Accessing PCI device resources through sysfs
+--------------------------------------------
sysfs, usually mounted at /sys, provides access to PCI resources on platforms
that support it. For example, a given bus might look like this:
binary - file contains binary data
cpumask - file contains a cpumask type
-The read only files are informational, writes to them will be ignored.
-Writable files can be used to perform actions on the device (e.g. changing
-config space, detaching a device). mmapable files are available via an
-mmap of the file at offset 0 and can be used to do actual device programming
-from userspace. Note that some platforms don't support mmapping of certain
-resources, so be sure to check the return value from any attempted mmap.
+The read only files are informational, writes to them will be ignored, with
+the exception of the 'rom' file. Writable files can be used to perform
+actions on the device (e.g. changing config space, detaching a device).
+mmapable files are available via an mmap of the file at offset 0 and can be
+used to do actual device programming from userspace. Note that some platforms
+don't support mmapping of certain resources, so be sure to check the return
+value from any attempted mmap.
+
+The 'rom' file is special in that it provides read-only access to the device's
+ROM file, if available. It's disabled by default, however, so applications
+should write the string "1" to the file to enable it before attempting a read
+call, and disable it following the access by writing "0" to the file.
Accessing legacy resources through sysfs
+----------------------------------------
Legacy I/O port and ISA memory resources are also provided in sysfs if the
underlying platform supports them. They're located in the PCI class heirarchy,
to access legacy memory space.
Supporting PCI access on new platforms
+--------------------------------------
In order to support PCI resource mapping as described above, Linux platform
code must define HAVE_PCI_MMAP and provide a pci_mmap_page_range function.
--- /dev/null
+
+ PCI Error Recovery
+ ------------------
+ May 31, 2005
+
+ Current document maintainer:
+ Linas Vepstas <linas@austin.ibm.com>
+
+
+Some PCI bus controllers are able to detect certain "hard" PCI errors
+on the bus, such as parity errors on the data and address busses, as
+well as SERR and PERR errors. These chipsets are then able to disable
+I/O to/from the affected device, so that, for example, a bad DMA
+address doesn't end up corrupting system memory. These same chipsets
+are also able to reset the affected PCI device, and return it to
+working condition. This document describes a generic API form
+performing error recovery.
+
+The core idea is that after a PCI error has been detected, there must
+be a way for the kernel to coordinate with all affected device drivers
+so that the pci card can be made operational again, possibly after
+performing a full electrical #RST of the PCI card. The API below
+provides a generic API for device drivers to be notified of PCI
+errors, and to be notified of, and respond to, a reset sequence.
+
+Preliminary sketch of API, cut-n-pasted-n-modified email from
+Ben Herrenschmidt, circa 5 april 2005
+
+The error recovery API support is exposed to the driver in the form of
+a structure of function pointers pointed to by a new field in struct
+pci_driver. The absence of this pointer in pci_driver denotes an
+"non-aware" driver, behaviour on these is platform dependant.
+Platforms like ppc64 can try to simulate pci hotplug remove/add.
+
+The definition of "pci_error_token" is not covered here. It is based on
+Seto's work on the synchronous error detection. We still need to define
+functions for extracting infos out of an opaque error token. This is
+separate from this API.
+
+This structure has the form:
+
+struct pci_error_handlers
+{
+ int (*error_detected)(struct pci_dev *dev, pci_error_token error);
+ int (*mmio_enabled)(struct pci_dev *dev);
+ int (*resume)(struct pci_dev *dev);
+ int (*link_reset)(struct pci_dev *dev);
+ int (*slot_reset)(struct pci_dev *dev);
+};
+
+A driver doesn't have to implement all of these callbacks. The
+only mandatory one is error_detected(). If a callback is not
+implemented, the corresponding feature is considered unsupported.
+For example, if mmio_enabled() and resume() aren't there, then the
+driver is assumed as not doing any direct recovery and requires
+a reset. If link_reset() is not implemented, the card is assumed as
+not caring about link resets, in which case, if recover is supported,
+the core can try recover (but not slot_reset() unless it really did
+reset the slot). If slot_reset() is not supported, link_reset() can
+be called instead on a slot reset.
+
+At first, the call will always be :
+
+ 1) error_detected()
+
+ Error detected. This is sent once after an error has been detected. At
+this point, the device might not be accessible anymore depending on the
+platform (the slot will be isolated on ppc64). The driver may already
+have "noticed" the error because of a failing IO, but this is the proper
+"synchronisation point", that is, it gives a chance to the driver to
+cleanup, waiting for pending stuff (timers, whatever, etc...) to
+complete; it can take semaphores, schedule, etc... everything but touch
+the device. Within this function and after it returns, the driver
+shouldn't do any new IOs. Called in task context. This is sort of a
+"quiesce" point. See note about interrupts at the end of this doc.
+
+ Result codes:
+ - PCIERR_RESULT_CAN_RECOVER:
+ Driever returns this if it thinks it might be able to recover
+ the HW by just banging IOs or if it wants to be given
+ a chance to extract some diagnostic informations (see
+ below).
+ - PCIERR_RESULT_NEED_RESET:
+ Driver returns this if it thinks it can't recover unless the
+ slot is reset.
+ - PCIERR_RESULT_DISCONNECT:
+ Return this if driver thinks it won't recover at all,
+ (this will detach the driver ? or just leave it
+ dangling ? to be decided)
+
+So at this point, we have called error_detected() for all drivers
+on the segment that had the error. On ppc64, the slot is isolated. What
+happens now typically depends on the result from the drivers. If all
+drivers on the segment/slot return PCIERR_RESULT_CAN_RECOVER, we would
+re-enable IOs on the slot (or do nothing special if the platform doesn't
+isolate slots) and call 2). If not and we can reset slots, we go to 4),
+if neither, we have a dead slot. If it's an hotplug slot, we might
+"simulate" reset by triggering HW unplug/replug though.
+
+>>> Current ppc64 implementation assumes that a device driver will
+>>> *not* schedule or semaphore in this routine; the current ppc64
+>>> implementation uses one kernel thread to notify all devices;
+>>> thus, of one device sleeps/schedules, all devices are affected.
+>>> Doing better requires complex multi-threaded logic in the error
+>>> recovery implementation (e.g. waiting for all notification threads
+>>> to "join" before proceeding with recovery.) This seems excessively
+>>> complex and not worth implementing.
+
+>>> The current ppc64 implementation doesn't much care if the device
+>>> attempts i/o at this point, or not. I/O's will fail, returning
+>>> a value of 0xff on read, and writes will be dropped. If the device
+>>> driver attempts more than 10K I/O's to a frozen adapter, it will
+>>> assume that the device driver has gone into an infinite loop, and
+>>> it will panic the the kernel.
+
+ 2) mmio_enabled()
+
+ This is the "early recovery" call. IOs are allowed again, but DMA is
+not (hrm... to be discussed, I prefer not), with some restrictions. This
+is NOT a callback for the driver to start operations again, only to
+peek/poke at the device, extract diagnostic information, if any, and
+eventually do things like trigger a device local reset or some such,
+but not restart operations. This is sent if all drivers on a segment
+agree that they can try to recover and no automatic link reset was
+performed by the HW. If the platform can't just re-enable IOs without
+a slot reset or a link reset, it doesn't call this callback and goes
+directly to 3) or 4). All IOs should be done _synchronously_ from
+within this callback, errors triggered by them will be returned via
+the normal pci_check_whatever() api, no new error_detected() callback
+will be issued due to an error happening here. However, such an error
+might cause IOs to be re-blocked for the whole segment, and thus
+invalidate the recovery that other devices on the same segment might
+have done, forcing the whole segment into one of the next states,
+that is link reset or slot reset.
+
+ Result codes:
+ - PCIERR_RESULT_RECOVERED
+ Driver returns this if it thinks the device is fully
+ functionnal and thinks it is ready to start
+ normal driver operations again. There is no
+ guarantee that the driver will actually be
+ allowed to proceed, as another driver on the
+ same segment might have failed and thus triggered a
+ slot reset on platforms that support it.
+
+ - PCIERR_RESULT_NEED_RESET
+ Driver returns this if it thinks the device is not
+ recoverable in it's current state and it needs a slot
+ reset to proceed.
+
+ - PCIERR_RESULT_DISCONNECT
+ Same as above. Total failure, no recovery even after
+ reset driver dead. (To be defined more precisely)
+
+>>> The current ppc64 implementation does not implement this callback.
+
+ 3) link_reset()
+
+ This is called after the link has been reset. This is typically
+a PCI Express specific state at this point and is done whenever a
+non-fatal error has been detected that can be "solved" by resetting
+the link. This call informs the driver of the reset and the driver
+should check if the device appears to be in working condition.
+This function acts a bit like 2) mmio_enabled(), in that the driver
+is not supposed to restart normal driver I/O operations right away.
+Instead, it should just "probe" the device to check it's recoverability
+status. If all is right, then the core will call resume() once all
+drivers have ack'd link_reset().
+
+ Result codes:
+ (identical to mmio_enabled)
+
+>>> The current ppc64 implementation does not implement this callback.
+
+ 4) slot_reset()
+
+ This is called after the slot has been soft or hard reset by the
+platform. A soft reset consists of asserting the adapter #RST line
+and then restoring the PCI BARs and PCI configuration header. If the
+platform supports PCI hotplug, then it might instead perform a hard
+reset by toggling power on the slot off/on. This call gives drivers
+the chance to re-initialize the hardware (re-download firmware, etc.),
+but drivers shouldn't restart normal I/O processing operations at
+this point. (See note about interrupts; interrupts aren't guaranteed
+to be delivered until the resume() callback has been called). If all
+device drivers report success on this callback, the patform will call
+resume() to complete the error handling and let the driver restart
+normal I/O processing.
+
+A driver can still return a critical failure for this function if
+it can't get the device operational after reset. If the platform
+previously tried a soft reset, it migh now try a hard reset (power
+cycle) and then call slot_reset() again. It the device still can't
+be recovered, there is nothing more that can be done; the platform
+will typically report a "permanent failure" in such a case. The
+device will be considered "dead" in this case.
+
+ Result codes:
+ - PCIERR_RESULT_DISCONNECT
+ Same as above.
+
+>>> The current ppc64 implementation does not try a power-cycle reset
+>>> if the driver returned PCIERR_RESULT_DISCONNECT. However, it should.
+
+ 5) resume()
+
+ This is called if all drivers on the segment have returned
+PCIERR_RESULT_RECOVERED from one of the 3 prevous callbacks.
+That basically tells the driver to restart activity, tht everything
+is back and running. No result code is taken into account here. If
+a new error happens, it will restart a new error handling process.
+
+That's it. I think this covers all the possibilities. The way those
+callbacks are called is platform policy. A platform with no slot reset
+capability for example may want to just "ignore" drivers that can't
+recover (disconnect them) and try to let other cards on the same segment
+recover. Keep in mind that in most real life cases, though, there will
+be only one driver per segment.
+
+Now, there is a note about interrupts. If you get an interrupt and your
+device is dead or has been isolated, there is a problem :)
+
+After much thinking, I decided to leave that to the platform. That is,
+the recovery API only precies that:
+
+ - There is no guarantee that interrupt delivery can proceed from any
+device on the segment starting from the error detection and until the
+restart callback is sent, at which point interrupts are expected to be
+fully operational.
+
+ - There is no guarantee that interrupt delivery is stopped, that is, ad
+river that gets an interrupts after detecting an error, or that detects
+and error within the interrupt handler such that it prevents proper
+ack'ing of the interrupt (and thus removal of the source) should just
+return IRQ_NOTHANDLED. It's up to the platform to deal with taht
+condition, typically by masking the irq source during the duration of
+the error handling. It is expected that the platform "knows" which
+interrupts are routed to error-management capable slots and can deal
+with temporarily disabling that irq number during error processing (this
+isn't terribly complex). That means some IRQ latency for other devices
+sharing the interrupt, but there is simply no other way. High end
+platforms aren't supposed to share interrupts between many devices
+anyway :)
+
+
+Revised: 31 May 2005 Linas Vepstas <linas@austin.ibm.com>
L: linux-abi-devel@lists.sourceforge.net
S: Maintained
+PCI ERROR RECOVERY
+P: Linas Vepstas
+M: linas@austin.ibm.com
+L: linux-kernel@vger.kernel.org
+L: linux-pci@atrey.karlin.mff.cuni.cz
+S: Supported
+
PCI SOUND DRIVERS (ES1370, ES1371 and SONICVIBES)
P: Thomas Sailer
M: sailer@ife.ee.ethz.ch
* motherboard, by looking for a 21040 TULIP in slot 6, which is
* built into XLT and BRET/MAVERICK, but not available on ALCOR.
*/
- dev = pci_find_device(PCI_VENDOR_ID_DEC,
+ dev = pci_get_device(PCI_VENDOR_ID_DEC,
PCI_DEVICE_ID_DEC_TULIP,
NULL);
if (dev && dev->devfn == PCI_DEVFN(6,0)) {
printk(KERN_INFO "%s: Detected AS500 or XLT motherboard.\n",
__FUNCTION__);
}
+ pci_dev_put(dev);
}
struct pci_dev *dev = NULL;
/* Iterate through the devices, collecting IRQ levels. */
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ for_each_pci_dev(dev) {
if ((dev->class >> 16 == PCI_BASE_CLASS_BRIDGE) &&
(dev->class >> 8 != PCI_CLASS_BRIDGE_PCMCIA))
continue;
*/
dev = NULL;
- while ((dev = pci_find_device(PCI_VENDOR_ID_NCR, PCI_ANY_ID, dev))) {
- if (dev->device == PCI_DEVICE_ID_NCR_53C810
+ while ((dev = pci_get_device(PCI_VENDOR_ID_NCR, PCI_ANY_ID, dev))) {
+ if (dev->device == PCI_DEVICE_ID_NCR_53C810
|| dev->device == PCI_DEVICE_ID_NCR_53C815
|| dev->device == PCI_DEVICE_ID_NCR_53C820
|| dev->device == PCI_DEVICE_ID_NCR_53C825) {
u16 command;
struct resource *r, *pr;
- while (dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev),
- dev != NULL
- ) {
+ for_each_pci_dev(dev) {
pci_read_config_word(dev, PCI_COMMAND, &command);
for(idx = 0; idx < 6; idx++) {
r = &dev->resource[idx];
int idx;
struct resource *r;
- while (dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev),
- dev != NULL
- ) {
+ for_each_pci_dev(dev) {
int class = dev->class >> 8;
/* Don't touch classless devices and host bridges */
struct pci_dev *dev = NULL;
uint8_t line, pin;
- while (dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev),
- dev != NULL
- ) {
+ for_each_pci_dev(dev) {
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (pin) {
dev->irq = pci_bus0_irq_routing[PCI_SLOT(dev->devfn)][pin - 1];
{
printk(KERN_INFO NAME ": NatSemi SCx200 Driver\n");
- return pci_module_init(&scx200_pci_driver);
+ return pci_register_driver(&scx200_pci_driver);
}
static void __exit scx200_cleanup(void)
* don't use pci_enable_device().
*/
printk(KERN_INFO "PCI: Routing PCI interrupts for all devices because \"pci=routeirq\" specified\n");
- while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL)
+ for_each_pci_dev(dev)
acpi_pci_irq_enable(dev);
} else
printk(KERN_INFO "PCI: If a device doesn't work, try \"pci=routeirq\". If it helps, post a report\n");
DMI_MATCH(DMI_PRODUCT_VERSION, "PSM4"),
},
},
+ {
+ .ident = "Toshiba A40 based laptop",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "PSA40U"),
+ },
+ },
{ }
};
for (i=0; i < rt->size; i++)
sum += addr[i];
if (!sum) {
- DBG("PCI: Interrupt Routing Table found at 0x%p\n", rt);
+ DBG(KERN_DEBUG "PCI: Interrupt Routing Table found at 0x%p\n", rt);
return rt;
}
return NULL;
#ifdef DEBUG
{
int j;
- DBG("%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot);
+ DBG(KERN_DEBUG "%02x:%02x slot=%02x", e->bus, e->devfn/8, e->slot);
for(j=0; j<4; j++)
DBG(" %d:%02x/%04x", j, e->irq[j].link, e->irq[j].bitmap);
DBG("\n");
return;
eisa_irq_mask |= (1 << irq);
- printk("PCI: setting IRQ %u as level-triggered\n", irq);
+ printk(KERN_DEBUG "PCI: setting IRQ %u as level-triggered\n", irq);
val = inb(port);
if (!(val & mask)) {
- DBG(" -> edge");
+ DBG(KERN_DEBUG " -> edge");
outb(val | mask, port);
}
}
{
case PCI_DEVICE_ID_AL_M1533:
case PCI_DEVICE_ID_AL_M1563:
- printk("PCI: Using ALI IRQ Router\n");
- r->name = "ALI";
- r->get = pirq_ali_get;
- r->set = pirq_ali_set;
- return 1;
+ printk(KERN_DEBUG "PCI: Using ALI IRQ Router\n");
+ r->name = "ALI";
+ r->get = pirq_ali_get;
+ r->set = pirq_ali_set;
+ return 1;
}
return 0;
}
r->get = NULL;
r->set = NULL;
- DBG("PCI: Attempting to find IRQ router for %04x:%04x\n",
+ DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n",
rt->rtr_vendor, rt->rtr_device);
pirq_router_dev = pci_find_slot(rt->rtr_bus, rt->rtr_devfn);
if (!pirq_router_dev) {
- DBG("PCI: Interrupt router not found at %02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
+ DBG(KERN_DEBUG "PCI: Interrupt router not found at "
+ "%02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
return;
}
/* Find IRQ pin */
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
if (!pin) {
- DBG(" -> no interrupt pin\n");
+ DBG(KERN_DEBUG " -> no interrupt pin\n");
return 0;
}
pin = pin - 1;
if (!pirq_table)
return 0;
- DBG("IRQ for %s[%c]", pci_name(dev), 'A' + pin);
+ DBG(KERN_DEBUG "IRQ for %s[%c]", pci_name(dev), 'A' + pin);
info = pirq_get_info(dev);
if (!info) {
- DBG(" -> not found in routing table\n");
+ DBG(" -> not found in routing table\n" KERN_DEBUG);
return 0;
}
pirq = info->irq[pin].link;
mask = info->irq[pin].bitmap;
if (!pirq) {
- DBG(" -> not routed\n");
+ DBG(" -> not routed\n" KERN_DEBUG);
return 0;
}
DBG(" -> PIRQ %02x, mask %04x, excl %04x", pirq, mask, pirq_table->exclusive_irqs);
newirq = dev->irq;
if (newirq && !((1 << newirq) & mask)) {
if ( pci_probe & PCI_USE_PIRQ_MASK) newirq = 0;
- else printk(KERN_WARNING "PCI: IRQ %i for device %s doesn't match PIRQ mask - try pci=usepirqmask\n", newirq, pci_name(dev));
+ else printk("\n" KERN_WARNING
+ "PCI: IRQ %i for device %s doesn't match PIRQ mask "
+ "- try pci=usepirqmask\n" KERN_DEBUG, newirq,
+ pci_name(dev));
}
if (!newirq && assign) {
for (i = 0; i < 16; i++) {
struct pci_dev *dev = NULL;
u8 pin;
- DBG("PCI: IRQ fixup\n");
+ DBG(KERN_DEBUG "PCI: IRQ fixup\n");
while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
/*
* If the BIOS has set an out of range IRQ number, just ignore it.
* Also keep track of which IRQ's are already in use.
*/
if (dev->irq >= 16) {
- DBG("%s: ignoring bogus IRQ %d\n", pci_name(dev), dev->irq);
+ DBG(KERN_DEBUG "%s: ignoring bogus IRQ %d\n", pci_name(dev), dev->irq);
dev->irq = 0;
}
/* If the IRQ is already assigned to a PCI device, ignore its ISA use penalty */
static int __init pcibios_irq_init(void)
{
- DBG("PCI: IRQ init\n");
+ DBG(KERN_DEBUG "PCI: IRQ init\n");
if (pcibios_enable_irq || raw_pci_ops == NULL)
return 0;
{
int err;
- err = pci_module_init(&vrc4173_driver);
+ err = pci_register_driver(&vrc4173_driver);
if (err < 0)
return err;
u16 command;
struct resource *r;
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ for_each_pci_dev(dev) {
pci_read_config_word(dev, PCI_COMMAND, &command);
for (idx = 0; idx < 6; idx++) {
r = &dev->resource[idx];
int idx;
struct resource *r;
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
+ for_each_pci_dev(dev) {
int class = dev->class >> 8;
/* Don't touch classless devices and host bridges */
*/
if (!pci_to_OF_bus_map)
return 0;
- while ((dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
- if (pci_to_OF_bus_map[dev->bus->number] != *bus)
- continue;
- if (dev->devfn != *devfn)
- continue;
- *bus = dev->bus->number;
- return 0;
- }
+
+ for_each_pci_dev(dev)
+ if (pci_to_OF_bus_map[dev->bus->number] == *bus &&
+ dev->devfn == *devfn) {
+ *bus = dev->bus->number;
+ pci_dev_put(dev);
+ return 0;
+ }
+
return -ENODEV;
}
EXPORT_SYMBOL(pci_device_from_OF_node);
void __init
mpc85xx_cds_pcibios_fixup(void)
{
- struct pci_dev *dev = NULL;
+ struct pci_dev *dev;
u_char c;
- if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
+ if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C586_1, NULL))) {
/*
* U-Boot does not set the enable bits
*/
dev->irq = 14;
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ pci_dev_put(dev);
}
/*
* Force legacy USB interrupt routing
*/
- if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
+ if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C586_2, NULL))) {
dev->irq = 10;
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 10);
+ pci_dev_put(dev);
}
- if ((dev = pci_find_device(PCI_VENDOR_ID_VIA,
+ if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_82C586_2, dev))) {
dev->irq = 11;
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 11);
+ pci_dev_put(dev);
}
}
#endif /* CONFIG_PCI */
{
struct pci_dev *pdev = start;
- do {
- pdev = pci_find_device(PCI_VENDOR_ID_SUN, PCI_ANY_ID, pdev);
- if (pdev &&
- (pdev->device == PCI_DEVICE_ID_SUN_EBUS ||
- pdev->device == PCI_DEVICE_ID_SUN_RIO_EBUS))
+ while ((pdev = pci_get_device(PCI_VENDOR_ID_SUN, PCI_ANY_ID, pdev)))
+ if (pdev->device == PCI_DEVICE_ID_SUN_EBUS ||
+ pdev->device == PCI_DEVICE_ID_SUN_RIO_EBUS)
break;
- } while (pdev != NULL);
- if (pdev && (pdev->device == PCI_DEVICE_ID_SUN_RIO_EBUS))
- *is_rio_p = 1;
- else
- *is_rio_p = 0;
+ *is_rio_p = !!(pdev && (pdev->device == PCI_DEVICE_ID_SUN_RIO_EBUS));
return pdev;
}
ebus->is_rio = is_rio;
++num_ebus;
}
+ pci_dev_put(pdev); /* XXX for the case, when ebusnd is 0, is it OK? */
#ifdef CONFIG_SUN_AUXIO
auxio_probe();
if ((bridge->class >> 8) == PCI_CLASS_BRIDGE_CARDBUS) {
/* PC card has the same IRQ as its cardbridge */
- pci_read_config_byte(bridge, PCI_INTERRUPT_PIN,
- &bridge_pin);
+ bridge_pin = bridge->pin;
if (!bridge_pin) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No interrupt pin configured for device %s\n",
if (!dev)
return_VALUE(-EINVAL);
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ pin = dev->pin;
if (!pin) {
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"No interrupt pin configured for device %s\n",
if (!dev || !dev->bus)
return_VOID;
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ pin = dev->pin;
if (!pin)
return_VOID;
pin--;
{
int ret;
- ret = pci_module_init(&DAC960_pci_driver);
+ ret = pci_register_driver(&DAC960_pci_driver);
#ifdef DAC960_GAM_MINOR
if (!ret)
DAC960_gam_init();
printk(KERN_INFO DRIVER_NAME "\n");
/* Register for our PCI devices */
- return pci_module_init(&cciss_pci_driver);
+ return pci_register_driver(&cciss_pci_driver);
}
static void __exit cciss_cleanup(void)
static int __init carm_init(void)
{
- return pci_module_init(&carm_driver);
+ return pci_register_driver(&carm_driver);
}
static void __exit carm_exit(void)
printk(KERN_INFO DRIVER_VERSION " : " DRIVER_DESC "\n");
- retval = pci_module_init(&mm_pci_driver);
+ retval = pci_register_driver(&mm_pci_driver);
if (retval)
return -ENOMEM;
static int __init sm_vt8231_init(void)
{
- return pci_module_init(&vt8231_pci_driver);
+ return pci_register_driver(&vt8231_pci_driver);
}
static void __exit sm_vt8231_exit(void)
static int __init gemtek_pci_init_module( void )
{
- return pci_module_init( &gemtek_pci_driver );
+ return pci_register_driver( &gemtek_pci_driver );
}
static void __exit gemtek_pci_cleanup_module( void )
static int __init maxiradio_radio_init(void)
{
- return pci_module_init(&maxiradio_driver);
+ return pci_register_driver(&maxiradio_driver);
}
static void __exit maxiradio_radio_exit(void)
static int __init parport_serial_init (void)
{
- return pci_module_init (&parport_serial_pci_driver);
+ return pci_register_driver (&parport_serial_pci_driver);
}
static void __exit parport_serial_exit (void)
if (PCI_SLOT(dev->devfn) != slot->device)
continue;
if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
- dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+ dev->hdr_type == PCI_HEADER_TYPE_CARDBUS) {
max = pci_scan_bridge(bus, dev, max, pass);
+ if (pass && dev->subordinate)
+ pci_bus_size_bridges(dev->subordinate);
+ }
}
}
- pci_bus_size_bridges(bus);
pci_bus_assign_resources(bus);
acpiphp_sanitize_bus(bus);
pci_enable_bridges(bus);
u16 vendor_id;
struct work_struct int_task_event;
wait_queue_head_t queue; /* sleep & wake process */
+ struct dentry *dentry; /* debugfs dentry */
};
struct irq_mapping {
#define msg_button_ignore "PCI slot #%d - button press ignored. (action in progress...)\n"
-/* sysfs functions for the hotplug controller info */
-extern void cpqhp_create_ctrl_files (struct controller *ctrl);
+/* debugfs functions for the hotplug controller info */
+extern void cpqhp_initialize_debugfs (void);
+extern void cpqhp_shutdown_debugfs (void);
+extern void cpqhp_create_debugfs_files (struct controller *ctrl);
+extern void cpqhp_remove_debugfs_files (struct controller *ctrl);
/* controller functions */
extern void cpqhp_pushbutton_thread (unsigned long event_pointer);
void __iomem *smbios_start,
void __iomem *smbios_table)
{
- struct slot *new_slot;
+ struct slot *slot;
+ struct hotplug_slot *hotplug_slot;
+ struct hotplug_slot_info *hotplug_slot_info;
u8 number_of_slots;
u8 slot_device;
u8 slot_number;
slot_number = ctrl->first_slot;
while (number_of_slots) {
- new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
- if (!new_slot)
+ slot = kmalloc(sizeof(*slot), GFP_KERNEL);
+ if (!slot)
goto error;
- memset(new_slot, 0, sizeof(struct slot));
- new_slot->hotplug_slot = kmalloc(sizeof(*(new_slot->hotplug_slot)),
+ memset(slot, 0, sizeof(struct slot));
+ slot->hotplug_slot = kmalloc(sizeof(*(slot->hotplug_slot)),
GFP_KERNEL);
- if (!new_slot->hotplug_slot)
+ if (!slot->hotplug_slot)
goto error_slot;
- memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot));
+ hotplug_slot = slot->hotplug_slot;
+ memset(hotplug_slot, 0, sizeof(struct hotplug_slot));
- new_slot->hotplug_slot->info =
- kmalloc(sizeof(*(new_slot->hotplug_slot->info)),
+ hotplug_slot->info =
+ kmalloc(sizeof(*(hotplug_slot->info)),
GFP_KERNEL);
- if (!new_slot->hotplug_slot->info)
+ if (!hotplug_slot->info)
goto error_hpslot;
- memset(new_slot->hotplug_slot->info, 0,
+ hotplug_slot_info = hotplug_slot->info;
+ memset(hotplug_slot_info, 0,
sizeof(struct hotplug_slot_info));
- new_slot->hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
- if (!new_slot->hotplug_slot->name)
+ hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
+
+ if (!hotplug_slot->name)
goto error_info;
- new_slot->ctrl = ctrl;
- new_slot->bus = ctrl->bus;
- new_slot->device = slot_device;
- new_slot->number = slot_number;
- dbg("slot->number = %d\n",new_slot->number);
+ slot->ctrl = ctrl;
+ slot->bus = ctrl->bus;
+ slot->device = slot_device;
+ slot->number = slot_number;
+ dbg("slot->number = %d\n", slot->number);
slot_entry = get_SMBIOS_entry(smbios_start, smbios_table, 9,
slot_entry);
- while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) != new_slot->number)) {
+ while (slot_entry && (readw(slot_entry + SMBIOS_SLOT_NUMBER) !=
+ slot->number)) {
slot_entry = get_SMBIOS_entry(smbios_start,
smbios_table, 9, slot_entry);
}
- new_slot->p_sm_slot = slot_entry;
+ slot->p_sm_slot = slot_entry;
- init_timer(&new_slot->task_event);
- new_slot->task_event.expires = jiffies + 5 * HZ;
- new_slot->task_event.function = cpqhp_pushbutton_thread;
+ init_timer(&slot->task_event);
+ slot->task_event.expires = jiffies + 5 * HZ;
+ slot->task_event.function = cpqhp_pushbutton_thread;
//FIXME: these capabilities aren't used but if they are
// they need to be correctly implemented
- new_slot->capabilities |= PCISLOT_REPLACE_SUPPORTED;
- new_slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED;
+ slot->capabilities |= PCISLOT_REPLACE_SUPPORTED;
+ slot->capabilities |= PCISLOT_INTERLOCK_SUPPORTED;
- if (is_slot64bit(new_slot))
- new_slot->capabilities |= PCISLOT_64_BIT_SUPPORTED;
- if (is_slot66mhz(new_slot))
- new_slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED;
+ if (is_slot64bit(slot))
+ slot->capabilities |= PCISLOT_64_BIT_SUPPORTED;
+ if (is_slot66mhz(slot))
+ slot->capabilities |= PCISLOT_66_MHZ_SUPPORTED;
if (ctrl->speed == PCI_SPEED_66MHz)
- new_slot->capabilities |= PCISLOT_66_MHZ_OPERATION;
+ slot->capabilities |= PCISLOT_66_MHZ_OPERATION;
- ctrl_slot = slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4);
+ ctrl_slot =
+ slot_device - (readb(ctrl->hpc_reg + SLOT_MASK) >> 4);
// Check presence
- new_slot->capabilities |= ((((~tempdword) >> 23) | ((~tempdword) >> 15)) >> ctrl_slot) & 0x02;
+ slot->capabilities |=
+ ((((~tempdword) >> 23) |
+ ((~tempdword) >> 15)) >> ctrl_slot) & 0x02;
// Check the switch state
- new_slot->capabilities |= ((~tempdword & 0xFF) >> ctrl_slot) & 0x01;
+ slot->capabilities |=
+ ((~tempdword & 0xFF) >> ctrl_slot) & 0x01;
// Check the slot enable
- new_slot->capabilities |= ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04;
+ slot->capabilities |=
+ ((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04;
/* register this slot with the hotplug pci core */
- new_slot->hotplug_slot->release = &release_slot;
- new_slot->hotplug_slot->private = new_slot;
- make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
- new_slot->hotplug_slot->ops = &cpqphp_hotplug_slot_ops;
+ hotplug_slot->release = &release_slot;
+ hotplug_slot->private = slot;
+ make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot);
+ hotplug_slot->ops = &cpqphp_hotplug_slot_ops;
- new_slot->hotplug_slot->info->power_status = get_slot_enabled(ctrl, new_slot);
- new_slot->hotplug_slot->info->attention_status = cpq_get_attention_status(ctrl, new_slot);
- new_slot->hotplug_slot->info->latch_status = cpq_get_latch_status(ctrl, new_slot);
- new_slot->hotplug_slot->info->adapter_status = get_presence_status(ctrl, new_slot);
+ hotplug_slot_info->power_status = get_slot_enabled(ctrl, slot);
+ hotplug_slot_info->attention_status =
+ cpq_get_attention_status(ctrl, slot);
+ hotplug_slot_info->latch_status =
+ cpq_get_latch_status(ctrl, slot);
+ hotplug_slot_info->adapter_status =
+ get_presence_status(ctrl, slot);
- dbg ("registering bus %d, dev %d, number %d, "
+ dbg("registering bus %d, dev %d, number %d, "
"ctrl->slot_device_offset %d, slot %d\n",
- new_slot->bus, new_slot->device,
- new_slot->number, ctrl->slot_device_offset,
+ slot->bus, slot->device,
+ slot->number, ctrl->slot_device_offset,
slot_number);
- result = pci_hp_register (new_slot->hotplug_slot);
+ result = pci_hp_register(hotplug_slot);
if (result) {
- err ("pci_hp_register failed with error %d\n", result);
+ err("pci_hp_register failed with error %d\n", result);
goto error_name;
}
- new_slot->next = ctrl->slot;
- ctrl->slot = new_slot;
+ slot->next = ctrl->slot;
+ ctrl->slot = slot;
number_of_slots--;
slot_device++;
}
return 0;
-
error_name:
- kfree(new_slot->hotplug_slot->name);
+ kfree(hotplug_slot->name);
error_info:
- kfree(new_slot->hotplug_slot->info);
+ kfree(hotplug_slot_info);
error_hpslot:
- kfree(new_slot->hotplug_slot);
+ kfree(hotplug_slot);
error_slot:
- kfree(new_slot);
+ kfree(slot);
error:
return result;
}
old_slot = next_slot;
}
+ cpqhp_remove_debugfs_files(ctrl);
+
//Free IRQ associated with hot plug device
free_irq(ctrl->interrupt, ctrl);
//Unmap the memory
// Done with exclusive hardware access
up(&ctrl->crit_sect);
- cpqhp_create_ctrl_files(ctrl);
+ cpqhp_create_debugfs_files(ctrl);
return 0;
cpqhp_debug = debug;
info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
+ cpqhp_initialize_debugfs();
result = pci_register_driver(&cpqhpc_driver);
dbg("pci_register_driver = %d\n", result);
return result;
dbg("pci_unregister_driver\n");
pci_unregister_driver(&cpqhpc_driver);
+ cpqhp_shutdown_debugfs();
}
hold_mem_node = NULL;
}
- /* If we have prefetchable memory resources copy them and
- * fill in the bridge's memory range registers. Otherwise,
- * fill in the range registers with values that disable them. */
- if (p_mem_node) {
- memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
- p_mem_node->next = NULL;
-
- /* set Pre Mem base and Limit registers */
- temp_word = p_mem_node->base >> 16;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
-
- temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
- } else {
- temp_word = 0xFFFF;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
+ memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
+ p_mem_node->next = NULL;
- temp_word = 0x0000;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
+ /* set Pre Mem base and Limit registers */
+ temp_word = p_mem_node->base >> 16;
+ rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
- kfree(hold_p_mem_node);
- hold_p_mem_node = NULL;
- }
+ temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16;
+ rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
/* Adjust this to compensate for extra adjustment in first loop */
irqs.barber_pole--;
#include <linux/proc_fs.h>
#include <linux/workqueue.h>
#include <linux/pci.h>
+#include <linux/debugfs.h>
#include "cpqphp.h"
-
-/* A few routines that create sysfs entries for the hot plug controller */
-
-static ssize_t show_ctrl (struct device *dev, struct device_attribute *attr, char *buf)
+static int show_ctrl (struct controller *ctrl, char *buf)
{
- struct pci_dev *pci_dev;
- struct controller *ctrl;
- char * out = buf;
+ char *out = buf;
int index;
struct pci_resource *res;
- pci_dev = container_of (dev, struct pci_dev, dev);
- ctrl = pci_get_drvdata(pci_dev);
-
out += sprintf(buf, "Free resources: memory\n");
index = 11;
res = ctrl->mem_head;
return out - buf;
}
-static DEVICE_ATTR (ctrl, S_IRUGO, show_ctrl, NULL);
-static ssize_t show_dev (struct device *dev, struct device_attribute *attr, char *buf)
+static int show_dev (struct controller *ctrl, char *buf)
{
- struct pci_dev *pci_dev;
- struct controller *ctrl;
char * out = buf;
int index;
struct pci_resource *res;
struct pci_func *new_slot;
struct slot *slot;
- pci_dev = container_of (dev, struct pci_dev, dev);
- ctrl = pci_get_drvdata(pci_dev);
-
- slot=ctrl->slot;
+ slot = ctrl->slot;
while (slot) {
new_slot = cpqhp_slot_find(slot->bus, slot->device, 0);
return out - buf;
}
-static DEVICE_ATTR (dev, S_IRUGO, show_dev, NULL);
-void cpqhp_create_ctrl_files (struct controller *ctrl)
+static int spew_debug_info(struct controller *ctrl, char *data, int size)
{
- device_create_file (&ctrl->pci_dev->dev, &dev_attr_ctrl);
- device_create_file (&ctrl->pci_dev->dev, &dev_attr_dev);
+ int used;
+
+ used = size - show_ctrl(ctrl, data);
+ used = (size - used) - show_dev(ctrl, &data[used]);
+ return used;
+}
+
+struct ctrl_dbg {
+ int size;
+ char *data;
+ struct controller *ctrl;
+};
+
+#define MAX_OUTPUT (4*PAGE_SIZE)
+
+static int open(struct inode *inode, struct file *file)
+{
+ struct controller *ctrl = inode->u.generic_ip;
+ struct ctrl_dbg *dbg;
+ int retval = -ENOMEM;
+
+ lock_kernel();
+ dbg = kmalloc(sizeof(*dbg), GFP_KERNEL);
+ if (!dbg)
+ goto exit;
+ dbg->data = kmalloc(MAX_OUTPUT, GFP_KERNEL);
+ if (!dbg->data) {
+ kfree(dbg);
+ goto exit;
+ }
+ dbg->size = spew_debug_info(ctrl, dbg->data, MAX_OUTPUT);
+ file->private_data = dbg;
+ retval = 0;
+exit:
+ unlock_kernel();
+ return retval;
+}
+
+static loff_t lseek(struct file *file, loff_t off, int whence)
+{
+ struct ctrl_dbg *dbg;
+ loff_t new = -1;
+
+ lock_kernel();
+ dbg = file->private_data;
+
+ switch (whence) {
+ case 0:
+ new = off;
+ break;
+ case 1:
+ new = file->f_pos + off;
+ break;
+ }
+ if (new < 0 || new > dbg->size) {
+ unlock_kernel();
+ return -EINVAL;
+ }
+ unlock_kernel();
+ return (file->f_pos = new);
}
+
+static ssize_t read(struct file *file, char __user *buf,
+ size_t nbytes, loff_t *ppos)
+{
+ struct ctrl_dbg *dbg = file->private_data;
+ return simple_read_from_buffer(buf, nbytes, ppos, dbg->data, dbg->size);
+}
+
+static int release(struct inode *inode, struct file *file)
+{
+ struct ctrl_dbg *dbg = file->private_data;
+
+ kfree(dbg->data);
+ kfree(dbg);
+ return 0;
+}
+
+static struct file_operations debug_ops = {
+ .owner = THIS_MODULE,
+ .open = open,
+ .llseek = lseek,
+ .read = read,
+ .release = release,
+};
+
+static struct dentry *root;
+
+void cpqhp_initialize_debugfs(void)
+{
+ if (!root)
+ root = debugfs_create_dir("cpqhp", NULL);
+}
+
+void cpqhp_shutdown_debugfs(void)
+{
+ debugfs_remove(root);
+}
+
+void cpqhp_create_debugfs_files(struct controller *ctrl)
+{
+ ctrl->dentry = debugfs_create_file(ctrl->pci_dev->dev.bus_id, S_IRUGO, root, ctrl, &debug_ops);
+}
+
+void cpqhp_remove_debugfs_files(struct controller *ctrl)
+{
+ if (ctrl->dentry)
+ debugfs_remove(ctrl->dentry);
+ ctrl->dentry = NULL;
+}
+
debug ("io 32\n");
need_io_upper = TRUE;
}
- if ((io_base & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
+ if ((pfmem_base & PCI_PREF_RANGE_TYPE_MASK) == PCI_PREF_RANGE_TYPE_64) {
debug ("pfmem 64\n");
need_pfmem_upper = TRUE;
}
static int init_slots(struct controller *ctrl)
{
- struct slot *new_slot;
+ struct slot *slot;
+ struct hpc_ops *hpc_ops;
+ struct hotplug_slot *hotplug_slot;
+ struct hotplug_slot_info *hotplug_slot_info;
u8 number_of_slots;
u8 slot_device;
u32 slot_number;
slot_number = ctrl->first_slot;
while (number_of_slots) {
- new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
- if (!new_slot)
+ slot = kmalloc(sizeof(*slot), GFP_KERNEL);
+ if (!slot)
goto error;
- memset(new_slot, 0, sizeof(struct slot));
- new_slot->hotplug_slot =
- kmalloc(sizeof(*(new_slot->hotplug_slot)),
+ memset(slot, 0, sizeof(struct slot));
+ slot->hotplug_slot =
+ kmalloc(sizeof(*(slot->hotplug_slot)),
GFP_KERNEL);
- if (!new_slot->hotplug_slot)
+ if (!slot->hotplug_slot)
goto error_slot;
- memset(new_slot->hotplug_slot, 0, sizeof(struct hotplug_slot));
+ hotplug_slot = slot->hotplug_slot;
+ memset(hotplug_slot, 0, sizeof(struct hotplug_slot));
- new_slot->hotplug_slot->info =
- kmalloc(sizeof(*(new_slot->hotplug_slot->info)),
+ hotplug_slot->info =
+ kmalloc(sizeof(*(hotplug_slot->info)),
GFP_KERNEL);
- if (!new_slot->hotplug_slot->info)
+ if (!hotplug_slot->info)
goto error_hpslot;
- memset(new_slot->hotplug_slot->info, 0,
+ hotplug_slot_info = hotplug_slot->info;
+ memset(hotplug_slot_info, 0,
sizeof(struct hotplug_slot_info));
- new_slot->hotplug_slot->name = kmalloc(SLOT_NAME_SIZE,
- GFP_KERNEL);
- if (!new_slot->hotplug_slot->name)
+ hotplug_slot->name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
+ if (!hotplug_slot->name)
goto error_info;
- new_slot->ctrl = ctrl;
- new_slot->bus = ctrl->slot_bus;
- new_slot->device = slot_device;
- new_slot->hpc_ops = ctrl->hpc_ops;
+ slot->ctrl = ctrl;
+ slot->bus = ctrl->slot_bus;
+ slot->device = slot_device;
+ slot->hpc_ops = hpc_ops = ctrl->hpc_ops;
- new_slot->number = ctrl->first_slot;
- new_slot->hp_slot = slot_device - ctrl->slot_device_offset;
+ slot->number = ctrl->first_slot;
+ slot->hp_slot = slot_device - ctrl->slot_device_offset;
/* register this slot with the hotplug pci core */
- new_slot->hotplug_slot->private = new_slot;
- new_slot->hotplug_slot->release = &release_slot;
- make_slot_name(new_slot->hotplug_slot->name, SLOT_NAME_SIZE, new_slot);
- new_slot->hotplug_slot->ops = &pciehp_hotplug_slot_ops;
-
- new_slot->hpc_ops->get_power_status(new_slot, &(new_slot->hotplug_slot->info->power_status));
- new_slot->hpc_ops->get_attention_status(new_slot, &(new_slot->hotplug_slot->info->attention_status));
- new_slot->hpc_ops->get_latch_status(new_slot, &(new_slot->hotplug_slot->info->latch_status));
- new_slot->hpc_ops->get_adapter_status(new_slot, &(new_slot->hotplug_slot->info->adapter_status));
-
- dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x slot_device_offset=%x\n",
- new_slot->bus, new_slot->device, new_slot->hp_slot, new_slot->number, ctrl->slot_device_offset);
- result = pci_hp_register (new_slot->hotplug_slot);
+ hotplug_slot->private = slot;
+ hotplug_slot->release = &release_slot;
+ make_slot_name(hotplug_slot->name, SLOT_NAME_SIZE, slot);
+ hotplug_slot->ops = &pciehp_hotplug_slot_ops;
+
+ hpc_ops->get_power_status(slot,
+ &(hotplug_slot_info->power_status));
+ hpc_ops->get_attention_status(slot,
+ &(hotplug_slot_info->attention_status));
+ hpc_ops->get_latch_status(slot,
+ &(hotplug_slot_info->latch_status));
+ hpc_ops->get_adapter_status(slot,
+ &(hotplug_slot_info->adapter_status));
+
+ dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x "
+ "slot_device_offset=%x\n",
+ slot->bus, slot->device, slot->hp_slot, slot->number,
+ ctrl->slot_device_offset);
+ result = pci_hp_register(hotplug_slot);
if (result) {
err ("pci_hp_register failed with error %d\n", result);
goto error_name;
}
- new_slot->next = ctrl->slot;
- ctrl->slot = new_slot;
+ slot->next = ctrl->slot;
+ ctrl->slot = slot;
number_of_slots--;
slot_device++;
return 0;
error_name:
- kfree(new_slot->hotplug_slot->name);
+ kfree(hotplug_slot->name);
error_info:
- kfree(new_slot->hotplug_slot->info);
+ kfree(hotplug_slot_info);
error_hpslot:
- kfree(new_slot->hotplug_slot);
+ kfree(hotplug_slot);
error_slot:
- kfree(new_slot);
+ kfree(slot);
error:
return result;
}
}
-int hpdriver_context = 0;
+static int hpdriver_context = 0;
static void pciehp_remove (struct pcie_device *device)
{
slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_ON;
+ /* Enable detection that we turned off at slot power-off time */
if (!pciehp_poll_mode)
- slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ slot_cmd = slot_cmd |
+ PWR_FAULT_DETECT_ENABLE |
+ MRL_DETECT_ENABLE |
+ PRSN_DETECT_ENABLE |
+ HP_INTR_ENABLE;
retval = pcie_write_cmd(slot, slot_cmd);
slot_cmd = (slot_ctrl & ~PWR_CTRL) | POWER_OFF;
+ /*
+ * If we get MRL or presence detect interrupts now, the isr
+ * will notice the sticky power-fault bit too and issue power
+ * indicator change commands. This will lead to an endless loop
+ * of command completions, since the power-fault bit remains on
+ * till the slot is powered on again.
+ */
if (!pciehp_poll_mode)
- slot_cmd = slot_cmd | HP_INTR_ENABLE;
+ slot_cmd = (slot_cmd &
+ ~PWR_FAULT_DETECT_ENABLE &
+ ~MRL_DETECT_ENABLE &
+ ~PRSN_DETECT_ENABLE) | HP_INTR_ENABLE;
retval = pcie_write_cmd(slot, slot_cmd);
#include "../pci.h"
#include "pciehp.h"
+static int pciehp_add_bridge(struct pci_dev *dev)
+{
+ struct pci_bus *parent = dev->bus;
+ int pass, busnr, start = parent->secondary;
+ int end = parent->subordinate;
+
+ for (busnr = start; busnr <= end; busnr++) {
+ if (!pci_find_bus(pci_domain_nr(parent), busnr))
+ break;
+ }
+ if (busnr-- > end) {
+ err("No bus number available for hot-added bridge %s\n",
+ pci_name(dev));
+ return -1;
+ }
+ for (pass = 0; pass < 2; pass++)
+ busnr = pci_scan_bridge(parent, dev, busnr, pass);
+ if (!dev->subordinate)
+ return -1;
+ pci_bus_size_bridges(dev->subordinate);
+ pci_bus_assign_resources(parent);
+ pci_enable_bridges(parent);
+ pci_bus_add_devices(parent);
+ return 0;
+}
int pciehp_configure_device(struct slot *p_slot)
{
}
for (fn = 0; fn < 8; fn++) {
- if (!(dev = pci_find_slot(p_slot->bus,
- PCI_DEVFN(p_slot->device, fn))))
+ dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, fn));
+ if (!dev)
continue;
if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
err("Cannot hot-add display device %s\n",
}
if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
(dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
- /* Find an unused bus number for the new bridge */
- struct pci_bus *child;
- unsigned char busnr, start = parent->secondary;
- unsigned char end = parent->subordinate;
- for (busnr = start; busnr <= end; busnr++) {
- if (!pci_find_bus(pci_domain_nr(parent),
- busnr))
- break;
- }
- if (busnr >= end) {
- err("No free bus for hot-added bridge\n");
- continue;
- }
- child = pci_add_new_bus(parent, dev, busnr);
- if (!child) {
- err("Cannot add new bus for %s\n",
- pci_name(dev));
- continue;
- }
- child->subordinate = pci_do_scan_bus(child);
- pci_bus_size_bridges(child);
+ pciehp_add_bridge(dev);
}
/* TBD: program firmware provided _HPP values */
/* program_fw_provided_values(dev); */
pci_bus_assign_resources(parent);
pci_bus_add_devices(parent);
- pci_enable_bridges(parent);
return 0;
}
acpi_status status;
acpi_handle chandle, handle = DEVICE_ACPI_HANDLE(&(dev->dev));
struct pci_dev *pdev = dev;
+ struct pci_bus *parent;
u8 *path_name;
+
/*
* Per PCI firmware specification, we should run the ACPI _OSC
* method to get control of hotplug hardware before using it.
*/
if (!pdev || !pdev->bus->parent)
break;
+ parent = pdev->bus->parent;
dbg("Could not find %s in acpi namespace, trying parent\n",
pci_name(pdev));
- if (!pdev->bus->parent->self)
+ if (!parent->self)
/* Parent must be a host bridge */
handle = acpi_get_pci_rootbridge_handle(
- pci_domain_nr(pdev->bus->parent),
- pdev->bus->parent->number);
+ pci_domain_nr(parent),
+ parent->number);
else
handle = DEVICE_ACPI_HANDLE(
- &(pdev->bus->parent->self->dev));
- pdev = pdev->bus->parent->self;
+ &(parent->self->dev));
+ pdev = parent->self;
}
while (handle) {
return NULL;
}
-static void rpadlpar_claim_one_bus(struct pci_bus *b)
-{
- struct list_head *ld;
- struct pci_bus *child_bus;
-
- for (ld = b->devices.next; ld != &b->devices; ld = ld->next) {
- struct pci_dev *dev = pci_dev_b(ld);
- int i;
-
- for (i = 0; i < PCI_NUM_RESOURCES; i++) {
- struct resource *r = &dev->resource[i];
-
- if (r->parent || !r->start || !r->flags)
- continue;
- rpaphp_claim_resource(dev, i);
- }
- }
-
- list_for_each_entry(child_bus, &b->children, node)
- rpadlpar_claim_one_bus(child_bus);
-}
-
static struct pci_dev *dlpar_find_new_dev(struct pci_bus *parent,
struct device_node *dev_dn)
{
struct pci_controller *phb = pdn->phb;
struct pci_dev *dev = NULL;
- rpaphp_eeh_init_nodes(dn);
+ eeh_add_device_tree_early(dn);
+
/* Add EADS device to PHB bus, adding new entry to bus->devices */
dev = of_create_pci_dev(dn, phb->bus, pdn->devfn);
if (!dev) {
rpaphp_init_new_devs(dev->subordinate);
/* Claim new bus resources */
- rpadlpar_claim_one_bus(dev->bus);
+ pcibios_claim_one_bus(dev->bus);
/* ioremap() for child bus, which may or may not succeed */
(void) remap_bus_range(dev->bus);
}
EXPORT_SYMBOL_GPL(rpaphp_find_pci_bus);
-int rpaphp_claim_resource(struct pci_dev *dev, int resource)
-{
- struct resource *res = &dev->resource[resource];
- struct resource *root = pci_find_parent_resource(dev, res);
- char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
- int err = -EINVAL;
-
- if (root != NULL) {
- err = request_resource(root, res);
- }
-
- if (err) {
- err("PCI: %s region %d of %s %s [%lx:%lx]\n",
- root ? "Address space collision on" :
- "No parent found for",
- resource, dtype, pci_name(dev), res->start, res->end);
- }
- return err;
-}
-
-EXPORT_SYMBOL_GPL(rpaphp_claim_resource);
-
static int rpaphp_get_sensor_state(struct slot *slot, int *state)
{
int rc;
if (r->parent || !r->start || !r->flags)
continue;
- rpaphp_claim_resource(dev, i);
+ pci_claim_resource(dev, i);
}
}
}
return dev;
}
-void rpaphp_eeh_init_nodes(struct device_node *dn)
-{
- struct device_node *sib;
-
- for (sib = dn->child; sib; sib = sib->sibling)
- rpaphp_eeh_init_nodes(sib);
- eeh_add_device_early(dn);
- return;
-
-}
-EXPORT_SYMBOL_GPL(rpaphp_eeh_init_nodes);
-
static void print_slot_pci_funcs(struct pci_bus *bus)
{
struct device_node *dn;
if (!dn)
goto exit;
- rpaphp_eeh_init_nodes(dn);
+ eeh_add_device_tree_early(dn);
dev = rpaphp_pci_config_slot(bus);
if (!dev) {
err("%s: can't find any devices.\n", __FUNCTION__);
static int setup_pci_hotplug_slot_info(struct slot *slot)
{
+ struct hotplug_slot_info *hotplug_slot_info = slot->hotplug_slot->info;
+
dbg("%s Initilize the PCI slot's hotplug->info structure ...\n",
__FUNCTION__);
- rpaphp_get_power_status(slot, &slot->hotplug_slot->info->power_status);
+ rpaphp_get_power_status(slot, &hotplug_slot_info->power_status);
rpaphp_get_pci_adapter_status(slot, 1,
- &slot->hotplug_slot->info->
- adapter_status);
- if (slot->hotplug_slot->info->adapter_status == NOT_VALID) {
+ &hotplug_slot_info->adapter_status);
+ if (hotplug_slot_info->adapter_status == NOT_VALID) {
err("%s: NOT_VALID: skip dn->full_name=%s\n",
__FUNCTION__, slot->dn->full_name);
return -EINVAL;
enum pci_bus_speed speed;
u32 first_slot; /* First physical slot number */
u8 slot_bus; /* Bus where the slots handled by this controller sit */
+ u32 cap_offset;
+ unsigned long mmio_base;
+ unsigned long mmio_size;
+ volatile int cmd_busy;
};
struct hotplug_params {
static int get_attention_status (struct hotplug_slot *slot, u8 *value);
static int get_latch_status (struct hotplug_slot *slot, u8 *value);
static int get_adapter_status (struct hotplug_slot *slot, u8 *value);
+static int get_address (struct hotplug_slot *slot, u32 *value);
static int get_max_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
static int get_cur_bus_speed (struct hotplug_slot *slot, enum pci_bus_speed *value);
.get_attention_status = get_attention_status,
.get_latch_status = get_latch_status,
.get_adapter_status = get_adapter_status,
+ .get_address = get_address,
.get_max_bus_speed = get_max_bus_speed,
.get_cur_bus_speed = get_cur_bus_speed,
};
return 0;
}
+static int get_address (struct hotplug_slot *hotplug_slot, u32 *value)
+{
+ struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
+ struct pci_bus *bus = slot->ctrl->pci_dev->subordinate;
+
+ dbg("%s - physical_slot = %s\n", __FUNCTION__, hotplug_slot->name);
+
+ *value = (pci_domain_nr(bus) << 16) | (slot->bus << 8) | slot->device;
+
+ return 0;
+}
+
static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
{
struct slot *slot = get_slot (hotplug_slot, __FUNCTION__);
goto err_out_free_ctrl;
}
- ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */
-
pci_set_drvdata(pdev, ctrl);
ctrl->pci_bus = kmalloc (sizeof (*ctrl->pci_bus), GFP_KERNEL);
up(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
- wait_for_ctrl_irq (ctrl);
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
up(&ctrl->crit_sect);
return -1;
}
-
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
rc = p_slot->hpc_ops->check_cmd_status(ctrl);
if (rc) {
up(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
- wait_for_ctrl_irq (ctrl);
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
up(&ctrl->crit_sect);
return rc;
}
- wait_for_ctrl_irq (ctrl);
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
up(&ctrl->crit_sect);
return rc;
}
- wait_for_ctrl_irq (ctrl);
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
p_slot->hpc_ops->green_led_on(p_slot);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
-
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
up(&ctrl->crit_sect);
return rc;
}
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
rc = p_slot->hpc_ops->check_cmd_status(ctrl);
if (rc) {
up(&ctrl->crit_sect);
return rc;
}
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
rc = p_slot->hpc_ops->check_cmd_status(ctrl);
if (rc) {
up(&ctrl->crit_sect);
return rc;
}
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
p_slot->hpc_ops->green_led_off(p_slot);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (p_slot->ctrl);
-
/* Done with exclusive hardware access */
up(&p_slot->ctrl->crit_sect);
}
down(&ctrl->crit_sect);
p_slot->hpc_ops->green_led_on(p_slot);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
p_slot->hpc_ops->set_attention_status(p_slot, 0);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
-
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
break;
down(&ctrl->crit_sect);
p_slot->hpc_ops->green_led_off(p_slot);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
p_slot->hpc_ops->set_attention_status(p_slot, 0);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
/* blink green LED and turn off amber */
p_slot->hpc_ops->green_led_blink(p_slot);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
p_slot->hpc_ops->set_attention_status(p_slot, 0);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
-
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
down(&ctrl->crit_sect);
p_slot->hpc_ops->set_attention_status(p_slot, 1);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
p_slot->hpc_ops->green_led_off(p_slot);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
/* Done with exclusive hardware access */
up(&ctrl->crit_sect);
return;
}
+static inline int shpc_wait_cmd(struct controller *ctrl)
+{
+ int retval = 0;
+ unsigned int timeout_msec = shpchp_poll_mode ? 2000 : 1000;
+ unsigned long timeout = msecs_to_jiffies(timeout_msec);
+ int rc = wait_event_interruptible_timeout(ctrl->queue,
+ !ctrl->cmd_busy, timeout);
+ if (!rc) {
+ retval = -EIO;
+ err("Command not completed in %d msec\n", timeout_msec);
+ } else if (rc < 0) {
+ retval = -EINTR;
+ info("Command was interrupted by a signal\n");
+ }
+ ctrl->cmd_busy = 0;
+
+ return retval;
+}
+
static int shpc_write_cmd(struct slot *slot, u8 t_slot, u8 cmd)
{
struct php_ctlr_state_s *php_ctlr = slot->ctrl->hpc_ctlr_handle;
/* To make sure the Controller Busy bit is 0 before we send out the
* command.
*/
+ slot->ctrl->cmd_busy = 1;
writew(temp_word, php_ctlr->creg + CMD);
+ /*
+ * Wait for command completion.
+ */
+ retval = shpc_wait_cmd(slot->ctrl);
+
DBG_LEAVE_ROUTINE
return retval;
}
sec_bus_status = readw(php_ctlr->creg + SEC_BUS_CONFIG);
if (pi == 2) {
- *mode = (sec_bus_status & 0x0100) >> 7;
+ *mode = (sec_bus_status & 0x0100) >> 8;
} else {
retval = -1;
}
}
if (php_ctlr->pci_dev) {
iounmap(php_ctlr->creg);
- release_mem_region(pci_resource_start(php_ctlr->pci_dev, 0), pci_resource_len(php_ctlr->pci_dev, 0));
+ release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
php_ctlr->pci_dev = NULL;
}
if (intr_loc & 0x0001) {
/*
* Command Complete Interrupt Pending
- * RO only - clear by writing 0 to the Command Completion
+ * RO only - clear by writing 1 to the Command Completion
* Detect bit in Controller SERR-INT register
*/
temp_dword = readl(php_ctlr->creg + SERR_INTR_ENABLE);
- temp_dword &= 0xfffeffff;
+ temp_dword &= 0xfffdffff;
writel(temp_dword, php_ctlr->creg + SERR_INTR_ENABLE);
+ ctrl->cmd_busy = 0;
wake_up_interruptible(&ctrl->queue);
}
int retval = 0;
u8 pi;
u32 slot_avail1, slot_avail2;
- int slot_num;
DBG_ENTER_ROUTINE
slot_avail2 = readl(php_ctlr->creg + SLOT_AVAIL2);
if (pi == 2) {
- if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_533) >> 27) ) != 0 )
+ if (slot_avail2 & SLOT_133MHZ_PCIX_533)
bus_speed = PCIX_133MHZ_533;
- else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_533) >> 23) ) != 0 )
+ else if (slot_avail2 & SLOT_100MHZ_PCIX_533)
bus_speed = PCIX_100MHZ_533;
- else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_533) >> 19) ) != 0 )
+ else if (slot_avail2 & SLOT_66MHZ_PCIX_533)
bus_speed = PCIX_66MHZ_533;
- else if ((slot_num = ((slot_avail2 & SLOT_133MHZ_PCIX_266) >> 15) ) != 0 )
+ else if (slot_avail2 & SLOT_133MHZ_PCIX_266)
bus_speed = PCIX_133MHZ_266;
- else if ((slot_num = ((slot_avail2 & SLOT_100MHZ_PCIX_266) >> 11) ) != 0 )
+ else if (slot_avail2 & SLOT_100MHZ_PCIX_266)
bus_speed = PCIX_100MHZ_266;
- else if ((slot_num = ((slot_avail2 & SLOT_66MHZ_PCIX_266) >> 7) ) != 0 )
+ else if (slot_avail2 & SLOT_66MHZ_PCIX_266)
bus_speed = PCIX_66MHZ_266;
- else if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 )
+ else if (slot_avail1 & SLOT_133MHZ_PCIX)
bus_speed = PCIX_133MHZ;
- else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 )
+ else if (slot_avail1 & SLOT_100MHZ_PCIX)
bus_speed = PCIX_100MHZ;
- else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 )
+ else if (slot_avail1 & SLOT_66MHZ_PCIX)
bus_speed = PCIX_66MHZ;
- else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 )
+ else if (slot_avail2 & SLOT_66MHZ)
bus_speed = PCI_66MHZ;
- else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 )
+ else if (slot_avail1 & SLOT_33MHZ)
bus_speed = PCI_33MHZ;
else bus_speed = PCI_SPEED_UNKNOWN;
} else {
- if ((slot_num = ((slot_avail1 & SLOT_133MHZ_PCIX) >> 23) ) != 0 )
+ if (slot_avail1 & SLOT_133MHZ_PCIX)
bus_speed = PCIX_133MHZ;
- else if ((slot_num = ((slot_avail1 & SLOT_100MHZ_PCIX) >> 15) ) != 0 )
+ else if (slot_avail1 & SLOT_100MHZ_PCIX)
bus_speed = PCIX_100MHZ;
- else if ((slot_num = ((slot_avail1 & SLOT_66MHZ_PCIX) >> 7) ) != 0 )
+ else if (slot_avail1 & SLOT_66MHZ_PCIX)
bus_speed = PCIX_66MHZ;
- else if ((slot_num = (slot_avail2 & SLOT_66MHZ)) != 0 )
+ else if (slot_avail2 & SLOT_66MHZ)
bus_speed = PCI_66MHZ;
- else if ((slot_num = (slot_avail1 & SLOT_33MHZ)) != 0 )
+ else if (slot_avail1 & SLOT_33MHZ)
bus_speed = PCI_33MHZ;
else bus_speed = PCI_SPEED_UNKNOWN;
}
.check_cmd_status = hpc_check_cmd_status,
};
+inline static int shpc_indirect_creg_read(struct controller *ctrl, int index,
+ u32 *value)
+{
+ int rc;
+ u32 cap_offset = ctrl->cap_offset;
+ struct pci_dev *pdev = ctrl->pci_dev;
+
+ rc = pci_write_config_byte(pdev, cap_offset + DWORD_SELECT, index);
+ if (rc)
+ return rc;
+ return pci_read_config_dword(pdev, cap_offset + DWORD_DATA, value);
+}
+
int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
{
struct php_ctlr_state_s *php_ctlr, *p;
void *instance_id = ctrl;
- int rc;
+ int rc, num_slots = 0;
u8 hp_slot;
static int first = 1;
- u32 shpc_cap_offset, shpc_base_offset;
+ u32 shpc_base_offset;
u32 tempdword, slot_reg;
u8 i;
DBG_ENTER_ROUTINE
+ ctrl->pci_dev = pdev; /* pci_dev of the P2P bridge */
+
spin_lock_init(&list_lock);
php_ctlr = (struct php_ctlr_state_s *) kmalloc(sizeof(struct php_ctlr_state_s), GFP_KERNEL);
if ((pdev->vendor == PCI_VENDOR_ID_AMD) || (pdev->device ==
PCI_DEVICE_ID_AMD_GOLAM_7450)) {
- shpc_base_offset = 0; /* amd shpc driver doesn't use this; assume 0 */
+ /* amd shpc driver doesn't use Base Offset; assume 0 */
+ ctrl->mmio_base = pci_resource_start(pdev, 0);
+ ctrl->mmio_size = pci_resource_len(pdev, 0);
} else {
- if ((shpc_cap_offset = pci_find_capability(pdev, PCI_CAP_ID_SHPC)) == 0) {
- err("%s : shpc_cap_offset == 0\n", __FUNCTION__);
+ ctrl->cap_offset = pci_find_capability(pdev, PCI_CAP_ID_SHPC);
+ if (!ctrl->cap_offset) {
+ err("%s : cap_offset == 0\n", __FUNCTION__);
goto abort_free_ctlr;
}
- dbg("%s: shpc_cap_offset = %x\n", __FUNCTION__, shpc_cap_offset);
-
- rc = pci_write_config_byte(pdev, (u8)shpc_cap_offset + DWORD_SELECT , BASE_OFFSET);
+ dbg("%s: cap_offset = %x\n", __FUNCTION__, ctrl->cap_offset);
+
+ rc = shpc_indirect_creg_read(ctrl, 0, &shpc_base_offset);
if (rc) {
- err("%s : pci_word_config_byte failed\n", __FUNCTION__);
+ err("%s: cannot read base_offset\n", __FUNCTION__);
goto abort_free_ctlr;
}
-
- rc = pci_read_config_dword(pdev, (u8)shpc_cap_offset + DWORD_DATA, &shpc_base_offset);
+
+ rc = shpc_indirect_creg_read(ctrl, 3, &tempdword);
if (rc) {
- err("%s : pci_read_config_dword failed\n", __FUNCTION__);
+ err("%s: cannot read slot config\n", __FUNCTION__);
goto abort_free_ctlr;
}
+ num_slots = tempdword & SLOT_NUM;
+ dbg("%s: num_slots (indirect) %x\n", __FUNCTION__, num_slots);
- for (i = 0; i <= 14; i++) {
- rc = pci_write_config_byte(pdev, (u8)shpc_cap_offset + DWORD_SELECT , i);
- if (rc) {
- err("%s : pci_word_config_byte failed\n", __FUNCTION__);
- goto abort_free_ctlr;
- }
-
- rc = pci_read_config_dword(pdev, (u8)shpc_cap_offset + DWORD_DATA, &tempdword);
+ for (i = 0; i < 9 + num_slots; i++) {
+ rc = shpc_indirect_creg_read(ctrl, i, &tempdword);
if (rc) {
- err("%s : pci_read_config_dword failed\n", __FUNCTION__);
+ err("%s: cannot read creg (index = %d)\n",
+ __FUNCTION__, i);
goto abort_free_ctlr;
}
dbg("%s: offset %d: value %x\n", __FUNCTION__,i,
tempdword);
}
+
+ ctrl->mmio_base =
+ pci_resource_start(pdev, 0) + shpc_base_offset;
+ ctrl->mmio_size = 0x24 + 0x4 * num_slots;
}
if (first) {
if (pci_enable_device(pdev))
goto abort_free_ctlr;
- if (!request_mem_region(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0), MY_NAME)) {
+ if (!request_mem_region(ctrl->mmio_base, ctrl->mmio_size, MY_NAME)) {
err("%s: cannot reserve MMIO region\n", __FUNCTION__);
goto abort_free_ctlr;
}
- php_ctlr->creg = ioremap(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0));
+ php_ctlr->creg = ioremap(ctrl->mmio_base, ctrl->mmio_size);
if (!php_ctlr->creg) {
- err("%s: cannot remap MMIO region %lx @ %lx\n", __FUNCTION__, pci_resource_len(pdev, 0),
- pci_resource_start(pdev, 0) + shpc_base_offset);
- release_mem_region(pci_resource_start(pdev, 0) + shpc_base_offset, pci_resource_len(pdev, 0));
+ err("%s: cannot remap MMIO region %lx @ %lx\n", __FUNCTION__,
+ ctrl->mmio_size, ctrl->mmio_base);
+ release_mem_region(ctrl->mmio_base, ctrl->mmio_size);
goto abort_free_ctlr;
}
dbg("%s: php_ctlr->creg %p\n", __FUNCTION__, php_ctlr->creg);
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
int num, fn;
- dev = pci_find_slot(p_slot->bus, PCI_DEVFN(p_slot->device, 0));
+ dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));
if (dev) {
err("Device %s already exists at %x:%x, cannot hot-add\n",
pci_name(dev), p_slot->bus, p_slot->device);
+ pci_dev_put(dev);
return -EINVAL;
}
}
for (fn = 0; fn < 8; fn++) {
- if (!(dev = pci_find_slot(p_slot->bus,
- PCI_DEVFN(p_slot->device, fn))))
+ dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, fn));
+ if (!dev)
continue;
if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
err("Cannot hot-add display device %s\n",
pci_name(dev));
+ pci_dev_put(dev);
continue;
}
if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
}
if (busnr >= end) {
err("No free bus for hot-added bridge\n");
+ pci_dev_put(dev);
continue;
}
child = pci_add_new_bus(parent, dev, busnr);
if (!child) {
err("Cannot add new bus for %s\n",
pci_name(dev));
+ pci_dev_put(dev);
continue;
}
child->subordinate = pci_do_scan_bus(child);
pci_bus_size_bridges(child);
}
program_fw_provided_values(dev);
+ pci_dev_put(dev);
}
pci_bus_assign_resources(parent);
int rc = 0;
int j;
u8 bctl = 0;
-
+ struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
+
dbg("%s: bus/dev = %x/%x\n", __FUNCTION__, p_slot->bus, p_slot->device);
for (j=0; j<8 ; j++) {
- struct pci_dev* temp = pci_find_slot(p_slot->bus,
+ struct pci_dev* temp = pci_get_slot(parent,
(p_slot->device << 3) | j);
if (!temp)
continue;
if ((temp->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
err("Cannot remove display device %s\n",
pci_name(temp));
+ pci_dev_put(temp);
continue;
}
if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
if (bctl & PCI_BRIDGE_CTL_VGA) {
err("Cannot remove display device %s\n",
pci_name(temp));
+ pci_dev_put(temp);
continue;
}
}
pci_remove_bus_device(temp);
+ pci_dev_put(temp);
}
return rc;
}
#include <asm/dma.h> /* isa_dma_bridge_buggy */
#include "pci.h"
+#if 0
/**
* pci_bus_max_busnr - returns maximum PCI bus number of given bus' children
return max;
}
+#endif /* 0 */
+
static int __pci_find_next_cap(struct pci_bus *bus, unsigned int devfn, u8 pos, int cap)
{
u8 id;
{
u8 pin;
- pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ pin = dev->pin;
if (!pin)
return -1;
pin--;
EXPORT_SYMBOL(pci_enable_device_bars);
EXPORT_SYMBOL(pci_enable_device);
EXPORT_SYMBOL(pci_disable_device);
-EXPORT_SYMBOL(pci_max_busnr);
-EXPORT_SYMBOL(pci_bus_max_busnr);
EXPORT_SYMBOL(pci_find_capability);
EXPORT_SYMBOL(pci_bus_find_capability);
EXPORT_SYMBOL(pci_release_regions);
#ifdef CONFIG_PROC_FS
extern int pci_proc_attach_device(struct pci_dev *dev);
extern int pci_proc_detach_device(struct pci_dev *dev);
-extern int pci_proc_attach_bus(struct pci_bus *bus);
extern int pci_proc_detach_bus(struct pci_bus *bus);
#else
static inline int pci_proc_attach_device(struct pci_dev *dev) { return 0; }
static inline int pci_proc_detach_device(struct pci_dev *dev) { return 0; }
-static inline int pci_proc_attach_bus(struct pci_bus *bus) { return 0; }
static inline int pci_proc_detach_bus(struct pci_bus *bus) { return 0; }
#endif
/* Functions for PCI Hotplug drivers to use */
extern unsigned int pci_do_scan_bus(struct pci_bus *bus);
-extern int pci_remove_device_safe(struct pci_dev *dev);
-extern unsigned char pci_max_busnr(void);
-extern unsigned char pci_bus_max_busnr(struct pci_bus *bus);
extern int pci_bus_find_capability (struct pci_bus *bus, unsigned int devfn, int cap);
extern void pci_remove_legacy_files(struct pci_bus *bus);
device->driver = NULL;
device->driver_data = NULL;
device->release = release_pcie_device; /* callback to free pcie dev */
- sprintf(&device->bus_id[0], "pcie%02x",
- get_descriptor_id(port_type, service_type));
+ snprintf(device->bus_id, sizeof(device->bus_id), "%s:pcie%02x",
+ pci_name(parent), get_descriptor_id(port_type, service_type));
device->parent = &parent->dev;
}
if (base <= limit) {
res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) | IORESOURCE_IO;
- res->start = base;
- res->end = limit + 0xfff;
+ if (!res->start)
+ res->start = base;
+ if (!res->end)
+ res->end = limit + 0xfff;
}
res = child->resource[1];
{
struct pci_bus *child;
int is_cardbus = (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS);
- u32 buses, i;
+ u32 buses, i, j = 0;
u16 bctl;
pci_read_config_dword(dev, PCI_PRIMARY_BUS, &buses);
* as cards with a PCI-to-PCI bridge can be
* inserted later.
*/
- for (i=0; i<CARDBUS_RESERVE_BUSNR; i++)
+ for (i=0; i<CARDBUS_RESERVE_BUSNR; i++) {
+ struct pci_bus *parent = bus;
if (pci_find_bus(pci_domain_nr(bus),
max+i+1))
break;
+ while (parent->parent) {
+ if ((!pcibios_assign_all_busses()) &&
+ (parent->subordinate > max) &&
+ (parent->subordinate <= max+i)) {
+ j = 1;
+ }
+ parent = parent->parent;
+ }
+ if (j) {
+ /*
+ * Often, there are two cardbus bridges
+ * -- try to leave one valid bus number
+ * for each one.
+ */
+ i /= 2;
+ break;
+ }
+ }
max += i;
pci_fixup_parent_subordinate_busnr(child, max);
}
sprintf(child->name, (is_cardbus ? "PCI CardBus #%02x" : "PCI Bus #%02x"), child->number);
+ while (bus->parent) {
+ if ((child->subordinate > bus->subordinate) ||
+ (child->number > bus->subordinate) ||
+ (child->number < bus->number) ||
+ (child->subordinate < bus->number)) {
+ printk(KERN_WARNING "PCI: Bus #%02x (-#%02x) may be "
+ "hidden behind%s bridge #%02x (-#%02x)%s\n",
+ child->number, child->subordinate,
+ bus->self->transparent ? " transparent" : " ",
+ bus->number, bus->subordinate,
+ pcibios_assign_all_busses() ? " " :
+ " (try 'pci=assign-busses')");
+ }
+ bus = bus->parent;
+ }
+
return max;
}
unsigned char irq;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &irq);
+ dev->pin = irq;
if (irq)
pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
dev->irq = irq;
/* The PCI-to-PCI bridge spec requires that subtractive
decoding (i.e. transparent) bridge must have programming
interface code of 0x01. */
+ pci_read_irq(dev);
dev->transparent = ((dev->class & 0xff) == 1);
pci_read_bases(dev, 2, PCI_ROM_ADDRESS1);
break;
* reading the dword at 0x100 which must either be 0 or a valid extended
* capability header.
*/
-static int pci_cfg_space_size(struct pci_dev *dev)
+int pci_cfg_space_size(struct pci_dev *dev)
{
int pos;
u32 status;
return 0;
}
+#if 0
int pci_proc_attach_bus(struct pci_bus* bus)
{
struct proc_dir_entry *de = bus->procdir;
}
return 0;
}
+#endif /* 0 */
int pci_proc_detach_bus(struct pci_bus* bus)
{
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pci_proc_attach_device);
-EXPORT_SYMBOL(pci_proc_attach_bus);
EXPORT_SYMBOL(pci_proc_detach_bus);
#endif
pci_do_fixups(dev, start, end);
}
+/* Enable 1k I/O space granularity on the Intel P64H2 */
+static void __devinit quirk_p64h2_1k_io(struct pci_dev *dev)
+{
+ u16 en1k;
+ u8 io_base_lo, io_limit_lo;
+ unsigned long base, limit;
+ struct resource *res = dev->resource + PCI_BRIDGE_RESOURCES;
+
+ pci_read_config_word(dev, 0x40, &en1k);
+
+ if (en1k & 0x200) {
+ printk(KERN_INFO "PCI: Enable I/O Space to 1 KB Granularity\n");
+
+ pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
+ pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);
+ base = (io_base_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
+ limit = (io_limit_lo & (PCI_IO_RANGE_MASK | 0x0c)) << 8;
+
+ if (base <= limit) {
+ res->start = base;
+ res->end = limit + 0x3ff;
+ }
+ }
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
+
EXPORT_SYMBOL(pcie_mch_quirk);
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pci_fixup_device);
* in question is not being used by a driver.
* Returns 0 on success.
*/
+#if 0
int pci_remove_device_safe(struct pci_dev *dev)
{
if (pci_dev_driver(dev))
pci_destroy_dev(dev);
return 0;
}
-EXPORT_SYMBOL(pci_remove_device_safe);
+#endif /* 0 */
void pci_remove_bus(struct pci_bus *pci_bus)
{
{
vrc4173_cardu_slots = 0;
- return pci_module_init(&vrc4173_cardu_driver);
+ return pci_register_driver(&vrc4173_cardu_driver);
}
static void __devexit vrc4173_cardu_exit(void)
serial_txx9_register_ports(&serial_txx9_reg);
#ifdef ENABLE_SERIAL_TXX9_PCI
- ret = pci_module_init(&serial_txx9_pci_driver);
+ ret = pci_register_driver(&serial_txx9_pci_driver);
#endif
}
return ret;
#endif
output("CyblaFB version %s initializing\n", VERSION);
return pci_module_init(&cyblafb_pci_driver);
+ return pci_register_driver(&cyblafb_pci_driver);
}
static void __exit cyblafb_exit(void)
#define PCI_UNKNOWN ((pci_power_t __force) 5)
#define PCI_POWER_ERROR ((pci_power_t __force) -1)
+/** The pci_channel state describes connectivity between the CPU and
+ * the pci device. If some PCI bus between here and the pci device
+ * has crashed or locked up, this info is reflected here.
+ */
+typedef unsigned int __bitwise pci_channel_state_t;
+
+enum pci_channel_state {
+ /* I/O channel is in normal state */
+ pci_channel_io_normal = (__force pci_channel_state_t) 1,
+
+ /* I/O to channel is blocked */
+ pci_channel_io_frozen = (__force pci_channel_state_t) 2,
+
+ /* PCI card is dead */
+ pci_channel_io_perm_failure = (__force pci_channel_state_t) 3,
+};
+
/*
* The pci_dev structure is used to describe PCI devices.
*/
unsigned int class; /* 3 bytes: (base,sub,prog-if) */
u8 hdr_type; /* PCI header type (`multi' flag masked out) */
u8 rom_base_reg; /* which config register controls the ROM */
+ u8 pin; /* which interrupt pin this device uses */
struct pci_driver *driver; /* which driver has allocated this device */
u64 dma_mask; /* Mask of the bits of bus address this
this is D0-D3, D0 being fully functional,
and D3 being off. */
+ pci_channel_state_t error_state; /* current connectivity state */
struct device dev; /* Generic device interface */
/* device is compatible with these IDs */
unsigned int use_driver_data:1; /* pci_driver->driver_data is used */
};
+/* ---------------------------------------------------------------- */
+/** PCI Error Recovery System (PCI-ERS). If a PCI device driver provides
+ * a set fof callbacks in struct pci_error_handlers, then that device driver
+ * will be notified of PCI bus errors, and will be driven to recovery
+ * when an error occurs.
+ */
+
+typedef unsigned int __bitwise pci_ers_result_t;
+
+enum pci_ers_result {
+ /* no result/none/not supported in device driver */
+ PCI_ERS_RESULT_NONE = (__force pci_ers_result_t) 1,
+
+ /* Device driver can recover without slot reset */
+ PCI_ERS_RESULT_CAN_RECOVER = (__force pci_ers_result_t) 2,
+
+ /* Device driver wants slot to be reset. */
+ PCI_ERS_RESULT_NEED_RESET = (__force pci_ers_result_t) 3,
+
+ /* Device has completely failed, is unrecoverable */
+ PCI_ERS_RESULT_DISCONNECT = (__force pci_ers_result_t) 4,
+
+ /* Device driver is fully recovered and operational */
+ PCI_ERS_RESULT_RECOVERED = (__force pci_ers_result_t) 5,
+};
+
+/* PCI bus error event callbacks */
+struct pci_error_handlers
+{
+ /* PCI bus error detected on this device */
+ pci_ers_result_t (*error_detected)(struct pci_dev *dev,
+ enum pci_channel_state error);
+
+ /* MMIO has been re-enabled, but not DMA */
+ pci_ers_result_t (*mmio_enabled)(struct pci_dev *dev);
+
+ /* PCI Express link has been reset */
+ pci_ers_result_t (*link_reset)(struct pci_dev *dev);
+
+ /* PCI slot has been reset */
+ pci_ers_result_t (*slot_reset)(struct pci_dev *dev);
+
+ /* Device driver may resume normal operations */
+ void (*resume)(struct pci_dev *dev);
+};
+
+/* ---------------------------------------------------------------- */
+
struct module;
struct pci_driver {
struct list_head node;
int (*enable_wake) (struct pci_dev *dev, pci_power_t state, int enable); /* Enable wake event */
void (*shutdown) (struct pci_dev *dev);
+ struct pci_error_handlers *err_handler;
struct device_driver driver;
struct pci_dynids dynids;
};
void pci_walk_bus(struct pci_bus *top, void (*cb)(struct pci_dev *, void *),
void *userdata);
+int pci_cfg_space_size(struct pci_dev *dev);
/* kmem_cache style wrapper around pci_alloc_consistent() */
static int __init ad1889_init_module(void)
{
- return pci_module_init(&ad1889_driver);
+ return pci_register_driver(&ad1889_driver);
}
static void ad1889_exit_module(void)
digital ? "digital" : "",
analog && digital ? "+" : "",
analog ? "analog" : "");
- return pci_module_init(&btaudio_pci_driver);
+ return pci_register_driver(&btaudio_pci_driver);
}
static void btaudio_cleanup_module(void)
static int __init init_cmpci(void)
{
printk(KERN_INFO "cmpci: version $Revision: 6.82 $ time " __TIME__ " " __DATE__ "\n");
- return pci_module_init(&cm_driver);
+ return pci_register_driver(&cm_driver);
}
static void __exit cleanup_cmpci(void)
printk(KERN_INFO "cs4281: version v%d.%02d.%d time " __TIME__ " "
__DATE__ "\n", CS4281_MAJOR_VERSION, CS4281_MINOR_VERSION,
CS4281_ARCH);
- rtn = pci_module_init(&cs4281_pci_driver);
+ rtn = pci_register_driver(&cs4281_pci_driver);
CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
printk(KERN_INFO "cs4281: cs4281_init_module()- (%d)\n",rtn));
int rtn = 0;
CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
"cs46xx: cs46xx_init_module()+ \n"));
- rtn = pci_module_init(&cs46xx_pci_driver);
+ rtn = pci_register_driver(&cs46xx_pci_driver);
if(rtn == -ENODEV)
{
{
printk(KERN_INFO "Creative EMU10K1 PCI Audio Driver, version " DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n");
- return pci_module_init(&emu10k1_pci_driver);
+ return pci_register_driver(&emu10k1_pci_driver);
}
static void __exit emu10k1_cleanup_module(void)
static int __init init_es1370(void)
{
printk(KERN_INFO "es1370: version v0.38 time " __TIME__ " " __DATE__ "\n");
- return pci_module_init(&es1370_driver);
+ return pci_register_driver(&es1370_driver);
}
static void __exit cleanup_es1370(void)
static int __init init_es1371(void)
{
printk(KERN_INFO PFX "version v0.32 time " __TIME__ " " __DATE__ "\n");
- return pci_module_init(&es1371_driver);
+ return pci_register_driver(&es1371_driver);
}
static void __exit cleanup_es1371(void)
static int __init init_it8172(void)
{
info("version v0.5 time " __TIME__ " " __DATE__);
- return pci_module_init(&it8172_driver);
+ return pci_register_driver(&it8172_driver);
}
static void __exit cleanup_it8172(void)
static int __init kahlua_init_module(void)
{
printk(KERN_INFO "Cyrix Kahlua VSA1 XpressAudio support (c) Copyright 2003 Red Hat Inc\n");
- return pci_module_init(&kahlua_driver);
+ return pci_register_driver(&kahlua_driver);
}
static void __devexit kahlua_cleanup_module(void)
{
int rc;
- rc = pci_module_init(&maestro_pci_driver);
+ rc = pci_register_driver(&maestro_pci_driver);
if (rc < 0)
return rc;
static int __init init_vrc5477_ac97(void)
{
printk("Vrc5477 AC97 driver: version v0.2 time " __TIME__ " " __DATE__ " by Jun Sun\n");
- return pci_module_init(&vrc5477_ac97_driver);
+ return pci_register_driver(&vrc5477_ac97_driver);
}
static void __exit cleanup_vrc5477_ac97(void)
static int __init do_init_nm256(void)
{
printk (KERN_INFO "NeoMagic 256AV/256ZX audio driver, version 1.1p\n");
- return pci_module_init(&nm256_pci_driver);
+ return pci_register_driver(&nm256_pci_driver);
}
static void __exit cleanup_nm256 (void)
devices = ((devices-1) & RME96xx_MASK_DEVS) + 1;
printk(KERN_INFO RME_MESS" reserving %d dsp device(s)\n",devices);
numcards = 0;
- return pci_module_init(&rme96xx_driver);
+ return pci_register_driver(&rme96xx_driver);
}
static void __exit cleanup_rme96xx(void)
if (!(wavetable_mem = __get_free_pages(GFP_KERNEL, 20-PAGE_SHIFT)))
printk(KERN_INFO "sv: cannot allocate 1MB of contiguous nonpageable memory for wavetable data\n");
#endif
- return pci_module_init(&sv_driver);
+ return pci_register_driver(&sv_driver);
}
static void __exit cleanup_sonicvibes(void)
static int __init ymf_init_module(void)
{
- return pci_module_init(&ymfpci_driver);
+ return pci_register_driver(&ymfpci_driver);
}
static void __exit ymf_cleanup_module (void)
projects / linux-2.6-omap-h63xx.git / commitdiff