--- /dev/null
+/*
+ * (C) Copyright 2001
+ * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/ppc4xx.h>
+#include <asm/processor.h>
+#include <pci.h>
+
+
+u_long pci9054_iobase;
+
+
+#define PCI_PRIMARY_CAR (0x500000dc) /* PCI config address reg */
+#define PCI_PRIMARY_CDR (0x80000000) /* PCI config data reg */
+
+
+/*-----------------------------------------------------------------------------+
+| Subroutine: pci9054_read_config_dword
+| Description: Read a PCI configuration register
+| Inputs:
+| hose PCI Controller
+| dev PCI Bus+Device+Function number
+| offset Configuration register number
+| value Address of the configuration register value
+| Return value:
+| 0 Successful
++-----------------------------------------------------------------------------*/
+int pci9054_read_config_dword(struct pci_controller *hose,
+ pci_dev_t dev, int offset, u32* value)
+{
+ unsigned long conAdrVal;
+ unsigned long val;
+
+ /* generate coded value for CON_ADR register */
+ conAdrVal = dev | (offset & 0xfc) | 0x80000000;
+
+ /* Load the CON_ADR (CAR) value first, then read from CON_DATA (CDR) */
+ *(unsigned long *)PCI_PRIMARY_CAR = conAdrVal;
+
+ /* Note: *pResult comes back as -1 if machine check happened */
+ val = in32r(PCI_PRIMARY_CDR);
+
+ *value = (unsigned long) val;
+
+ out32r(PCI_PRIMARY_CAR, 0);
+
+ if ((*(unsigned long *)0x50000304) & 0x60000000)
+ {
+ /* clear pci master/target abort bits */
+ *(unsigned long *)0x50000304 = *(unsigned long *)0x50000304;
+ }
+
+ return 0;
+}
+
+/*-----------------------------------------------------------------------------+
+| Subroutine: pci9054_write_config_dword
+| Description: Write a PCI configuration register.
+| Inputs:
+| hose PCI Controller
+| dev PCI Bus+Device+Function number
+| offset Configuration register number
+| Value Configuration register value
+| Return value:
+| 0 Successful
+| Updated for pass2 errata #6. Need to disable interrupts and clear the
+| PCICFGADR reg after writing the PCICFGDATA reg.
++-----------------------------------------------------------------------------*/
+int pci9054_write_config_dword(struct pci_controller *hose,
+ pci_dev_t dev, int offset, u32 value)
+{
+ unsigned long conAdrVal;
+
+ conAdrVal = dev | (offset & 0xfc) | 0x80000000;
+
+ *(unsigned long *)PCI_PRIMARY_CAR = conAdrVal;
+
+ out32r(PCI_PRIMARY_CDR, value);
+
+ out32r(PCI_PRIMARY_CAR, 0);
+
+ /* clear pci master/target abort bits */
+ *(unsigned long *)0x50000304 = *(unsigned long *)0x50000304;
+
+ return (0);
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+#ifdef CONFIG_DASA_SIM
+static void pci_dasa_sim_config_pci9054(struct pci_controller *hose, pci_dev_t dev,
+ struct pci_config_table *_)
+{
+ unsigned int iobase;
+ unsigned short status = 0;
+ unsigned char timer;
+
+ /*
+ * Configure PLX PCI9054
+ */
+ pci_read_config_word(CONFIG_SYS_PCI9054_DEV_FN, PCI_COMMAND, &status);
+ status |= PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
+ pci_write_config_word(CONFIG_SYS_PCI9054_DEV_FN, PCI_COMMAND, status);
+
+ /* Check the latency timer for values >= 0x60.
+ */
+ pci_read_config_byte(CONFIG_SYS_PCI9054_DEV_FN, PCI_LATENCY_TIMER, &timer);
+ if (timer < 0x60)
+ {
+ pci_write_config_byte(CONFIG_SYS_PCI9054_DEV_FN, PCI_LATENCY_TIMER, 0x60);
+ }
+
+ /* Set I/O base register.
+ */
+ pci_write_config_dword(CONFIG_SYS_PCI9054_DEV_FN, PCI_BASE_ADDRESS_0, CONFIG_SYS_PCI9054_IOBASE);
+ pci_read_config_dword(CONFIG_SYS_PCI9054_DEV_FN, PCI_BASE_ADDRESS_0, &iobase);
+
+ pci9054_iobase = pci_mem_to_phys(CONFIG_SYS_PCI9054_DEV_FN, iobase & PCI_BASE_ADDRESS_MEM_MASK);
+
+ if (pci9054_iobase == 0xffffffff)
+ {
+ printf("Error: Can not set I/O base register.\n");
+ return;
+ }
+}
+#endif
+
+static struct pci_config_table pci9054_config_table[] = {
+#ifndef CONFIG_PCI_PNP
+ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+ PCI_BUS(CONFIG_SYS_ETH_DEV_FN), PCI_DEV(CONFIG_SYS_ETH_DEV_FN), PCI_FUNC(CONFIG_SYS_ETH_DEV_FN),
+ pci_cfgfunc_config_device, { CONFIG_SYS_ETH_IOBASE,
+ CONFIG_SYS_ETH_IOBASE,
+ PCI_COMMAND_IO | PCI_COMMAND_MASTER }},
+#ifdef CONFIG_DASA_SIM
+ { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
+ PCI_BUS(CONFIG_SYS_PCI9054_DEV_FN), PCI_DEV(CONFIG_SYS_PCI9054_DEV_FN), PCI_FUNC(CONFIG_SYS_PCI9054_DEV_FN),
+ pci_dasa_sim_config_pci9054 },
+#endif
+#endif
+ { }
+};
+
+static struct pci_controller pci9054_hose = {
+ config_table: pci9054_config_table,
+};
+
+void pci_init_board(void)
+{
+ struct pci_controller *hose = &pci9054_hose;
+
+ /*
+ * Register the hose
+ */
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+
+ /* System memory space */
+ pci_set_region(hose->regions + 0,
+ 0x00000000, 0x00000000, 0x01000000,
+ PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+
+ /* PCI Memory space */
+ pci_set_region(hose->regions + 1,
+ 0x00000000, 0xc0000000, 0x10000000,
+ PCI_REGION_MEM);
+
+ pci_set_ops(hose,
+ pci_hose_read_config_byte_via_dword,
+ pci_hose_read_config_word_via_dword,
+ pci9054_read_config_dword,
+ pci_hose_write_config_byte_via_dword,
+ pci_hose_write_config_word_via_dword,
+ pci9054_write_config_dword);
+
+ hose->region_count = 2;
+
+ pci_register_hose(hose);
+
+ hose->last_busno = pci_hose_scan(hose);
+}
Code Review / kvmfornfv.git / blobdiff