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-rw-r--r--arch/sh/boards/overdrive/galileo.c587
1 files changed, 0 insertions, 587 deletions
diff --git a/arch/sh/boards/overdrive/galileo.c b/arch/sh/boards/overdrive/galileo.c
deleted file mode 100644
index 29e48971bba..00000000000
--- a/arch/sh/boards/overdrive/galileo.c
+++ /dev/null
@@ -1,587 +0,0 @@
-/*
- * Copyright (C) 2000 David J. Mckay (david.mckay@st.com)
- *
- * May be copied or modified under the terms of the GNU General Public
- * License. See linux/COPYING for more information.
- *
- * This file contains the PCI routines required for the Galileo GT6411
- * PCI bridge as used on the Orion and Overdrive boards.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-#include <linux/init.h>
-#include <linux/errno.h>
-#include <linux/pci.h>
-#include <linux/delay.h>
-#include <linux/types.h>
-#include <linux/ioport.h>
-
-#include <asm/overdrive/overdrive.h>
-#include <asm/overdrive/gt64111.h>
-
-
-/* After boot, we shift the Galileo registers so that they appear
- * in BANK6, along with IO space. This means we can have one contingous
- * lump of PCI address space without these registers appearing in the
- * middle of them
- */
-
-#define GT64111_BASE_ADDRESS 0xbb000000
-#define GT64111_IO_BASE_ADDRESS 0x1000
-/* The GT64111 registers appear at this address to the SH4 after reset */
-#define RESET_GT64111_BASE_ADDRESS 0xb4000000
-
-/* Macros used to access the Galileo registers */
-#define RESET_GT64111_REG(x) (RESET_GT64111_BASE_ADDRESS+x)
-#define GT64111_REG(x) (GT64111_BASE_ADDRESS+x)
-
-#define RESET_GT_WRITE(x,v) writel((v),RESET_GT64111_REG(x))
-
-#define RESET_GT_READ(x) readl(RESET_GT64111_REG(x))
-
-#define GT_WRITE(x,v) writel((v),GT64111_REG(x))
-#define GT_WRITE_BYTE(x,v) writeb((v),GT64111_REG(x))
-#define GT_WRITE_SHORT(x,v) writew((v),GT64111_REG(x))
-
-#define GT_READ(x) readl(GT64111_REG(x))
-#define GT_READ_BYTE(x) readb(GT64111_REG(x))
-#define GT_READ_SHORT(x) readw(GT64111_REG(x))
-
-
-/* Where the various SH banks start at */
-#define SH_BANK4_ADR 0xb0000000
-#define SH_BANK5_ADR 0xb4000000
-#define SH_BANK6_ADR 0xb8000000
-
-/* Masks out everything but lines 28,27,26 */
-#define BANK_SELECT_MASK 0x1c000000
-
-#define SH4_TO_BANK(x) ( (x) & BANK_SELECT_MASK)
-
-/*
- * Masks used for address conversaion. Bank 6 is used for IO and
- * has all the address bits zeroed by the FPGA. Special case this
- */
-#define MEMORY_BANK_MASK 0x1fffffff
-#define IO_BANK_MASK 0x03ffffff
-
-/* Mark bank 6 as the bank used for IO. You can change this in the FPGA code
- * if you want
- */
-#define IO_BANK_ADR PCI_GTIO_BASE
-
-/* Will select the correct mask to apply depending on the SH$ address */
-#define SELECT_BANK_MASK(x) \
- ( (SH4_TO_BANK(x)==SH4_TO_BANK(IO_BANK_ADR)) ? IO_BANK_MASK : MEMORY_BANK_MASK)
-
-/* Converts between PCI space and P2 region */
-#define SH4_TO_PCI(x) ((x)&SELECT_BANK_MASK(x))
-
-/* Various macros for figuring out what to stick in the Galileo registers.
- * You *really* don't want to figure this stuff out by hand, you always get
- * it wrong
- */
-#define GT_MEM_LO_ADR(x) ((((unsigned)((x)&SELECT_BANK_MASK(x)))>>21)&0x7ff)
-#define GT_MEM_HI_ADR(x) ((((unsigned)((x)&SELECT_BANK_MASK(x)))>>21)&0x7f)
-#define GT_MEM_SUB_ADR(x) ((((unsigned)((x)&SELECT_BANK_MASK(x)))>>20)&0xff)
-
-#define PROGRAM_HI_LO(block,a,s) \
- GT_WRITE(block##_LO_DEC_ADR,GT_MEM_LO_ADR(a));\
- GT_WRITE(block##_HI_DEC_ADR,GT_MEM_HI_ADR(a+s-1))
-
-#define PROGRAM_SUB_HI_LO(block,a,s) \
- GT_WRITE(block##_LO_DEC_ADR,GT_MEM_SUB_ADR(a));\
- GT_WRITE(block##_HI_DEC_ADR,GT_MEM_SUB_ADR(a+s-1))
-
-/* We need to set the size, and the offset register */
-
-#define GT_BAR_MASK(x) ((x)&~0xfff)
-
-/* Macro to set up the BAR in the Galileo. Essentially used for the DRAM */
-#define PROGRAM_GT_BAR(block,a,s) \
- GT_WRITE(PCI_##block##_BANK_SIZE,GT_BAR_MASK((s-1)));\
- write_config_to_galileo(PCI_CONFIG_##block##_BASE_ADR,\
- GT_BAR_MASK(a))
-
-#define DISABLE_GT_BAR(block) \
- GT_WRITE(PCI_##block##_BANK_SIZE,0),\
- GT_CONFIG_WRITE(PCI_CONFIG_##block##_BASE_ADR,\
- 0x80000000)
-
-/* Macros to disable things we are not going to use */
-#define DISABLE_DECODE(x) GT_WRITE(x##_LO_DEC_ADR,0x7ff);\
- GT_WRITE(x##_HI_DEC_ADR,0x00)
-
-#define DISABLE_SUB_DECODE(x) GT_WRITE(x##_LO_DEC_ADR,0xff);\
- GT_WRITE(x##_HI_DEC_ADR,0x00)
-
-static void __init reset_pci(void)
-{
- /* Set RESET_PCI bit high */
- writeb(readb(OVERDRIVE_CTRL) | ENABLE_PCI_BIT, OVERDRIVE_CTRL);
- udelay(250);
-
- /* Set RESET_PCI bit low */
- writeb(readb(OVERDRIVE_CTRL) & RESET_PCI_MASK, OVERDRIVE_CTRL);
- udelay(250);
-
- writeb(readb(OVERDRIVE_CTRL) | ENABLE_PCI_BIT, OVERDRIVE_CTRL);
- udelay(250);
-}
-
-static int write_config_to_galileo(int where, u32 val);
-#define GT_CONFIG_WRITE(where,val) write_config_to_galileo(where,val)
-
-#define ENABLE_PCI_DRAM
-
-
-#ifdef TEST_DRAM
-/* Test function to check out if the PCI DRAM is working OK */
-static int /* __init */ test_dram(unsigned *base, unsigned size)
-{
- unsigned *p = base;
- unsigned *end = (unsigned *) (((unsigned) base) + size);
- unsigned w;
-
- for (p = base; p < end; p++) {
- *p = 0xffffffff;
- if (*p != 0xffffffff) {
- printk("AAARGH -write failed!!! at %p is %x\n", p,
- *p);
- return 0;
- }
- *p = 0x0;
- if (*p != 0x0) {
- printk("AAARGH -write failed!!!\n");
- return 0;
- }
- }
-
- for (p = base; p < end; p++) {
- *p = (unsigned) p;
- if (*p != (unsigned) p) {
- printk("Failed at 0x%p, actually is 0x%x\n", p,
- *p);
- return 0;
- }
- }
-
- for (p = base; p < end; p++) {
- w = ((unsigned) p & 0xffff0000);
- *p = w | (w >> 16);
- }
-
- for (p = base; p < end; p++) {
- w = ((unsigned) p & 0xffff0000);
- w |= (w >> 16);
- if (*p != w) {
- printk
- ("Failed at 0x%p, should be 0x%x actually is 0x%x\n",
- p, w, *p);
- return 0;
- }
- }
-
- return 1;
-}
-#endif
-
-
-/* Function to set up and initialise the galileo. This sets up the BARS,
- * maps the DRAM into the address space etc,etc
- */
-int __init galileo_init(void)
-{
- reset_pci();
-
- /* Now shift the galileo regs into this block */
- RESET_GT_WRITE(INTERNAL_SPACE_DEC,
- GT_MEM_LO_ADR(GT64111_BASE_ADDRESS));
-
- /* Should have a sanity check here, that you can read back at the new
- * address what you just wrote
- */
-
- /* Disable decode for all regions */
- DISABLE_DECODE(RAS10);
- DISABLE_DECODE(RAS32);
- DISABLE_DECODE(CS20);
- DISABLE_DECODE(CS3);
- DISABLE_DECODE(PCI_IO);
- DISABLE_DECODE(PCI_MEM0);
- DISABLE_DECODE(PCI_MEM1);
-
- /* Disable all BARS */
- GT_WRITE(BAR_ENABLE_ADR, 0x1ff);
- DISABLE_GT_BAR(RAS10);
- DISABLE_GT_BAR(RAS32);
- DISABLE_GT_BAR(CS20);
- DISABLE_GT_BAR(CS3);
-
- /* Tell the BAR where the IO registers now are */
- GT_CONFIG_WRITE(PCI_CONFIG_INT_REG_IO_ADR,GT_BAR_MASK(
- (GT64111_IO_BASE_ADDRESS &
- IO_BANK_MASK)));
- /* set up a 112 Mb decode */
- PROGRAM_HI_LO(PCI_MEM0, SH_BANK4_ADR, 112 * 1024 * 1024);
-
- /* Set up a 32 MB io space decode */
- PROGRAM_HI_LO(PCI_IO, IO_BANK_ADR, 32 * 1024 * 1024);
-
-#ifdef ENABLE_PCI_DRAM
- /* Program up the DRAM configuration - there is DRAM only in bank 0 */
- /* Now set up the DRAM decode */
- PROGRAM_HI_LO(RAS10, PCI_DRAM_BASE, PCI_DRAM_SIZE);
- /* And the sub decode */
- PROGRAM_SUB_HI_LO(RAS0, PCI_DRAM_BASE, PCI_DRAM_SIZE);
-
- DISABLE_SUB_DECODE(RAS1);
-
- /* Set refresh rate */
- GT_WRITE(DRAM_BANK0_PARMS, 0x3f);
- GT_WRITE(DRAM_CFG, 0x100);
-
- /* we have to lob off the top bits rememeber!! */
- PROGRAM_GT_BAR(RAS10, SH4_TO_PCI(PCI_DRAM_BASE), PCI_DRAM_SIZE);
-
-#endif
-
- /* We are only interested in decoding RAS10 and the Galileo's internal
- * registers (as IO) on the PCI bus
- */
-#ifdef ENABLE_PCI_DRAM
- GT_WRITE(BAR_ENABLE_ADR, (~((1 << 8) | (1 << 3))) & 0x1ff);
-#else
- GT_WRITE(BAR_ENABLE_ADR, (~(1 << 3)) & 0x1ff);
-#endif
-
- /* Change the class code to host bridge, it actually powers up
- * as a memory controller
- */
- GT_CONFIG_WRITE(8, 0x06000011);
-
- /* Allow the galileo to master the PCI bus */
- GT_CONFIG_WRITE(PCI_COMMAND,
- PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER |
- PCI_COMMAND_IO);
-
-
-#if 0
- printk("Testing PCI DRAM - ");
- if(test_dram(PCI_DRAM_BASE,PCI_DRAM_SIZE)) {
- printk("Passed\n");
- }else {
- printk("FAILED\n");
- }
-#endif
- return 0;
-
-}
-
-
-#define SET_CONFIG_BITS(bus,devfn,where)\
- ((1<<31) | ((bus) << 16) | ((devfn) << 8) | ((where) & ~3))
-
-#define CONFIG_CMD(dev, where) SET_CONFIG_BITS((dev)->bus->number,(dev)->devfn,where)
-
-/* This write to the galileo config registers, unlike the functions below, can
- * be used before the PCI subsystem has started up
- */
-static int __init write_config_to_galileo(int where, u32 val)
-{
- GT_WRITE(PCI_CFG_ADR, SET_CONFIG_BITS(0, 0, where));
-
- GT_WRITE(PCI_CFG_DATA, val);
- return 0;
-}
-
-/* We exclude the galileo and slot 31, the galileo because I don't know how to stop
- * the setup code shagging up the setup I have done on it, and 31 because the whole
- * thing locks up if you try to access that slot (which doesn't exist of course anyway
- */
-
-#define EXCLUDED_DEV(dev) ((dev->bus->number==0) && ((PCI_SLOT(dev->devfn)==0) || (PCI_SLOT(dev->devfn) == 31)))
-
-static int galileo_read_config_byte(struct pci_dev *dev, int where,
- u8 * val)
-{
-
-
- /* I suspect this doesn't work because this drives a special cycle ? */
- if (EXCLUDED_DEV(dev)) {
- *val = 0xff;
- return PCIBIOS_SUCCESSFUL;
- }
- /* Start the config cycle */
- GT_WRITE(PCI_CFG_ADR, CONFIG_CMD(dev, where));
- /* Read back the result */
- *val = GT_READ_BYTE(PCI_CFG_DATA + (where & 3));
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-
-static int galileo_read_config_word(struct pci_dev *dev, int where,
- u16 * val)
-{
-
- if (EXCLUDED_DEV(dev)) {
- *val = 0xffff;
- return PCIBIOS_SUCCESSFUL;
- }
-
- GT_WRITE(PCI_CFG_ADR, CONFIG_CMD(dev, where));
- *val = GT_READ_SHORT(PCI_CFG_DATA + (where & 2));
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-
-static int galileo_read_config_dword(struct pci_dev *dev, int where,
- u32 * val)
-{
- if (EXCLUDED_DEV(dev)) {
- *val = 0xffffffff;
- return PCIBIOS_SUCCESSFUL;
- }
-
- GT_WRITE(PCI_CFG_ADR, CONFIG_CMD(dev, where));
- *val = GT_READ(PCI_CFG_DATA);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int galileo_write_config_byte(struct pci_dev *dev, int where,
- u8 val)
-{
- GT_WRITE(PCI_CFG_ADR, CONFIG_CMD(dev, where));
-
- GT_WRITE_BYTE(PCI_CFG_DATA + (where & 3), val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-
-static int galileo_write_config_word(struct pci_dev *dev, int where,
- u16 val)
-{
- GT_WRITE(PCI_CFG_ADR, CONFIG_CMD(dev, where));
-
- GT_WRITE_SHORT(PCI_CFG_DATA + (where & 2), val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int galileo_write_config_dword(struct pci_dev *dev, int where,
- u32 val)
-{
- GT_WRITE(PCI_CFG_ADR, CONFIG_CMD(dev, where));
-
- GT_WRITE(PCI_CFG_DATA, val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops pci_config_ops = {
- galileo_read_config_byte,
- galileo_read_config_word,
- galileo_read_config_dword,
- galileo_write_config_byte,
- galileo_write_config_word,
- galileo_write_config_dword
-};
-
-
-/* Everything hangs off this */
-static struct pci_bus *pci_root_bus;
-
-
-static u8 __init no_swizzle(struct pci_dev *dev, u8 * pin)
-{
- return PCI_SLOT(dev->devfn);
-}
-
-static int __init map_od_irq(struct pci_dev *dev, u8 slot, u8 pin)
-{
- /* Slot 1: Galileo
- * Slot 2: PCI Slot 1
- * Slot 3: PCI Slot 2
- * Slot 4: ESS
- */
- switch (slot) {
- case 2:
- return OVERDRIVE_PCI_IRQ1;
- case 3:
- /* Note this assumes you have a hacked card in slot 2 */
- return OVERDRIVE_PCI_IRQ2;
- case 4:
- return OVERDRIVE_ESS_IRQ;
- default:
- /* printk("PCI: Unexpected IRQ mapping request for slot %d\n", slot); */
- return -1;
- }
-}
-
-
-
-void __init
-pcibios_fixup_pbus_ranges(struct pci_bus *bus, struct pbus_set_ranges_data *ranges)
-{
- 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;
-}
-
-static void __init pci_fixup_ide_bases(struct pci_dev *d)
-{
- int i;
-
- /*
- * PCI IDE controllers use non-standard I/O port decoding, respect it.
- */
- if ((d->class >> 8) != PCI_CLASS_STORAGE_IDE)
- return;
- printk("PCI: IDE base address fixup for %s\n", pci_name(d));
- for(i=0; i<4; i++) {
- struct resource *r = &d->resource[i];
- if ((r->start & ~0x80) == 0x374) {
- r->start |= 2;
- r->end = r->start;
- }
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pci_fixup_ide_bases);
-
-void __init pcibios_init(void)
-{
- static struct resource galio,galmem;
-
- /* Allocate the registers used by the Galileo */
- galio.flags = IORESOURCE_IO;
- galio.name = "Galileo GT64011";
- galmem.flags = IORESOURCE_MEM|IORESOURCE_PREFETCH;
- galmem.name = "Galileo GT64011 DRAM";
-
- allocate_resource(&ioport_resource, &galio, 256,
- GT64111_IO_BASE_ADDRESS,GT64111_IO_BASE_ADDRESS+256, 256, NULL, NULL);
- allocate_resource(&iomem_resource, &galmem,PCI_DRAM_SIZE,
- PHYSADDR(PCI_DRAM_BASE), PHYSADDR(PCI_DRAM_BASE)+PCI_DRAM_SIZE,
- PCI_DRAM_SIZE, NULL, NULL);
-
- /* ok, do the scan man */
- pci_root_bus = pci_scan_bus(0, &pci_config_ops, NULL);
-
- pci_assign_unassigned_resources();
- pci_fixup_irqs(no_swizzle, map_od_irq);
-
-#ifdef TEST_DRAM
- printk("Testing PCI DRAM - ");
- if(test_dram(PCI_DRAM_BASE,PCI_DRAM_SIZE)) {
- printk("Passed\n");
- }else {
- printk("FAILED\n");
- }
-#endif
-
-}
-
-char * __init pcibios_setup(char *str)
-{
- return str;
-}
-
-
-
-int pcibios_enable_device(struct pci_dev *dev)
-{
-
- u16 cmd, old_cmd;
- int idx;
- struct resource *r;
-
- 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",
- pci_name(dev));
- 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",
- pci_name(dev), old_cmd, cmd);
- pci_write_config_word(dev, PCI_COMMAND, cmd);
- }
- return 0;
-
-}
-
-/* We should do some optimisation work here I think. Ok for now though */
-void __init pcibios_fixup_bus(struct pci_bus *bus)
-{
-
-}
-
-void pcibios_align_resource(void *data, struct resource *res,
- resource_size_t size)
-{
-}
-
-void __init pcibios_update_resource(struct pci_dev *dev, struct resource *root,
- struct resource *res, int resource)
-{
-
- unsigned long where, size;
- u32 reg;
-
-
- printk("PCI: Assigning %3s %08lx to %s\n",
- res->flags & IORESOURCE_IO ? "IO" : "MEM",
- res->start, dev->name);
-
- where = PCI_BASE_ADDRESS_0 + resource * 4;
- size = res->end - res->start;
-
- pci_read_config_dword(dev, where, &reg);
- reg = (reg & size) | (((u32) (res->start - root->start)) & ~size);
- pci_write_config_dword(dev, where, reg);
-}
-
-
-void __init pcibios_update_irq(struct pci_dev *dev, int irq)
-{
- printk("PCI: Assigning IRQ %02d to %s\n", irq, dev->name);
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
-}
-
-/*
- * If we set up a device for bus mastering, we need to check the latency
- * timer as certain crappy BIOSes forget to set it properly.
- */
-unsigned int pcibios_max_latency = 255;
-
-void pcibios_set_master(struct pci_dev *dev)
-{
- u8 lat;
- pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
- if (lat < 16)
- lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency;
- else if (lat > pcibios_max_latency)
- lat = pcibios_max_latency;
- else
- return;
- printk("PCI: Setting latency timer of device %s to %d\n", pci_name(dev), lat);
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 12:21:44 +0000