/*-----------------------------------------------------------------------------+ * * This source code has been made available to you by IBM on an AS-IS * basis. Anyone receiving this source is licensed under IBM * copyrights to use it in any way he or she deems fit, including * copying it, modifying it, compiling it, and redistributing it either * with or without modifications. No license under IBM patents or * patent applications is to be implied by the copyright license. * * Any user of this software should understand that IBM cannot provide * technical support for this software and will not be responsible for * any consequences resulting from the use of this software. * * Any person who transfers this source code or any derivative work * must include the IBM copyright notice, this paragraph, and the * preceding two paragraphs in the transferred software. * * COPYRIGHT I B M CORPORATION 1995 * LICENSED MATERIAL - PROGRAM PROPERTY OF I B M *-----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------+ * * File Name: 405gp_pci.c * * Function: Initialization code for the 405GP PCI Configuration regs. * * Author: Mark Game * * Change Activity- * * Date Description of Change BY * --------- --------------------- --- * 09-Sep-98 Created MCG * 02-Nov-98 Removed External arbiter selected message JWB * 27-Nov-98 Zero out PTMBAR2 and disable in PTM2MS JWB * 04-Jan-99 Zero out other unused PMM and PTM regs. Change bus scan MCG * from (0 to n) to (1 to n). * 17-May-99 Port to Walnut JWB * 17-Jun-99 Updated for VGA support JWB * 21-Jun-99 Updated to allow SRAM region to be a target from PCI bus JWB * 19-Jul-99 Updated for 405GP pass 1 errata #26 (Low PCI subsequent MCG * target latency timer values are not supported). * Should be fixed in pass 2. * 09-Sep-99 Removed use of PTM2 since the SRAM region no longer needs JWB * to be a PCI target. Zero out PTMBAR2 and disable in PTM2MS. * 10-Dec-99 Updated PCI_Write_CFG_Reg for pass2 errata #6 JWB * 11-Jan-00 Ensure PMMxMAs disabled before setting PMMxLAs. This is not * really required after a reset since PMMxMAs are already * disabled but is a good practice nonetheless. JWB * 12-Jun-01 stefan.roese@esd-electronics.com * - PCI host/adapter handling reworked * 09-Jul-01 stefan.roese@esd-electronics.com * - PCI host now configures from device 0 (not 1) to max_dev, * (host configures itself) * - On CPCI-405 pci base address and size is generated from * SDRAM and FLASH size (CFG regs not used anymore) * - Some minor changes for CPCI-405-A (adapter version) * 14-Sep-01 stefan.roese@esd-electronics.com * - CONFIG_PCI_SCAN_SHOW added to print pci devices upon startup * 28-Sep-01 stefan.roese@esd-electronics.com * - Changed pci master configuration for linux compatibility * (no need for bios_fixup() anymore) * 26-Feb-02 stefan.roese@esd-electronics.com * - Bug fixed in pci configuration (Andrew May) * - Removed pci class code init for CPCI405 board * 15-May-02 stefan.roese@esd-electronics.com * - New vga device handling * 29-May-02 stefan.roese@esd-electronics.com * - PCI class code init added (if defined) *----------------------------------------------------------------------------*/ #include #include #if !defined(CONFIG_440) #include #endif #include #include #ifdef CONFIG_PCI DECLARE_GLOBAL_DATA_PTR; /* * Board-specific pci initialization * Platform code can reimplement pci_pre_init() if needed */ int __pci_pre_init(struct pci_controller *hose) { #if defined (CONFIG_405EP) /* * Enable the internal PCI arbiter by default. * * On 405EP CPUs the internal arbiter can be controlled * by the I2C strapping EEPROM. If you want to do so * or if you want to disable the arbiter pci_pre_init() * must be reimplemented without enabling the arbiter. * The arbiter is enabled in this place because of * compatibility reasons. */ mtdcr(cpc0_pci, mfdcr(cpc0_pci) | CPC0_PCI_ARBIT_EN); #endif /* CONFIG_405EP */ return 1; } int pci_pre_init(struct pci_controller *hose) __attribute__((weak, alias("__pci_pre_init"))); #if defined(CONFIG_405GP) || defined(CONFIG_405EP) #if defined(CONFIG_PMC405) ushort pmc405_pci_subsys_deviceid(void); #endif /*#define DEBUG*/ int __is_pci_host(struct pci_controller *hose) { #if defined(CONFIG_405GP) if (mfdcr(strap) & PSR_PCI_ARBIT_EN) return 1; #elif defined (CONFIG_405EP) if (mfdcr(cpc0_pci) & CPC0_PCI_ARBIT_EN) return 1; #endif return 0; } int is_pci_host(struct pci_controller *hose) __attribute__((weak, alias("__is_pci_host"))); /*-----------------------------------------------------------------------------+ * pci_init. Initializes the 405GP PCI Configuration regs. *-----------------------------------------------------------------------------*/ void pci_405gp_init(struct pci_controller *hose) { int i, reg_num = 0; bd_t *bd = gd->bd; unsigned short temp_short; unsigned long ptmpcila[2] = {CONFIG_SYS_PCI_PTM1PCI, CONFIG_SYS_PCI_PTM2PCI}; #if defined(CONFIG_CPCI405) || defined(CONFIG_PMC405) char *ptmla_str, *ptmms_str; #endif unsigned long ptmla[2] = {CONFIG_SYS_PCI_PTM1LA, CONFIG_SYS_PCI_PTM2LA}; unsigned long ptmms[2] = {CONFIG_SYS_PCI_PTM1MS, CONFIG_SYS_PCI_PTM2MS}; #if defined(CONFIG_PIP405) || defined (CONFIG_MIP405) unsigned long pmmla[3] = {0x80000000, 0xA0000000, 0}; unsigned long pmmma[3] = {0xE0000001, 0xE0000001, 0}; unsigned long pmmpcila[3] = {0x80000000, 0x00000000, 0}; unsigned long pmmpciha[3] = {0x00000000, 0x00000000, 0}; #else unsigned long pmmla[3] = {0x80000000, 0,0}; unsigned long pmmma[3] = {0xC0000001, 0,0}; unsigned long pmmpcila[3] = {0x80000000, 0,0}; unsigned long pmmpciha[3] = {0x00000000, 0,0}; #endif #ifdef CONFIG_PCI_PNP #if (CONFIG_PCI_HOST == PCI_HOST_AUTO) char *s; #endif #endif #if defined(CONFIG_CPCI405) || defined(CONFIG_PMC405) ptmla_str = getenv("ptm1la"); ptmms_str = getenv("ptm1ms"); if(NULL != ptmla_str && NULL != ptmms_str ) { ptmla[0] = simple_strtoul (ptmla_str, NULL, 16); ptmms[0] = simple_strtoul (ptmms_str, NULL, 16); } ptmla_str = getenv("ptm2la"); ptmms_str = getenv("ptm2ms"); if(NULL != ptmla_str && NULL != ptmms_str ) { ptmla[1] = simple_strtoul (ptmla_str, NULL, 16); ptmms[1] = simple_strtoul (ptmms_str, NULL, 16); } #endif /* * Register the hose */ hose->first_busno = 0; hose->last_busno = 0xff; /* ISA/PCI I/O space */ pci_set_region(hose->regions + reg_num++, MIN_PCI_PCI_IOADDR, MIN_PLB_PCI_IOADDR, 0x10000, PCI_REGION_IO); /* PCI I/O space */ pci_set_region(hose->regions + reg_num++, 0x00800000, 0xe8800000, 0x03800000, PCI_REGION_IO); reg_num = 2; /* Memory spaces */ for (i=0; i<2; i++) if (ptmms[i] & 1) { if (!i) hose->pci_fb = hose->regions + reg_num; pci_set_region(hose->regions + reg_num++, ptmpcila[i], ptmla[i], ~(ptmms[i] & 0xfffff000) + 1, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY); } /* PCI memory spaces */ for (i=0; i<3; i++) if (pmmma[i] & 1) { pci_set_region(hose->regions + reg_num++, pmmpcila[i], pmmla[i], ~(pmmma[i] & 0xfffff000) + 1, PCI_REGION_MEM); } hose->region_count = reg_num; pci_setup_indirect(hose, PCICFGADR, PCICFGDATA); if (hose->pci_fb) pciauto_region_init(hose->pci_fb); /* Let board change/modify hose & do initial checks */ if (pci_pre_init (hose) == 0) { printf("PCI: Board-specific initialization failed.\n"); printf("PCI: Configuration aborted.\n"); return; } pci_register_hose(hose); /*--------------------------------------------------------------------------+ * 405GP PCI Master configuration. * Map one 512 MB range of PLB/processor addresses to PCI memory space. * PLB address 0x80000000-0xBFFFFFFF ==> PCI address 0x80000000-0xBFFFFFFF * Use byte reversed out routines to handle endianess. *--------------------------------------------------------------------------*/ out32r(PMM0MA, (pmmma[0]&~0x1)); /* disable, configure PMMxLA, PMMxPCILA first */ out32r(PMM0LA, pmmla[0]); out32r(PMM0PCILA, pmmpcila[0]); out32r(PMM0PCIHA, pmmpciha[0]); out32r(PMM0MA, pmmma[0]); /*--------------------------------------------------------------------------+ * PMM1 is not used. Initialize them to zero. *--------------------------------------------------------------------------*/ out32r(PMM1MA, (pmmma[1]&~0x1)); out32r(PMM1LA, pmmla[1]); out32r(PMM1PCILA, pmmpcila[1]); out32r(PMM1PCIHA, pmmpciha[1]); out32r(PMM1MA, pmmma[1]); /*--------------------------------------------------------------------------+ * PMM2 is not used. Initialize them to zero. *--------------------------------------------------------------------------*/ out32r(PMM2MA, (pmmma[2]&~0x1)); out32r(PMM2LA, pmmla[2]); out32r(PMM2PCILA, pmmpcila[2]); out32r(PMM2PCIHA, pmmpciha[2]); out32r(PMM2MA, pmmma[2]); /*--------------------------------------------------------------------------+ * 405GP PCI Target configuration. (PTM1) * Note: PTM1MS is hardwire enabled but we set the enable bit anyway. *--------------------------------------------------------------------------*/ out32r(PTM1LA, ptmla[0]); /* insert address */ out32r(PTM1MS, ptmms[0]); /* insert size, enable bit is 1 */ pci_write_config_dword(PCIDEVID_405GP, PCI_BASE_ADDRESS_1, ptmpcila[0]); /*--------------------------------------------------------------------------+ * 405GP PCI Target configuration. (PTM2) *--------------------------------------------------------------------------*/ out32r(PTM2LA, ptmla[1]); /* insert address */ pci_write_config_dword(PCIDEVID_405GP, PCI_BASE_ADDRESS_2, ptmpcila[1]); if (ptmms[1] == 0) { out32r(PTM2MS, 0x00000001); /* set enable bit */ pci_write_config_dword(PCIDEVID_405GP, PCI_BASE_ADDRESS_2, 0x00000000); out32r(PTM2MS, 0x00000000); /* disable */ } else { out32r(PTM2MS, ptmms[1]); /* insert size, enable bit is 1 */ } /* * Insert Subsystem Vendor and Device ID */ pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_VENDOR_ID, CONFIG_SYS_PCI_SUBSYS_VENDORID); #ifdef CONFIG_CPCI405 if (is_pci_host(hose)) pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_DEVICEID); else pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_DEVICEID2); #else pci_write_config_word(PCIDEVID_405GP, PCI_SUBSYSTEM_ID, CONFIG_SYS_PCI_SUBSYS_DEVICEID); #endif /* * Insert Class-code */ #ifdef CONFIG_SYS_PCI_CLASSCODE pci_write_config_word(PCIDEVID_405GP, PCI_CLASS_SUB_CODE, CONFIG_SYS_PCI_CLASSCODE); #endif /* CONFIG_SYS_PCI_CLASSCODE */ /*--------------------------------------------------------------------------+ * If PCI speed = 66MHz, set 66MHz capable bit. *--------------------------------------------------------------------------*/ if (bd->bi_pci_busfreq >= 66000000) { pci_read_config_word(PCIDEVID_405GP, PCI_STATUS, &temp_short); pci_write_config_word(PCIDEVID_405GP,PCI_STATUS,(temp_short|PCI_STATUS_66MHZ)); } #if (CONFIG_PCI_HOST != PCI_HOST_ADAPTER) #if (CONFIG_PCI_HOST == PCI_HOST_AUTO) if (is_pci_host(hose) || (((s = getenv("pciscan")) != NULL) && (strcmp(s, "yes") == 0))) #endif { /*--------------------------------------------------------------------------+ * Write the 405GP PCI Configuration regs. * Enable 405GP to be a master on the PCI bus (PMM). * Enable 405GP to act as a PCI memory target (PTM). *--------------------------------------------------------------------------*/ pci_read_config_word(PCIDEVID_405GP, PCI_COMMAND, &temp_short); pci_write_config_word(PCIDEVID_405GP, PCI_COMMAND, temp_short | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); } #endif #if defined(CONFIG_405EP) /* on ppc405ep vendor id is not set */ pci_write_config_word(PCIDEVID_405GP, PCI_VENDOR_ID, 0x1014); /* IBM */ #endif /* * Set HCE bit (Host Configuration Enabled) */ pci_read_config_word(PCIDEVID_405GP, PCIBRDGOPT2, &temp_short); pci_write_config_word(PCIDEVID_405GP, PCIBRDGOPT2, (temp_short | 0x0001)); #ifdef CONFIG_PCI_PNP /*--------------------------------------------------------------------------+ * Scan the PCI bus and configure devices found. *--------------------------------------------------------------------------*/ #if (CONFIG_PCI_HOST == PCI_HOST_AUTO) if (is_pci_host(hose) || (((s = getenv("pciscan")) != NULL) && (strcmp(s, "yes") == 0))) #endif { #ifdef CONFIG_PCI_SCAN_SHOW printf("PCI: Bus Dev VenId DevId Class Int\n"); #endif hose->last_busno = pci_hose_scan(hose); } #endif /* CONFIG_PCI_PNP */ } /* * drivers/pci/pci.c skips every host bridge but the 405GP since it could * be set as an Adapter. * * I (Andrew May) don't know what we should do here, but I don't want * the auto setup of a PCI device disabling what is done pci_405gp_init * as has happened before. */ void pci_405gp_setup_bridge(struct pci_controller *hose, pci_dev_t dev, struct pci_config_table *entry) { #ifdef DEBUG printf("405gp_setup_bridge\n"); #endif } /* * */ void pci_405gp_fixup_irq(struct pci_controller *hose, pci_dev_t dev) { unsigned char int_line = 0xff; /* * Write pci interrupt line register (cpci405 specific) */ switch (PCI_DEV(dev) & 0x03) { case 0: int_line = 27 + 2; break; case 1: int_line = 27 + 3; break; case 2: int_line = 27 + 0; break; case 3: int_line = 27 + 1; break; } pci_hose_write_config_byte(hose, dev, PCI_INTERRUPT_LINE, int_line); } void pci_405gp_setup_vga(struct pci_controller *hose, pci_dev_t dev, struct pci_config_table *entry) { unsigned int cmdstat = 0; pciauto_setup_device(hose, dev, 6, hose->pci_mem, hose->pci_prefetch, hose->pci_io); /* always enable io space on vga boards */ pci_hose_read_config_dword(hose, dev, PCI_COMMAND, &cmdstat); cmdstat |= PCI_COMMAND_IO; pci_hose_write_config_dword(hose, dev, PCI_COMMAND, cmdstat); } #if !(defined(CONFIG_PIP405) || defined (CONFIG_MIP405)) && !(defined (CONFIG_SC3)) /* *As is these functs get called out of flash Not a horrible *thing, but something to keep in mind. (no statics?) */ static struct pci_config_table pci_405gp_config_table[] = { /*if VendID is 0 it terminates the table search (ie Walnut)*/ #ifdef CONFIG_SYS_PCI_SUBSYS_VENDORID {CONFIG_SYS_PCI_SUBSYS_VENDORID, PCI_ANY_ID, PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_bridge}, #endif {PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_vga}, {PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NOT_DEFINED_VGA, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, pci_405gp_setup_vga}, { } }; static struct pci_controller hose = { fixup_irq: pci_405gp_fixup_irq, config_table: pci_405gp_config_table, }; void pci_init_board(void) { /*we want the ptrs to RAM not flash (ie don't use init list)*/ hose.fixup_irq = pci_405gp_fixup_irq; hose.config_table = pci_405gp_config_table; pci_405gp_init(&hose); } #endif #endif /* CONFIG_405GP */ /*-----------------------------------------------------------------------------+ * CONFIG_440 *-----------------------------------------------------------------------------*/ #if defined(CONFIG_440) static struct pci_controller ppc440_hose = {0}; int pci_440_init (struct pci_controller *hose) { int reg_num = 0; #ifndef CONFIG_DISABLE_PISE_TEST /*--------------------------------------------------------------------------+ * The PCI initialization sequence enable bit must be set ... if not abort * pci setup since updating the bit requires chip reset. *--------------------------------------------------------------------------*/ #if defined(CONFIG_440GX) || defined(CONFIG_440SP) || defined(CONFIG_440SPE) unsigned long strap; mfsdr(sdr_sdstp1,strap); if ((strap & SDR0_SDSTP1_PISE_MASK) == 0) { printf("PCI: SDR0_STRP1[PISE] not set.\n"); printf("PCI: Configuration aborted.\n"); return -1; } #elif defined(CONFIG_440GP) unsigned long strap; strap = mfdcr(cpc0_strp1); if ((strap & CPC0_STRP1_PISE_MASK) == 0) { printf("PCI: CPC0_STRP1[PISE] not set.\n"); printf("PCI: Configuration aborted.\n"); return -1; } #endif #endif /* CONFIG_DISABLE_PISE_TEST */ /*--------------------------------------------------------------------------+ * PCI controller init *--------------------------------------------------------------------------*/ hose->first_busno = 0; hose->last_busno = 0; /* PCI I/O space */ pci_set_region(hose->regions + reg_num++, 0x00000000, PCIX0_IOBASE, 0x10000, PCI_REGION_IO); /* PCI memory space */ pci_set_region(hose->regions + reg_num++, CONFIG_SYS_PCI_TARGBASE, CONFIG_SYS_PCI_MEMBASE, #ifdef CONFIG_SYS_PCI_MEMSIZE CONFIG_SYS_PCI_MEMSIZE, #else 0x10000000, #endif PCI_REGION_MEM ); #if defined(CONFIG_PCI_SYS_MEM_BUS) && defined(CONFIG_PCI_SYS_MEM_PHYS) && \ defined(CONFIG_PCI_SYS_MEM_SIZE) /* System memory space */ pci_set_region(hose->regions + reg_num++, CONFIG_PCI_SYS_MEM_BUS, CONFIG_PCI_SYS_MEM_PHYS, CONFIG_PCI_SYS_MEM_SIZE, PCI_REGION_MEM | PCI_REGION_SYS_MEMORY ); #endif hose->region_count = reg_num; pci_setup_indirect(hose, PCIX0_CFGADR, PCIX0_CFGDATA); /* Let board change/modify hose & do initial checks */ if (pci_pre_init (hose) == 0) { printf("PCI: Board-specific initialization failed.\n"); printf("PCI: Configuration aborted.\n"); return -1; } pci_register_hose( hose ); /*--------------------------------------------------------------------------+ * PCI target init *--------------------------------------------------------------------------*/ #if defined(CONFIG_SYS_PCI_TARGET_INIT) pci_target_init(hose); /* Let board setup pci target */ #else out16r( PCIX0_SBSYSVID, CONFIG_SYS_PCI_SUBSYS_VENDORID ); out16r( PCIX0_SBSYSID, CONFIG_SYS_PCI_SUBSYS_ID ); out16r( PCIX0_CLS, 0x00060000 ); /* Bridge, host bridge */ #endif #if defined(CONFIG_440GX) || defined(CONFIG_440SPE) || \ defined(CONFIG_460EX) || defined(CONFIG_460GT) out32r( PCIX0_BRDGOPT1, 0x04000060 ); /* PLB Rq pri highest */ out32r( PCIX0_BRDGOPT2, in32(PCIX0_BRDGOPT2) | 0x83 ); /* Enable host config, clear Timeout, ensure int src1 */ #elif defined(PCIX0_BRDGOPT1) out32r( PCIX0_BRDGOPT1, 0x10000060 ); /* PLB Rq pri highest */ out32r( PCIX0_BRDGOPT2, in32(PCIX0_BRDGOPT2) | 1 ); /* Enable host config */ #endif /*--------------------------------------------------------------------------+ * PCI master init: default is one 256MB region for PCI memory: * 0x3_00000000 - 0x3_0FFFFFFF ==> CONFIG_SYS_PCI_MEMBASE *--------------------------------------------------------------------------*/ #if defined(CONFIG_SYS_PCI_MASTER_INIT) pci_master_init(hose); /* Let board setup pci master */ #else out32r( PCIX0_POM0SA, 0 ); /* disable */ out32r( PCIX0_POM1SA, 0 ); /* disable */ out32r( PCIX0_POM2SA, 0 ); /* disable */ #if defined(CONFIG_440SPE) out32r( PCIX0_POM0LAL, 0x10000000 ); out32r( PCIX0_POM0LAH, 0x0000000c ); #elif defined(CONFIG_460EX) || defined(CONFIG_460GT) out32r( PCIX0_POM0LAL, 0x20000000 ); out32r( PCIX0_POM0LAH, 0x0000000c ); #else out32r( PCIX0_POM0LAL, 0x00000000 ); out32r( PCIX0_POM0LAH, 0x00000003 ); #endif out32r( PCIX0_POM0PCIAL, CONFIG_SYS_PCI_MEMBASE ); out32r( PCIX0_POM0PCIAH, 0x00000000 ); out32r( PCIX0_POM0SA, 0xf0000001 ); /* 256MB, enabled */ out32r( PCIX0_STS, in32r( PCIX0_STS ) & ~0x0000fff8 ); #endif /*--------------------------------------------------------------------------+ * PCI host configuration -- we don't make any assumptions here ... the * _board_must_indicate_ what to do -- there's just too many runtime * scenarios in environments like cPCI, PPMC, etc. to make a determination * based on hard-coded values or state of arbiter enable. *--------------------------------------------------------------------------*/ if (is_pci_host(hose)) { #ifdef CONFIG_PCI_SCAN_SHOW printf("PCI: Bus Dev VenId DevId Class Int\n"); #endif #if !defined(CONFIG_440EP) && !defined(CONFIG_440GR) && \ !defined(CONFIG_440EPX) && !defined(CONFIG_440GRX) out16r( PCIX0_CMD, in16r( PCIX0_CMD ) | PCI_COMMAND_MASTER); #endif hose->last_busno = pci_hose_scan(hose); } return hose->last_busno; } void pci_init_board(void) { int busno; busno = pci_440_init (&ppc440_hose); #if (defined(CONFIG_440SPE) || \ defined(CONFIG_460EX) || defined(CONFIG_460GT)) && \ !defined(CONFIG_PCI_DISABLE_PCIE) pcie_setup_hoses(busno + 1); #endif } #endif /* CONFIG_440 */ #if defined(CONFIG_405EX) void pci_init_board(void) { #ifdef CONFIG_PCI_SCAN_SHOW printf("PCI: Bus Dev VenId DevId Class Int\n"); #endif pcie_setup_hoses(0); } #endif /* CONFIG_405EX */ #endif /* CONFIG_PCI */