/powerpc/include/asm/mpc52xx.h
@@ -283,6 +283,45 @@ extern int mpc52xx_gpt_start_timer(struct mpc52xx_gpt_priv *gpt, int period,
int continuous);
extern void mpc52xx_gpt_stop_timer(struct mpc52xx_gpt_priv *gpt);
+/* mpc52xx_lpbfifo.c */
+#define MPC52XX_LPBFIFO_FLAG_READ (0)
+#define MPC52XX_LPBFIFO_FLAG_WRITE (1<<0)
+#define MPC52XX_LPBFIFO_FLAG_NO_INCREMENT (1<<1)
+#define MPC52XX_LPBFIFO_FLAG_NO_DMA (1<<2)
+#define MPC52XX_LPBFIFO_FLAG_POLL_DMA (1<<3)
+
+struct mpc52xx_lpbfifo_request {
+ struct list_head list;
+
+ /* localplus bus address */
+ unsigned int cs;
+ size_t offset;
+
+ /* Memory address */
+ void *data;
+ phys_addr_t data_phys;
+
+ /* Details of transfer */
+ size_t size;
+ size_t pos; /* current position of transfer */
+ int flags;
+
+ /* What to do when finished */
+ void (*callback)(struct mpc52xx_lpbfifo_request *);
+
+ void *priv; /* Driver private data */
+
+ /* statistics */
+ int irq_count;
+ int irq_ticks;
+ u8 last_byte;
+ int buffer_not_done_cnt;
+};
+
+extern int mpc52xx_lpbfifo_submit(struct mpc52xx_lpbfifo_request *req);
+extern void mpc52xx_lpbfifo_abort(struct mpc52xx_lpbfifo_request *req);
+extern void mpc52xx_lpbfifo_poll(void);
+
/* mpc52xx_pic.c */
extern void mpc52xx_init_irq(void);
extern unsigned int mpc52xx_get_irq(void);