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-rw-r--r--arch/sh/boards/se/7751/io.c171
1 files changed, 31 insertions, 140 deletions
diff --git a/arch/sh/boards/se/7751/io.c b/arch/sh/boards/se/7751/io.c
index 99041b269261..e8d846cec89d 100644
--- a/arch/sh/boards/se/7751/io.c
+++ b/arch/sh/boards/se/7751/io.c
@@ -1,6 +1,4 @@
-/*
- * linux/arch/sh/kernel/io_7751se.c
- *
+/*
* Copyright (C) 2001 Ian da Silva, Jeremy Siegel
* Based largely on io_se.c.
*
@@ -10,96 +8,21 @@
* placeholder code from io_se.c left in with the
* expectation of later SuperIO and PCMCIA access.
*/
-
#include <linux/kernel.h>
#include <linux/types.h>
+#include <linux/pci.h>
#include <asm/io.h>
-#include <asm/se7751/se7751.h>
+#include <asm/se7751.h>
#include <asm/addrspace.h>
-#include <linux/pci.h>
-#include "../../../drivers/pci/pci-sh7751.h"
-
-#if 0
-/******************************************************************
- * Variables from io_se.c, related to PCMCIA (not PCI); we're not
- * compiling them in, and have removed references from functions
- * which follow. [Many checked for IO ports in the range bounded
- * by sh_pcic_io_start/stop, and used sh_pcic_io_wbase as offset.
- * As start/stop are uninitialized, only port 0x0 would match?]
- * When used, remember to adjust names to avoid clash with io_se?
- *****************************************************************/
-/* SH pcmcia io window base, start and end. */
-int sh_pcic_io_wbase = 0xb8400000;
-int sh_pcic_io_start;
-int sh_pcic_io_stop;
-int sh_pcic_io_type;
-int sh_pcic_io_dummy;
-/*************************************************************/
-#endif
-
-/*
- * The 7751 Solution Engine uses the built-in PCI controller (PCIC)
- * of the 7751 processor, and has a SuperIO accessible via the PCI.
- * The board also includes a PCMCIA controller on its memory bus,
- * like the other Solution Engine boards.
- */
-
-#define PCIIOBR (volatile long *)PCI_REG(SH7751_PCIIOBR)
-#define PCIMBR (volatile long *)PCI_REG(SH7751_PCIMBR)
-#define PCI_IO_AREA SH7751_PCI_IO_BASE
-#define PCI_MEM_AREA SH7751_PCI_CONFIG_BASE
-
-#define PCI_IOMAP(adr) (PCI_IO_AREA + (adr & ~SH7751_PCIIOBR_MASK))
-
-#define maybebadio(name,port) \
- printk("bad PC-like io %s for port 0x%lx at 0x%08x\n", \
- #name, (port), (__u32) __builtin_return_address(0))
-
-static inline void delay(void)
-{
- ctrl_inw(0xa0000000);
-}
-
-static inline volatile __u16 *
-port2adr(unsigned int port)
+static inline volatile u16 *port2adr(unsigned int port)
{
if (port >= 0x2000)
return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
-#if 0
- else
- return (volatile __u16 *) (PA_SUPERIO + (port << 1));
-#endif
- maybebadio(name,(unsigned long)port);
+ maybebadio((unsigned long)port);
return (volatile __u16*)port;
}
-#if 0
-/* The 7751 Solution Engine seems to have everything hooked */
-/* up pretty normally (nothing on high-bytes only...) so this */
-/* shouldn't be needed */
-static inline int
-shifted_port(unsigned long port)
-{
- /* For IDE registers, value is not shifted */
- if ((0x1f0 <= port && port < 0x1f8) || port == 0x3f6)
- return 0;
- else
- return 1;
-}
-#endif
-
-/* In case someone configures the kernel w/o PCI support: in that */
-/* scenario, don't ever bother to check for PCI-window addresses */
-
-/* NOTE: WINDOW CHECK MAY BE A BIT OFF, HIGH PCIBIOS_MIN_IO WRAPS? */
-#if defined(CONFIG_PCI)
-#define CHECK_SH7751_PCIIO(port) \
- ((port >= PCIBIOS_MIN_IO) && (port < (PCIBIOS_MIN_IO + SH7751_PCI_IO_SIZE)))
-#else
-#define CHECK_SH7751_PCIIO(port) (0)
-#endif
-
/*
* General outline: remap really low stuff [eventually] to SuperIO,
* stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO)
@@ -111,10 +34,10 @@ unsigned char sh7751se_inb(unsigned long port)
{
if (PXSEG(port))
return *(volatile unsigned char *)port;
- else if (CHECK_SH7751_PCIIO(port))
- return *(volatile unsigned char *)PCI_IOMAP(port);
+ else if (is_pci_ioaddr(port))
+ return *(volatile unsigned char *)pci_ioaddr(port);
else
- return (*port2adr(port))&0xff;
+ return (*port2adr(port)) & 0xff;
}
unsigned char sh7751se_inb_p(unsigned long port)
@@ -123,11 +46,11 @@ unsigned char sh7751se_inb_p(unsigned long port)
if (PXSEG(port))
v = *(volatile unsigned char *)port;
- else if (CHECK_SH7751_PCIIO(port))
- v = *(volatile unsigned char *)PCI_IOMAP(port);
+ else if (is_pci_ioaddr(port))
+ v = *(volatile unsigned char *)pci_ioaddr(port);
else
- v = (*port2adr(port))&0xff;
- delay();
+ v = (*port2adr(port)) & 0xff;
+ ctrl_delay();
return v;
}
@@ -135,12 +58,12 @@ unsigned short sh7751se_inw(unsigned long port)
{
if (PXSEG(port))
return *(volatile unsigned short *)port;
- else if (CHECK_SH7751_PCIIO(port))
- return *(volatile unsigned short *)PCI_IOMAP(port);
+ else if (is_pci_ioaddr(port))
+ return *(volatile unsigned short *)pci_ioaddr(port);
else if (port >= 0x2000)
return *port2adr(port);
else
- maybebadio(inw, port);
+ maybebadio(port);
return 0;
}
@@ -148,12 +71,12 @@ unsigned int sh7751se_inl(unsigned long port)
{
if (PXSEG(port))
return *(volatile unsigned long *)port;
- else if (CHECK_SH7751_PCIIO(port))
- return *(volatile unsigned int *)PCI_IOMAP(port);
+ else if (is_pci_ioaddr(port))
+ return *(volatile unsigned int *)pci_ioaddr(port);
else if (port >= 0x2000)
return *port2adr(port);
else
- maybebadio(inl, port);
+ maybebadio(port);
return 0;
}
@@ -162,8 +85,8 @@ void sh7751se_outb(unsigned char value, unsigned long port)
if (PXSEG(port))
*(volatile unsigned char *)port = value;
- else if (CHECK_SH7751_PCIIO(port))
- *((unsigned char*)PCI_IOMAP(port)) = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned char*)pci_ioaddr(port)) = value;
else
*(port2adr(port)) = value;
}
@@ -172,73 +95,41 @@ void sh7751se_outb_p(unsigned char value, unsigned long port)
{
if (PXSEG(port))
*(volatile unsigned char *)port = value;
- else if (CHECK_SH7751_PCIIO(port))
- *((unsigned char*)PCI_IOMAP(port)) = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned char*)pci_ioaddr(port)) = value;
else
*(port2adr(port)) = value;
- delay();
+ ctrl_delay();
}
void sh7751se_outw(unsigned short value, unsigned long port)
{
if (PXSEG(port))
*(volatile unsigned short *)port = value;
- else if (CHECK_SH7751_PCIIO(port))
- *((unsigned short *)PCI_IOMAP(port)) = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned short *)pci_ioaddr(port)) = value;
else if (port >= 0x2000)
*port2adr(port) = value;
else
- maybebadio(outw, port);
+ maybebadio(port);
}
void sh7751se_outl(unsigned int value, unsigned long port)
{
if (PXSEG(port))
*(volatile unsigned long *)port = value;
- else if (CHECK_SH7751_PCIIO(port))
- *((unsigned long*)PCI_IOMAP(port)) = value;
+ else if (is_pci_ioaddr(port))
+ *((unsigned long*)pci_ioaddr(port)) = value;
else
- maybebadio(outl, port);
+ maybebadio(port);
}
void sh7751se_insl(unsigned long port, void *addr, unsigned long count)
{
- maybebadio(insl, port);
+ maybebadio(port);
}
void sh7751se_outsl(unsigned long port, const void *addr, unsigned long count)
{
- maybebadio(outsw, port);
-}
-
-/* Map ISA bus address to the real address. Only for PCMCIA. */
-
-/* ISA page descriptor. */
-static __u32 sh_isa_memmap[256];
-
-#if 0
-static int
-sh_isa_mmap(__u32 start, __u32 length, __u32 offset)
-{
- int idx;
-
- if (start >= 0x100000 || (start & 0xfff) || (length != 0x1000))
- return -1;
-
- idx = start >> 12;
- sh_isa_memmap[idx] = 0xb8000000 + (offset &~ 0xfff);
- printk("sh_isa_mmap: start %x len %x offset %x (idx %x paddr %x)\n",
- start, length, offset, idx, sh_isa_memmap[idx]);
- return 0;
-}
-#endif
-
-unsigned long
-sh7751se_isa_port2addr(unsigned long offset)
-{
- int idx;
-
- idx = (offset >> 12) & 0xff;
- offset &= 0xfff;
- return sh_isa_memmap[idx] + offset;
+ maybebadio(port);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.