From 087454609e47295443af793a282cddcd91a5f49c Mon Sep 17 00:00:00 2001 From: Matthew McClintock Date: Wed, 28 Jun 2006 10:45:17 -0500 Subject: * Added support for initializing second PCI bus on 85xx Patch by Andy Fleming 17-Mar-2006 Signed-off-by: Andy Fleming --- cpu/mpc85xx/pci.c | 182 +++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 147 insertions(+), 35 deletions(-) (limited to 'cpu/mpc85xx/pci.c') diff --git a/cpu/mpc85xx/pci.c b/cpu/mpc85xx/pci.c index a94493e..ca11bce 100644 --- a/cpu/mpc85xx/pci.c +++ b/cpu/mpc85xx/pci.c @@ -32,66 +32,90 @@ #if defined(CONFIG_PCI) +static struct pci_controller *pci_hose; + void -pci_mpc85xx_init(struct pci_controller *hose) +pci_mpc85xx_init(struct pci_controller *board_hose) { + u16 reg16; + u32 dev; + volatile immap_t *immap = (immap_t *)CFG_CCSRBAR; volatile ccsr_pcix_t *pcix = &immap->im_pcix; + volatile ccsr_pcix_t *pcix2 = &immap->im_pcix2; + volatile ccsr_gur_t *gur = &immap->im_gur; + struct pci_controller * hose; - u16 reg16; + pci_hose = board_hose; + + hose = &pci_hose[0]; hose->first_busno = 0; hose->last_busno = 0xff; - pci_set_region(hose->regions + 0, - CFG_PCI1_MEM_BASE, - CFG_PCI1_MEM_PHYS, - CFG_PCI1_MEM_SIZE, - PCI_REGION_MEM); - - pci_set_region(hose->regions + 1, - CFG_PCI1_IO_BASE, - CFG_PCI1_IO_PHYS, - CFG_PCI1_IO_SIZE, - PCI_REGION_IO); - - hose->region_count = 2; - pci_setup_indirect(hose, (CFG_IMMR+0x8000), (CFG_IMMR+0x8004)); + /* + * Hose scan. + */ + dev = PCI_BDF(hose->first_busno, 0, 0); + pci_hose_read_config_word (hose, dev, PCI_COMMAND, ®16); + reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; + pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16); + + /* + * Clear non-reserved bits in status register. + */ + pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff); + + if (!(gur->pordevsr & PORDEVSR_PCI)) { + /* PCI-X init */ + reg16 = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ + | PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E; + pci_hose_write_config_word(hose, dev, PCIX_COMMAND, reg16); + } + pcix->potar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff; pcix->potear1 = 0x00000000; - pcix->powbar1 = (CFG_PCI1_MEM_BASE >> 12) & 0x000fffff; + pcix->powbar1 = (CFG_PCI1_MEM_PHYS >> 12) & 0x000fffff; pcix->powbear1 = 0x00000000; - pcix->powar1 = 0x8004401c; /* 512M MEM space */ + pcix->powar1 = (POWAR_EN | POWAR_MEM_READ | + POWAR_MEM_WRITE | POWAR_MEM_512M); - pcix->potar2 = 0x00000000; + pcix->potar2 = (CFG_PCI1_IO_BASE >> 12) & 0x000fffff; pcix->potear2 = 0x00000000; - pcix->powbar2 = (CFG_PCI1_IO_BASE >> 12) & 0x000fffff; + pcix->powbar2 = (CFG_PCI1_IO_PHYS >> 12) & 0x000fffff; pcix->powbear2 = 0x00000000; - pcix->powar2 = 0x80088017; /* 16M IO space */ + pcix->powar2 = (POWAR_EN | POWAR_IO_READ | + POWAR_IO_WRITE | POWAR_IO_1M); pcix->pitar1 = 0x00000000; pcix->piwbar1 = 0x00000000; - pcix->piwar1 = 0xa0f5501e; /* Enable, Prefetch, Local Mem, - * Snoop R/W, 2G */ + pcix->piwar1 = (PIWAR_EN | PIWAR_PF | PIWAR_LOCAL | + PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP | PIWAR_MEM_2G); - /* - * Hose scan. - */ - pci_register_hose(hose); + pcix->powar3 = 0; + pcix->powar4 = 0; + pcix->piwar2 = 0; + pcix->piwar3 = 0; - pci_read_config_word (PCI_BDF(0,0,0), PCI_COMMAND, ®16); - reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; - pci_write_config_word(PCI_BDF(0,0,0), PCI_COMMAND, reg16); + pci_set_region(hose->regions + 0, + CFG_PCI1_MEM_BASE, + CFG_PCI1_MEM_PHYS, + CFG_PCI1_MEM_SIZE, + PCI_REGION_MEM); - /* - * Clear non-reserved bits in status register. - */ - pci_write_config_word(PCI_BDF(0,0,0), PCI_STATUS, 0xffff); - pci_write_config_byte(PCI_BDF(0,0,0), PCI_LATENCY_TIMER,0x80); + pci_set_region(hose->regions + 1, + CFG_PCI1_IO_BASE, + CFG_PCI1_IO_PHYS, + CFG_PCI1_IO_SIZE, + PCI_REGION_IO); + + hose->region_count = 2; + + pci_register_hose(hose); #if defined(CONFIG_MPC8555CDS) || defined(CONFIG_MPC8541CDS) /* @@ -117,6 +141,94 @@ pci_mpc85xx_init(struct pci_controller *hose) #endif hose->last_busno = pci_hose_scan(hose); + +#ifdef CONFIG_MPC85XX_PCI2 + hose = &pci_hose[1]; + + hose->first_busno = pci_hose[0].last_busno + 1; + hose->last_busno = 0xff; + + pci_setup_indirect(hose, + (CFG_IMMR+0x9000), + (CFG_IMMR+0x9004)); + + dev = PCI_BDF(hose->first_busno, 0, 0); + pci_hose_read_config_word (hose, dev, PCI_COMMAND, ®16); + reg16 |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY; + pci_hose_write_config_word(hose, dev, PCI_COMMAND, reg16); + + /* + * Clear non-reserved bits in status register. + */ + pci_hose_write_config_word(hose, dev, PCI_STATUS, 0xffff); + + pcix2->potar1 = (CFG_PCI2_MEM_BASE >> 12) & 0x000fffff; + pcix2->potear1 = 0x00000000; + pcix2->powbar1 = (CFG_PCI2_MEM_PHYS >> 12) & 0x000fffff; + pcix2->powbear1 = 0x00000000; + pcix2->powar1 = (POWAR_EN | POWAR_MEM_READ | + POWAR_MEM_WRITE | POWAR_MEM_512M); + + pcix2->potar2 = (CFG_PCI2_IO_BASE >> 12) & 0x000fffff; + pcix2->potear2 = 0x00000000; + pcix2->powbar2 = (CFG_PCI2_IO_PHYS >> 12) & 0x000fffff; + pcix2->powbear2 = 0x00000000; + pcix2->powar2 = (POWAR_EN | POWAR_IO_READ | + POWAR_IO_WRITE | POWAR_IO_1M); + + pcix2->pitar1 = 0x00000000; + pcix2->piwbar1 = 0x00000000; + pcix2->piwar1 = (PIWAR_EN | PIWAR_PF | PIWAR_LOCAL | + PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP | PIWAR_MEM_2G); + + pcix2->powar3 = 0; + pcix2->powar4 = 0; + pcix2->piwar2 = 0; + pcix2->piwar3 = 0; + + pci_set_region(hose->regions + 0, + CFG_PCI2_MEM_BASE, + CFG_PCI2_MEM_PHYS, + CFG_PCI2_MEM_SIZE, + PCI_REGION_MEM); + + pci_set_region(hose->regions + 1, + CFG_PCI2_IO_BASE, + CFG_PCI2_IO_PHYS, + CFG_PCI2_IO_SIZE, + PCI_REGION_IO); + + hose->region_count = 2; + + /* + * Hose scan. + */ + pci_register_hose(hose); + + hose->last_busno = pci_hose_scan(hose); +#endif } +#ifdef CONFIG_OF_FLAT_TREE +void +ft_pci_setup(void *blob, bd_t *bd) +{ + u32 *p; + int len; + + p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@8000/bus-range", &len); + if (p != NULL) { + p[0] = pci_hose[0].first_busno; + p[1] = pci_hose[0].last_busno; + } + +#ifdef CONFIG_MPC85XX_PCI2 + p = (u32 *)ft_get_prop(blob, "/" OF_SOC "/pci@9000/bus-range", &len); + if (p != NULL) { + p[0] = pci_hose[1].first_busno; + p[1] = pci_hose[1].last_busno; + } +#endif +} +#endif /* CONFIG_OF_FLAT_TREE */ #endif /* CONFIG_PCI */ -- cgit v1.1