LXR uboot/board/mpl/common/pci.c

   1/*
   2 * SPDX-License-Identifier:     GPL-2.0 IBM-pibs
   3 */
   4/*
   5 * Adapted for PIP405 03.07.01
   6 * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
   7 *
   8 * TODO: Clean-up
   9 */
  10
  11#include <common.h>
  12#include <pci.h>
  13#include "isa.h"
  14
  15#ifdef CONFIG_405GP
  16#ifdef CONFIG_PCI
  17
  18DECLARE_GLOBAL_DATA_PTR;
  19
  20#include "piix4_pci.h"
  21#include "pci_parts.h"
  22
  23void pci_pip405_write_regs(struct pci_controller *hose, pci_dev_t dev,
  24                           struct pci_config_table *entry)
  25{
  26        struct pci_pip405_config_entry *table;
  27        int i;
  28
  29        table = (struct pci_pip405_config_entry*) entry->priv[0];
  30
  31        for (i=0; table[i].width; i++)
  32        {
  33#ifdef DEBUG
  34                printf("Reg 0x%02X Value 0x%08lX Width %02d written\n",
  35                       table[i].index, table[i].val, table[i].width);
  36#endif
  37
  38                switch(table[i].width)
  39                {
  40                case 1: pci_hose_write_config_byte(hose, dev, table[i].index, table[i].val); break;
  41                case 2: pci_hose_write_config_word(hose, dev, table[i].index, table[i].val); break;
  42                case 4: pci_hose_write_config_dword(hose, dev, table[i].index, table[i].val); break;
  43                }
  44        }
  45}
  46
  47
  48static void pci_pip405_fixup_irq(struct pci_controller *hose, pci_dev_t dev)
  49{
  50        unsigned char int_line = 0xff;
  51        unsigned char pin;
  52        /*
  53         * Write pci interrupt line register
  54         */
  55        if(PCI_DEV(dev)==0) /* Device0 = PPC405 -> skip */
  56                return;
  57        pci_hose_read_config_byte(hose, dev, PCI_INTERRUPT_PIN, &pin);
  58        if ((pin == 0) || (pin > 4))
  59            return;
  60
  61        int_line = ((PCI_DEV(dev) + (pin-1) + 10) % 4) + 28;
  62        pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line);
  63#ifdef DEBUG
  64        printf("Fixup IRQ: dev %d (%x) int line %d 0x%x\n",
  65               PCI_DEV(dev),dev,int_line,int_line);
  66#endif
  67}
  68
  69extern void pci_405gp_init(struct pci_controller *hose);
  70
  71
  72static struct pci_controller hose = {
  73  config_table: pci_pip405_config_table,
  74  fixup_irq: pci_pip405_fixup_irq,
  75};
  76
  77
  78void pci_init_board(void)
  79{
  80        /*we want the ptrs to RAM not flash (ie don't use init list)*/
  81        hose.fixup_irq    = pci_pip405_fixup_irq;
  82        hose.config_table = pci_pip405_config_table;
  83#ifdef DEBUG
  84        printf("Init PCI: fixup_irq=%p config_table=%p hose=%p\n",pci_pip405_fixup_irq,pci_pip405_config_table,hose);
  85#endif
  86        pci_405gp_init(&hose);
  87}
  88
  89#endif /* CONFIG_PCI */
  90#endif /* CONFIG_405GP */
  91