1 /* 2 * Renesas USB driver 3 * 4 * Copyright (C) 2011 Renesas Solutions Corp. 5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 6 * 7 * This program is distributed in the hope that it will be useful, 8 * but WITHOUT ANY WARRANTY; without even the implied warranty of 9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 10 * GNU General Public License for more details. 11 * 12 * You should have received a copy of the GNU General Public License 13 * along with this program; if not, write to the Free Software 14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 15 * 16 */ 17 #ifndef RENESAS_USB_FIFO_H 18 #define RENESAS_USB_FIFO_H 19 20 #include <linux/interrupt.h> 21 #include <linux/sh_dma.h> 22 #include <linux/workqueue.h> 23 #include <asm/dma.h> 24 #include "pipe.h" 25 26 #define DMA_ADDR_INVALID (~(dma_addr_t)0) 27 28 struct usbhs_fifo { 29 char *name; 30 u32 port; /* xFIFO */ 31 u32 sel; /* xFIFOSEL */ 32 u32 ctr; /* xFIFOCTR */ 33 34 struct usbhs_pipe *pipe; 35 36 struct dma_chan *tx_chan; 37 struct dma_chan *rx_chan; 38 39 struct sh_dmae_slave tx_slave; 40 struct sh_dmae_slave rx_slave; 41 }; 42 43 struct usbhs_fifo_info { 44 struct usbhs_fifo cfifo; 45 struct usbhs_fifo d0fifo; 46 struct usbhs_fifo d1fifo; 47 }; 48 49 struct usbhs_pkt_handle; 50 struct usbhs_pkt { 51 struct list_head node; 52 struct usbhs_pipe *pipe; 53 struct usbhs_pkt_handle *handler; 54 void (*done)(struct usbhs_priv *priv, 55 struct usbhs_pkt *pkt); 56 struct work_struct work; 57 dma_addr_t dma; 58 void *buf; 59 int length; 60 int trans; 61 int actual; 62 int zero; 63 int sequence; 64 }; 65 66 struct usbhs_pkt_handle { 67 int (*prepare)(struct usbhs_pkt *pkt, int *is_done); 68 int (*try_run)(struct usbhs_pkt *pkt, int *is_done); 69 int (*dma_done)(struct usbhs_pkt *pkt, int *is_done); 70 }; 71 72 /* 73 * fifo 74 */ 75 int usbhs_fifo_probe(struct usbhs_priv *priv); 76 void usbhs_fifo_remove(struct usbhs_priv *priv); 77 void usbhs_fifo_init(struct usbhs_priv *priv); 78 void usbhs_fifo_quit(struct usbhs_priv *priv); 79 80 /* 81 * packet info 82 */ 83 extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler; 84 extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler; 85 extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler; 86 87 extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler; 88 extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler; 89 90 extern struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler; 91 extern struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler; 92 93 extern struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler; 94 extern struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler; 95 96 void usbhs_pkt_init(struct usbhs_pkt *pkt); 97 void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, 98 void (*done)(struct usbhs_priv *priv, 99 struct usbhs_pkt *pkt), 100 void *buf, int len, int zero, int sequence); 101 struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt); 102 void usbhs_pkt_start(struct usbhs_pipe *pipe); 103 104 #endif /* RENESAS_USB_FIFO_H */ 105