*/
#include <linux/init.h>
#include <linux/pci.h>
-#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#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;
{
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)
{
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)
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..
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)
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) {
/* 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;
}
-static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static irqreturn_t yenta_interrupt(int irq, void *dev_id)
{
unsigned int events;
struct yenta_socket *socket = (struct yenta_socket *) dev_id;
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) {
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)
{
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);
}
static int yenta_sock_init(struct pcmcia_socket *sock)
{
struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
- 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);
* 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;
+ u32 align, size, start, end;
- 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;
-
- offset = 0x1c + 8*nr;
- bus = socket->dev->subordinate;
- 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 {
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 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;
}
/*
*/
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);
}
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;
}
}
{
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);
.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,
CARDBUS_TYPE_TI12XX,
CARDBUS_TYPE_TI1250,
CARDBUS_TYPE_RICOH,
+ CARDBUS_TYPE_TOPIC95,
CARDBUS_TYPE_TOPIC97,
CARDBUS_TYPE_O2MICRO,
+ CARDBUS_TYPE_ENE,
};
/*
* 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,
.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
};
{
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.
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;
/* 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;
}
cb_writel(socket, CB_SOCKET_EVENT, -1);
cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
-
+
msleep(100);
/* disable interrupts */
return (int) socket->probe_status;
}
+#endif /* CONFIG_YENTA_TI */
/*
*/
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;
if (isa_probe)
socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
else
socket->socket.irq_mask = 0;
- socket->socket.cb_dev = socket->dev;
printk(KERN_INFO "Yenta: ISA IRQ mask 0x%04x, PCI irq %d\n",
socket->socket.irq_mask, socket->cb_irq);
{
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 |
* - 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
{
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.dev.parent = &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;
/* 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);
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_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);
return ret;
}
-
+#ifdef CONFIG_PM
static int yenta_dev_suspend (struct pci_dev *dev, pm_message_t state)
{
struct yenta_socket *socket = pci_get_drvdata(dev);
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
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);
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);
}
return pcmcia_socket_dev_resume(&dev->dev);
}
-
+#endif
#define CB_ID(vend,dev,type) \
{ \
* 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),
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),
.id_table = yenta_table,
.probe = yenta_probe,
.remove = __devexit_p(yenta_close),
+#ifdef CONFIG_PM
.suspend = yenta_dev_suspend,
.resume = yenta_dev_resume,
+#endif
};
Code Review / linux-2.6.git / blobdiff