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Diffstat (limited to 'board/mousse/pci.c')
| -rw-r--r-- | board/mousse/pci.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/board/mousse/pci.c b/board/mousse/pci.c new file mode 100644 index 0000000..89ca235 --- /dev/null +++ b/board/mousse/pci.c @@ -0,0 +1,283 @@ +/* + * + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * (C) Copyright 2001 + * James Dougherty (jfd@cs.stanford.edu) + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * PCI Configuration space access support for MPC824x/MPC107 PCI Bridge + */ +#include <common.h> +#include <mpc824x.h> +#include <pci.h> + +#include "mousse.h" + +/* + * Promise ATA/66 support. + */ +#define XFER_PIO_4 0x0C /* 0000|1100 */ +#define XFER_PIO_3 0x0B /* 0000|1011 */ +#define XFER_PIO_2 0x0A /* 0000|1010 */ +#define XFER_PIO_1 0x09 /* 0000|1001 */ +#define XFER_PIO_0 0x08 /* 0000|1000 */ +#define XFER_PIO_SLOW 0x00 /* 0000|0000 */ + +/* Promise Regs */ +#define REG_A 0x01 +#define REG_B 0x02 +#define REG_C 0x04 +#define REG_D 0x08 + +void +pdc202xx_decode_registers (unsigned char registers, unsigned char value) +{ + unsigned char bit = 0, bit1 = 0, bit2 = 0; + switch(registers) { + case REG_A: + bit2 = 0; + printf(" A Register "); + if (value & 0x80) printf("SYNC_IN "); + if (value & 0x40) printf("ERRDY_EN "); + if (value & 0x20) printf("IORDY_EN "); + if (value & 0x10) printf("PREFETCH_EN "); + if (value & 0x08) { printf("PA3 ");bit2 |= 0x08; } + if (value & 0x04) { printf("PA2 ");bit2 |= 0x04; } + if (value & 0x02) { printf("PA1 ");bit2 |= 0x02; } + if (value & 0x01) { printf("PA0 ");bit2 |= 0x01; } + printf("PIO(A) = %d ", bit2); + break; + case REG_B: + bit1 = 0;bit2 = 0; + printf(" B Register "); + if (value & 0x80) { printf("MB2 ");bit1 |= 0x80; } + if (value & 0x40) { printf("MB1 ");bit1 |= 0x40; } + if (value & 0x20) { printf("MB0 ");bit1 |= 0x20; } + printf("DMA(B) = %d ", bit1 >> 5); + if (value & 0x10) printf("PIO_FORCED/PB4 "); + if (value & 0x08) { printf("PB3 ");bit2 |= 0x08; } + if (value & 0x04) { printf("PB2 ");bit2 |= 0x04; } + if (value & 0x02) { printf("PB1 ");bit2 |= 0x02; } + if (value & 0x01) { printf("PB0 ");bit2 |= 0x01; } + printf("PIO(B) = %d ", bit2); + break; + case REG_C: + bit2 = 0; + printf(" C Register "); + if (value & 0x80) printf("DMARQp "); + if (value & 0x40) printf("IORDYp "); + if (value & 0x20) printf("DMAR_EN "); + if (value & 0x10) printf("DMAW_EN "); + + if (value & 0x08) { printf("MC3 ");bit2 |= 0x08; } + if (value & 0x04) { printf("MC2 ");bit2 |= 0x04; } + if (value & 0x02) { printf("MC1 ");bit2 |= 0x02; } + if (value & 0x01) { printf("MC0 ");bit2 |= 0x01; } + printf("DMA(C) = %d ", bit2); + break; + case REG_D: + printf(" D Register "); + break; + default: + return; + } + printf("\n %s ", (registers & REG_D) ? "DP" : + (registers & REG_C) ? "CP" : + (registers & REG_B) ? "BP" : + (registers & REG_A) ? "AP" : "ERROR"); + for (bit=128;bit>0;bit/=2) + printf("%s", (value & bit) ? "1" : "0"); + printf("\n"); +} + +/* + * Promise ATA/66 Support: configure Promise ATA66 card in specified mode. + */ +int +pdc202xx_tune_chipset (pci_dev_t dev, int drive, unsigned char speed) +{ + unsigned short drive_conf; + int err = 0; + unsigned char drive_pci, AP, BP, CP, DP; + unsigned char TA = 0, TB = 0; + + switch (drive) { + case 0: drive_pci = 0x60; break; + case 1: drive_pci = 0x64; break; + case 2: drive_pci = 0x68; break; + case 3: drive_pci = 0x6c; break; + default: return -1; + } + + pci_read_config_word(dev, drive_pci, &drive_conf); + pci_read_config_byte(dev, (drive_pci), &AP); + pci_read_config_byte(dev, (drive_pci)|0x01, &BP); + pci_read_config_byte(dev, (drive_pci)|0x02, &CP); + pci_read_config_byte(dev, (drive_pci)|0x03, &DP); + + if ((AP & 0x0F) || (BP & 0x07)) { + /* clear PIO modes of lower 8421 bits of A Register */ + pci_write_config_byte(dev, (drive_pci), AP & ~0x0F); + pci_read_config_byte(dev, (drive_pci), &AP); + + /* clear PIO modes of lower 421 bits of B Register */ + pci_write_config_byte(dev, (drive_pci)|0x01, BP & ~0x07); + pci_read_config_byte(dev, (drive_pci)|0x01, &BP); + + pci_read_config_byte(dev, (drive_pci), &AP); + pci_read_config_byte(dev, (drive_pci)|0x01, &BP); + } + + pci_read_config_byte(dev, (drive_pci), &AP); + pci_read_config_byte(dev, (drive_pci)|0x01, &BP); + pci_read_config_byte(dev, (drive_pci)|0x02, &CP); + + switch(speed) { + case XFER_PIO_4: TA = 0x01; TB = 0x04; break; + case XFER_PIO_3: TA = 0x02; TB = 0x06; break; + case XFER_PIO_2: TA = 0x03; TB = 0x08; break; + case XFER_PIO_1: TA = 0x05; TB = 0x0C; break; + case XFER_PIO_0: + default: TA = 0x09; TB = 0x13; break; + } + + pci_write_config_byte(dev, (drive_pci), AP|TA); + pci_write_config_byte(dev, (drive_pci)|0x01, BP|TB); + + pci_read_config_byte(dev, (drive_pci), &AP); + pci_read_config_byte(dev, (drive_pci)|0x01, &BP); + pci_read_config_byte(dev, (drive_pci)|0x02, &CP); + pci_read_config_byte(dev, (drive_pci)|0x03, &DP); + + +#ifdef PDC202XX_DEBUG + pdc202xx_decode_registers(REG_A, AP); + pdc202xx_decode_registers(REG_B, BP); + pdc202xx_decode_registers(REG_C, CP); + pdc202xx_decode_registers(REG_D, DP); +#endif + return err; +} +/* + * Show/Init PCI devices on the specified bus number. + */ + +void pci_mousse_fixup_irq(struct pci_controller *hose, pci_dev_t dev) +{ + unsigned int line; + + switch(PCI_DEV(dev)) { + case 0x0d: + line = 0x00000101; + break; + + case 0x0e: + default: + line = 0x00000303; + break; + } + + pci_write_config_dword(dev, PCI_INTERRUPT_LINE, line); +} + +void pci_mousse_setup_pdc202xx(struct pci_controller *hose, pci_dev_t dev, + struct pci_config_table *_) +{ + unsigned short vendorId; + unsigned int mbar0, cmd; + int bar, a; + + pci_read_config_word(dev, PCI_VENDOR_ID, &vendorId); + + if(vendorId == PCI_VENDOR_ID_PROMISE || vendorId == PCI_VENDOR_ID_CMD){ + /* PDC 202xx card is handled differently, it is a bootable + * device and needs all 5 MBAR's configured + */ + for(bar = 0; bar < 5; bar++){ + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0+bar*4, &mbar0); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0+bar*4, ~0); + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0+bar*4, &mbar0); +#ifdef DEBUG + printf(" ATA_bar[%d] = %dbytes\n", bar, + ~(mbar0 & PCI_BASE_ADDRESS_MEM_MASK) + 1); +#endif + } + + /* Program all BAR's */ + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, PROMISE_MBAR0); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, PROMISE_MBAR1); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_2, PROMISE_MBAR2); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_3, PROMISE_MBAR3); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_4, PROMISE_MBAR4); + pci_write_config_dword(dev, PCI_BASE_ADDRESS_5, PROMISE_MBAR5); + + for(bar = 0; bar < 5; bar++){ + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0+bar*4, &mbar0); +#ifdef DEBUG + printf(" ATA_bar[%d]@0x%x\n", bar, mbar0); +#endif + } + + /* Enable ROM Expansion base */ + pci_write_config_dword(dev, PCI_ROM_ADDRESS, PROMISE_MBAR5|1); + + /* Io enable, Memory enable, master enable */ + pci_read_config_dword(dev, PCI_COMMAND, &cmd); + cmd &= ~0xffff0000; + cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; + pci_write_config_dword(dev, PCI_COMMAND, cmd); + + /* Breath some life into the controller */ + for( a = 0; a < 4; a++) + pdc202xx_tune_chipset(dev, a, XFER_PIO_0); + } +} + +static struct pci_config_table pci_sandpoint_config_table[] = { + { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x00, 0x0e, 0x00, + pci_mousse_setup_pdc202xx }, +#ifndef CONFIG_PCI_PNP + { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0x00, 0x0d, 0x00, + pci_cfgfunc_config_device, {PCI_ENET_IOADDR, + PCI_ENET_MEMADDR, + PCI_COMMAND_MEMORY | + PCI_COMMAND_MASTER}}, + { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, + pci_cfgfunc_config_device, {PCI_SLOT_IOADDR, + PCI_SLOT_MEMADDR, + PCI_COMMAND_MEMORY | + PCI_COMMAND_MASTER}}, +#endif + { } +}; + +struct pci_controller hose = { + config_table: pci_sandpoint_config_table, + fixup_irq: pci_mousse_fixup_irq, +}; + +void pci_init(void) +{ + pci_mpc824x_init(&hose); +} |