diff options
Diffstat (limited to 'arch/ppc/platforms/chrp_pci.c')
| -rw-r--r-- | arch/ppc/platforms/chrp_pci.c | 309 |
1 files changed, 0 insertions, 309 deletions
diff --git a/arch/ppc/platforms/chrp_pci.c b/arch/ppc/platforms/chrp_pci.c deleted file mode 100644 index c7fe6182bb77..000000000000 --- a/arch/ppc/platforms/chrp_pci.c +++ /dev/null @@ -1,309 +0,0 @@ -/* - * CHRP pci routines. - */ - -#include <linux/config.h> -#include <linux/kernel.h> -#include <linux/pci.h> -#include <linux/delay.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/ide.h> - -#include <asm/io.h> -#include <asm/pgtable.h> -#include <asm/irq.h> -#include <asm/hydra.h> -#include <asm/prom.h> -#include <asm/gg2.h> -#include <asm/machdep.h> -#include <asm/sections.h> -#include <asm/pci-bridge.h> -#include <asm/open_pic.h> - -/* LongTrail */ -void __iomem *gg2_pci_config_base; - -/* - * The VLSI Golden Gate II has only 512K of PCI configuration space, so we - * limit the bus number to 3 bits - */ - -int gg2_read_config(struct pci_bus *bus, unsigned int devfn, int off, - int len, u32 *val) -{ - volatile void __iomem *cfg_data; - struct pci_controller *hose = bus->sysdata; - - if (bus->number > 7) - return PCIBIOS_DEVICE_NOT_FOUND; - /* - * Note: the caller has already checked that off is - * suitably aligned and that len is 1, 2 or 4. - */ - cfg_data = hose->cfg_data + ((bus->number<<16) | (devfn<<8) | off); - switch (len) { - case 1: - *val = in_8(cfg_data); - break; - case 2: - *val = in_le16(cfg_data); - break; - default: - *val = in_le32(cfg_data); - break; - } - return PCIBIOS_SUCCESSFUL; -} - -int gg2_write_config(struct pci_bus *bus, unsigned int devfn, int off, - int len, u32 val) -{ - volatile void __iomem *cfg_data; - struct pci_controller *hose = bus->sysdata; - - if (bus->number > 7) - return PCIBIOS_DEVICE_NOT_FOUND; - /* - * Note: the caller has already checked that off is - * suitably aligned and that len is 1, 2 or 4. - */ - cfg_data = hose->cfg_data + ((bus->number<<16) | (devfn<<8) | off); - switch (len) { - case 1: - out_8(cfg_data, val); - break; - case 2: - out_le16(cfg_data, val); - break; - default: - out_le32(cfg_data, val); - break; - } - return PCIBIOS_SUCCESSFUL; -} - -static struct pci_ops gg2_pci_ops = -{ - gg2_read_config, - gg2_write_config -}; - -/* - * Access functions for PCI config space using RTAS calls. - */ -int -rtas_read_config(struct pci_bus *bus, unsigned int devfn, int offset, - int len, u32 *val) -{ - struct pci_controller *hose = bus->sysdata; - unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8) - | (((bus->number - hose->first_busno) & 0xff) << 16) - | (hose->index << 24); - unsigned long ret = ~0UL; - int rval; - - rval = call_rtas("read-pci-config", 2, 2, &ret, addr, len); - *val = ret; - return rval? PCIBIOS_DEVICE_NOT_FOUND: PCIBIOS_SUCCESSFUL; -} - -int -rtas_write_config(struct pci_bus *bus, unsigned int devfn, int offset, - int len, u32 val) -{ - struct pci_controller *hose = bus->sysdata; - unsigned long addr = (offset & 0xff) | ((devfn & 0xff) << 8) - | (((bus->number - hose->first_busno) & 0xff) << 16) - | (hose->index << 24); - int rval; - - rval = call_rtas("write-pci-config", 3, 1, NULL, addr, len, val); - return rval? PCIBIOS_DEVICE_NOT_FOUND: PCIBIOS_SUCCESSFUL; -} - -static struct pci_ops rtas_pci_ops = -{ - rtas_read_config, - rtas_write_config -}; - -volatile struct Hydra __iomem *Hydra = NULL; - -int __init -hydra_init(void) -{ - struct device_node *np; - - np = find_devices("mac-io"); - if (np == NULL || np->n_addrs == 0) - return 0; - Hydra = ioremap(np->addrs[0].address, np->addrs[0].size); - printk("Hydra Mac I/O at %x\n", np->addrs[0].address); - printk("Hydra Feature_Control was %x", - in_le32(&Hydra->Feature_Control)); - out_le32(&Hydra->Feature_Control, (HYDRA_FC_SCC_CELL_EN | - HYDRA_FC_SCSI_CELL_EN | - HYDRA_FC_SCCA_ENABLE | - HYDRA_FC_SCCB_ENABLE | - HYDRA_FC_ARB_BYPASS | - HYDRA_FC_MPIC_ENABLE | - HYDRA_FC_SLOW_SCC_PCLK | - HYDRA_FC_MPIC_IS_MASTER)); - printk(", now %x\n", in_le32(&Hydra->Feature_Control)); - return 1; -} - -void __init -chrp_pcibios_fixup(void) -{ - struct pci_dev *dev = NULL; - struct device_node *np; - - /* PCI interrupts are controlled by the OpenPIC */ - for_each_pci_dev(dev) { - np = pci_device_to_OF_node(dev); - if ((np != 0) && (np->n_intrs > 0) && (np->intrs[0].line != 0)) - dev->irq = np->intrs[0].line; - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq); - } -} - -#define PRG_CL_RESET_VALID 0x00010000 - -static void __init -setup_python(struct pci_controller *hose, struct device_node *dev) -{ - u32 __iomem *reg; - u32 val; - unsigned long addr = dev->addrs[0].address; - - setup_indirect_pci(hose, addr + 0xf8000, addr + 0xf8010); - - /* Clear the magic go-slow bit */ - reg = ioremap(dev->addrs[0].address + 0xf6000, 0x40); - val = in_be32(®[12]); - if (val & PRG_CL_RESET_VALID) { - out_be32(®[12], val & ~PRG_CL_RESET_VALID); - in_be32(®[12]); - } - iounmap(reg); -} - -/* Marvell Discovery II based Pegasos 2 */ -static void __init setup_peg2(struct pci_controller *hose, struct device_node *dev) -{ - struct device_node *root = find_path_device("/"); - struct device_node *rtas; - - rtas = of_find_node_by_name (root, "rtas"); - if (rtas) { - hose->ops = &rtas_pci_ops; - } else { - printk ("RTAS supporting Pegasos OF not found, please upgrade" - " your firmware\n"); - } - pci_assign_all_buses = 1; -} - -void __init -chrp_find_bridges(void) -{ - struct device_node *dev; - int *bus_range; - int len, index = -1; - struct pci_controller *hose; - unsigned int *dma; - char *model, *machine; - int is_longtrail = 0, is_mot = 0, is_pegasos = 0; - struct device_node *root = find_path_device("/"); - - /* - * The PCI host bridge nodes on some machines don't have - * properties to adequately identify them, so we have to - * look at what sort of machine this is as well. - */ - machine = get_property(root, "model", NULL); - if (machine != NULL) { - is_longtrail = strncmp(machine, "IBM,LongTrail", 13) == 0; - is_mot = strncmp(machine, "MOT", 3) == 0; - if (strncmp(machine, "Pegasos2", 8) == 0) - is_pegasos = 2; - else if (strncmp(machine, "Pegasos", 7) == 0) - is_pegasos = 1; - } - for (dev = root->child; dev != NULL; dev = dev->sibling) { - if (dev->type == NULL || strcmp(dev->type, "pci") != 0) - continue; - ++index; - /* The GG2 bridge on the LongTrail doesn't have an address */ - if (dev->n_addrs < 1 && !is_longtrail) { - printk(KERN_WARNING "Can't use %s: no address\n", - dev->full_name); - continue; - } - bus_range = (int *) get_property(dev, "bus-range", &len); - if (bus_range == NULL || len < 2 * sizeof(int)) { - printk(KERN_WARNING "Can't get bus-range for %s\n", - dev->full_name); - continue; - } - if (bus_range[1] == bus_range[0]) - printk(KERN_INFO "PCI bus %d", bus_range[0]); - else - printk(KERN_INFO "PCI buses %d..%d", - bus_range[0], bus_range[1]); - printk(" controlled by %s", dev->type); - if (dev->n_addrs > 0) - printk(" at %x", dev->addrs[0].address); - printk("\n"); - - hose = pcibios_alloc_controller(); - if (!hose) { - printk("Can't allocate PCI controller structure for %s\n", - dev->full_name); - continue; - } - hose->arch_data = dev; - hose->first_busno = bus_range[0]; - hose->last_busno = bus_range[1]; - - model = get_property(dev, "model", NULL); - if (model == NULL) - model = "<none>"; - if (device_is_compatible(dev, "IBM,python")) { - setup_python(hose, dev); - } else if (is_mot - || strncmp(model, "Motorola, Grackle", 17) == 0) { - setup_indirect_pci(hose, 0xfec00000, 0xfee00000); - } else if (is_longtrail) { - void __iomem *p = ioremap(GG2_PCI_CONFIG_BASE, 0x80000); - hose->ops = &gg2_pci_ops; - hose->cfg_data = p; - gg2_pci_config_base = p; - } else if (is_pegasos == 1) { - setup_indirect_pci(hose, 0xfec00cf8, 0xfee00cfc); - } else if (is_pegasos == 2) { - setup_peg2(hose, dev); - } else { - printk("No methods for %s (model %s), using RTAS\n", - dev->full_name, model); - hose->ops = &rtas_pci_ops; - } - - pci_process_bridge_OF_ranges(hose, dev, index == 0); - - /* check the first bridge for a property that we can - use to set pci_dram_offset */ - dma = (unsigned int *) - get_property(dev, "ibm,dma-ranges", &len); - if (index == 0 && dma != NULL && len >= 6 * sizeof(*dma)) { - pci_dram_offset = dma[2] - dma[3]; - printk("pci_dram_offset = %lx\n", pci_dram_offset); - } - } - - /* Do not fixup interrupts from OF tree on pegasos */ - if (is_pegasos == 0) - ppc_md.pcibios_fixup = chrp_pcibios_fixup; -} |