mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 16:38:31 +00:00
959f85f8a3
This cleans up quite a lot of the PCI mess that we currently have, and attempts to consolidate the duplication in the SH7780 and SH7751 PCI controllers. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
138 lines
3.2 KiB
C
138 lines
3.2 KiB
C
/*
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* Copyright (C) 2002 David McCullough <davidm@snapgear.com>
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* Copyright (C) 2001 Ian da Silva, Jeremy Siegel
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* Based largely on io_se.c.
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*
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* I/O routine for Hitachi 7751 SolutionEngine.
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*
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* Initial version only to support LAN access; some
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* placeholder code from io_se.c left in with the
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* expectation of later SuperIO and PCMCIA access.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/pci.h>
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#include <asm/io.h>
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#include <asm/addrspace.h>
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#ifdef CONFIG_SH_SECUREEDGE5410
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unsigned short secureedge5410_ioport;
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#endif
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static inline volatile __u16 *port2adr(unsigned int port)
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{
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maybebadio((unsigned long)port);
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return (volatile __u16*)port;
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}
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/*
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* General outline: remap really low stuff [eventually] to SuperIO,
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* stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO)
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* is mapped through the PCI IO window. Stuff with high bits (PXSEG)
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* should be way beyond the window, and is used w/o translation for
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* compatibility.
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*/
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unsigned char snapgear_inb(unsigned long port)
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{
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if (PXSEG(port))
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return *(volatile unsigned char *)port;
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else if (is_pci_ioaddr(port))
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return *(volatile unsigned char *)pci_ioaddr(port);
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else
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return (*port2adr(port)) & 0xff;
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}
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unsigned char snapgear_inb_p(unsigned long port)
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{
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unsigned char v;
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if (PXSEG(port))
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v = *(volatile unsigned char *)port;
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else if (is_pci_ioaddr(port))
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v = *(volatile unsigned char *)pci_ioaddr(port);
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else
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v = (*port2adr(port))&0xff;
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ctrl_delay();
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return v;
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}
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unsigned short snapgear_inw(unsigned long port)
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{
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if (PXSEG(port))
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return *(volatile unsigned short *)port;
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else if (is_pci_ioaddr(port))
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return *(volatile unsigned short *)pci_ioaddr(port);
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else if (port >= 0x2000)
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return *port2adr(port);
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else
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maybebadio(port);
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return 0;
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}
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unsigned int snapgear_inl(unsigned long port)
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{
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if (PXSEG(port))
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return *(volatile unsigned long *)port;
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else if (is_pci_ioaddr(port))
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return *(volatile unsigned int *)pci_ioaddr(port);
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else if (port >= 0x2000)
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return *port2adr(port);
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else
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maybebadio(port);
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return 0;
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}
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void snapgear_outb(unsigned char value, unsigned long port)
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{
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if (PXSEG(port))
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*(volatile unsigned char *)port = value;
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else if (is_pci_ioaddr(port))
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*((unsigned char*)pci_ioaddr(port)) = value;
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else
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*(port2adr(port)) = value;
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}
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void snapgear_outb_p(unsigned char value, unsigned long port)
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{
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if (PXSEG(port))
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*(volatile unsigned char *)port = value;
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else if (is_pci_ioaddr(port))
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*((unsigned char*)pci_ioaddr(port)) = value;
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else
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*(port2adr(port)) = value;
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ctrl_delay();
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}
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void snapgear_outw(unsigned short value, unsigned long port)
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{
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if (PXSEG(port))
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*(volatile unsigned short *)port = value;
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else if (is_pci_ioaddr(port))
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*((unsigned short *)pci_ioaddr(port)) = value;
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else if (port >= 0x2000)
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*port2adr(port) = value;
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else
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maybebadio(port);
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}
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void snapgear_outl(unsigned int value, unsigned long port)
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{
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if (PXSEG(port))
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*(volatile unsigned long *)port = value;
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else if (is_pci_ioaddr(port))
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*((unsigned long*)pci_ioaddr(port)) = value;
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else
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maybebadio(port);
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}
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void snapgear_insl(unsigned long port, void *addr, unsigned long count)
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{
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maybebadio(port);
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}
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void snapgear_outsl(unsigned long port, const void *addr, unsigned long count)
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{
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maybebadio(port);
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}
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