diff options
Diffstat (limited to 'kernel/drivers/usb/renesas_usbhs/fifo.h')
| -rw-r--r-- | kernel/drivers/usb/renesas_usbhs/fifo.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/kernel/drivers/usb/renesas_usbhs/fifo.h b/kernel/drivers/usb/renesas_usbhs/fifo.h new file mode 100644 index 000000000..04d3f8aba --- /dev/null +++ b/kernel/drivers/usb/renesas_usbhs/fifo.h @@ -0,0 +1,109 @@ +/* + * Renesas USB driver + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * 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 RENESAS_USB_FIFO_H +#define RENESAS_USB_FIFO_H + +#include <linux/interrupt.h> +#include <linux/sh_dma.h> +#include <linux/workqueue.h> +#include <asm/dma.h> +#include "pipe.h" + +struct usbhs_fifo { + char *name; + u32 port; /* xFIFO */ + u32 sel; /* xFIFOSEL */ + u32 ctr; /* xFIFOCTR */ + + struct usbhs_pipe *pipe; + + struct dma_chan *tx_chan; + struct dma_chan *rx_chan; + + struct sh_dmae_slave tx_slave; + struct sh_dmae_slave rx_slave; +}; + +#define USBHS_MAX_NUM_DFIFO 4 +struct usbhs_fifo_info { + struct usbhs_fifo cfifo; + struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO]; +}; +#define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n])) +#define usbhs_for_each_dfifo(priv, dfifo, i) \ + for ((i) = 0, dfifo = usbhsf_get_dnfifo(priv, (i)); \ + ((i) < USBHS_MAX_NUM_DFIFO); \ + (i)++, dfifo = usbhsf_get_dnfifo(priv, (i))) + +struct usbhs_pkt_handle; +struct usbhs_pkt { + struct list_head node; + struct usbhs_pipe *pipe; + struct usbhs_pkt_handle *handler; + void (*done)(struct usbhs_priv *priv, + struct usbhs_pkt *pkt); + struct work_struct work; + dma_addr_t dma; + dma_cookie_t cookie; + void *buf; + int length; + int trans; + int actual; + int zero; + int sequence; +}; + +struct usbhs_pkt_handle { + int (*prepare)(struct usbhs_pkt *pkt, int *is_done); + int (*try_run)(struct usbhs_pkt *pkt, int *is_done); + int (*dma_done)(struct usbhs_pkt *pkt, int *is_done); +}; + +/* + * fifo + */ +int usbhs_fifo_probe(struct usbhs_priv *priv); +void usbhs_fifo_remove(struct usbhs_priv *priv); +void usbhs_fifo_init(struct usbhs_priv *priv); +void usbhs_fifo_quit(struct usbhs_priv *priv); +void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe); + +/* + * packet info + */ +extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler; +extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler; +extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler; + +extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler; +extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler; + +extern struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler; +extern struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler; + +extern struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler; +extern struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler; + +void usbhs_pkt_init(struct usbhs_pkt *pkt); +void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, + void (*done)(struct usbhs_priv *priv, + struct usbhs_pkt *pkt), + void *buf, int len, int zero, int sequence); +struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt); +void usbhs_pkt_start(struct usbhs_pipe *pipe); + +#endif /* RENESAS_USB_FIFO_H */ |