diff options
author | Mike Smith <msmith@FreeBSD.org> | 2000-12-08 22:11:23 +0000 |
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committer | Mike Smith <msmith@FreeBSD.org> | 2000-12-08 22:11:23 +0000 |
commit | bb0d0a8efc748ae3a7a6f639d373bac067cf8ba1 (patch) | |
tree | 01265cfe73a67ec16238af8006ee338101dac771 /sys/dev/pci/pci.c | |
parent | baeb94c70d24a4761ea13e094e0ea6de9ffc7192 (diff) | |
download | src-bb0d0a8efc748ae3a7a6f639d373bac067cf8ba1.tar.gz src-bb0d0a8efc748ae3a7a6f639d373bac067cf8ba1.zip |
Next phase in the PCI subsystem cleanup.
- Move PCI core code to dev/pci.
- Split bridge code out into separate modules.
- Remove the descriptive strings from the bridge drivers. If you
want to know what a device is, use pciconf. Add support for
broadly identifying devices based on class/subclass, and for
parsing a preloaded device identification database so that if
you want to waste the memory, you can identify *anything* we know
about.
- Remove machine-dependant code from the core PCI code. APIC interrupt
mapping is performed by shadowing the intline register in machine-
dependant code.
- Bring interrupt routing support to the Alpha
(although many platforms don't yet support routing or mapping
interrupts entirely correctly). This resulted in spamming
<sys/bus.h> into more places than it really should have gone.
- Put sys/dev on the kernel/modules include path. This avoids
having to change *all* the pci*.h includes.
Notes
Notes:
svn path=/head/; revision=69783
Diffstat (limited to 'sys/dev/pci/pci.c')
-rw-r--r-- | sys/dev/pci/pci.c | 352 |
1 files changed, 221 insertions, 131 deletions
diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c index 2e5b9c582eaa..46990693278e 100644 --- a/sys/dev/pci/pci.c +++ b/sys/dev/pci/pci.c @@ -29,13 +29,11 @@ #include "opt_bus.h" -#include "opt_simos.h" -#include "opt_compat_oldpci.h" - #include <sys/param.h> #include <sys/systm.h> #include <sys/malloc.h> #include <sys/module.h> +#include <sys/linker.h> #include <sys/fcntl.h> #include <sys/conf.h> #include <sys/kernel.h> @@ -50,7 +48,6 @@ #include <machine/bus.h> #include <sys/rman.h> #include <machine/resource.h> -#include <machine/md_var.h> /* For the Alpha */ #include <sys/pciio.h> #include <pci/pcireg.h> @@ -58,13 +55,9 @@ #include "pcib_if.h" -#ifdef __alpha__ -#include <machine/rpb.h> -#endif - -#ifdef APIC_IO -#include <machine/smp.h> -#endif /* APIC_IO */ +static char *pci_vendordata; +static size_t pci_vendordata_size; +static char *pci_describe_device(device_t dev); static devclass_t pci_devclass; @@ -178,52 +171,6 @@ pci_fixancient(pcicfgregs *cfg) cfg->hdrtype = 1; } -/* read config data specific to header type 1 device (PCI to PCI bridge) */ - -static void * -pci_readppb(device_t pcib, int b, int s, int f) -{ - pcih1cfgregs *p; - - p = malloc(sizeof (pcih1cfgregs), M_DEVBUF, M_WAITOK); - if (p == NULL) - return (NULL); - - bzero(p, sizeof *p); - - p->secstat = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_SECSTAT_1, 2); - p->bridgectl = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_BRIDGECTL_1, 2); - - p->seclat = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_SECLAT_1, 1); - - p->iobase = PCI_PPBIOBASE (PCIB_READ_CONFIG(pcib, b, s, f, - PCIR_IOBASEH_1, 2), - PCIB_READ_CONFIG(pcib, b, s, f, - PCIR_IOBASEL_1, 1)); - p->iolimit = PCI_PPBIOLIMIT (PCIB_READ_CONFIG(pcib, b, s, f, - PCIR_IOLIMITH_1, 2), - PCIB_READ_CONFIG(pcib, b, s, f, - PCIR_IOLIMITL_1, 1)); - - p->membase = PCI_PPBMEMBASE (0, - PCIB_READ_CONFIG(pcib, b, s, f, - PCIR_MEMBASE_1, 2)); - p->memlimit = PCI_PPBMEMLIMIT (0, - PCIB_READ_CONFIG(pcib, b, s, f, - PCIR_MEMLIMIT_1, 2)); - - p->pmembase = PCI_PPBMEMBASE ( - (pci_addr_t)PCIB_READ_CONFIG(pcib, b, s, f, PCIR_PMBASEH_1, 4), - PCIB_READ_CONFIG(pcib, b, s, f, PCIR_PMBASEL_1, 2)); - - p->pmemlimit = PCI_PPBMEMLIMIT ( - (pci_addr_t)PCIB_READ_CONFIG(pcib, b, s, f, - PCIR_PMLIMITH_1, 4), - PCIB_READ_CONFIG(pcib, b, s, f, PCIR_PMLIMITL_1, 2)); - - return (p); -} - /* read config data specific to header type 2 device (PCI to CardBus bridge) */ static void * @@ -231,12 +178,10 @@ pci_readpcb(device_t pcib, int b, int s, int f) { pcih2cfgregs *p; - p = malloc(sizeof (pcih2cfgregs), M_DEVBUF, M_WAITOK); + p = malloc(sizeof (pcih2cfgregs), M_DEVBUF, M_WAITOK | M_ZERO); if (p == NULL) return (NULL); - bzero(p, sizeof *p); - p->secstat = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_SECSTAT_2, 2); p->bridgectl = PCIB_READ_CONFIG(pcib, b, s, f, PCIR_BRIDGECTL_2, 2); @@ -271,10 +216,7 @@ pci_hdrtypedata(device_t pcib, int b, int s, int f, pcicfgregs *cfg) case 1: cfg->subvendor = REG(PCIR_SUBVEND_1, 2); cfg->subdevice = REG(PCIR_SUBDEV_1, 2); - cfg->secondarybus = REG(PCIR_SECBUS_1, 1); - cfg->subordinatebus = REG(PCIR_SUBBUS_1, 1); cfg->nummaps = PCI_MAXMAPS_1; - cfg->hdrspec = pci_readppb(pcib, b, s, f); break; case 2: cfg->subvendor = REG(PCIR_SUBVEND_2, 2); @@ -304,10 +246,9 @@ pci_read_device(device_t pcib, int b, int s, int f) if (PCIB_READ_CONFIG(pcib, b, s, f, PCIR_DEVVENDOR, 4) != -1) { devlist_entry = malloc(sizeof(struct pci_devinfo), - M_DEVBUF, M_WAITOK); + M_DEVBUF, M_WAITOK | M_ZERO); if (devlist_entry == NULL) return (NULL); - bzero(devlist_entry, sizeof *devlist_entry); cfg = &devlist_entry->cfg; @@ -327,37 +268,6 @@ pci_read_device(device_t pcib, int b, int s, int f) cfg->lattimer = REG(PCIR_LATTIMER, 1); cfg->intpin = REG(PCIR_INTPIN, 1); cfg->intline = REG(PCIR_INTLINE, 1); -#ifdef __alpha__ - alpha_platform_assign_pciintr(cfg); -#endif - -#ifdef APIC_IO - if (cfg->intpin != 0) { - int airq; - - airq = pci_apic_irq(cfg->bus, cfg->slot, cfg->intpin); - if (airq >= 0) { - /* PCI specific entry found in MP table */ - if (airq != cfg->intline) { - undirect_pci_irq(cfg->intline); - cfg->intline = airq; - } - } else { - /* - * PCI interrupts might be redirected to the - * ISA bus according to some MP tables. Use the - * same methods as used by the ISA devices - * devices to find the proper IOAPIC int pin. - */ - airq = isa_apic_irq(cfg->intline); - if ((airq >= 0) && (airq != cfg->intline)) { - /* XXX: undirect_pci_irq() ? */ - undirect_isa_irq(cfg->intline); - cfg->intline = airq; - } - } - } -#endif /* APIC_IO */ cfg->mingnt = REG(PCIR_MINGNT, 1); cfg->maxlat = REG(PCIR_MAXLAT, 1); @@ -1076,6 +986,7 @@ static int pci_probe(device_t dev) { static int once, busno; + caddr_t vendordata, info; device_set_desc(dev, "PCI bus"); @@ -1095,6 +1006,14 @@ pci_probe(device_t dev) if (!once) { make_dev(&pcicdev, 0, UID_ROOT, GID_WHEEL, 0644, "pci"); + if ((vendordata = preload_search_by_type("pci_vendor_data")) != NULL) { + info = preload_search_info(vendordata, MODINFO_ADDR); + pci_vendordata = *(char **)info; + info = preload_search_info(vendordata, MODINFO_SIZE); + pci_vendordata_size = *(size_t *)info; + /* terminate the database */ + pci_vendordata[pci_vendordata_size] = '\n'; + } once++; } @@ -1157,42 +1076,212 @@ pci_print_child(device_t dev, device_t child) return (retval); } +static struct +{ + int class; + int subclass; + char *desc; +} pci_nomatch_tab[] = { + {PCIC_OLD, -1, "old"}, + {PCIC_OLD, PCIS_OLD_NONVGA, "non-VGA display device"}, + {PCIC_OLD, PCIS_OLD_VGA, "VGA-compatible display device"}, + {PCIC_STORAGE, -1, "mass storage"}, + {PCIC_STORAGE, PCIS_STORAGE_SCSI, "SCSI"}, + {PCIC_STORAGE, PCIS_STORAGE_IDE, "ATA"}, + {PCIC_STORAGE, PCIS_STORAGE_FLOPPY, "floppy disk"}, + {PCIC_STORAGE, PCIS_STORAGE_IPI, "IPI"}, + {PCIC_STORAGE, PCIS_STORAGE_RAID, "RAID"}, + {PCIC_NETWORK, -1, "network"}, + {PCIC_NETWORK, PCIS_NETWORK_ETHERNET, "ethernet"}, + {PCIC_NETWORK, PCIS_NETWORK_TOKENRING, "token ring"}, + {PCIC_NETWORK, PCIS_NETWORK_FDDI, "fddi"}, + {PCIC_NETWORK, PCIS_NETWORK_ATM, "ATM"}, + {PCIC_DISPLAY, -1, "display"}, + {PCIC_DISPLAY, PCIS_DISPLAY_VGA, "VGA"}, + {PCIC_DISPLAY, PCIS_DISPLAY_XGA, "XGA"}, + {PCIC_MULTIMEDIA, -1, "multimedia"}, + {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_VIDEO, "video"}, + {PCIC_MULTIMEDIA, PCIS_MULTIMEDIA_AUDIO, "audio"}, + {PCIC_MEMORY, -1, "memory"}, + {PCIC_MEMORY, PCIS_MEMORY_RAM, "RAM"}, + {PCIC_MEMORY, PCIS_MEMORY_FLASH, "flash"}, + {PCIC_BRIDGE, -1, "bridge"}, + {PCIC_BRIDGE, PCIS_BRIDGE_HOST, "HOST-PCI"}, + {PCIC_BRIDGE, PCIS_BRIDGE_ISA, "PCI-ISA"}, + {PCIC_BRIDGE, PCIS_BRIDGE_EISA, "PCI-EISA"}, + {PCIC_BRIDGE, PCIS_BRIDGE_MCA, "PCI-MCA"}, + {PCIC_BRIDGE, PCIS_BRIDGE_PCI, "PCI-PCI"}, + {PCIC_BRIDGE, PCIS_BRIDGE_PCMCIA, "PCI-PCMCIA"}, + {PCIC_BRIDGE, PCIS_BRIDGE_NUBUS, "PCI-NuBus"}, + {PCIC_BRIDGE, PCIS_BRIDGE_CARDBUS, "PCI-CardBus"}, + {PCIC_BRIDGE, PCIS_BRIDGE_OTHER, "PCI-unknown"}, + {PCIC_SIMPLECOMM, -1, "simple comms"}, + {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_UART, "UART"}, /* could detect 16550 */ + {PCIC_SIMPLECOMM, PCIS_SIMPLECOMM_PAR, "parallel port"}, + {PCIC_BASEPERIPH, -1, "base peripheral"}, + {PCIC_BASEPERIPH, PCIS_BASEPERIPH_PIC, "interrupt controller"}, + {PCIC_BASEPERIPH, PCIS_BASEPERIPH_DMA, "DMA controller"}, + {PCIC_BASEPERIPH, PCIS_BASEPERIPH_TIMER, "timer"}, + {PCIC_BASEPERIPH, PCIS_BASEPERIPH_RTC, "realtime clock"}, + {PCIC_INPUTDEV, -1, "input device"}, + {PCIC_INPUTDEV, PCIS_INPUTDEV_KEYBOARD, "keyboard"}, + {PCIC_INPUTDEV, PCIS_INPUTDEV_DIGITIZER,"digitizer"}, + {PCIC_INPUTDEV, PCIS_INPUTDEV_MOUSE, "mouse"}, + {PCIC_DOCKING, -1, "docking station"}, + {PCIC_PROCESSOR, -1, "processor"}, + {PCIC_SERIALBUS, -1, "serial bus"}, + {PCIC_SERIALBUS, PCIS_SERIALBUS_FW, "FireWire"}, + {PCIC_SERIALBUS, PCIS_SERIALBUS_ACCESS, "AccessBus"}, + {PCIC_SERIALBUS, PCIS_SERIALBUS_SSA, "SSA"}, + {PCIC_SERIALBUS, PCIS_SERIALBUS_USB, "USB"}, + {PCIC_SERIALBUS, PCIS_SERIALBUS_FC, "Fibre Channel"}, + {PCIC_SERIALBUS, PCIS_SERIALBUS_SMBUS, "SMBus"}, + {0, 0, NULL} +}; + static void pci_probe_nomatch(device_t dev, device_t child) { - struct pci_devinfo *dinfo; - pcicfgregs *cfg; - const char *desc; - int unknown; + int i; + char *cp, *scp, *device; + + /* + * Look for a listing for this device in a loaded device database. + */ + if ((device = pci_describe_device(child)) != NULL) { + printf("<%s>", device); + free(device, M_DEVBUF); + } else { + /* + * Scan the class/subclass descriptions for a general description. + */ + cp = "unknown"; + scp = NULL; + for (i = 0; pci_nomatch_tab[i].desc != NULL; i++) { + if (pci_nomatch_tab[i].class == pci_get_class(child)) { + if (pci_nomatch_tab[i].subclass == -1) { + cp = pci_nomatch_tab[i].desc; + } else if (pci_nomatch_tab[i].subclass == pci_get_subclass(child)) { + scp = pci_nomatch_tab[i].desc; + } + } + } + device_printf(dev, "<%s%s%s>", + cp ? : "", + ((cp != NULL) && (scp != NULL)) ? ", " : "", + scp ? : ""); + } + printf(" at %d:%d (no driver attached)\n", + pci_get_slot(child), + pci_get_function(child)); + return; +} - unknown = 0; - dinfo = device_get_ivars(child); - cfg = &dinfo->cfg; - desc = pci_ata_match(child); - if (!desc) desc = pci_usb_match(child); - if (!desc) desc = pci_vga_match(child); - if (!desc) desc = pci_chip_match(child); - if (!desc) { - desc = "unknown card"; - unknown++; +/* + * Parse the PCI device database, if loaded, and return a pointer to a + * description of the device. + * + * The database is flat text formatted as follows: + * + * Any line not in a valid format is ignored. + * Lines are terminated with newline '\n' characters. + * + * A VENDOR line consists of the 4 digit (hex) vendor code, a TAB, then + * the vendor name. + * + * A DEVICE line is entered immediately below the corresponding VENDOR ID. + * - devices cannot be listed without a corresponding VENDOR line. + * A DEVICE line consists of a TAB, the 4 digit (hex) device code, + * another TAB, then the device name. + */ + +/* + * Assuming (ptr) points to the beginning of a line in the database, + * return the vendor or device and description of the next entry. + * The value of (vendor) or (device) inappropriate for the entry type + * is set to -1. Returns nonzero at the end of the database. + * + * Note that this is slightly unrobust in the face of corrupt data; + * we attempt to safeguard against this by spamming the end of the + * database with a newline when we initialise. + */ +static int +pci_describe_parse_line(char **ptr, int *vendor, int *device, char **desc) +{ + char *cp = *ptr; + + *device = -1; + *vendor = -1; + *desc = NULL; + for (;;) { + if ((cp - pci_vendordata) >= pci_vendordata_size) + return(1); + + /* vendor entry? */ + if (sscanf(cp, "%x\t%80[^\n]", vendor, *desc) == 2) + break; + /* device entry? */ + if (sscanf(cp, "\t%x\t%80[^\n]", device, *desc) == 2) + break; + + /* skip to next line */ + while (*cp != '\n') + cp++; + cp++; } - device_printf(dev, "<%s>", desc); - if (bootverbose || unknown) { - printf(" (vendor=0x%04x, dev=0x%04x)", - cfg->vendor, - cfg->device); + *ptr = cp; + return(0); +} + +static char * +pci_describe_device(device_t dev) +{ + int vendor, device; + char *desc, *vp, *dp, *line; + + desc = vp = dp = NULL; + + /* + * If we have no vendor data, we can't do anything. + */ + if (pci_vendordata == NULL) + goto out; + + /* + * Scan the vendor data looking for this device + */ + line = pci_vendordata; + if ((vp = malloc(80, M_DEVBUF, M_NOWAIT)) == NULL) + goto out; + for (;;) { + if (pci_describe_parse_line(&line, &vendor, &device, &vp)) + goto out; + if (vendor == pci_get_vendor(dev)) + break; } - printf(" at %d.%d", - pci_get_slot(child), - pci_get_function(child)); - if (cfg->intpin > 0 && cfg->intline != 255) { - printf(" irq %d", cfg->intline); + if ((dp = malloc(80, M_DEVBUF, M_NOWAIT)) == NULL) + goto out; + for (;;) { + if (pci_describe_parse_line(&line, &vendor, &device, &dp)) + goto out; + if (vendor != -1) { + *dp = 0; + break; + } + if (device == pci_get_device(dev)) + break; } - printf("\n"); - - return; + if ((desc = malloc(strlen(vp) + strlen(dp) + 3, M_DEVBUF, M_NOWAIT)) != NULL) + sprintf(desc, "%s%s%s", vp, (dp[0] != 0) ? ", " : "", dp); + out: + if (vp != NULL) + free(vp, M_DEVBUF); + if (dp != NULL) + free(dp, M_DEVBUF); + return(desc); } + static int pci_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) { @@ -1309,16 +1398,17 @@ pci_alloc_resource(device_t dev, device_t child, int type, int *rid, * XXX add support here for SYS_RES_IOPORT and SYS_RES_MEMORY */ if (device_get_parent(child) == dev) { - if ((type == SYS_RES_IRQ) && (cfg->intline == 255)) { -#ifdef __i386__ - cfg->intline = PCIB_ROUTE_INTERRUPT( - device_get_parent(dev), pci_get_slot(child), - cfg->intpin); -#endif /* __i386__ */ + /* + * If device doesn't have an interrupt routed, and is deserving of + * an interrupt, try to assign it one. + */ + if ((type == SYS_RES_IRQ) && (cfg->intline == 255) && (cfg->intpin != 0)) { + cfg->intline = PCIB_ROUTE_INTERRUPT(device_get_parent(dev), child, + cfg->intpin); if (cfg->intline != 255) { pci_write_config(child, PCIR_INTLINE, cfg->intline, 1); resource_list_add(rl, SYS_RES_IRQ, 0, - cfg->intline, cfg->intline, 1); + cfg->intline, cfg->intline, 1); } } } @@ -1419,7 +1509,7 @@ static device_method_t pci_methods[] = { static driver_t pci_driver = { "pci", pci_methods, - 1, /* no softc */ + 0, /* no softc */ }; DRIVER_MODULE(pci, pcib, pci_driver, pci_devclass, pci_modevent, 0); DRIVER_MODULE(pci, acpi_pcib, pci_driver, pci_devclass, pci_modevent, 0); |