[PATCH] m32r: bootloader support for OPSPUT platform

This patch supports "m32r-g00ff" bootloader for an OPSPUT platform.

Applying this patch, it is possible to do ATA-boot from an IDE drive or
HTTP-boot from network by m32r-g00ff.

    * arch/m32r/boot/compressed/m32r_sio.c: Fix hangup on OPSPUT at boot.

    * arch/m32r/kernel/io_opsput.c: IDE support for OPSPUT.
    * arch/m32r/kernel/setup_opsput.c: ditto.
    * include/asm-m32r/ide.h: ditto.

Signed-off-by: Kazuhiro Inaoka <inaoka@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 76 insertions, 12 deletions

diff --git a/arch/m32r/kernel/io_opsput.c b/arch/m32r/kernel/io_opsput.c
index da6c5f5c1f82..3cbb1f717e50 100644
--- a/arch/m32r/kernel/io_opsput.c
+++ b/arch/m32r/kernel/io_opsput.c
@@ -30,14 +30,34 @@ 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)
+#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.
@@ -97,6 +117,12 @@ 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;
@@ -112,6 +138,11 @@ 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);
@@ -164,6 +195,11 @@ 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);
@@ -177,6 +213,11 @@ 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;
@@ -222,6 +263,14 @@ 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),
@@ -254,6 +303,12 @@ void _insw(unsigned int port, void *addr, unsigned long count)
                 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--)
@@ -280,6 +335,12 @@ void _outsb(unsigned int port, const void *addr, unsigned long count)
                 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),
@@ -305,6 +366,12 @@ void _outsw(unsigned int port, const void *addr, unsigned long count)
                 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),
diff --git a/arch/m32r/kernel/setup_opsput.c b/arch/m32r/kernel/setup_opsput.c
index 61d3b01cbe07..62d6b71de45f 100644
--- a/arch/m32r/kernel/setup_opsput.c
+++ b/arch/m32r/kernel/setup_opsput.c
@@ -218,13 +218,13 @@ static void shutdown_opsput_lanpld_irq(unsigned int irq)
 
 static struct hw_interrupt_type opsput_lanpld_irq_type =
 {
-        "OPSPUT-PLD-LAN-IRQ",
-        startup_opsput_lanpld_irq,
-        shutdown_opsput_lanpld_irq,
-        enable_opsput_lanpld_irq,
-        disable_opsput_lanpld_irq,
-        mask_and_ack_opsput_lanpld,
-        end_opsput_lanpld_irq
+        .typename = "OPSPUT-PLD-LAN-IRQ",
+        .startup = startup_opsput_lanpld_irq,
+        .shutdown = shutdown_opsput_lanpld_irq,
+        .enable = enable_opsput_lanpld_irq,
+        .disable = disable_opsput_lanpld_irq,
+        .ack = mask_and_ack_opsput_lanpld,
+        .end = end_opsput_lanpld_irq
 };
 
 /*
@@ -374,7 +374,6 @@ void __init init_IRQ(void)
         disable_opsput_pld_irq(PLD_IRQ_SIO0_SND);
 #endif  /* CONFIG_SERIAL_M32R_PLDSIO */
 
-#if defined(CONFIG_M32R_CFC)
         /* INT#1: CFC IREQ on PLD */
         irq_desc[PLD_IRQ_CFIREQ].status = IRQ_DISABLED;
         irq_desc[PLD_IRQ_CFIREQ].chip = &opsput_pld_irq_type;
@@ -398,8 +397,6 @@ void __init init_IRQ(void)
         irq_desc[PLD_IRQ_CFC_EJECT].depth = 1;  /* disable nested irq */
         pld_icu_data[irq2pldirq(PLD_IRQ_CFC_EJECT)].icucr = PLD_ICUCR_IEN|PLD_ICUCR_ISMOD02;    /* 'H' edge sense */
         disable_opsput_pld_irq(PLD_IRQ_CFC_EJECT);
-#endif /* CONFIG_M32R_CFC */
-
 
         /*
          * INT0# is used for LAN, DIO