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 26struct usbhs_fifo { 27 char *name; 28 u32 port; /* xFIFO */ 29 u32 sel; /* xFIFOSEL */ 30 u32 ctr; /* xFIFOCTR */ 31 32 struct usbhs_pipe *pipe; 33 34 struct dma_chan *tx_chan; 35 struct dma_chan *rx_chan; 36 37 struct sh_dmae_slave tx_slave; 38 struct sh_dmae_slave rx_slave; 39}; 40 41#define USBHS_MAX_NUM_DFIFO 4 42struct usbhs_fifo_info { 43 struct usbhs_fifo cfifo; 44 struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO]; 45}; 46#define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n])) 47#define usbhs_for_each_dfifo(priv, dfifo, i) \ 48 for ((i) = 0; \ 49 ((i) < USBHS_MAX_NUM_DFIFO) && \ 50 ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \ 51 (i)++) 52 53struct usbhs_pkt_handle; 54struct usbhs_pkt { 55 struct list_head node; 56 struct usbhs_pipe *pipe; 57 struct usbhs_pkt_handle *handler; 58 void (*done)(struct usbhs_priv *priv, 59 struct usbhs_pkt *pkt); 60 struct work_struct work; 61 dma_addr_t dma; 62 dma_cookie_t cookie; 63 void *buf; 64 int length; 65 int trans; 66 int actual; 67 int zero; 68 int sequence; 69}; 70 71struct usbhs_pkt_handle { 72 int (*prepare)(struct usbhs_pkt *pkt, int *is_done); 73 int (*try_run)(struct usbhs_pkt *pkt, int *is_done); 74 int (*dma_done)(struct usbhs_pkt *pkt, int *is_done); 75}; 76 77/* 78 * fifo 79 */ 80int usbhs_fifo_probe(struct usbhs_priv *priv); 81void usbhs_fifo_remove(struct usbhs_priv *priv); 82void usbhs_fifo_init(struct usbhs_priv *priv); 83void usbhs_fifo_quit(struct usbhs_priv *priv); 84void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe); 85 86/* 87 * packet info 88 */ 89extern struct usbhs_pkt_handle usbhs_fifo_pio_push_handler; 90extern struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler; 91extern struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler; 92 93extern struct usbhs_pkt_handle usbhs_fifo_dma_push_handler; 94extern struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler; 95 96extern struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler; 97extern struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler; 98 99extern struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler; 100extern struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler; 101 102void usbhs_pkt_init(struct usbhs_pkt *pkt); 103void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt, 104 void (*done)(struct usbhs_priv *priv, 105 struct usbhs_pkt *pkt), 106 void *buf, int len, int zero, int sequence); 107struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt); 108void usbhs_pkt_start(struct usbhs_pipe *pipe); 109 110#endif /* RENESAS_USB_FIFO_H */ 111