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io.c

/*
 *  linux/arch/m32r/platforms/opsput/io.c
 *
 *  Typical I/O routines for OPSPUT board.
 *
 *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
 *                           Hitoshi Yamamoto, Takeo Takahashi
 *
 *  This file is subject to the terms and conditions of the GNU General
 *  Public License.  See the file "COPYING" in the main directory of this
 *  archive for more details.
 */

#include <asm/m32r.h>
#include <asm/page.h>
#include <asm/io.h>
#include <asm/byteorder.h>

#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
#include <linux/types.h>

#define M32R_PCC_IOMAP_SIZE 0x1000

#define M32R_PCC_IOSTART0 0x1000
#define M32R_PCC_IOEND0   (M32R_PCC_IOSTART0 + M32R_PCC_IOMAP_SIZE - 1)

extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
#endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */

#define PORT2ADDR(port)       _port2addr(port)
#define PORT2ADDR_USB(port)   _port2addr_usb(port)

static inline void *_port2addr(unsigned long port)
{
      return (void *)(port | NONCACHE_OFFSET);
}

#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
static inline void *__port2addr_ata(unsigned long port)
{
      static int  dummy_reg;

      switch (port) {
      case 0x1f0: return (void *)(0x0c002000 | NONCACHE_OFFSET);
      case 0x1f1: return (void *)(0x0c012800 | NONCACHE_OFFSET);
      case 0x1f2: return (void *)(0x0c012002 | NONCACHE_OFFSET);
      case 0x1f3: return (void *)(0x0c012802 | NONCACHE_OFFSET);
      case 0x1f4: return (void *)(0x0c012004 | NONCACHE_OFFSET);
      case 0x1f5: return (void *)(0x0c012804 | NONCACHE_OFFSET);
      case 0x1f6: return (void *)(0x0c012006 | NONCACHE_OFFSET);
      case 0x1f7: return (void *)(0x0c012806 | NONCACHE_OFFSET);
      case 0x3f6: return (void *)(0x0c01200e | NONCACHE_OFFSET);
      default:    return (void *)&dummy_reg;
      }
}
#endif

/*
 * OPSPUT-LAN is located in the extended bus space
 * from 0x10000000 to 0x13ffffff on physical address.
 * The base address of LAN controller(LAN91C111) is 0x300.
 */
#define LAN_IOSTART     (0x300 | NONCACHE_OFFSET)
#define LAN_IOEND (0x320 | NONCACHE_OFFSET)
static inline void *_port2addr_ne(unsigned long port)
{
      return (void *)(port + 0x10000000);
}
static inline void *_port2addr_usb(unsigned long port)
{
      return (void *)((port & 0x0f) + NONCACHE_OFFSET + 0x10303000);
}

static inline void delay(void)
{
      __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
}

/*
 * NIC I/O function
 */

#define PORT2ADDR_NE(port)  _port2addr_ne(port)

static inline unsigned char _ne_inb(void *portp)
{
      return *(volatile unsigned char *)portp;
}

static inline unsigned short _ne_inw(void *portp)
{
      return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
}

static inline void _ne_insb(void *portp, void *addr, unsigned long count)
{
      unsigned char *buf = (unsigned char *)addr;

      while (count--)
            *buf++ = _ne_inb(portp);
}

static inline void _ne_outb(unsigned char b, void *portp)
{
      *(volatile unsigned char *)portp = b;
}

static inline void _ne_outw(unsigned short w, void *portp)
{
      *(volatile unsigned short *)portp = cpu_to_le16(w);
}

unsigned char _inb(unsigned long port)
{
      if (port >= LAN_IOSTART && port < LAN_IOEND)
            return _ne_inb(PORT2ADDR_NE(port));

#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            return *(volatile unsigned char *)__port2addr_ata(port);
      }
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            unsigned char b;
            pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
            return b;
      } else
#endif

      return *(volatile unsigned char *)PORT2ADDR(port);
}

unsigned short _inw(unsigned long port)
{
      if (port >= LAN_IOSTART && port < LAN_IOEND)
            return _ne_inw(PORT2ADDR_NE(port));
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            return *(volatile unsigned short *)__port2addr_ata(port);
      }
#endif
#if defined(CONFIG_USB)
      else if(port >= 0x340 && port < 0x3a0)
            return *(volatile unsigned short *)PORT2ADDR_USB(port);
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            unsigned short w;
            pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
            return w;
      } else
#endif
      return *(volatile unsigned short *)PORT2ADDR(port);
}

unsigned long _inl(unsigned long port)
{
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            unsigned long l;
            pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
            return l;
      } else
#endif
      return *(volatile unsigned long *)PORT2ADDR(port);
}

unsigned char _inb_p(unsigned long port)
{
      unsigned char v = _inb(port);
      delay();
      return (v);
}

unsigned short _inw_p(unsigned long port)
{
      unsigned short v = _inw(port);
      delay();
      return (v);
}

unsigned long _inl_p(unsigned long port)
{
      unsigned long v = _inl(port);
      delay();
      return (v);
}

void _outb(unsigned char b, unsigned long port)
{
      if (port >= LAN_IOSTART && port < LAN_IOEND)
            _ne_outb(b, PORT2ADDR_NE(port));
      else
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            *(volatile unsigned char *)__port2addr_ata(port) = b;
      } else
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
      } else
#endif
            *(volatile unsigned char *)PORT2ADDR(port) = b;
}

void _outw(unsigned short w, unsigned long port)
{
      if (port >= LAN_IOSTART && port < LAN_IOEND)
            _ne_outw(w, PORT2ADDR_NE(port));
      else
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            *(volatile unsigned short *)__port2addr_ata(port) = w;
      } else
#endif
#if defined(CONFIG_USB)
      if(port >= 0x340 && port < 0x3a0)
            *(volatile unsigned short *)PORT2ADDR_USB(port) = w;
      else
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
      } else
#endif
            *(volatile unsigned short *)PORT2ADDR(port) = w;
}

void _outl(unsigned long l, unsigned long port)
{
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
      } else
#endif
      *(volatile unsigned long *)PORT2ADDR(port) = l;
}

void _outb_p(unsigned char b, unsigned long port)
{
      _outb(b, port);
      delay();
}

void _outw_p(unsigned short w, unsigned long port)
{
      _outw(w, port);
      delay();
}

void _outl_p(unsigned long l, unsigned long port)
{
      _outl(l, port);
      delay();
}

void _insb(unsigned int port, void *addr, unsigned long count)
{
      if (port >= LAN_IOSTART && port < LAN_IOEND)
            _ne_insb(PORT2ADDR_NE(port), addr, count);
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            unsigned char *buf = addr;
            unsigned char *portp = __port2addr_ata(port);
            while (count--)
                  *buf++ = *(volatile unsigned char *)portp;
      }
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            pcc_ioread_byte(0, port, (void *)addr, sizeof(unsigned char),
                        count, 1);
      }
#endif
      else {
            unsigned char *buf = addr;
            unsigned char *portp = PORT2ADDR(port);
            while (count--)
                  *buf++ = *(volatile unsigned char *)portp;
      }
}

void _insw(unsigned int port, void *addr, unsigned long count)
{
      unsigned short *buf = addr;
      unsigned short *portp;

      if (port >= LAN_IOSTART && port < LAN_IOEND) {
            /*
             * This portion is only used by smc91111.c to read data
             * from the DATA_REG. Do not swap the data.
             */
            portp = PORT2ADDR_NE(port);
            while (count--)
                  *buf++ = *(volatile unsigned short *)portp;
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
                        count, 1);
#endif
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            portp = __port2addr_ata(port);
            while (count--)
                  *buf++ = *(volatile unsigned short *)portp;
#endif
      } else {
            portp = PORT2ADDR(port);
            while (count--)
                  *buf++ = *(volatile unsigned short *)portp;
      }
}

void _insl(unsigned int port, void *addr, unsigned long count)
{
      unsigned long *buf = addr;
      unsigned long *portp;

      portp = PORT2ADDR(port);
      while (count--)
            *buf++ = *(volatile unsigned long *)portp;
}

void _outsb(unsigned int port, const void *addr, unsigned long count)
{
      const unsigned char *buf = addr;
      unsigned char *portp;

      if (port >= LAN_IOSTART && port < LAN_IOEND) {
            portp = PORT2ADDR_NE(port);
            while (count--)
                  _ne_outb(*buf++, portp);
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            portp = __port2addr_ata(port);
            while (count--)
                  *(volatile unsigned char *)portp = *buf++;
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
                         count, 1);
#endif
      } else {
            portp = PORT2ADDR(port);
            while (count--)
                  *(volatile unsigned char *)portp = *buf++;
      }
}

void _outsw(unsigned int port, const void *addr, unsigned long count)
{
      const unsigned short *buf = addr;
      unsigned short *portp;

      if (port >= LAN_IOSTART && port < LAN_IOEND) {
            /*
             * This portion is only used by smc91111.c to write data
             * into the DATA_REG. Do not swap the data.
             */
            portp = PORT2ADDR_NE(port);
            while (count--)
                  *(volatile unsigned short *)portp = *buf++;
#if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
      } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
            portp = __port2addr_ata(port);
            while (count--)
                  *(volatile unsigned short *)portp = *buf++;
#endif
#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
      } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
            pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
                         count, 1);
#endif
      } else {
            portp = PORT2ADDR(port);
            while (count--)
                  *(volatile unsigned short *)portp = *buf++;
      }
}

void _outsl(unsigned int port, const void *addr, unsigned long count)
{
      const unsigned long *buf = addr;
      unsigned char *portp;

      portp = PORT2ADDR(port);
      while (count--)
            *(volatile unsigned long *)portp = *buf++;
}

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