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path: root/drivers/idle/i7300_idle.c
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Diffstat (limited to 'drivers/idle/i7300_idle.c')
-rw-r--r--drivers/idle/i7300_idle.c72
1 files changed, 2 insertions, 70 deletions
diff --git a/drivers/idle/i7300_idle.c b/drivers/idle/i7300_idle.c
index 59d1bbc3cd3c..79d47f284cd6 100644
--- a/drivers/idle/i7300_idle.c
+++ b/drivers/idle/i7300_idle.c
@@ -25,6 +25,7 @@
25#include <linux/delay.h> 25#include <linux/delay.h>
26#include <linux/debugfs.h> 26#include <linux/debugfs.h>
27#include <linux/stop_machine.h> 27#include <linux/stop_machine.h>
28#include <linux/i7300_idle.h>
28 29
29#include <asm/idle.h> 30#include <asm/idle.h>
30 31
@@ -505,77 +506,8 @@ static struct notifier_block i7300_idle_nb = {
505 .notifier_call = i7300_idle_notifier, 506 .notifier_call = i7300_idle_notifier,
506}; 507};
507 508
508/*
509 * I/O AT controls (PCI bus 0 device 8 function 0)
510 * DIMM controls (PCI bus 0 device 16 function 1)
511 */
512#define IOAT_BUS 0
513#define IOAT_DEVFN PCI_DEVFN(8, 0)
514#define MEMCTL_BUS 0
515#define MEMCTL_DEVFN PCI_DEVFN(16, 1)
516
517struct fbd_ioat {
518 unsigned int vendor;
519 unsigned int ioat_dev;
520};
521
522/*
523 * The i5000 chip-set has the same hooks as the i7300
524 * but support is disabled by default because this driver
525 * has not been validated on that platform.
526 */
527#define SUPPORT_I5000 0
528
529static const struct fbd_ioat fbd_ioat_list[] = {
530 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT_CNB},
531#if SUPPORT_I5000
532 {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IOAT},
533#endif
534 {0, 0}
535};
536
537/* table of devices that work with this driver */
538static const struct pci_device_id pci_tbl[] = {
539 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_FBD_CNB) },
540#if SUPPORT_I5000
541 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5000_ERR) },
542#endif
543 { } /* Terminating entry */
544};
545
546MODULE_DEVICE_TABLE(pci, pci_tbl); 509MODULE_DEVICE_TABLE(pci, pci_tbl);
547 510
548/* Check for known platforms with I/O-AT */
549static int __init i7300_idle_platform_probe(void)
550{
551 int i;
552
553 fbd_dev = pci_get_bus_and_slot(MEMCTL_BUS, MEMCTL_DEVFN);
554 if (!fbd_dev)
555 return -ENODEV;
556
557 for (i = 0; pci_tbl[i].vendor != 0; i++) {
558 if (fbd_dev->vendor == pci_tbl[i].vendor &&
559 fbd_dev->device == pci_tbl[i].device) {
560 break;
561 }
562 }
563 if (pci_tbl[i].vendor == 0)
564 return -ENODEV;
565
566 ioat_dev = pci_get_bus_and_slot(IOAT_BUS, IOAT_DEVFN);
567 if (!ioat_dev)
568 return -ENODEV;
569
570 for (i = 0; fbd_ioat_list[i].vendor != 0; i++) {
571 if (ioat_dev->vendor == fbd_ioat_list[i].vendor &&
572 ioat_dev->device == fbd_ioat_list[i].ioat_dev) {
573 return 0;
574 }
575 }
576 return -ENODEV;
577}
578
579int stats_open_generic(struct inode *inode, struct file *fp) 511int stats_open_generic(struct inode *inode, struct file *fp)
580{ 512{
581 fp->private_data = inode->i_private; 513 fp->private_data = inode->i_private;
@@ -617,7 +549,7 @@ static int __init i7300_idle_init(void)
617 cpus_clear(idle_cpumask); 549 cpus_clear(idle_cpumask);
618 total_us = 0; 550 total_us = 0;
619 551
620 if (i7300_idle_platform_probe()) 552 if (i7300_idle_platform_probe(&fbd_dev, &ioat_dev))
621 return -ENODEV; 553 return -ENODEV;
622 554
623 if (i7300_idle_thrt_save()) 555 if (i7300_idle_thrt_save())