diff options
Diffstat (limited to 'sys/arch/powerpc/pci/mpcpcibus.c')
| -rw-r--r-- | sys/arch/powerpc/pci/mpcpcibus.c | 347 |
1 files changed, 251 insertions, 96 deletions
diff --git a/sys/arch/powerpc/pci/mpcpcibus.c b/sys/arch/powerpc/pci/mpcpcibus.c index dbe86716df5..d14f0edaf75 100644 --- a/sys/arch/powerpc/pci/mpcpcibus.c +++ b/sys/arch/powerpc/pci/mpcpcibus.c @@ -1,4 +1,4 @@ -/* $OpenBSD: mpcpcibus.c,v 1.16 2000/04/01 15:38:21 rahnds Exp $ */ +/* $OpenBSD: mpcpcibus.c,v 1.17 2000/07/07 13:28:58 rahnds Exp $ */ /* * Copyright (c) 1997 Per Fogelstrom @@ -33,7 +33,8 @@ */ /* - * MPC106 PCI BUS Bridge driver. + * Generic PCI BUS Bridge driver. + * specialized hooks for different config methods. */ #include <sys/param.h> @@ -92,6 +93,15 @@ static int mpcpcibrprint __P((void *, const char *pnp)); struct pcibr_config mpc_config; +/* + * config types + * bit meanings + * 0 - standard cf8/cfc type configurations, + * sometimes the base addresses for these are different + * 1 - Config Method #2 configuration - uni-north + * + * 2 - 64 bit config bus, data for accesses &4 is at daddr+4; + */ struct { char * compat; u_int32_t addr; /* offset */ @@ -99,7 +109,7 @@ struct { int config_type; } config_offsets[] = { {"grackle", 0x00c00cf8, 0x00e00cfc, 0 }, - {"uni-north", 0x00800000, 0x00c00000, 1 }, + {"uni-north", 0x00800000, 0x00c00000, 3 }, {"legacy", 0x00000cf8, 0x00000cfc, 0 }, {"IBM,27-82660", 0x00000cf8, 0x00000cfc, 0 }, {NULL, 0x00000000, 0x00000000, 0 }, @@ -160,6 +170,8 @@ mpcpcibrmatch(parent, match, aux) return found; } +void fix_node_irq(int node, struct pcibus_attach_args *pba); + int pci_map_a = 0; void mpcpcibrattach(parent, self, aux) @@ -170,8 +182,9 @@ mpcpcibrattach(parent, self, aux) struct confargs *ca = aux; struct pcibr_config *lcp; struct pcibus_attach_args pba; - int map; + int map, node; char *bridge; + int of_node = 0; switch(system_type) { case POWER4e: @@ -328,17 +341,6 @@ mpcpcibrattach(parent, self, aux) int i; int len; -#if 0 - /* for powerstack boxes? */ - struct ranges_old { - u_int32_t flags; - u_int32_t pad1; - u_int32_t pad2; - u_int32_t base; - u_int32_t size; - }; - struct ranges_old porange = &range_store; -#endif struct ranges_new { u_int32_t flags; u_int32_t pad1; @@ -367,24 +369,6 @@ mpcpcibrattach(parent, self, aux) lcp = sc->sc_pcibr = &sc->pcibr_config; -#if 0 - /* powerstack boxes? */ - if (strcmp(compat, "IBM,27-82660") { - sc->sc_membus_space.bus_base = - MPC106_P_PCI_MEM_SPACE; - sc->sc_membus_space.bus_reverse = 1; - sc->sc_iobus_space.bus_base = - MPC106_P_PCI_IO_SPACE; - sc->sc_iobus_space.bus_reverse = 1; - if ( bus_space_map(&(sc->sc_iobus_space), 0, - NBPG, 0, &lcp->ioh_cf8) != 0 ) - { - panic("mpcpcibus: unable to" - " map self\n"); - } - lcp->ioh_cfc = lcp->ioh_cf8; - } else -#endif { int found; @@ -442,6 +426,7 @@ mpcpcibrattach(parent, self, aux) data_offset = config_offsets[i].data; lcp->config_type = config_offsets[i].config_type; + break; } } if (addr_offset == 0) { @@ -449,8 +434,13 @@ mpcpcibrattach(parent, self, aux) " compatible %s\n", compat); return; } - printf("found mem base %x io base %x config addr %x config data %x\n", - sc->sc_membus_space.bus_base, sc->sc_iobus_space.bus_base, addr_offset, data_offset); +#if 0 + printf("found mem base %x io base %x config addr %x" + " config data %x\n", + sc->sc_membus_space.bus_base, + sc->sc_iobus_space.bus_base, + addr_offset, data_offset); +#endif @@ -464,8 +454,10 @@ mpcpcibrattach(parent, self, aux) { panic("mpcpcibus: unable to map self\n"); } + of_node = ca->ca_node; } + lcp->lc_pc.pc_conf_v = lcp; lcp->lc_pc.pc_attach_hook = mpc_attach_hook; lcp->lc_pc.pc_bus_maxdevs = mpc_bus_maxdevs; @@ -483,7 +475,6 @@ mpcpcibrattach(parent, self, aux) lcp->lc_pc.pc_intr_establish = mpc_intr_establish; lcp->lc_pc.pc_intr_disestablish = mpc_intr_disestablish; - printf(": %s, Revision %x. ", bridge, mpc_cfg_read_1(lcp, MPC106_PCI_REVID)); break; @@ -494,15 +485,153 @@ mpcpcibrattach(parent, self, aux) } pba.pba_dmat = &pci_bus_dma_tag; + pba.pba_busname = "pci"; pba.pba_iot = &sc->sc_iobus_space; pba.pba_memt = &sc->sc_membus_space; pba.pba_pc = &lcp->lc_pc; pba.pba_bus = 0; + + /* we want to check pci irq settings */ + if (of_node != 0) { + int nn; + + for (node = OF_child(of_node); node; node = nn) + { + { + char name[32]; + int len; + len = OF_getprop(node, "name", name, + sizeof(name)); + name[len] = 0; +#if 0 + printf("checking node %s\n", name); +#endif + } + fix_node_irq(node, &pba); + + /* iterate section */ + if ((nn = OF_child(node)) != 0) { + continue; + } + while ((nn = OF_peer(node)) == 0) { + node = OF_parent(node); + if (node == of_node) { + nn = 0; /* done */ + break; + } + } + } + } + config_found(self, &pba, mpcpcibrprint); } + +#define OFW_PCI_PHYS_HI_BUSMASK 0x00ff0000 +#define OFW_PCI_PHYS_HI_BUSSHIFT 16 +#define OFW_PCI_PHYS_HI_DEVICEMASK 0x0000f800 +#define OFW_PCI_PHYS_HI_DEVICESHIFT 11 +#define OFW_PCI_PHYS_HI_FUNCTIONMASK 0x00000700 +#define OFW_PCI_PHYS_HI_FUNCTIONSHIFT 8 + +#define pcibus(x) \ + (((x) & OFW_PCI_PHYS_HI_BUSMASK) >> OFW_PCI_PHYS_HI_BUSSHIFT) +#define pcidev(x) \ + (((x) & OFW_PCI_PHYS_HI_DEVICEMASK) >> OFW_PCI_PHYS_HI_DEVICESHIFT) +#define pcifunc(x) \ + (((x) & OFW_PCI_PHYS_HI_FUNCTIONMASK) >> OFW_PCI_PHYS_HI_FUNCTIONSHIFT) + +/* + * Find PCI IRQ from OF + */ +int +find_node_intr(node, addr, intr) + int node; + u_int32_t *addr, *intr; +{ + int parent, iparent, len, mlen; + int match, i; + u_int32_t map[64], *mp; + u_int32_t imask[8], maskedaddr[8]; + u_int32_t icells; + char name [32]; + + len = OF_getprop(node, "AAPL,interrupts", intr, 4); + if (len == 4) + return 1; + + parent = OF_parent(node); + len = OF_getprop(parent, "interrupt-map", map, sizeof(map)); + mlen = OF_getprop(parent, "interrupt-map-mask", imask, sizeof(imask)); + + if ((len == -1) || (mlen == -1)) + goto nomap; + for (i = 0; i < (mlen / 4); i++) { + maskedaddr[i] = addr[i] & imask[i]; + } + mp = map; + while (len > mlen) { + match = bcmp(maskedaddr, mp, mlen); + mp += mlen / 4; + len -= mlen; + iparent = *mp++; + if (OF_getprop(iparent, "#interrupt-cells", &icells, 4) != 4) + return -1; + + if (match == 0) { + /* multiple irqs? */ + *intr = *mp; + return 1; + } + mp += icells; + len -= icells * 4; + } + return -1; +nomap: + return -1; +} + +void +fix_node_irq(node, pba) + int node; + struct pcibus_attach_args *pba; +{ + struct { + u_int32_t phys_hi, phys_mid, phys_lo; + u_int32_t size_hi, size_lo; + } addr [8]; + int len; + pcitag_t tag; + u_int32_t irq; + u_int32_t intr; + + pci_chipset_tag_t pc = pba->pba_pc; + + len = OF_getprop(node, "assigned-addresses", addr, sizeof(addr)); + if (len < sizeof(addr[0])) { + return; + } + tag = pci_make_tag(pc, pcibus(addr[0].phys_hi), + pcidev(addr[0].phys_hi), + pcifunc(addr[0].phys_hi)); + /* program the interrupt line register with the value + * found in openfirmware + */ + if (find_node_intr(node, &addr[0].phys_hi, &irq) == -1) + return; + + intr = pci_conf_read(pc, tag, PCI_INTERRUPT_REG); +#if 0 + printf("changing interrupt from %d to %d\n", + intr & PCI_INTERRUPT_LINE_MASK, + irq & PCI_INTERRUPT_LINE_MASK); +#endif + intr &= ~PCI_INTERRUPT_LINE_MASK; + intr |= irq & PCI_INTERRUPT_LINE_MASK; + pci_conf_write(pc, tag, PCI_INTERRUPT_REG, intr); +} static int mpcpcibrprint(aux, pnp) @@ -624,7 +753,57 @@ mpc_decompose_tag(cpv, tag, busp, devp, fncp) *fncp = (tag >> FNC_SHIFT) & 0x7; } +static u_int32_t +mpc_gen_config_reg(cpv, tag, offset) + void *cpv; + pcitag_t tag; + int offset; +{ + struct pcibr_config *cp = cpv; + unsigned int bus, dev, fcn; + u_int32_t reg; + /* + static int spin = 0; + while (spin > 85); + spin++; + */ + + mpc_decompose_tag(cpv, tag, &bus, &dev, &fcn); + + if (cp->config_type & 1) { + /* Config Mechanism #2 */ + if (bus == 0) { + if (dev < 11) { + return 0xffffffff; + } + /* + * Need to do config type 0 operation + * 1 << (11?+dev) | fcn << 8 | reg + * 11? is because pci spec states + * that 11-15 is reserved. + */ + reg = 1 << (dev) | fcn << 8 | offset; + + } else { + if (dev > 15) { + return 0xffffffff; + } + /* + * config type 1 + */ + reg = tag | offset | 1; + + } + } else { + /* config mechanism #2, type 0 + /* standard cf8/cfc config */ + reg = 0x80000000 | tag | offset; + } + return reg; +} + +/* #define DEBUG_CONFIG */ pcireg_t mpc_conf_read(cpv, tag, offset) void *cpv; @@ -639,47 +818,22 @@ mpc_conf_read(cpv, tag, offset) int s; int handle; int daddr = 0; - unsigned int bus, dev, fcn; if(offset & 3 || offset < 0 || offset >= 0x100) { printf ("pci_conf_read: bad reg %x\n", offset); return(~0); } - mpc_decompose_tag(cpv, tag, &bus, &dev, &fcn); - - if ((cp->config_type & 1) && (bus == 0)) { - if (dev > (30 - 11)) { - return 0xffffffff; - } -#if 0 - printf(" bus %x dev %x fcn %x offset %x", bus, dev, fcn, offset); -#endif - /* - * Need to do config type 1 operation - * 1 << (11+dev) | fcn << 8 | reg - */ - reg = 1 << (11+dev) | fcn << 8 | offset; - if ((cp->config_type & 2) && (offset & 0x4)) { - daddr += 4; - } - - } else { -#if 0 - printf(" bus %x dev %x fcn %x offset %x", bus, dev, fcn, offset); -#endif - /* Config type 0 operation - * 80000000 | tag | offset - */ - reg = 0x80000000 | tag | offset; - if (bus != 0) { - reg |= 1; - } + reg = mpc_gen_config_reg(cpv, tag, offset); + /* if invalid tag, return -1 */ + if (reg == 0xffffffff) { + return 0xffffffff; + } + if ((cp->config_type & 2) && (offset & 0x04)) { + daddr += 4; } -#if 0 - printf(" daddr %x reg %x",daddr, reg); -#endif + s = splhigh(); bus_space_write_4(cp->lc_iot, cp->ioh_cf8, 0, reg); @@ -689,8 +843,15 @@ mpc_conf_read(cpv, tag, offset) bus_space_read_4(cp->lc_iot, cp->ioh_cf8, 0); /* XXX */ splx(s); -#if 0 - printf("data %x\n", data); +#ifdef DEBUG_CONFIG + if (!((offset == 0) && (data == 0xffffffff))) { + unsigned int bus, dev, fcn; + mpc_decompose_tag(cpv, tag, &bus, &dev, &fcn); + printf("mpc_conf_read bus %x dev %x fcn %x offset %x", bus, dev, fcn, + offset); + printf(" daddr %x reg %x",daddr, reg); + printf(" data %x\n", data); + } #endif return(data); @@ -707,39 +868,33 @@ mpc_conf_write(cpv, tag, offset, data) u_int32_t reg; int s; int handle; + int daddr = 0; -#if 0 - printf("mpc_conf_write tag %x offset %x data %x\n", tag, offset, data); -#endif - - reg = 0x80000000 | tag | offset; + reg = mpc_gen_config_reg(cpv, tag, offset); - if (cp->config_type == 1) { + /* if invalid tag, return ??? */ + if (reg == 0xffffffff) { + return; + } + if ((cp->config_type & 2) && (offset & 0x04)) { + daddr += 4; + } +#ifdef DEBUG_CONFIG + { unsigned int bus, dev, fcn; - /* - * Need to do config type 1 operation - * 80800000 | 1 << dev | fcn << 8 | reg - */ - if ( dev > 11) { -#if 0 - printf("invalid device\n", dev); -#endif - return; - } mpc_decompose_tag(cpv, tag, &bus, &dev, &fcn); - reg = 0x80800000 | 1 << dev | fcn << 8 | offset; - - } else { - /* Config type 0 operation - * 80800000 | bus << 16 | dev << 11 | - */ - reg = 0x80000000 | tag | offset; - + printf("mpc_conf_write bus %x dev %x fcn %x offset %x", bus, + dev, fcn, offset); + printf(" daddr %x reg %x",daddr, reg); + printf(" data %x\n", data); } +#endif + + s = splhigh(); bus_space_write_4(cp->lc_iot, cp->ioh_cf8, 0, reg); bus_space_read_4(cp->lc_iot, cp->ioh_cf8, 0); /* XXX */ - bus_space_write_4(cp->lc_iot, cp->ioh_cfc, 0, data); + bus_space_write_4(cp->lc_iot, cp->ioh_cfc, daddr, data); bus_space_write_4(cp->lc_iot, cp->ioh_cf8, 0, 0); /* disable */ bus_space_read_4(cp->lc_iot, cp->ioh_cf8, 0); /* XXX */ |