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-rw-r--r--drivers/infiniband/hw/ipath/ipath_driver.c289
1 files changed, 128 insertions, 161 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index 68fc9b5a4ad8..12cefa658f3b 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -517,33 +517,146 @@ bail:
517 return ret; 517 return ret;
518} 518}
519 519
520static void __devexit ipath_remove_one(struct pci_dev *pdev) 520static void __devexit cleanup_device(struct ipath_devdata *dd)
521{ 521{
522 struct ipath_devdata *dd; 522 int port;
523 523
524 ipath_cdbg(VERBOSE, "removing, pdev=%p\n", pdev); 524 ipath_shutdown_device(dd);
525 if (!pdev)
526 return;
527 525
528 dd = pci_get_drvdata(pdev); 526 if (*dd->ipath_statusp & IPATH_STATUS_CHIP_PRESENT) {
527 /* can't do anything more with chip; needs re-init */
528 *dd->ipath_statusp &= ~IPATH_STATUS_CHIP_PRESENT;
529 if (dd->ipath_kregbase) {
530 /*
531 * if we haven't already cleaned up before these are
532 * to ensure any register reads/writes "fail" until
533 * re-init
534 */
535 dd->ipath_kregbase = NULL;
536 dd->ipath_uregbase = 0;
537 dd->ipath_sregbase = 0;
538 dd->ipath_cregbase = 0;
539 dd->ipath_kregsize = 0;
540 }
541 ipath_disable_wc(dd);
542 }
529 543
530 if (dd->verbs_dev) { 544 if (dd->ipath_pioavailregs_dma) {
531 ipath_unregister_ib_device(dd->verbs_dev); 545 dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE,
532 dd->verbs_dev = NULL; 546 (void *) dd->ipath_pioavailregs_dma,
547 dd->ipath_pioavailregs_phys);
548 dd->ipath_pioavailregs_dma = NULL;
549 }
550 if (dd->ipath_dummy_hdrq) {
551 dma_free_coherent(&dd->pcidev->dev,
552 dd->ipath_pd[0]->port_rcvhdrq_size,
553 dd->ipath_dummy_hdrq, dd->ipath_dummy_hdrq_phys);
554 dd->ipath_dummy_hdrq = NULL;
555 }
556
557 if (dd->ipath_pageshadow) {
558 struct page **tmpp = dd->ipath_pageshadow;
559 dma_addr_t *tmpd = dd->ipath_physshadow;
560 int i, cnt = 0;
561
562 ipath_cdbg(VERBOSE, "Unlocking any expTID pages still "
563 "locked\n");
564 for (port = 0; port < dd->ipath_cfgports; port++) {
565 int port_tidbase = port * dd->ipath_rcvtidcnt;
566 int maxtid = port_tidbase + dd->ipath_rcvtidcnt;
567 for (i = port_tidbase; i < maxtid; i++) {
568 if (!tmpp[i])
569 continue;
570 pci_unmap_page(dd->pcidev, tmpd[i],
571 PAGE_SIZE, PCI_DMA_FROMDEVICE);
572 ipath_release_user_pages(&tmpp[i], 1);
573 tmpp[i] = NULL;
574 cnt++;
575 }
576 }
577 if (cnt) {
578 ipath_stats.sps_pageunlocks += cnt;
579 ipath_cdbg(VERBOSE, "There were still %u expTID "
580 "entries locked\n", cnt);
581 }
582 if (ipath_stats.sps_pagelocks ||
583 ipath_stats.sps_pageunlocks)
584 ipath_cdbg(VERBOSE, "%llu pages locked, %llu "
585 "unlocked via ipath_m{un}lock\n",
586 (unsigned long long)
587 ipath_stats.sps_pagelocks,
588 (unsigned long long)
589 ipath_stats.sps_pageunlocks);
590
591 ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n",
592 dd->ipath_pageshadow);
593 vfree(dd->ipath_pageshadow);
594 dd->ipath_pageshadow = NULL;
533 } 595 }
534 596
597 /*
598 * free any resources still in use (usually just kernel ports)
599 * at unload; we do for portcnt, not cfgports, because cfgports
600 * could have changed while we were loaded.
601 */
602 for (port = 0; port < dd->ipath_portcnt; port++) {
603 struct ipath_portdata *pd = dd->ipath_pd[port];
604 dd->ipath_pd[port] = NULL;
605 ipath_free_pddata(dd, pd);
606 }
607 kfree(dd->ipath_pd);
608 /*
609 * debuggability, in case some cleanup path tries to use it
610 * after this
611 */
612 dd->ipath_pd = NULL;
613}
614
615static void __devexit ipath_remove_one(struct pci_dev *pdev)
616{
617 struct ipath_devdata *dd = pci_get_drvdata(pdev);
618
619 ipath_cdbg(VERBOSE, "removing, pdev=%p, dd=%p\n", pdev, dd);
620
621 if (dd->verbs_dev)
622 ipath_unregister_ib_device(dd->verbs_dev);
623
535 ipath_diag_remove(dd); 624 ipath_diag_remove(dd);
536 ipath_user_remove(dd); 625 ipath_user_remove(dd);
537 ipathfs_remove_device(dd); 626 ipathfs_remove_device(dd);
538 ipath_device_remove_group(&pdev->dev, dd); 627 ipath_device_remove_group(&pdev->dev, dd);
628
539 ipath_cdbg(VERBOSE, "Releasing pci memory regions, dd %p, " 629 ipath_cdbg(VERBOSE, "Releasing pci memory regions, dd %p, "
540 "unit %u\n", dd, (u32) dd->ipath_unit); 630 "unit %u\n", dd, (u32) dd->ipath_unit);
541 if (dd->ipath_kregbase) { 631
542 ipath_cdbg(VERBOSE, "Unmapping kregbase %p\n", 632 cleanup_device(dd);
543 dd->ipath_kregbase); 633
544 iounmap((volatile void __iomem *) dd->ipath_kregbase); 634 /*
545 dd->ipath_kregbase = NULL; 635 * turn off rcv, send, and interrupts for all ports, all drivers
546 } 636 * should also hard reset the chip here?
637 * free up port 0 (kernel) rcvhdr, egr bufs, and eventually tid bufs
638 * for all versions of the driver, if they were allocated
639 */
640 if (pdev->irq) {
641 ipath_cdbg(VERBOSE,
642 "unit %u free_irq of irq %x\n",
643 dd->ipath_unit, pdev->irq);
644 free_irq(pdev->irq, dd);
645 } else
646 ipath_dbg("irq is 0, not doing free_irq "
647 "for unit %u\n", dd->ipath_unit);
648 /*
649 * we check for NULL here, because it's outside
650 * the kregbase check, and we need to call it
651 * after the free_irq. Thus it's possible that
652 * the function pointers were never initialized.
653 */
654 if (dd->ipath_f_cleanup)
655 /* clean up chip-specific stuff */
656 dd->ipath_f_cleanup(dd);
657
658 ipath_cdbg(VERBOSE, "Unmapping kregbase %p\n", dd->ipath_kregbase);
659 iounmap((volatile void __iomem *) dd->ipath_kregbase);
547 pci_release_regions(pdev); 660 pci_release_regions(pdev);
548 ipath_cdbg(VERBOSE, "calling pci_disable_device\n"); 661 ipath_cdbg(VERBOSE, "calling pci_disable_device\n");
549 pci_disable_device(pdev); 662 pci_disable_device(pdev);
@@ -1917,158 +2030,12 @@ bail:
1917 return ret; 2030 return ret;
1918} 2031}
1919 2032
1920static void cleanup_device(struct ipath_devdata *dd)
1921{
1922 int port;
1923
1924 ipath_shutdown_device(dd);
1925
1926 if (*dd->ipath_statusp & IPATH_STATUS_CHIP_PRESENT) {
1927 /* can't do anything more with chip; needs re-init */
1928 *dd->ipath_statusp &= ~IPATH_STATUS_CHIP_PRESENT;
1929 if (dd->ipath_kregbase) {
1930 /*
1931 * if we haven't already cleaned up before these are
1932 * to ensure any register reads/writes "fail" until
1933 * re-init
1934 */
1935 dd->ipath_kregbase = NULL;
1936 dd->ipath_uregbase = 0;
1937 dd->ipath_sregbase = 0;
1938 dd->ipath_cregbase = 0;
1939 dd->ipath_kregsize = 0;
1940 }
1941 ipath_disable_wc(dd);
1942 }
1943
1944 if (dd->ipath_pioavailregs_dma) {
1945 dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE,
1946 (void *) dd->ipath_pioavailregs_dma,
1947 dd->ipath_pioavailregs_phys);
1948 dd->ipath_pioavailregs_dma = NULL;
1949 }
1950 if (dd->ipath_dummy_hdrq) {
1951 dma_free_coherent(&dd->pcidev->dev,
1952 dd->ipath_pd[0]->port_rcvhdrq_size,
1953 dd->ipath_dummy_hdrq, dd->ipath_dummy_hdrq_phys);
1954 dd->ipath_dummy_hdrq = NULL;
1955 }
1956
1957 if (dd->ipath_pageshadow) {
1958 struct page **tmpp = dd->ipath_pageshadow;
1959 dma_addr_t *tmpd = dd->ipath_physshadow;
1960 int i, cnt = 0;
1961
1962 ipath_cdbg(VERBOSE, "Unlocking any expTID pages still "
1963 "locked\n");
1964 for (port = 0; port < dd->ipath_cfgports; port++) {
1965 int port_tidbase = port * dd->ipath_rcvtidcnt;
1966 int maxtid = port_tidbase + dd->ipath_rcvtidcnt;
1967 for (i = port_tidbase; i < maxtid; i++) {
1968 if (!tmpp[i])
1969 continue;
1970 pci_unmap_page(dd->pcidev, tmpd[i],
1971 PAGE_SIZE, PCI_DMA_FROMDEVICE);
1972 ipath_release_user_pages(&tmpp[i], 1);
1973 tmpp[i] = NULL;
1974 cnt++;
1975 }
1976 }
1977 if (cnt) {
1978 ipath_stats.sps_pageunlocks += cnt;
1979 ipath_cdbg(VERBOSE, "There were still %u expTID "
1980 "entries locked\n", cnt);
1981 }
1982 if (ipath_stats.sps_pagelocks ||
1983 ipath_stats.sps_pageunlocks)
1984 ipath_cdbg(VERBOSE, "%llu pages locked, %llu "
1985 "unlocked via ipath_m{un}lock\n",
1986 (unsigned long long)
1987 ipath_stats.sps_pagelocks,
1988 (unsigned long long)
1989 ipath_stats.sps_pageunlocks);
1990
1991 ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n",
1992 dd->ipath_pageshadow);
1993 vfree(dd->ipath_pageshadow);
1994 dd->ipath_pageshadow = NULL;
1995 }
1996
1997 /*
1998 * free any resources still in use (usually just kernel ports)
1999 * at unload; we do for portcnt, not cfgports, because cfgports
2000 * could have changed while we were loaded.
2001 */
2002 for (port = 0; port < dd->ipath_portcnt; port++) {
2003 struct ipath_portdata *pd = dd->ipath_pd[port];
2004 dd->ipath_pd[port] = NULL;
2005 ipath_free_pddata(dd, pd);
2006 }
2007 kfree(dd->ipath_pd);
2008 /*
2009 * debuggability, in case some cleanup path tries to use it
2010 * after this
2011 */
2012 dd->ipath_pd = NULL;
2013}
2014
2015static void __exit infinipath_cleanup(void) 2033static void __exit infinipath_cleanup(void)
2016{ 2034{
2017 struct ipath_devdata *dd, *tmp;
2018 unsigned long flags;
2019
2020 ipath_diagpkt_remove();
2021
2022 ipath_exit_ipathfs(); 2035 ipath_exit_ipathfs();
2023 2036
2024 ipath_driver_remove_group(&ipath_driver.driver); 2037 ipath_driver_remove_group(&ipath_driver.driver);
2025 2038
2026 spin_lock_irqsave(&ipath_devs_lock, flags);
2027
2028 /*
2029 * turn off rcv, send, and interrupts for all ports, all drivers
2030 * should also hard reset the chip here?
2031 * free up port 0 (kernel) rcvhdr, egr bufs, and eventually tid bufs
2032 * for all versions of the driver, if they were allocated
2033 */
2034 list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) {
2035 spin_unlock_irqrestore(&ipath_devs_lock, flags);
2036
2037 if (dd->verbs_dev) {
2038 ipath_unregister_ib_device(dd->verbs_dev);
2039 dd->verbs_dev = NULL;
2040 }
2041
2042 if (dd->ipath_kregbase)
2043 cleanup_device(dd);
2044
2045 if (dd->pcidev) {
2046 if (dd->pcidev->irq) {
2047 ipath_cdbg(VERBOSE,
2048 "unit %u free_irq of irq %x\n",
2049 dd->ipath_unit, dd->pcidev->irq);
2050 free_irq(dd->pcidev->irq, dd);
2051 } else
2052 ipath_dbg("irq is 0, not doing free_irq "
2053 "for unit %u\n", dd->ipath_unit);
2054
2055 /*
2056 * we check for NULL here, because it's outside
2057 * the kregbase check, and we need to call it
2058 * after the free_irq. Thus it's possible that
2059 * the function pointers were never initialized.
2060 */
2061 if (dd->ipath_f_cleanup)
2062 /* clean up chip-specific stuff */
2063 dd->ipath_f_cleanup(dd);
2064
2065 dd->pcidev = NULL;
2066 }
2067 spin_lock_irqsave(&ipath_devs_lock, flags);
2068 }
2069
2070 spin_unlock_irqrestore(&ipath_devs_lock, flags);
2071
2072 ipath_cdbg(VERBOSE, "Unregistering pci driver\n"); 2039 ipath_cdbg(VERBOSE, "Unregistering pci driver\n");
2073 pci_unregister_driver(&ipath_driver); 2040 pci_unregister_driver(&ipath_driver);
2074 2041
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-17 13:31:35 -0500