Initial revision

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);
+}