drivers/usb/host/r8a66597.h

   1 /*
   2  * R8A66597 HCD (Host Controller Driver)
   3  *
   4  * Copyright (C) 2006-2007 Renesas Solutions Corp.
   5  * Portions Copyright (C) 2004 Psion Teklogix (for NetBook PRO)
   6  * Portions Copyright (C) 2004-2005 David Brownell
   7  * Portions Copyright (C) 1999 Roman Weissgaerber
   8  *
   9  * Author : Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; version 2 of the License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  23  *
  24  */
  25
  26 #ifndef __R8A66597_H__
  27 #define __R8A66597_H__
  28
  29 #ifdef CONFIG_HAVE_CLK
  30 #include <linux/clk.h>
  31 #endif
  32
  33 #include <linux/usb/r8a66597.h>
  34
  35 #define R8A66597_MAX_NUM_PIPE           10
  36 #define R8A66597_BUF_BSIZE              8
  37 #define R8A66597_MAX_DEVICE             10
  38 #define R8A66597_MAX_ROOT_HUB           2
  39 #define R8A66597_MAX_SAMPLING           5
  40 #define R8A66597_RH_POLL_TIME           10
  41 #define R8A66597_MAX_DMA_CHANNEL        2
  42 #define R8A66597_PIPE_NO_DMA            R8A66597_MAX_DMA_CHANNEL
  43 #define check_bulk_or_isoc(pipenum)     ((pipenum >= 1 && pipenum <= 5))
  44 #define check_interrupt(pipenum)        ((pipenum >= 6 && pipenum <= 9))
  45 #define make_devsel(addr)               (addr << 12)
  46
  47 struct r8a66597_pipe_info {
  48         unsigned long timer_interval;
  49         u16 pipenum;
  50         u16 address;    /* R8A66597 HCD usb address */
  51         u16 epnum;
  52         u16 maxpacket;
  53         u16 type;
  54         u16 bufnum;
  55         u16 buf_bsize;
  56         u16 interval;
  57         u16 dir_in;
  58 };
  59
  60 struct r8a66597_pipe {
  61         struct r8a66597_pipe_info info;
  62
  63         unsigned long fifoaddr;
  64         unsigned long fifosel;
  65         unsigned long fifoctr;
  66         unsigned long pipectr;
  67         unsigned long pipetre;
  68         unsigned long pipetrn;
  69 };
  70
  71 struct r8a66597_td {
  72         struct r8a66597_pipe *pipe;
  73         struct urb *urb;
  74         struct list_head queue;
  75
  76         u16 type;
  77         u16 pipenum;
  78         int iso_cnt;
  79
  80         u16 address;            /* R8A66597's USB address */
  81         u16 maxpacket;
  82
  83         unsigned zero_packet:1;
  84         unsigned short_packet:1;
  85         unsigned set_address:1;
  86 };
  87
  88 struct r8a66597_device {
  89         u16     address;        /* R8A66597's USB address */
  90         u16     hub_port;
  91         u16     root_port;
  92
  93         unsigned short ep_in_toggle;
  94         unsigned short ep_out_toggle;
  95         unsigned char pipe_cnt[R8A66597_MAX_NUM_PIPE];
  96         unsigned char dma_map;
  97
  98         enum usb_device_state state;
  99
 100         struct usb_device *udev;
 101         int usb_address;
 102         struct list_head device_list;
 103 };
 104
 105 struct r8a66597_root_hub {
 106         u32 port;
 107         u16 old_syssts;
 108         int scount;
 109
 110         struct r8a66597_device  *dev;
 111 };
 112
 113 struct r8a66597 {
 114         spinlock_t lock;
 115         void __iomem *reg;
 116 #ifdef CONFIG_HAVE_CLK
 117         struct clk *clk;
 118 #endif
 119         struct r8a66597_platdata        *pdata;
 120         struct r8a66597_device          device0;
 121         struct r8a66597_root_hub        root_hub[R8A66597_MAX_ROOT_HUB];
 122         struct list_head                pipe_queue[R8A66597_MAX_NUM_PIPE];
 123
 124         struct timer_list rh_timer;
 125         struct timer_list td_timer[R8A66597_MAX_NUM_PIPE];
 126         struct timer_list interval_timer[R8A66597_MAX_NUM_PIPE];
 127
 128         unsigned short address_map;
 129         unsigned short timeout_map;
 130         unsigned short interval_map;
 131         unsigned char pipe_cnt[R8A66597_MAX_NUM_PIPE];
 132         unsigned char dma_map;
 133         unsigned int max_root_hub;
 134
 135         struct list_head child_device;
 136         unsigned long child_connect_map[4];
 137
 138         unsigned bus_suspended:1;
 139         unsigned irq_sense_low:1;
 140 };
 141
 142 static inline struct r8a66597 *hcd_to_r8a66597(struct usb_hcd *hcd)
 143 {
 144         return (struct r8a66597 *)(hcd->hcd_priv);
 145 }
 146
 147 static inline struct usb_hcd *r8a66597_to_hcd(struct r8a66597 *r8a66597)
 148 {
 149         return container_of((void *)r8a66597, struct usb_hcd, hcd_priv);
 150 }
 151
 152 static inline struct r8a66597_td *r8a66597_get_td(struct r8a66597 *r8a66597,
 153                                                   u16 pipenum)
 154 {
 155         if (unlikely(list_empty(&r8a66597->pipe_queue[pipenum])))
 156                 return NULL;
 157
 158         return list_entry(r8a66597->pipe_queue[pipenum].next,
 159                           struct r8a66597_td, queue);
 160 }
 161
 162 static inline struct urb *r8a66597_get_urb(struct r8a66597 *r8a66597,
 163                                            u16 pipenum)
 164 {
 165         struct r8a66597_td *td;
 166
 167         td = r8a66597_get_td(r8a66597, pipenum);
 168         return (td ? td->urb : NULL);
 169 }
 170
 171 static inline u16 r8a66597_read(struct r8a66597 *r8a66597, unsigned long offset)
 172 {
 173         return ioread16(r8a66597->reg + offset);
 174 }
 175
 176 static inline void r8a66597_read_fifo(struct r8a66597 *r8a66597,
 177                                       unsigned long offset, u16 *buf,
 178                                       int len)
 179 {
 180         void __iomem *fifoaddr = r8a66597->reg + offset;
 181         unsigned long count;
 182
 183         if (r8a66597->pdata->on_chip) {
 184                 count = len / 4;
 185                 ioread32_rep(fifoaddr, buf, count);
 186
 187                 if (len & 0x00000003) {
 188                         unsigned long tmp = ioread32(fifoaddr);
 189                         memcpy((unsigned char *)buf + count * 4, &tmp,
 190                                len & 0x03);
 191                 }
 192         } else {
 193                 len = (len + 1) / 2;
 194                 ioread16_rep(fifoaddr, buf, len);
 195         }
 196 }
 197
 198 static inline void r8a66597_write(struct r8a66597 *r8a66597, u16 val,
 199                                   unsigned long offset)
 200 {
 201         iowrite16(val, r8a66597->reg + offset);
 202 }
 203
 204 static inline void r8a66597_mdfy(struct r8a66597 *r8a66597,
 205                                  u16 val, u16 pat, unsigned long offset)
 206 {
 207         u16 tmp;
 208         tmp = r8a66597_read(r8a66597, offset);
 209         tmp = tmp & (~pat);
 210         tmp = tmp | val;
 211         r8a66597_write(r8a66597, tmp, offset);
 212 }
 213
 214 #define r8a66597_bclr(r8a66597, val, offset)    \
 215                         r8a66597_mdfy(r8a66597, 0, val, offset)
 216 #define r8a66597_bset(r8a66597, val, offset)    \
 217                         r8a66597_mdfy(r8a66597, val, 0, offset)
 218
 219 static inline void r8a66597_write_fifo(struct r8a66597 *r8a66597,
 220                                        struct r8a66597_pipe *pipe, u16 *buf,
 221                                        int len)
 222 {
 223         void __iomem *fifoaddr = r8a66597->reg + pipe->fifoaddr;
 224         unsigned long count;
 225         unsigned char *pb;
 226         int i;
 227
 228         if (r8a66597->pdata->on_chip) {
 229                 count = len / 4;
 230                 iowrite32_rep(fifoaddr, buf, count);
 231
 232                 if (len & 0x00000003) {
 233                         pb = (unsigned char *)buf + count * 4;
 234                         for (i = 0; i < (len & 0x00000003); i++) {
 235                                 if (r8a66597_read(r8a66597, CFIFOSEL) & BIGEND)
 236                                         iowrite8(pb[i], fifoaddr + i);
 237                                 else
 238                                         iowrite8(pb[i], fifoaddr + 3 - i);
 239                         }
 240                 }
 241         } else {
 242                 int odd = len & 0x0001;
 243
 244                 len = len / 2;
 245                 iowrite16_rep(fifoaddr, buf, len);
 246                 if (unlikely(odd)) {
 247                         buf = &buf[len];
 248                         if (r8a66597->pdata->wr0_shorted_to_wr1)
 249                                 r8a66597_bclr(r8a66597, MBW_16, pipe->fifosel);
 250                         iowrite8((unsigned char)*buf, fifoaddr);
 251                         if (r8a66597->pdata->wr0_shorted_to_wr1)
 252                                 r8a66597_bset(r8a66597, MBW_16, pipe->fifosel);
 253                 }
 254         }
 255 }
 256
 257 static inline unsigned long get_syscfg_reg(int port)
 258 {
 259         return port == 0 ? SYSCFG0 : SYSCFG1;
 260 }
 261
 262 static inline unsigned long get_syssts_reg(int port)
 263 {
 264         return port == 0 ? SYSSTS0 : SYSSTS1;
 265 }
 266
 267 static inline unsigned long get_dvstctr_reg(int port)
 268 {
 269         return port == 0 ? DVSTCTR0 : DVSTCTR1;
 270 }
 271
 272 static inline unsigned long get_dmacfg_reg(int port)
 273 {
 274         return port == 0 ? DMA0CFG : DMA1CFG;
 275 }
 276
 277 static inline unsigned long get_intenb_reg(int port)
 278 {
 279         return port == 0 ? INTENB1 : INTENB2;
 280 }
 281
 282 static inline unsigned long get_intsts_reg(int port)
 283 {
 284         return port == 0 ? INTSTS1 : INTSTS2;
 285 }
 286
 287 static inline u16 get_rh_usb_speed(struct r8a66597 *r8a66597, int port)
 288 {
 289         unsigned long dvstctr_reg = get_dvstctr_reg(port);
 290
 291         return r8a66597_read(r8a66597, dvstctr_reg) & RHST;
 292 }
 293
 294 static inline void r8a66597_port_power(struct r8a66597 *r8a66597, int port,
 295                                        int power)
 296 {
 297         unsigned long dvstctr_reg = get_dvstctr_reg(port);
 298
 299         if (r8a66597->pdata->port_power) {
 300                 r8a66597->pdata->port_power(port, power);
 301         } else {
 302                 if (power)
 303                         r8a66597_bset(r8a66597, VBOUT, dvstctr_reg);
 304                 else
 305                         r8a66597_bclr(r8a66597, VBOUT, dvstctr_reg);
 306         }
 307 }
 308
 309 static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata)
 310 {
 311         u16 clock = 0;
 312
 313         switch (pdata->xtal) {
 314         case R8A66597_PLATDATA_XTAL_12MHZ:
 315                 clock = XTAL12;
 316                 break;
 317         case R8A66597_PLATDATA_XTAL_24MHZ:
 318                 clock = XTAL24;
 319                 break;
 320         case R8A66597_PLATDATA_XTAL_48MHZ:
 321                 clock = XTAL48;
 322                 break;
 323         default:
 324                 printk(KERN_ERR "r8a66597: platdata clock is wrong.\n");
 325                 break;
 326         }
 327
 328         return clock;
 329 }
 330
 331 #define get_pipectr_addr(pipenum)       (PIPE1CTR + (pipenum - 1) * 2)
 332 #define get_pipetre_addr(pipenum)       (PIPE1TRE + (pipenum - 1) * 4)
 333 #define get_pipetrn_addr(pipenum)       (PIPE1TRN + (pipenum - 1) * 4)
 334 #define get_devadd_addr(address)        (DEVADD0 + address * 2)
 335
 336 #define enable_irq_ready(r8a66597, pipenum)     \
 337         enable_pipe_irq(r8a66597, pipenum, BRDYENB)
 338 #define disable_irq_ready(r8a66597, pipenum)    \
 339         disable_pipe_irq(r8a66597, pipenum, BRDYENB)
 340 #define enable_irq_empty(r8a66597, pipenum)     \
 341         enable_pipe_irq(r8a66597, pipenum, BEMPENB)
 342 #define disable_irq_empty(r8a66597, pipenum)    \
 343         disable_pipe_irq(r8a66597, pipenum, BEMPENB)
 344 #define enable_irq_nrdy(r8a66597, pipenum)      \
 345         enable_pipe_irq(r8a66597, pipenum, NRDYENB)
 346 #define disable_irq_nrdy(r8a66597, pipenum)     \
 347         disable_pipe_irq(r8a66597, pipenum, NRDYENB)
 348
 349 #endif  /* __R8A66597_H__ */
 350