X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=drivers%2Fpcmcia%2Fyenta_socket.c;h=1344746381e8dce0fb6020760956d083fb5815ac;hb=1252c517cf3df240ae51946a096035765dfd2e6d;hp=db9f952f9e3c2a575fba721ddb9018ed4c94cdb2;hpb=c85749e6d1df55ca5b23cb1d220ed7df92df8d78;p=powerpc.git diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index db9f952f9e..1344746381 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -49,7 +49,13 @@ MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only #define to_cycles(ns) ((ns)/120) #define to_ns(cycles) ((cycles)*120) +/** + * yenta PCI irq probing. + * currently only used in the TI/EnE initialization code + */ +#ifdef CONFIG_YENTA_TI static int yenta_probe_cb_irq(struct yenta_socket *socket); +#endif static unsigned int override_bios; @@ -151,6 +157,40 @@ static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) readb(socket->base + 0x800 + reg + 1); } +static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf) +{ + struct pci_dev *dev = to_pci_dev(yentadev); + struct yenta_socket *socket = pci_get_drvdata(dev); + int offset = 0, i; + + offset = snprintf(buf, PAGE_SIZE, "CB registers:"); + for (i = 0; i < 0x24; i += 4) { + unsigned val; + if (!(i & 15)) + offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i); + val = cb_readl(socket, i); + offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val); + } + + offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:"); + for (i = 0; i < 0x45; i++) { + unsigned char val; + if (!(i & 7)) { + if (i & 8) { + memcpy(buf + offset, " -", 2); + offset += 2; + } else + offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i); + } + val = exca_readb(socket, i); + offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val); + } + buf[offset++] = '\n'; + return offset; +} + +static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL); + /* * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend * on what kind of card is inserted.. @@ -190,95 +230,6 @@ static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value) return 0; } -static void yenta_get_power(struct yenta_socket *socket, socket_state_t *state) -{ - if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) && - (socket->flags & YENTA_16BIT_POWER_EXCA)) { - u8 reg, vcc, vpp; - - reg = exca_readb(socket, I365_POWER); - vcc = reg & I365_VCC_MASK; - vpp = reg & I365_VPP1_MASK; - state->Vcc = state->Vpp = 0; - - if (socket->flags & YENTA_16BIT_POWER_DF) { - if (vcc == I365_VCC_3V) - state->Vcc = 33; - if (vcc == I365_VCC_5V) - state->Vcc = 50; - if (vpp == I365_VPP1_5V) - state->Vpp = state->Vcc; - if (vpp == I365_VPP1_12V) - state->Vpp = 120; - } else { - if (reg & I365_VCC_5V) { - state->Vcc = 50; - if (vpp == I365_VPP1_5V) - state->Vpp = 50; - if (vpp == I365_VPP1_12V) - state->Vpp = 120; - } - } - } else { - u32 control; - - control = cb_readl(socket, CB_SOCKET_CONTROL); - - switch (control & CB_SC_VCC_MASK) { - case CB_SC_VCC_5V: state->Vcc = 50; break; - case CB_SC_VCC_3V: state->Vcc = 33; break; - default: state->Vcc = 0; - } - - switch (control & CB_SC_VPP_MASK) { - case CB_SC_VPP_12V: state->Vpp = 120; break; - case CB_SC_VPP_5V: state->Vpp = 50; break; - case CB_SC_VPP_3V: state->Vpp = 33; break; - default: state->Vpp = 0; - } - } -} - -static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state) -{ - struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); - u8 reg; - u32 control; - - control = cb_readl(socket, CB_SOCKET_CONTROL); - - yenta_get_power(socket, state); - state->io_irq = socket->io_irq; - - if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { - u16 bridge = config_readw(socket, CB_BRIDGE_CONTROL); - if (bridge & CB_BRIDGE_CRST) - state->flags |= SS_RESET; - return 0; - } - - /* 16-bit card state.. */ - reg = exca_readb(socket, I365_POWER); - state->flags = (reg & I365_PWR_AUTO) ? SS_PWR_AUTO : 0; - state->flags |= (reg & I365_PWR_OUT) ? SS_OUTPUT_ENA : 0; - - reg = exca_readb(socket, I365_INTCTL); - state->flags |= (reg & I365_PC_RESET) ? 0 : SS_RESET; - state->flags |= (reg & I365_PC_IOCARD) ? SS_IOCARD : 0; - - reg = exca_readb(socket, I365_CSCINT); - state->csc_mask = (reg & I365_CSC_DETECT) ? SS_DETECT : 0; - if (state->flags & SS_IOCARD) { - state->csc_mask |= (reg & I365_CSC_STSCHG) ? SS_STSCHG : 0; - } else { - state->csc_mask |= (reg & I365_CSC_BVD1) ? SS_BATDEAD : 0; - state->csc_mask |= (reg & I365_CSC_BVD2) ? SS_BATWARN : 0; - state->csc_mask |= (reg & I365_CSC_READY) ? SS_READY : 0; - } - - return 0; -} - static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state) { /* some birdges require to use the ExCA registers to power 16bit cards */ @@ -336,7 +287,10 @@ static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state) struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); u16 bridge; - yenta_set_power(socket, state); + /* if powering down: do it immediately */ + if (state->Vcc == 0) + yenta_set_power(socket, state); + socket->io_irq = state->io_irq; bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR); if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) { @@ -388,6 +342,10 @@ static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state) /* Socket event mask: get card insert/remove events.. */ cb_writel(socket, CB_SOCKET_EVENT, -1); cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK); + + /* if powering up: do it as the last step when the socket is configured */ + if (state->Vcc != 0) + yenta_set_power(socket, state); return 0; } @@ -497,6 +455,9 @@ static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) csc = exca_readb(socket, I365_CSC); + if (!(cb_event || csc)) + return IRQ_NONE; + events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ; events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0; if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { @@ -510,10 +471,7 @@ static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) if (events) pcmcia_parse_events(&socket->socket, events); - if (cb_event || csc) - return IRQ_HANDLED; - - return IRQ_NONE; + return IRQ_HANDLED; } static void yenta_interrupt_wrapper(unsigned long data) @@ -765,6 +723,9 @@ static void yenta_close(struct pci_dev *dev) { struct yenta_socket *sock = pci_get_drvdata(dev); + /* Remove the register attributes */ + device_remove_file(&dev->dev, &dev_attr_yenta_registers); + /* we don't want a dying socket registered */ pcmcia_unregister_socket(&sock->socket); @@ -791,17 +752,24 @@ static struct pccard_operations yenta_socket_operations = { .init = yenta_sock_init, .suspend = yenta_sock_suspend, .get_status = yenta_get_status, - .get_socket = yenta_get_socket, .set_socket = yenta_set_socket, .set_io_map = yenta_set_io_map, .set_mem_map = yenta_set_mem_map, }; +#ifdef CONFIG_YENTA_TI #include "ti113x.h" +#endif +#ifdef CONFIG_YENTA_RICOH #include "ricoh.h" +#endif +#ifdef CONFIG_YENTA_TOSHIBA #include "topic.h" +#endif +#ifdef CONFIG_YENTA_O2 #include "o2micro.h" +#endif enum { CARDBUS_TYPE_DEFAULT = -1, @@ -821,6 +789,7 @@ enum { * initialization sequences etc details. List them here.. */ static struct cardbus_type cardbus_type[] = { +#ifdef CONFIG_YENTA_TI [CARDBUS_TYPE_TI] = { .override = ti_override, .save_state = ti_save_state, @@ -845,27 +814,36 @@ static struct cardbus_type cardbus_type[] = { .restore_state = ti_restore_state, .sock_init = ti_init, }, +#endif +#ifdef CONFIG_YENTA_RICOH [CARDBUS_TYPE_RICOH] = { .override = ricoh_override, .save_state = ricoh_save_state, .restore_state = ricoh_restore_state, }, +#endif +#ifdef CONFIG_YENTA_TOSHIBA [CARDBUS_TYPE_TOPIC95] = { .override = topic95_override, }, [CARDBUS_TYPE_TOPIC97] = { .override = topic97_override, }, +#endif +#ifdef CONFIG_YENTA_O2 [CARDBUS_TYPE_O2MICRO] = { .override = o2micro_override, .restore_state = o2micro_restore_state, }, +#endif +#ifdef CONFIG_YENTA_TI [CARDBUS_TYPE_ENE] = { .override = ene_override, .save_state = ti_save_state, .restore_state = ti_restore_state, .sock_init = ti_init, }, +#endif }; @@ -911,6 +889,12 @@ static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mas } +/** + * yenta PCI irq probing. + * currently only used in the TI/EnE initialization code + */ +#ifdef CONFIG_YENTA_TI + /* interrupt handler, only used during probing */ static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *regs) { @@ -939,7 +923,7 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket) socket->probe_status = 0; - if (request_irq(socket->cb_irq, yenta_probe_handler, SA_SHIRQ, "yenta", socket)) { + if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) { printk(KERN_WARNING "Yenta: request_irq() in yenta_probe_cb_irq() failed!\n"); return -1; } @@ -963,6 +947,7 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket) return (int) socket->probe_status; } +#endif /* CONFIG_YENTA_TI */ /* @@ -1020,6 +1005,77 @@ static void yenta_config_init(struct yenta_socket *socket) config_writew(socket, CB_BRIDGE_CONTROL, bridge); } +/** + * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge + * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to + * + * Checks if devices on the bus which the CardBus bridge bridges to would be + * invisible during PCI scans because of a misconfigured subordinate number + * of the parent brige - some BIOSes seem to be too lazy to set it right. + * Does the fixup carefully by checking how far it can go without conflicts. + * See http://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information. + */ +static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge) +{ + struct list_head *tmp; + unsigned char upper_limit; + /* + * We only check and fix the parent bridge: All systems which need + * this fixup that have been reviewed are laptops and the only bridge + * which needed fixing was the parent bridge of the CardBus bridge: + */ + struct pci_bus *bridge_to_fix = cardbus_bridge->parent; + + /* Check bus numbers are already set up correctly: */ + if (bridge_to_fix->subordinate >= cardbus_bridge->subordinate) + return; /* The subordinate number is ok, nothing to do */ + + if (!bridge_to_fix->parent) + return; /* Root bridges are ok */ + + /* stay within the limits of the bus range of the parent: */ + upper_limit = bridge_to_fix->parent->subordinate; + + /* check the bus ranges of all silbling bridges to prevent overlap */ + list_for_each(tmp, &bridge_to_fix->parent->children) { + struct pci_bus * silbling = pci_bus_b(tmp); + /* + * If the silbling has a higher secondary bus number + * and it's secondary is equal or smaller than our + * current upper limit, set the new upper limit to + * the bus number below the silbling's range: + */ + if (silbling->secondary > bridge_to_fix->subordinate + && silbling->secondary <= upper_limit) + upper_limit = silbling->secondary - 1; + } + + /* Show that the wanted subordinate number is not possible: */ + if (cardbus_bridge->subordinate > upper_limit) + printk(KERN_WARNING "Yenta: Upper limit for fixing this " + "bridge's parent bridge: #%02x\n", upper_limit); + + /* If we have room to increase the bridge's subordinate number, */ + if (bridge_to_fix->subordinate < upper_limit) { + + /* use the highest number of the hidden bus, within limits */ + unsigned char subordinate_to_assign = + min(cardbus_bridge->subordinate, upper_limit); + + printk(KERN_INFO "Yenta: Raising subordinate bus# of parent " + "bus (#%02x) from #%02x to #%02x\n", + bridge_to_fix->number, + bridge_to_fix->subordinate, subordinate_to_assign); + + /* Save the new subordinate in the bus struct of the bridge */ + bridge_to_fix->subordinate = subordinate_to_assign; + + /* and update the PCI config space with the new subordinate */ + pci_write_config_byte(bridge_to_fix->self, + PCI_SUBORDINATE_BUS, bridge_to_fix->subordinate); + } +} + /* * Initialize a cardbus controller. Make sure we have a usable * interrupt, and that we can map the cardbus area. Fill in the @@ -1041,10 +1097,9 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i return -ENODEV; } - socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL); + socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL); if (!socket) return -ENOMEM; - memset(socket, 0, sizeof(*socket)); /* prepare pcmcia_socket */ socket->socket.ops = ¥ta_socket_operations; @@ -1117,7 +1172,7 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i /* We must finish initialization here */ - if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, SA_SHIRQ, "yenta", socket)) { + if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) { /* No IRQ or request_irq failed. Poll */ socket->cb_irq = 0; /* But zero is a valid IRQ number. */ init_timer(&socket->poll_timer); @@ -1136,10 +1191,15 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i yenta_get_socket_capabilities(socket, isa_interrupts); printk(KERN_INFO "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE)); + yenta_fixup_parent_bridge(dev->subordinate); + /* Register it with the pcmcia layer.. */ ret = pcmcia_register_socket(&socket->socket); - if (ret == 0) + if (ret == 0) { + /* Add the yenta register attributes */ + device_create_file(&dev->dev, &dev_attr_yenta_registers); goto out; + } unmap: iounmap(socket->base); @@ -1223,6 +1283,7 @@ static struct pci_device_id yenta_table [] = { * advanced overrides instead. (I can't get the * data sheets for these devices. --rmk) */ +#ifdef CONFIG_YENTA_TI CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X), @@ -1251,6 +1312,7 @@ static struct pci_device_id yenta_table [] = { CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX), @@ -1265,18 +1327,25 @@ static struct pci_device_id yenta_table [] = { CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE), CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE), CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE), +#endif /* CONFIG_YENTA_TI */ +#ifdef CONFIG_YENTA_RICOH CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH), CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH), CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH), CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH), CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH), +#endif +#ifdef CONFIG_YENTA_TOSHIBA CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95), CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97), CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97), +#endif +#ifdef CONFIG_YENTA_O2 CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO), +#endif /* match any cardbus bridge */ CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),