litmus-rt.git - The LITMUS^RT kernel.

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author	Ben Dooks <ben@trinity.fluff.org>	2007-05-20 13:13:32 -0400
committer	Russell King <rmk+kernel@arm.linux.org.uk>	2007-05-20 15:03:31 -0400
commit	69e9c93d0d7d9dfa6bdf5144274dbe65a627b63a (patch)
tree	8e45225da8b36af48232c7319a5976def3a6a00e /arch/um/os-Linux/process.c
parent	42482e3c77bcb310affdf13e92b93f077d44a7fc (diff)

[ARM] 4400/1: S3C24XX: Add high-speed MMC device definition

Add definition for high-speed MMC/SD device and add to SMDK2443 device list. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Diffstat (limited to 'arch/um/os-Linux/process.c')

0 files changed, 0 insertions, 0 deletions

/* * Helper functions for the PM3386s on the Radisys ENP2611 * Copyright (C) 2004, 2005 Lennert Buytenhek <buytenh@wantstofly.org> * Dedicated to Marija Kulikova. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include <linux/module.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <asm/io.h> #include "pm3386.h" /* * Read from register 'reg' of PM3386 device 'pm'. */ static u16 pm3386_reg_read(int pm, int reg) { void *_reg; u16 value; _reg = (void *)ENP2611_PM3386_0_VIRT_BASE; if (pm == 1) _reg = (void *)ENP2611_PM3386_1_VIRT_BASE; value = *((volatile u16 *)(_reg + (reg << 1))); // printk(KERN_INFO "pm3386_reg_read(%d, %.3x) = %.8x\n", pm, reg, value); return value; } /* * Write to register 'reg' of PM3386 device 'pm', and perform * a readback from the identification register. */ static void pm3386_reg_write(int pm, int reg, u16 value) { void *_reg; u16 dummy; // printk(KERN_INFO "pm3386_reg_write(%d, %.3x, %.8x)\n", pm, reg, value); _reg = (void *)ENP2611_PM3386_0_VIRT_BASE; if (pm == 1) _reg = (void *)ENP2611_PM3386_1_VIRT_BASE; *((volatile u16 *)(_reg + (reg << 1))) = value; dummy = *((volatile u16 *)_reg); __asm__ __volatile__("mov %0, %0" : "+r" (dummy)); } /* * Read from port 'port' register 'reg', where the registers * for the different ports are 'spacing' registers apart. */ static u16 pm3386_port_reg_read(int port, int _reg, int spacing) { int reg; reg = _reg; if (port & 1) reg += spacing; return pm3386_reg_read(port >> 1, reg); } /* * Write to port 'port' register 'reg', where the registers * for the different ports are 'spacing' registers apart. */ static void pm3386_port_reg_write(int port, int _reg, int spacing, u16 value) { int reg; reg = _reg; if (port & 1) reg += spacing; pm3386_reg_write(port >> 1, reg, value); } int pm3386_secondary_present(void) { return pm3386_reg_read(1, 0) == 0x3386; } void pm3386_reset(void) { u8 mac[3][6]; int secondary; secondary = pm3386_secondary_present(); /* Save programmed MAC addresses. */ pm3386_get_mac(0, mac[0]); pm3386_get_mac(1, mac[1]); if (secondary) pm3386_get_mac(2, mac[2]); /* Assert analog and digital reset. */ pm3386_reg_write(0, 0x002, 0x0060); if (secondary) pm3386_reg_write(1, 0x002, 0x0060); mdelay(1); /* Deassert analog reset. */ pm3386_reg_write(0, 0x002, 0x0062); if (secondary) pm3386_reg_write(1, 0x002, 0x0062); mdelay(10); /* Deassert digital reset. */ pm3386_reg_write(0, 0x002, 0x0063); if (secondary) pm3386_reg_write(1, 0x002, 0x0063); mdelay(10); /* Restore programmed MAC addresses. */ pm3386_set_mac(0, mac[0]); pm3386_set_mac(1, mac[1]); if (secondary) pm3386_set_mac(2, mac[2]); /* Disable carrier on all ports. */ pm3386_set_carrier(0, 0); pm3386_set_carrier(1, 0); if (secondary) pm3386_set_carrier(2, 0); } static u16 swaph(u16 x) { return ((x << 8) | (x >> 8)) & 0xffff; } int pm3386_port_count(void) { return 2 + pm3386_secondary_present(); } void pm3386_init_port(int port) { int pm = port >> 1; /* * Work around ENP2611 bootloader programming MAC address * in reverse. */ if (pm3386_port_reg_read(port, 0x30a, 0x100) == 0x0000 && (pm3386_port_reg_read(port, 0x309, 0x100) & 0xff00) == 0x5000) { u16 temp[3]; temp[0] = pm3386_port_reg_read(port, 0x308, 0x100); temp[1] = pm3386_port_reg_read(port, 0x309, 0x100); temp[2] = pm3386_port_reg_read(port, 0x30a, 0x100); pm3386_port_reg_write(port, 0x308, 0x100, swaph(temp[2])); pm3386_port_reg_write(port, 0x309, 0x100, swaph(temp[1])); pm3386_port_reg_write(port, 0x30a, 0x100, swaph(temp[0])); } /* * Initialise narrowbanding mode. See application note 2010486 * for more information. (@@@ We also need to issue a reset * when ROOL or DOOL are detected.) */ pm3386_port_reg_write(port, 0x708, 0x10, 0xd055); udelay(500); pm3386_port_reg_write(port, 0x708, 0x10, 0x5055); /* * SPI-3 ingress block. Set 64 bytes SPI-3 burst size * towards SPI-3 bridge. */ pm3386_port_reg_write(port, 0x122, 0x20, 0x0002); /* * Enable ingress protocol checking, and soft reset the * SPI-3 ingress block. */ pm3386_reg_write(pm, 0x103, 0x0003); while (!(pm3386_reg_read(pm, 0x103) & 0x80)) ; /* * SPI-3 egress block. Gather 12288 bytes of the current * packet in the TX fifo before initiating transmit on the * SERDES interface. (Prevents TX underflows.) */ pm3386_port_reg_write(port, 0x221, 0x20, 0x0007); /* * Enforce odd parity from the SPI-3 bridge, and soft reset * the SPI-3 egress block. */ pm3386_reg_write(pm, 0x203, 0x000d & ~(4 << (port & 1))); while ((pm3386_reg_read(pm, 0x203) & 0x000c) != 0x000c) ; /* * EGMAC block. Set this channels to reject long preambles, * not send or transmit PAUSE frames, enable preamble checking, * disable frame length checking, enable FCS appending, enable * TX frame padding. */ pm3386_port_reg_write(port, 0x302, 0x100, 0x0113); /* * Soft reset the EGMAC block. */ pm3386_port_reg_write(port, 0x301, 0x100, 0x8000); pm3386_port_reg_write(port, 0x301, 0x100, 0x0000); /* * Auto-sense autonegotiation status. */ pm3386_port_reg_write(port, 0x306, 0x100, 0x0100); /* * Allow reception of jumbo frames. */ pm3386_port_reg_write(port, 0x310, 0x100, 9018); /* * Allow transmission of jumbo frames. */ pm3386_port_reg_write(port, 0x336, 0x100, 9018); /* @@@ Should set 0x337/0x437 (RX forwarding threshold.) */ /* * Set autonegotiation parameters to 'no PAUSE, full duplex.' */ pm3386_port_reg_write(port, 0x31c, 0x100, 0x0020); /* * Enable and restart autonegotiation. */ pm3386_port_reg_write(port, 0x318, 0x100, 0x0003); pm3386_port_reg_write(port, 0x318, 0x100, 0x0002); } void pm3386_get_mac(int port, u8 *mac) { u16 temp; temp = pm3386_port_reg_read(port, 0x308, 0x100); mac[0] = temp & 0xff; mac[1] = (temp >> 8) & 0xff; temp = pm3386_port_reg_read(port, 0x309, 0x100); mac[2] = temp & 0xff; mac[3] = (temp >> 8) & 0xff; temp = pm3386_port_reg_read(port, 0x30a, 0x100); mac[4] = temp & 0xff; mac[5] = (temp >> 8) & 0xff; }


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