X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpcmcia%2Fyenta_socket.c;h=da471bddc9728a2022412a028d6dfe82d7ceb74c;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=d6974a147b9d0d5fec8ec800c60c12456ed7432f;hpb=c7b5ebbddf7bcd3651947760f423e3783bbe6573;p=linux-2.6.git diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index d6974a147..da471bddc 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -18,7 +18,6 @@ #include #include -#include #include #include #include @@ -28,6 +27,17 @@ #include "yenta_socket.h" #include "i82365.h" +static int disable_clkrun; +module_param(disable_clkrun, bool, 0444); +MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option"); + +static int isa_probe = 1; +module_param(isa_probe, bool, 0444); +MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing"); + +static int pwr_irqs_off; +module_param(pwr_irqs_off, bool, 0644); +MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!"); #if 0 #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args) @@ -39,9 +49,19 @@ #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; +module_param(override_bios, uint, 0000); +MODULE_PARM_DESC (override_bios, "yenta ignore bios resource allocation"); + /* * Generate easy-to-use ways of reading a cardbus sockets * regular memory space ("cb_xxx"), configuration space @@ -58,6 +78,7 @@ static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val) { debug("%p %04x %08x\n", socket, reg, val); writel(val, socket->base + reg); + readl(socket->base + reg); /* avoid problems with PCI write posting */ } static inline u8 config_readb(struct yenta_socket *socket, unsigned offset) @@ -122,6 +143,7 @@ static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val { debug("%p %04x %02x\n", socket, reg, val); writeb(val, socket->base + 0x800 + reg); + readb(socket->base + 0x800 + reg); /* PCI write posting... */ } static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) @@ -129,8 +151,46 @@ static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val) debug("%p %04x %04x\n", socket, reg, val); writeb(val, socket->base + 0x800 + reg); writeb(val >> 8, socket->base + 0x800 + reg + 1); + + /* PCI write posting... */ + readb(socket->base + 0x800 + reg); + 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.. @@ -143,15 +203,16 @@ static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value) val = (state & CB_3VCARD) ? SS_3VCARD : 0; val |= (state & CB_XVCARD) ? SS_XVCARD : 0; - val |= (state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | CB_3VCARD - | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING; + val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING; + val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0; + if (state & CB_CBCARD) { val |= SS_CARDBUS; val |= (state & CB_CARDSTS) ? SS_STSCHG : 0; val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT; val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0; - } else { + } else if (state & CB_16BITCARD) { u8 status = exca_readb(socket, I365_STATUS); val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0; if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { @@ -169,81 +230,56 @@ static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value) return 0; } -static int yenta_Vcc_power(u32 control) -{ - switch (control & CB_SC_VCC_MASK) { - case CB_SC_VCC_5V: return 50; - case CB_SC_VCC_3V: return 33; - default: return 0; - } -} - -static int yenta_Vpp_power(u32 control) -{ - switch (control & CB_SC_VPP_MASK) { - case CB_SC_VPP_12V: return 120; - case CB_SC_VPP_5V: return 50; - case CB_SC_VPP_3V: return 33; - default: return 0; - } -} - -static int yenta_get_socket(struct pcmcia_socket *sock, socket_state_t *state) +static void yenta_set_power(struct yenta_socket *socket, 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); - - state->Vcc = yenta_Vcc_power(control); - state->Vpp = yenta_Vpp_power(control); - 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; + /* some birdges require to use the ExCA registers to power 16bit cards */ + if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) && + (socket->flags & YENTA_16BIT_POWER_EXCA)) { + u8 reg, old; + reg = old = exca_readb(socket, I365_POWER); + reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK); + + /* i82365SL-DF style */ + if (socket->flags & YENTA_16BIT_POWER_DF) { + switch (state->Vcc) { + case 33: reg |= I365_VCC_3V; break; + case 50: reg |= I365_VCC_5V; break; + default: reg = 0; break; + } + switch (state->Vpp) { + case 33: + case 50: reg |= I365_VPP1_5V; break; + case 120: reg |= I365_VPP1_12V; break; + } + } else { + /* i82365SL-B style */ + switch (state->Vcc) { + case 50: reg |= I365_VCC_5V; break; + default: reg = 0; break; + } + switch (state->Vpp) { + case 50: reg |= I365_VPP1_5V | I365_VPP2_5V; break; + case 120: reg |= I365_VPP1_12V | I365_VPP2_12V; break; + } + } - 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; + if (reg != old) + exca_writeb(socket, I365_POWER, reg); } 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) -{ - u32 reg = 0; /* CB_SC_STPCLK? */ - switch (state->Vcc) { - case 33: reg = CB_SC_VCC_3V; break; - case 50: reg = CB_SC_VCC_5V; break; - default: reg = 0; break; - } - switch (state->Vpp) { - case 33: reg |= CB_SC_VPP_3V; break; - case 50: reg |= CB_SC_VPP_5V; break; - case 120: reg |= CB_SC_VPP_12V; break; + u32 reg = 0; /* CB_SC_STPCLK? */ + switch (state->Vcc) { + case 33: reg = CB_SC_VCC_3V; break; + case 50: reg = CB_SC_VCC_5V; break; + default: reg = 0; break; + } + switch (state->Vpp) { + case 33: reg |= CB_SC_VPP_3V; break; + case 50: reg |= CB_SC_VPP_5V; break; + case 120: reg |= CB_SC_VPP_12V; break; + } + if (reg != cb_readl(socket, CB_SOCKET_CONTROL)) + cb_writel(socket, CB_SOCKET_CONTROL, reg); } - if (reg != cb_readl(socket, CB_SOCKET_CONTROL)) - cb_writel(socket, CB_SOCKET_CONTROL, reg); } static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state) @@ -251,7 +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) { @@ -303,6 +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; } @@ -398,11 +441,13 @@ static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map * } -static unsigned int yenta_events(struct yenta_socket *socket) + +static irqreturn_t yenta_interrupt(int irq, void *dev_id) { + unsigned int events; + struct yenta_socket *socket = (struct yenta_socket *) dev_id; u8 csc; u32 cb_event; - unsigned int events; /* Clear interrupt status for the event */ cb_event = cb_readl(socket, CB_SOCKET_EVENT); @@ -410,6 +455,9 @@ static unsigned int yenta_events(struct yenta_socket *socket) 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) { @@ -419,28 +467,18 @@ static unsigned int yenta_events(struct yenta_socket *socket) events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0; events |= (csc & I365_CSC_READY) ? SS_READY : 0; } - return events; -} - -static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - unsigned int events; - struct yenta_socket *socket = (struct yenta_socket *) dev_id; - - events = yenta_events(socket); - if (events) { + if (events) pcmcia_parse_events(&socket->socket, events); - return IRQ_HANDLED; - } - return IRQ_NONE; + + return IRQ_HANDLED; } static void yenta_interrupt_wrapper(unsigned long data) { struct yenta_socket *socket = (struct yenta_socket *) data; - yenta_interrupt(0, (void *)socket, NULL); + yenta_interrupt(0, (void *)socket); socket->poll_timer.expires = jiffies + HZ; add_timer(&socket->poll_timer); } @@ -463,26 +501,28 @@ static void yenta_clear_maps(struct yenta_socket *socket) } } +/* redoes voltage interrogation if required */ +static void yenta_interrogate(struct yenta_socket *socket) +{ + u32 state; + + state = cb_readl(socket, CB_SOCKET_STATE); + if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) || + (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) || + ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD))) + cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST); +} + /* Called at resume and initialization events */ static int yenta_sock_init(struct pcmcia_socket *sock) { struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); - u32 state; - u16 bridge; - - bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~CB_BRIDGE_INTR; - if (!socket->cb_irq) - bridge |= CB_BRIDGE_INTR; - config_writew(socket, CB_BRIDGE_CONTROL, bridge); exca_writeb(socket, I365_GBLCTL, 0x00); exca_writeb(socket, I365_GENCTL, 0x00); /* Redo card voltage interrogation */ - state = cb_readl(socket, CB_SOCKET_STATE); - if (!(state & (CB_CDETECT1 | CB_CDETECT2 | CB_5VCARD | - CB_3VCARD | CB_XVCARD | CB_YVCARD))) - cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST); + yenta_interrogate(socket); yenta_clear_maps(socket); @@ -499,8 +539,6 @@ static int yenta_sock_suspend(struct pcmcia_socket *sock) { struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket); - yenta_set_socket(sock, &dead_socket); - /* Disable CSC interrupts */ cb_writel(socket, CB_SOCKET_MASK, 0x0); @@ -511,60 +549,29 @@ static int yenta_sock_suspend(struct pcmcia_socket *sock) * Use an adaptive allocation for the memory resource, * sometimes the memory behind pci bridges is limited: * 1/8 of the size of the io window of the parent. - * max 4 MB, min 16 kB. + * max 4 MB, min 16 kB. We try very hard to not get below + * the "ACC" values, though. */ #define BRIDGE_MEM_MAX 4*1024*1024 +#define BRIDGE_MEM_ACC 128*1024 #define BRIDGE_MEM_MIN 16*1024 -#define BRIDGE_IO_MAX 256 +#define BRIDGE_IO_MAX 512 +#define BRIDGE_IO_ACC 256 #define BRIDGE_IO_MIN 32 #ifndef PCIBIOS_MIN_CARDBUS_IO #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO #endif -static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type) +static int yenta_search_one_res(struct resource *root, struct resource *res, + u32 min) { - struct pci_bus *bus; - struct resource *root, *res; - u32 start, end; - u32 align, size, min; - unsigned offset; - unsigned mask; - - /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ - mask = ~0xfff; - if (type & IORESOURCE_IO) - mask = ~3; - - offset = 0x1c + 8*nr; - bus = socket->dev->subordinate; - res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; - res->name = bus->name; - res->flags = type; - res->start = 0; - res->end = 0; - root = pci_find_parent_resource(socket->dev, res); - - if (!root) - return; - - start = config_readl(socket, offset) & mask; - end = config_readl(socket, offset+4) | ~mask; - if (start && end > start) { - res->start = start; - res->end = end; - if (request_resource(root, res) == 0) - return; - printk(KERN_INFO "yenta %s: Preassigned resource %d busy, reconfiguring...\n", - pci_name(socket->dev), nr); - res->start = res->end = 0; - } + u32 align, size, start, end; - if (type & IORESOURCE_IO) { + if (res->flags & IORESOURCE_IO) { align = 1024; size = BRIDGE_IO_MAX; - min = BRIDGE_IO_MIN; start = PCIBIOS_MIN_CARDBUS_IO; end = ~0U; } else { @@ -579,26 +586,99 @@ static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned typ i++; size = 1 << i; } - if (size < BRIDGE_MEM_MIN) - size = BRIDGE_MEM_MIN; - min = BRIDGE_MEM_MIN; + if (size < min) + size = min; align = size; start = PCIBIOS_MIN_MEM; end = ~0U; } - + do { - if (allocate_resource(root, res, size, start, end, align, NULL, NULL)==0) { - config_writel(socket, offset, res->start); - config_writel(socket, offset+4, res->end); - return; + if (allocate_resource(root, res, size, start, end, align, + NULL, NULL)==0) { + return 1; } size = size/2; align = size; } while (size >= min); + + return 0; +} + + +static int yenta_search_res(struct yenta_socket *socket, struct resource *res, + u32 min) +{ + int i; + for (i=0; idev->bus->resource[i]; + if (!root) + continue; + + if ((res->flags ^ root->flags) & + (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH)) + continue; /* Wrong type */ + + if (yenta_search_one_res(root, res, min)) + return 1; + } + return 0; +} + +static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end) +{ + struct resource *root, *res; + struct pci_bus_region region; + unsigned mask; + + res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; + /* Already allocated? */ + if (res->parent) + return 0; + + /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ + mask = ~0xfff; + if (type & IORESOURCE_IO) + mask = ~3; + + res->name = socket->dev->subordinate->name; + res->flags = type; + + region.start = config_readl(socket, addr_start) & mask; + region.end = config_readl(socket, addr_end) | ~mask; + if (region.start && region.end > region.start && !override_bios) { + pcibios_bus_to_resource(socket->dev, res, ®ion); + root = pci_find_parent_resource(socket->dev, res); + if (root && (request_resource(root, res) == 0)) + return 0; + printk(KERN_INFO "yenta %s: Preassigned resource %d busy or not available, reconfiguring...\n", + pci_name(socket->dev), nr); + } + + if (type & IORESOURCE_IO) { + if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) || + (yenta_search_res(socket, res, BRIDGE_IO_ACC)) || + (yenta_search_res(socket, res, BRIDGE_IO_MIN))) + return 1; + } else { + if (type & IORESOURCE_PREFETCH) { + if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) || + (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) || + (yenta_search_res(socket, res, BRIDGE_MEM_MIN))) + return 1; + /* Approximating prefetchable by non-prefetchable */ + res->flags = IORESOURCE_MEM; + } + if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) || + (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) || + (yenta_search_res(socket, res, BRIDGE_MEM_MIN))) + return 1; + } + printk(KERN_INFO "yenta %s: no resource of type %x available, trying to continue...\n", - pci_name(socket->dev), type); - res->start = res->end = 0; + pci_name(socket->dev), type); + res->start = res->end = res->flags = 0; + return 0; } /* @@ -606,10 +686,17 @@ static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned typ */ static void yenta_allocate_resources(struct yenta_socket *socket) { - yenta_allocate_res(socket, 0, IORESOURCE_MEM|IORESOURCE_PREFETCH); - yenta_allocate_res(socket, 1, IORESOURCE_MEM); - yenta_allocate_res(socket, 2, IORESOURCE_IO); - yenta_allocate_res(socket, 3, IORESOURCE_IO); /* PCI isn't clever enough to use this one yet */ + int program = 0; + program += yenta_allocate_res(socket, 0, IORESOURCE_IO, + PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0); + program += yenta_allocate_res(socket, 1, IORESOURCE_IO, + PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1); + program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH, + PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0); + program += yenta_allocate_res(socket, 3, IORESOURCE_MEM, + PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1); + if (program) + pci_setup_cardbus(socket->dev->subordinate); } @@ -624,7 +711,7 @@ static void yenta_free_resources(struct yenta_socket *socket) res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i; if (res->start != 0 && res->end != 0) release_resource(res); - res->start = res->end = 0; + res->start = res->end = res->flags = 0; } } @@ -636,6 +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); @@ -653,6 +743,7 @@ static void yenta_close(struct pci_dev *dev) yenta_free_resources(sock); pci_release_regions(dev); + pci_disable_device(dev); pci_set_drvdata(dev, NULL); } @@ -661,17 +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, @@ -680,15 +778,18 @@ enum { CARDBUS_TYPE_TI12XX, CARDBUS_TYPE_TI1250, CARDBUS_TYPE_RICOH, + CARDBUS_TYPE_TOPIC95, CARDBUS_TYPE_TOPIC97, CARDBUS_TYPE_O2MICRO, + CARDBUS_TYPE_ENE, }; /* * Different cardbus controllers have slightly different * initialization sequences etc details. List them here.. */ -struct cardbus_type cardbus_type[] = { +static struct cardbus_type cardbus_type[] = { +#ifdef CONFIG_YENTA_TI [CARDBUS_TYPE_TI] = { .override = ti_override, .save_state = ti_save_state, @@ -713,18 +814,36 @@ 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 }; @@ -743,16 +862,8 @@ static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mas { int i; unsigned long val; - u16 bridge_ctrl; u32 mask; - /* Set up ISA irq routing to probe the ISA irqs.. */ - bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); - if (!(bridge_ctrl & CB_BRIDGE_INTR)) { - bridge_ctrl |= CB_BRIDGE_INTR; - config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); - } - /* * Probe for usable interrupts using the force * register to generate bogus card status events. @@ -774,15 +885,18 @@ static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mas mask = probe_irq_mask(val) & 0xffff; - bridge_ctrl &= ~CB_BRIDGE_INTR; - config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); - return mask; } +/** + * 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) +static irqreturn_t yenta_probe_handler(int irq, void *dev_id) { struct yenta_socket *socket = (struct yenta_socket *) dev_id; u8 csc; @@ -804,19 +918,12 @@ static irqreturn_t yenta_probe_handler(int irq, void *dev_id, struct pt_regs *re /* probes the PCI interrupt, use only on override functions */ static int yenta_probe_cb_irq(struct yenta_socket *socket) { - u16 bridge_ctrl; - if (!socket->cb_irq) return -1; socket->probe_status = 0; - /* disable ISA interrupts */ - bridge_ctrl = config_readw(socket, CB_BRIDGE_CONTROL); - bridge_ctrl &= ~CB_BRIDGE_INTR; - config_writew(socket, CB_BRIDGE_CONTROL, bridge_ctrl); - - 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; } @@ -826,9 +933,8 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket) cb_writel(socket, CB_SOCKET_EVENT, -1); cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK); cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS); - - set_current_state(TASK_UNINTERRUPTIBLE); - schedule_timeout(HZ/10); + + msleep(100); /* disable interrupts */ cb_writel(socket, CB_SOCKET_MASK, 0); @@ -841,6 +947,7 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket) return (int) socket->probe_status; } +#endif /* CONFIG_YENTA_TI */ /* @@ -848,11 +955,11 @@ static int yenta_probe_cb_irq(struct yenta_socket *socket) */ static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask) { - socket->socket.features |= SS_CAP_PAGE_REGS | SS_CAP_PCCARD | SS_CAP_CARDBUS; - socket->socket.map_size = 0x1000; socket->socket.pci_irq = socket->cb_irq; - socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask); - socket->socket.cb_dev = socket->dev; + if (isa_probe) + socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask); + else + socket->socket.irq_mask = 0; printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n", socket->socket.irq_mask, socket->cb_irq); @@ -865,11 +972,12 @@ static void yenta_config_init(struct yenta_socket *socket) { u16 bridge; struct pci_dev *dev = socket->dev; + struct pci_bus_region region; - pci_set_power_state(socket->dev, 0); + pcibios_resource_to_bus(socket->dev, ®ion, &dev->resource[0]); config_writel(socket, CB_LEGACY_MODE_BASE, 0); - config_writel(socket, PCI_BASE_ADDRESS_0, dev->resource[0].start); + config_writel(socket, PCI_BASE_ADDRESS_0, region.start); config_writew(socket, PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | @@ -892,11 +1000,82 @@ static void yenta_config_init(struct yenta_socket *socket) * - PCI interrupts enabled if a PCI interrupt exists.. */ bridge = config_readw(socket, CB_BRIDGE_CONTROL); - bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_INTR | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN); - bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN | CB_BRIDGE_INTR; + bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN); + bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN; 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 @@ -906,17 +1085,31 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i { struct yenta_socket *socket; int ret; - - socket = kmalloc(sizeof(struct yenta_socket), GFP_KERNEL); + + /* + * If we failed to assign proper bus numbers for this cardbus + * controller during PCI probe, its subordinate pci_bus is NULL. + * Bail out if so. + */ + if (!dev->subordinate) { + printk(KERN_ERR "Yenta: no bus associated with %s! " + "(try 'pci=assign-busses')\n", pci_name(dev)); + return -ENODEV; + } + + 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; + socket->socket.resource_ops = &pccard_nonstatic_ops; socket->socket.dev.dev = &dev->dev; socket->socket.driver_data = socket; socket->socket.owner = THIS_MODULE; + socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD; + socket->socket.map_size = 0x1000; + socket->socket.cb_dev = dev; /* prepare struct yenta_socket */ socket->dev = dev; @@ -955,7 +1148,7 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i * the irq stuff... */ printk(KERN_INFO "Yenta: CardBus bridge found at %s [%04x:%04x]\n", - dev->slot_name, dev->subsystem_vendor, dev->subsystem_device); + pci_name(dev), dev->subsystem_vendor, dev->subsystem_device); yenta_config_init(socket); @@ -979,7 +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); @@ -987,16 +1180,30 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i socket->poll_timer.data = (unsigned long)socket; socket->poll_timer.expires = jiffies + HZ; add_timer(&socket->poll_timer); + printk(KERN_INFO "Yenta: no PCI IRQ, CardBus support disabled for this socket.\n" + KERN_INFO "Yenta: check your BIOS CardBus, BIOS IRQ or ACPI settings.\n"); + } else { + socket->socket.features |= SS_CAP_CARDBUS; } /* Figure out what the dang thing can do for the PCMCIA layer... */ + yenta_interrogate(socket); 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) - goto out; + if (ret == 0) { + /* Add the yenta register attributes */ + ret = device_create_file(&dev->dev, &dev_attr_yenta_registers); + if (ret == 0) + goto out; + + /* error path... */ + pcmcia_unregister_socket(&socket->socket); + } unmap: iounmap(socket->base); @@ -1010,8 +1217,8 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i return ret; } - -static int yenta_dev_suspend (struct pci_dev *dev, u32 state) +#ifdef CONFIG_PM +static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state) { struct yenta_socket *socket = pci_get_drvdata(dev); int ret; @@ -1023,10 +1230,17 @@ static int yenta_dev_suspend (struct pci_dev *dev, u32 state) socket->type->save_state(socket); /* FIXME: pci_save_state needs to have a better interface */ - pci_save_state(dev, socket->saved_state); - pci_read_config_dword(dev, 16*4, &socket->saved_state[16]); - pci_read_config_dword(dev, 17*4, &socket->saved_state[17]); - pci_set_power_state(dev, 3); + pci_save_state(dev); + pci_read_config_dword(dev, 16*4, &socket->saved_state[0]); + pci_read_config_dword(dev, 17*4, &socket->saved_state[1]); + pci_disable_device(dev); + + /* + * Some laptops (IBM T22) do not like us putting the Cardbus + * bridge into D3. At a guess, some other laptop will + * probably require this, so leave it commented out for now. + */ + /* pci_set_power_state(dev, 3); */ } return ret; @@ -1038,11 +1252,19 @@ static int yenta_dev_resume (struct pci_dev *dev) struct yenta_socket *socket = pci_get_drvdata(dev); if (socket) { + int rc; + pci_set_power_state(dev, 0); /* FIXME: pci_restore_state needs to have a better interface */ - pci_restore_state(dev, socket->saved_state); - pci_write_config_dword(dev, 16*4, socket->saved_state[16]); - pci_write_config_dword(dev, 17*4, socket->saved_state[17]); + pci_restore_state(dev); + pci_write_config_dword(dev, 16*4, socket->saved_state[0]); + pci_write_config_dword(dev, 17*4, socket->saved_state[1]); + + rc = pci_enable_device(dev); + if (rc) + return rc; + + pci_set_master(dev); if (socket->type && socket->type->restore_state) socket->type->restore_state(socket); @@ -1050,7 +1272,7 @@ static int yenta_dev_resume (struct pci_dev *dev) return pcmcia_socket_dev_resume(&dev->dev); } - +#endif #define CB_ID(vend,dev,type) \ { \ @@ -1071,6 +1293,7 @@ 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), @@ -1091,26 +1314,48 @@ static struct pci_device_id yenta_table [] = { CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250), CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250), - CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, TI12XX), - CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, TI12XX), - CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, TI1250), - CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, TI12XX), - + 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), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX), + CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX), + + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, TI12XX), + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, TI12XX), + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, TI12XX), + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, TI12XX), + CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE), + 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), @@ -1124,8 +1369,10 @@ static struct pci_driver yenta_cardbus_driver = { .id_table = yenta_table, .probe = yenta_probe, .remove = __devexit_p(yenta_close), +#ifdef CONFIG_PM .suspend = yenta_dev_suspend, .resume = yenta_dev_resume, +#endif };