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author | Paul Mundt <lethal@linux-sh.org> | 2008-07-29 16:01:19 +0400 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2008-07-29 16:01:19 +0400 |
commit | da2014a2b080e7f3024a4eb6917d47069ad9620b (patch) | |
tree | cfde12c6d4b5baa222966b14a676f107992cf786 /arch/sh/boards/mach-microdev/io.c | |
parent | 71b8064e7df5698520d73b4c1566a3dbc98eb9ef (diff) | |
download | linux-da2014a2b080e7f3024a4eb6917d47069ad9620b.tar.xz |
sh: Shuffle the board directories in to mach groups.
This flattens out the board directories in to individual mach groups,
we will use this for getting rid of unneeded directories, simplifying
the build system, and becoming more coherent with the refactored
arch/sh/include topology.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/boards/mach-microdev/io.c')
-rw-r--r-- | arch/sh/boards/mach-microdev/io.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-microdev/io.c b/arch/sh/boards/mach-microdev/io.c new file mode 100644 index 000000000000..9f8a540f7e14 --- /dev/null +++ b/arch/sh/boards/mach-microdev/io.c @@ -0,0 +1,367 @@ +/* + * linux/arch/sh/boards/superh/microdev/io.c + * + * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com) + * Copyright (C) 2003, 2004 SuperH, Inc. + * Copyright (C) 2004 Paul Mundt + * + * SuperH SH4-202 MicroDev board support. + * + * May be copied or modified under the terms of the GNU General Public + * License. See linux/COPYING for more information. + */ + +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/wait.h> +#include <asm/io.h> +#include <asm/microdev.h> + + /* + * we need to have a 'safe' address to re-direct all I/O requests + * that we do not explicitly wish to handle. This safe address + * must have the following properies: + * + * * writes are ignored (no exception) + * * reads are benign (no side-effects) + * * accesses of width 1, 2 and 4-bytes are all valid. + * + * The Processor Version Register (PVR) has these properties. + */ +#define PVR 0xff000030 /* Processor Version Register */ + + +#define IO_IDE2_BASE 0x170ul /* I/O base for SMSC FDC37C93xAPM IDE #2 */ +#define IO_IDE1_BASE 0x1f0ul /* I/O base for SMSC FDC37C93xAPM IDE #1 */ +#define IO_ISP1161_BASE 0x290ul /* I/O port for Philips ISP1161x USB chip */ +#define IO_SERIAL2_BASE 0x2f8ul /* I/O base for SMSC FDC37C93xAPM Serial #2 */ +#define IO_LAN91C111_BASE 0x300ul /* I/O base for SMSC LAN91C111 Ethernet chip */ +#define IO_IDE2_MISC 0x376ul /* I/O misc for SMSC FDC37C93xAPM IDE #2 */ +#define IO_SUPERIO_BASE 0x3f0ul /* I/O base for SMSC FDC37C93xAPM SuperIO chip */ +#define IO_IDE1_MISC 0x3f6ul /* I/O misc for SMSC FDC37C93xAPM IDE #1 */ +#define IO_SERIAL1_BASE 0x3f8ul /* I/O base for SMSC FDC37C93xAPM Serial #1 */ + +#define IO_ISP1161_EXTENT 0x04ul /* I/O extent for Philips ISP1161x USB chip */ +#define IO_LAN91C111_EXTENT 0x10ul /* I/O extent for SMSC LAN91C111 Ethernet chip */ +#define IO_SUPERIO_EXTENT 0x02ul /* I/O extent for SMSC FDC37C93xAPM SuperIO chip */ +#define IO_IDE_EXTENT 0x08ul /* I/O extent for IDE Task Register set */ +#define IO_SERIAL_EXTENT 0x10ul + +#define IO_LAN91C111_PHYS 0xa7500000ul /* Physical address of SMSC LAN91C111 Ethernet chip */ +#define IO_ISP1161_PHYS 0xa7700000ul /* Physical address of Philips ISP1161x USB chip */ +#define IO_SUPERIO_PHYS 0xa7800000ul /* Physical address of SMSC FDC37C93xAPM SuperIO chip */ + +/* + * map I/O ports to memory-mapped addresses + */ +static unsigned long microdev_isa_port2addr(unsigned long offset) +{ + unsigned long result; + + if ((offset >= IO_LAN91C111_BASE) && + (offset < IO_LAN91C111_BASE + IO_LAN91C111_EXTENT)) { + /* + * SMSC LAN91C111 Ethernet chip + */ + result = IO_LAN91C111_PHYS + offset - IO_LAN91C111_BASE; + } else if ((offset >= IO_SUPERIO_BASE) && + (offset < IO_SUPERIO_BASE + IO_SUPERIO_EXTENT)) { + /* + * SMSC FDC37C93xAPM SuperIO chip + * + * Configuration Registers + */ + result = IO_SUPERIO_PHYS + (offset << 1); +#if 0 + } else if (offset == KBD_DATA_REG || offset == KBD_CNTL_REG || + offset == KBD_STATUS_REG) { + /* + * SMSC FDC37C93xAPM SuperIO chip + * + * PS/2 Keyboard + Mouse (ports 0x60 and 0x64). + */ + result = IO_SUPERIO_PHYS + (offset << 1); +#endif + } else if (((offset >= IO_IDE1_BASE) && + (offset < IO_IDE1_BASE + IO_IDE_EXTENT)) || + (offset == IO_IDE1_MISC)) { + /* + * SMSC FDC37C93xAPM SuperIO chip + * + * IDE #1 + */ + result = IO_SUPERIO_PHYS + (offset << 1); + } else if (((offset >= IO_IDE2_BASE) && + (offset < IO_IDE2_BASE + IO_IDE_EXTENT)) || + (offset == IO_IDE2_MISC)) { + /* + * SMSC FDC37C93xAPM SuperIO chip + * + * IDE #2 + */ + result = IO_SUPERIO_PHYS + (offset << 1); + } else if ((offset >= IO_SERIAL1_BASE) && + (offset < IO_SERIAL1_BASE + IO_SERIAL_EXTENT)) { + /* + * SMSC FDC37C93xAPM SuperIO chip + * + * Serial #1 + */ + result = IO_SUPERIO_PHYS + (offset << 1); + } else if ((offset >= IO_SERIAL2_BASE) && + (offset < IO_SERIAL2_BASE + IO_SERIAL_EXTENT)) { + /* + * SMSC FDC37C93xAPM SuperIO chip + * + * Serial #2 + */ + result = IO_SUPERIO_PHYS + (offset << 1); + } else if ((offset >= IO_ISP1161_BASE) && + (offset < IO_ISP1161_BASE + IO_ISP1161_EXTENT)) { + /* + * Philips USB ISP1161x chip + */ + result = IO_ISP1161_PHYS + offset - IO_ISP1161_BASE; + } else { + /* + * safe default. + */ + printk("Warning: unexpected port in %s( offset = 0x%lx )\n", + __func__, offset); + result = PVR; + } + + return result; +} + +#define PORT2ADDR(x) (microdev_isa_port2addr(x)) + +static inline void delay(void) +{ +#if defined(CONFIG_PCI) + /* System board present, just make a dummy SRAM access. (CS0 will be + mapped to PCI memory, probably good to avoid it.) */ + ctrl_inw(0xa6800000); +#else + /* CS0 will be mapped to flash, ROM etc so safe to access it. */ + ctrl_inw(0xa0000000); +#endif +} + +unsigned char microdev_inb(unsigned long port) +{ +#ifdef CONFIG_PCI + if (port >= PCIBIOS_MIN_IO) + return microdev_pci_inb(port); +#endif + return *(volatile unsigned char*)PORT2ADDR(port); +} + +unsigned short microdev_inw(unsigned long port) +{ +#ifdef CONFIG_PCI + if (port >= PCIBIOS_MIN_IO) + return microdev_pci_inw(port); +#endif + return *(volatile unsigned short*)PORT2ADDR(port); +} + +unsigned int microdev_inl(unsigned long port) +{ +#ifdef CONFIG_PCI + if (port >= PCIBIOS_MIN_IO) + return microdev_pci_inl(port); +#endif + return *(volatile unsigned int*)PORT2ADDR(port); +} + +void microdev_outw(unsigned short b, unsigned long port) +{ +#ifdef CONFIG_PCI + if (port >= PCIBIOS_MIN_IO) { + microdev_pci_outw(b, port); + return; + } +#endif + *(volatile unsigned short*)PORT2ADDR(port) = b; +} + +void microdev_outb(unsigned char b, unsigned long port) +{ +#ifdef CONFIG_PCI + if (port >= PCIBIOS_MIN_IO) { + microdev_pci_outb(b, port); + return; + } +#endif + + /* + * There is a board feature with the current SH4-202 MicroDev in + * that the 2 byte enables (nBE0 and nBE1) are tied together (and + * to the Chip Select Line (Ethernet_CS)). Due to this connectivity, + * it is not possible to safely perform 8-bit writes to the + * Ethernet registers, as 16-bits will be consumed from the Data + * lines (corrupting the other byte). Hence, this function is + * written to implement 16-bit read/modify/write for all byte-wide + * accesses. + * + * Note: there is no problem with byte READS (even or odd). + * + * Sean McGoogan - 16th June 2003. + */ + if ((port >= IO_LAN91C111_BASE) && + (port < IO_LAN91C111_BASE + IO_LAN91C111_EXTENT)) { + /* + * Then are trying to perform a byte-write to the + * LAN91C111. This needs special care. + */ + if (port % 2 == 1) { /* is the port odd ? */ + /* unset bit-0, i.e. make even */ + const unsigned long evenPort = port-1; + unsigned short word; + + /* + * do a 16-bit read/write to write to 'port', + * preserving even byte. + * + * Even addresses are bits 0-7 + * Odd addresses are bits 8-15 + */ + word = microdev_inw(evenPort); + word = (word & 0xffu) | (b << 8); + microdev_outw(word, evenPort); + } else { + /* else, we are trying to do an even byte write */ + unsigned short word; + + /* + * do a 16-bit read/write to write to 'port', + * preserving odd byte. + * + * Even addresses are bits 0-7 + * Odd addresses are bits 8-15 + */ + word = microdev_inw(port); + word = (word & 0xff00u) | (b); + microdev_outw(word, port); + } + } else { + *(volatile unsigned char*)PORT2ADDR(port) = b; + } +} + +void microdev_outl(unsigned int b, unsigned long port) +{ +#ifdef CONFIG_PCI + if (port >= PCIBIOS_MIN_IO) { + microdev_pci_outl(b, port); + return; + } +#endif + *(volatile unsigned int*)PORT2ADDR(port) = b; +} + +unsigned char microdev_inb_p(unsigned long port) +{ + unsigned char v = microdev_inb(port); + delay(); + return v; +} + +unsigned short microdev_inw_p(unsigned long port) +{ + unsigned short v = microdev_inw(port); + delay(); + return v; +} + +unsigned int microdev_inl_p(unsigned long port) +{ + unsigned int v = microdev_inl(port); + delay(); + return v; +} + +void microdev_outb_p(unsigned char b, unsigned long port) +{ + microdev_outb(b, port); + delay(); +} + +void microdev_outw_p(unsigned short b, unsigned long port) +{ + microdev_outw(b, port); + delay(); +} + +void microdev_outl_p(unsigned int b, unsigned long port) +{ + microdev_outl(b, port); + delay(); +} + +void microdev_insb(unsigned long port, void *buffer, unsigned long count) +{ + volatile unsigned char *port_addr; + unsigned char *buf = buffer; + + port_addr = (volatile unsigned char *)PORT2ADDR(port); + + while (count--) + *buf++ = *port_addr; +} + +void microdev_insw(unsigned long port, void *buffer, unsigned long count) +{ + volatile unsigned short *port_addr; + unsigned short *buf = buffer; + + port_addr = (volatile unsigned short *)PORT2ADDR(port); + + while (count--) + *buf++ = *port_addr; +} + +void microdev_insl(unsigned long port, void *buffer, unsigned long count) +{ + volatile unsigned long *port_addr; + unsigned int *buf = buffer; + + port_addr = (volatile unsigned long *)PORT2ADDR(port); + + while (count--) + *buf++ = *port_addr; +} + +void microdev_outsb(unsigned long port, const void *buffer, unsigned long count) +{ + volatile unsigned char *port_addr; + const unsigned char *buf = buffer; + + port_addr = (volatile unsigned char *)PORT2ADDR(port); + + while (count--) + *port_addr = *buf++; +} + +void microdev_outsw(unsigned long port, const void *buffer, unsigned long count) +{ + volatile unsigned short *port_addr; + const unsigned short *buf = buffer; + + port_addr = (volatile unsigned short *)PORT2ADDR(port); + + while (count--) + *port_addr = *buf++; +} + +void microdev_outsl(unsigned long port, const void *buffer, unsigned long count) +{ + volatile unsigned long *port_addr; + const unsigned int *buf = buffer; + + port_addr = (volatile unsigned long *)PORT2ADDR(port); + + while (count--) + *port_addr = *buf++; +} |