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authorwdenk <wdenk>2002-11-03 00:24:07 +0000
committerwdenk <wdenk>2002-11-03 00:24:07 +0000
commitc609719b8d1b2dca590e0ed499016d041203e403 (patch)
tree7ea1755d80903ff972f312a249eb856061d40e15 /board/mousse
parent5b1d713721c3ea02549940133f09236783dda1f9 (diff)
downloadu-boot-linaro-stable-c609719b8d1b2dca590e0ed499016d041203e403.tar.gz
Initial revision
Diffstat (limited to 'board/mousse')
-rw-r--r--board/mousse/pci.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/board/mousse/pci.c b/board/mousse/pci.c
new file mode 100644
index 000000000..89ca235d1
--- /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);
+}