diff options
Diffstat (limited to 'drivers/pcmcia/yenta_socket.c')
| -rw-r--r-- | drivers/pcmcia/yenta_socket.c | 77 |
1 files changed, 50 insertions, 27 deletions
diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index caf7159a54be..15f716a7968a 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); @@ -537,6 +548,11 @@ static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned typ unsigned offset; 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) @@ -544,7 +560,6 @@ static void yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned typ 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; @@ -853,11 +868,11 @@ 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 +938,9 @@ 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 +1011,14 @@ 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)); |