patch-2.4.19 linux-2.4.19/arch/mips/ddb5476/pci.c

• Lines: 500
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/arch/mips/ddb5476/pci.c
• Orig date: Sun Sep 9 10:43:01 2001

diff -urN linux-2.4.18/arch/mips/ddb5476/pci.c linux-2.4.19/arch/mips/ddb5476/pci.c
@@ -1,499 +0,0 @@
-/*
- *  arch/mips/ddb5476/pci.c -- NEC DDB Vrc-5074 PCI access routines
- *
- *  Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
- *                     Albert Dorofeev <albert@sonycom.com>
- *                     Sony Software Development Center Europe (SDCE), Brussels
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-
-#include <asm-mips/nile4.h>
-
-static u32 nile4_pre_pci_access0(int slot_num)
-{
-	u32 pci_addr = 0;
-	u32 virt_addr = NILE4_PCI_CFG_BASE;
-
-	/* work around the bug for Vrc5476 */
-	if (slot_num == 13)
-		return NILE4_BASE + NILE4_PCI_BASE;
-
-	/* Set window 1 address 08000000 - 32 bit - 128 MB (PCI config space) */
-	nile4_set_pdar(NILE4_PCIW1, PHYSADDR(virt_addr), 0x08000000, 32, 0,
-		       0);
-
-	// [jsun] we start scanning from addr:10, 
-	// with 128M we can go up to addr:26 (slot 16)
-	if (slot_num <= 16) {
-		virt_addr += 0x00000400 << slot_num;
-	} else {
-		/* for high slot, we have to set higher PCI base addr */
-		pci_addr = 0x00000400 << slot_num;
-	}
-	nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_CFG, pci_addr);
-	return virt_addr;
-}
-
-static void nile4_post_pci_access0(void)
-{
-	/*
-	 * Set window 1 back to address 08000000 - 32 bit - 128 MB
-	 * (PCI IO space)
-	 */
-	nile4_set_pdar(NILE4_PCIW1, PHYSADDR(NILE4_PCI_MEM_BASE),
-		       0x08000000, 32, 1, 1);
-	// nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_MEM, 0);
-	nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_MEM, 0x08000000);
-}
-
-
-static int nile4_pci_read_config_dword(struct pci_dev *dev,
-				       int where, u32 * val)
-{
-	int slot_num, func_num;
-	u32 base;
-	u32 addr;
-
-	/*
-	 *  Do we need to generate type 1 configure transaction?
-	 */
-	if (dev->bus->number) {
-		/* FIXME - not working yet */
-		return PCIBIOS_FUNC_NOT_SUPPORTED;
-
-		/*
-		 * the largest type 1 configuration addr is 16M, < 256M
-		 * config space
-		 */
-		slot_num = 0;
-		addr =
-		    (dev->bus->number << 16) | (dev->devfn <
-						8) | where | 1;
-	} else {
-		slot_num = PCI_SLOT(dev->devfn);
-		func_num = PCI_FUNC(dev->devfn);
-		addr = (func_num << 8) + where;
-	}
-
-	base = nile4_pre_pci_access0(slot_num);
-	*val = *(volatile u32 *) (base + addr);
-	nile4_post_pci_access0();
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int nile4_pci_write_config_dword(struct pci_dev *dev, int where,
-					u32 val)
-{
-	int slot_num, func_num;
-	u32 base;
-	u32 addr;
-
-	/*
-	 *  Do we need to generate type 1 configure transaction?
-	 */
-	if (dev->bus->number) {
-		/* FIXME - not working yet */
-		return PCIBIOS_FUNC_NOT_SUPPORTED;
-
-		/* the largest type 1 configuration addr is 16M, < 256M config space */
-		slot_num = 0;
-		addr =
-		    (dev->bus->number << 16) | (dev->devfn <
-						8) | where | 1;
-	} else {
-		slot_num = PCI_SLOT(dev->devfn);
-		func_num = PCI_FUNC(dev->devfn);
-		addr = (func_num << 8) + where;
-	}
-
-	base = nile4_pre_pci_access0(slot_num);
-	*(volatile u32 *) (base + addr) = val;
-	nile4_post_pci_access0();
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int nile4_pci_read_config_word(struct pci_dev *dev, int where,
-				      u16 * val)
-{
-	int status;
-	u32 result;
-
-	status = nile4_pci_read_config_dword(dev, where & ~3, &result);
-	if (status != PCIBIOS_SUCCESSFUL)
-		return status;
-	if (where & 2)
-		result >>= 16;
-	*val = result & 0xffff;
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int nile4_pci_read_config_byte(struct pci_dev *dev, int where,
-				      u8 * val)
-{
-	int status;
-	u32 result;
-
-	status = nile4_pci_read_config_dword(dev, where & ~3, &result);
-	if (status != PCIBIOS_SUCCESSFUL)
-		return status;
-	if (where & 1)
-		result >>= 8;
-	if (where & 2)
-		result >>= 16;
-	*val = result & 0xff;
-	return PCIBIOS_SUCCESSFUL;
-}
-
-static int nile4_pci_write_config_word(struct pci_dev *dev, int where,
-				       u16 val)
-{
-	int status, shift = 0;
-	u32 result;
-
-	status = nile4_pci_read_config_dword(dev, where & ~3, &result);
-	if (status != PCIBIOS_SUCCESSFUL)
-		return status;
-	if (where & 2)
-		shift += 16;
-	result &= ~(0xffff << shift);
-	result |= val << shift;
-	return nile4_pci_write_config_dword(dev, where & ~3, result);
-}
-
-static int nile4_pci_write_config_byte(struct pci_dev *dev, int where,
-				       u8 val)
-{
-	int status, shift = 0;
-	u32 result;
-
-	status = nile4_pci_read_config_dword(dev, where & ~3, &result);
-	if (status != PCIBIOS_SUCCESSFUL)
-		return status;
-	if (where & 2)
-		shift += 16;
-	if (where & 1)
-		shift += 8;
-	result &= ~(0xff << shift);
-	result |= val << shift;
-	return nile4_pci_write_config_dword(dev, where & ~3, result);
-}
-
-struct pci_ops nile4_pci_ops = {
-	nile4_pci_read_config_byte,
-	nile4_pci_read_config_word,
-	nile4_pci_read_config_dword,
-	nile4_pci_write_config_byte,
-	nile4_pci_write_config_word,
-	nile4_pci_write_config_dword
-};
-
-struct {
-	struct resource ram;
-	struct resource flash;
-	struct resource isa_io;
-	struct resource pci_io;
-	struct resource isa_mem;
-	struct resource pci_mem;
-	struct resource nile4;
-	struct resource boot;
-} ddb5476_resources = {
-	// { "RAM", 0x00000000, 0x03ffffff, IORESOURCE_MEM | PCI_BASE_ADDRESS_MEM_TYPE_64 },
-	{
-	"RAM", 0x00000000, 0x03ffffff, IORESOURCE_MEM}, {
-	"Flash ROM", 0x04000000, 0x043fffff}, {
-	"Nile4 ISA I/O", 0x06000000, 0x060fffff}, {
-	"Nile4 PCI I/O", 0x06100000, 0x07ffffff}, {
-	"Nile4 ISA mem", 0x08000000, 0x08ffffff, IORESOURCE_MEM}, {
-	"Nile4 PCI mem", 0x09000000, 0x0fffffff, IORESOURCE_MEM},
-	    // { "Nile4 ctrl", 0x1fa00000, 0x1fbfffff, IORESOURCE_MEM | PCI_BASE_ADDRESS_MEM_TYPE_64 },
-	{
-	"Nile4 ctrl", 0x1fa00000, 0x1fbfffff, IORESOURCE_MEM}, {
-	"Boot ROM", 0x1fc00000, 0x1fffffff}
-};
-
-struct resource M5229_resources[5] = {
-	{"M5229 BAR0", 0x1f0, 0x1f3, IORESOURCE_IO},
-	{"M5229 BAR1", 0x3f4, 0x3f7, IORESOURCE_IO},
-	{"M5229 BAR2", 0x170, 0x173, IORESOURCE_IO},
-	{"M5229 BAR3", 0x374, 0x377, IORESOURCE_IO},
-	{"M5229 BAR4", 0xf000, 0xf00f, IORESOURCE_IO}
-};
-
-static void __init ddb5476_pci_fixup(void)
-{
-	struct pci_dev *dev;
-
-	pci_for_each_dev(dev) {
-		if (dev->vendor == PCI_VENDOR_ID_NEC &&
-		    dev->device == PCI_DEVICE_ID_NEC_VRC5476) {
-			/*
-			 * The first 64-bit PCI base register should point to
-			 * the Nile4 control registers. Unfortunately this
-			 * isn't the case, so we fix it ourselves. This allows
-			 * the serial driver to find the UART.
-			 */
-			dev->resource[0] = ddb5476_resources.nile4;
-			request_resource(&iomem_resource,
-					 &dev->resource[0]);
-			/*
-			 * The second 64-bit PCI base register points to the
-			 * first memory bank. Unfortunately the address is
-			 * wrong, so we fix it (again).
-			 */
-
-			/* [jsun] We cannot request the resource anymore,
-			 * because kernel/setup.c has already reserved "System 
-			 * RAM" resource at the same spot.  
-			 * The fundamental problem here is that PCI host 
-			 * controller should not put system RAM mapping in BAR
-			 * and make subject to PCI resource assignement.
-			 * Current fix is a total hack.  We set parent to 1 so
-                         * so that PCI resource assignement code is fooled to 
-                         * think the resource is assigned, and will not attempt
-                         * to mess with it.
-			 */
-			dev->resource[2] = ddb5476_resources.ram;
-			if (request_resource(&iomem_resource,
-			                     &dev->resource[2]) ) {
-				dev->resource[2].parent = 0x1;
-                        }
-
-		} else if (dev->vendor == PCI_VENDOR_ID_AL
-			   && dev->device == PCI_DEVICE_ID_AL_M7101) {
-			/*
-			 * It's nice to have the LEDs on the GPIO pins
-			 * available for debugging
-			 */
-			extern struct pci_dev *pci_pmu;
-			u8 t8;
-
-			pci_pmu = dev;	/* for LEDs D2 and D3 */
-			/* Program the lines for LEDs D2 and D3 to output */
-			nile4_pci_read_config_byte(dev, 0x7d, &t8);
-			t8 |= 0xc0;
-			nile4_pci_write_config_byte(dev, 0x7d, t8);
-			/* Turn LEDs D2 and D3 off */
-			nile4_pci_read_config_byte(dev, 0x7e, &t8);
-			t8 |= 0xc0;
-			nile4_pci_write_config_byte(dev, 0x7e, t8);
-		} else if (dev->vendor == PCI_VENDOR_ID_AL &&
-			   dev->device == 0x5229) {
-			int i;
-			for (i = 0; i < 5; i++) {
-				dev->resource[i] = M5229_resources[i];
-				request_resource(&ioport_resource,
-						 &dev->resource[i]);
-			}
-		}
-	}
-}
-
-static void __init pcibios_fixup_irqs(void)
-{
-	struct pci_dev *dev;
-	int slot_num;
-
-	pci_for_each_dev(dev) {
-		slot_num = PCI_SLOT(dev->devfn);
-		switch (slot_num) {
-		case 3:	/* re-programmed to USB */
-			dev->irq = 9;	/* hard-coded; see irq.c */
-			break;
-		case 4:	/* re-programmed to PMU */
-			dev->irq = 10;	/* hard-coded; see irq.c */
-			break;
-		case 6:	/* on-board pci-pci bridge */
-			dev->irq = 0xff;
-			break;
-		case 7:	/* on-board ether */
-			dev->irq = nile4_to_irq(NILE4_INT_INTB);
-			break;
-		case 8:	/* ISA-PCI bridge  */
-			dev->irq = nile4_to_irq(NILE4_INT_INTC);
-			break;
-		case 9:	/* ext slot #3 */
-			dev->irq = nile4_to_irq(NILE4_INT_INTD);
-			break;
-		case 10:	/* ext slot #4 */
-			dev->irq = nile4_to_irq(NILE4_INT_INTA);
-			break;
-		case 13:	/* Vrc5476 */
-			dev->irq = 0xff;
-			break;
-		case 14:	/* HD controller, M5229 */
-			dev->irq = 14;
-			break;
-		default:
-			printk
-			    ("JSUN : in pcibios_fixup_irqs - unkown slot %d\n",
-			     slot_num);
-			panic
-			    ("JSUN : in pcibios_fixup_irqs - unkown slot.\n");
-		}
-	}
-}
-
-void __init pcibios_init(void)
-{
-	printk("PCI: Emulate bios initialization \n");
-	/* [jsun] we need to set BAR0 so that SDRAM 0 appears at 0x0 in PCI */
-	*(long *) (NILE4_BASE + NILE4_BAR0) = 0x8;
-
-	printk("PCI: Probing PCI hardware\n");
-	ioport_resource.end = 0x1ffffff;	/*  32 MB */
-	iomem_resource.end = 0x1fffffff;	/* 512 MB */
-
-	/* `ram' and `nile4' are requested through the Nile4 pci_dev */
-	request_resource(&iomem_resource, &ddb5476_resources.flash);
-	request_resource(&iomem_resource, &ddb5476_resources.isa_io);
-	request_resource(&iomem_resource, &ddb5476_resources.pci_io);
-	request_resource(&iomem_resource, &ddb5476_resources.isa_mem);
-	request_resource(&iomem_resource, &ddb5476_resources.pci_mem);
-	request_resource(&iomem_resource, &ddb5476_resources.boot);
-
-	pci_scan_bus(0, &nile4_pci_ops, NULL);
-	ddb5476_pci_fixup();
-	pci_assign_unassigned_resources();
-	pcibios_fixup_irqs();
-}
-
-void __init pcibios_fixup_bus(struct pci_bus *bus)
-{
-	/* [jsun] we don't know how to fix sub-buses yet */
-	if (bus->number == 0) {
-		bus->resource[1] = &ddb5476_resources.pci_mem;
-	}
-}
-
-char *pcibios_setup(char *str)
-{
-	return str;
-}
-
-void __init pcibios_update_irq(struct pci_dev *dev, int irq)
-{
-	pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
-void __init pcibios_fixup_pbus_ranges(struct pci_bus *bus,
-				      struct pbus_set_ranges_data *ranges)
-{
-	/*
-	 * our caller figure out range by going through the dev structures.  
-	 * I guess this is the place to fix things up if the bus is using a 
-	 * different view of the addressing space.
-	 */
-
-#if 0	/*  original DDB5074 code */
-	   if (bus->number == 0) {
-	   ranges->io_start -= bus->resource[0]->start;
-	   ranges->io_end -= bus->resource[0]->start;
-	   ranges->mem_start -= bus->resource[1]->start;
-	   ranges->mem_end -= bus->resource[1]->start;
-	   }
-#endif
-}
-
-int pcibios_enable_resources(struct pci_dev *dev)
-{
-	u16 cmd, old_cmd;
-	int idx;
-	struct resource *r;
-
-	/*
-	 *  Don't touch the Nile 4
-	 */
-	if (dev->vendor == PCI_VENDOR_ID_NEC &&
-	    dev->device == PCI_DEVICE_ID_NEC_VRC5476) return 0;
-
-	pci_read_config_word(dev, PCI_COMMAND, &cmd);
-	old_cmd = cmd;
-	for (idx = 0; idx < 6; idx++) {
-		r = &dev->resource[idx];
-		if (!r->start && r->end) {
-			printk(KERN_ERR "PCI: Device %s not available because "
-			       "of resource collisions\n", dev->slot_name);
-			return -EINVAL;
-		}
-		if (r->flags & IORESOURCE_IO)
-			cmd |= PCI_COMMAND_IO;
-		if (r->flags & IORESOURCE_MEM)
-			cmd |= PCI_COMMAND_MEMORY;
-	}
-	if (cmd != old_cmd) {
-		printk("PCI: Enabling device %s (%04x -> %04x)\n",
-		       dev->slot_name, old_cmd, cmd);
-		pci_write_config_word(dev, PCI_COMMAND, cmd);
-	}
-	return 0;
-}
-
-int pcibios_enable_device(struct pci_dev *dev)
-{
-	return pcibios_enable_resources(dev);
-}
-
-void pcibios_update_resource(struct pci_dev *dev, struct resource *root,
-			     struct resource *res, int resource)
-{
-	u32 new, check;
-	int reg;
-
-	new = res->start | (res->flags & PCI_REGION_FLAG_MASK);
-	if (resource < 6) {
-		reg = PCI_BASE_ADDRESS_0 + 4 * resource;
-	} else if (resource == PCI_ROM_RESOURCE) {
-		res->flags |= PCI_ROM_ADDRESS_ENABLE;
-		reg = dev->rom_base_reg;
-	} else {
-		/*
-		 * Somebody might have asked allocation of a non-standard
-		 * resource
-		 */
-		return;
-	}
-
-	pci_write_config_dword(dev, reg, new);
-	pci_read_config_dword(dev, reg, &check);
-	if ((new ^ check) &
-	    ((new & PCI_BASE_ADDRESS_SPACE_IO) ? PCI_BASE_ADDRESS_IO_MASK :
-	     PCI_BASE_ADDRESS_MEM_MASK)) {
-		printk(KERN_ERR "PCI: Error while updating region "
-		       "%s/%d (%08x != %08x)\n", dev->slot_name, resource,
-		       new, check);
-	}
-}
-
-void pcibios_align_resource(void *data, struct resource *res,
-			    unsigned long size)
-{
-	struct pci_dev *dev = data;
-
-	if (res->flags & IORESOURCE_IO) {
-		unsigned long start = res->start;
-
-		/* We need to avoid collisions with `mirrored' VGA ports
-		   and other strange ISA hardware, so we always want the
-		   addresses kilobyte aligned.  */
-		if (size > 0x100) {
-			printk(KERN_ERR "PCI: I/O Region %s/%d too large"
-			       " (%ld bytes)\n", dev->slot_name,
-			       dev->resource - res, size);
-		}
-
-		start = (start + 1024 - 1) & ~(1024 - 1);
-		res->start = start;
-	}
-}
-
-unsigned __init int pcibios_assign_all_busses(void)
-{
-	return 1;
-}
-
-struct pci_fixup pcibios_fixups[] = { {0} };