diff options
Diffstat (limited to 'drivers/pcmcia/yenta_socket.c')
-rw-r--r-- | drivers/pcmcia/yenta_socket.c | 233 |
1 files changed, 153 insertions, 80 deletions
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index a8a9d954bcf..744e469a9ed 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -18,7 +18,6 @@ #include <linux/delay.h> #include <linux/module.h> -#include <pcmcia/version.h> #include <pcmcia/cs_types.h> #include <pcmcia/ss.h> #include <pcmcia/cs.h> @@ -32,6 +31,14 @@ 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) #else @@ -150,15 +157,16 @@ 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) { @@ -405,11 +413,13 @@ 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, struct pt_regs *regs) { + 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); @@ -426,20 +436,13 @@ 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); + + if (cb_event || csc) return IRQ_HANDLED; - } + return IRQ_NONE; } @@ -470,11 +473,22 @@ 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; @@ -486,10 +500,7 @@ static int yenta_sock_init(struct pcmcia_socket *sock) 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); @@ -516,60 +527,29 @@ 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; + u32 align, size, start, end; - 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 && !override_bios) { - 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; - } - - 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 { @@ -584,26 +564,107 @@ 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; i<PCI_BUS_NUM_RESOURCES; i++) { + struct resource * root = socket->dev->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 void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end) +{ + struct pci_bus *bus; + struct resource *root, *res; + u32 start, end; + unsigned mask; + + res = socket->dev->resource + PCI_BRIDGE_RESOURCES + nr; + /* Already allocated? */ + if (res->parent) + return; + + /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */ + mask = ~0xfff; + if (type & IORESOURCE_IO) + mask = ~3; + + bus = socket->dev->subordinate; + res->name = bus->name; + res->flags = type; + + start = config_readl(socket, addr_start) & mask; + end = config_readl(socket, addr_end) | ~mask; + if (start && end > start && !override_bios) { + res->start = start; + res->end = end; + root = pci_find_parent_resource(socket->dev, res); + if (root && (request_resource(root, res) == 0)) + return; + 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))) { + config_writel(socket, addr_start, res->start); + config_writel(socket, addr_end, res->end); + } + } 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))) { + config_writel(socket, addr_start, res->start); + config_writel(socket, addr_end, res->end); + } + /* 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))) { + config_writel(socket, addr_start, res->start); + config_writel(socket, addr_end, res->end); + } + } + 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; } /* @@ -611,10 +672,14 @@ 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 */ + yenta_allocate_res(socket, 0, IORESOURCE_IO, + PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0); + yenta_allocate_res(socket, 1, IORESOURCE_IO, + PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1); + yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH, + PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0); + yenta_allocate_res(socket, 3, IORESOURCE_MEM, + PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1); } @@ -853,11 +918,11 @@ 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); @@ -923,6 +988,9 @@ static int __devinit yenta_probe (struct pci_dev *dev, const struct pci_device_i 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; @@ -993,9 +1061,14 @@ 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)); |