pci.c 2.1 KB

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