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IB/ipath: Clean up module exit code
Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Bryan O'Sullivan
Roland Dreier
parent
957670a57e
commit
7227aac47d
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@ -517,33 +517,146 @@ bail:
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return ret;
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}
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static void __devexit cleanup_device(struct ipath_devdata *dd)
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{
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int port;
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ipath_shutdown_device(dd);
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if (*dd->ipath_statusp & IPATH_STATUS_CHIP_PRESENT) {
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/* can't do anything more with chip; needs re-init */
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*dd->ipath_statusp &= ~IPATH_STATUS_CHIP_PRESENT;
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if (dd->ipath_kregbase) {
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/*
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* if we haven't already cleaned up before these are
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* to ensure any register reads/writes "fail" until
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* re-init
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*/
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dd->ipath_kregbase = NULL;
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dd->ipath_uregbase = 0;
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dd->ipath_sregbase = 0;
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dd->ipath_cregbase = 0;
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dd->ipath_kregsize = 0;
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}
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ipath_disable_wc(dd);
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}
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if (dd->ipath_pioavailregs_dma) {
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dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE,
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(void *) dd->ipath_pioavailregs_dma,
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dd->ipath_pioavailregs_phys);
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dd->ipath_pioavailregs_dma = NULL;
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}
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if (dd->ipath_dummy_hdrq) {
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dma_free_coherent(&dd->pcidev->dev,
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dd->ipath_pd[0]->port_rcvhdrq_size,
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dd->ipath_dummy_hdrq, dd->ipath_dummy_hdrq_phys);
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dd->ipath_dummy_hdrq = NULL;
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}
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if (dd->ipath_pageshadow) {
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struct page **tmpp = dd->ipath_pageshadow;
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dma_addr_t *tmpd = dd->ipath_physshadow;
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int i, cnt = 0;
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ipath_cdbg(VERBOSE, "Unlocking any expTID pages still "
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"locked\n");
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for (port = 0; port < dd->ipath_cfgports; port++) {
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int port_tidbase = port * dd->ipath_rcvtidcnt;
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int maxtid = port_tidbase + dd->ipath_rcvtidcnt;
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for (i = port_tidbase; i < maxtid; i++) {
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if (!tmpp[i])
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continue;
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pci_unmap_page(dd->pcidev, tmpd[i],
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PAGE_SIZE, PCI_DMA_FROMDEVICE);
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ipath_release_user_pages(&tmpp[i], 1);
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tmpp[i] = NULL;
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cnt++;
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}
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}
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if (cnt) {
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ipath_stats.sps_pageunlocks += cnt;
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ipath_cdbg(VERBOSE, "There were still %u expTID "
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"entries locked\n", cnt);
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}
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if (ipath_stats.sps_pagelocks ||
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ipath_stats.sps_pageunlocks)
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ipath_cdbg(VERBOSE, "%llu pages locked, %llu "
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"unlocked via ipath_m{un}lock\n",
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(unsigned long long)
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ipath_stats.sps_pagelocks,
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(unsigned long long)
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ipath_stats.sps_pageunlocks);
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ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n",
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dd->ipath_pageshadow);
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vfree(dd->ipath_pageshadow);
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dd->ipath_pageshadow = NULL;
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}
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/*
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* free any resources still in use (usually just kernel ports)
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* at unload; we do for portcnt, not cfgports, because cfgports
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* could have changed while we were loaded.
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*/
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for (port = 0; port < dd->ipath_portcnt; port++) {
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struct ipath_portdata *pd = dd->ipath_pd[port];
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dd->ipath_pd[port] = NULL;
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ipath_free_pddata(dd, pd);
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}
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kfree(dd->ipath_pd);
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/*
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* debuggability, in case some cleanup path tries to use it
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* after this
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*/
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dd->ipath_pd = NULL;
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}
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static void __devexit ipath_remove_one(struct pci_dev *pdev)
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{
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struct ipath_devdata *dd;
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struct ipath_devdata *dd = pci_get_drvdata(pdev);
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ipath_cdbg(VERBOSE, "removing, pdev=%p\n", pdev);
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if (!pdev)
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return;
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ipath_cdbg(VERBOSE, "removing, pdev=%p, dd=%p\n", pdev, dd);
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dd = pci_get_drvdata(pdev);
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if (dd->verbs_dev) {
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if (dd->verbs_dev)
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ipath_unregister_ib_device(dd->verbs_dev);
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dd->verbs_dev = NULL;
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}
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ipath_diag_remove(dd);
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ipath_user_remove(dd);
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ipathfs_remove_device(dd);
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ipath_device_remove_group(&pdev->dev, dd);
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ipath_cdbg(VERBOSE, "Releasing pci memory regions, dd %p, "
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"unit %u\n", dd, (u32) dd->ipath_unit);
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if (dd->ipath_kregbase) {
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ipath_cdbg(VERBOSE, "Unmapping kregbase %p\n",
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dd->ipath_kregbase);
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iounmap((volatile void __iomem *) dd->ipath_kregbase);
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dd->ipath_kregbase = NULL;
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}
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cleanup_device(dd);
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/*
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* turn off rcv, send, and interrupts for all ports, all drivers
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* should also hard reset the chip here?
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* free up port 0 (kernel) rcvhdr, egr bufs, and eventually tid bufs
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* for all versions of the driver, if they were allocated
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*/
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if (pdev->irq) {
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ipath_cdbg(VERBOSE,
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"unit %u free_irq of irq %x\n",
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dd->ipath_unit, pdev->irq);
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free_irq(pdev->irq, dd);
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} else
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ipath_dbg("irq is 0, not doing free_irq "
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"for unit %u\n", dd->ipath_unit);
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/*
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* we check for NULL here, because it's outside
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* the kregbase check, and we need to call it
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* after the free_irq. Thus it's possible that
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* the function pointers were never initialized.
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*/
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if (dd->ipath_f_cleanup)
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/* clean up chip-specific stuff */
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dd->ipath_f_cleanup(dd);
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ipath_cdbg(VERBOSE, "Unmapping kregbase %p\n", dd->ipath_kregbase);
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iounmap((volatile void __iomem *) dd->ipath_kregbase);
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pci_release_regions(pdev);
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ipath_cdbg(VERBOSE, "calling pci_disable_device\n");
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pci_disable_device(pdev);
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@ -1917,158 +2030,12 @@ bail:
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return ret;
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}
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static void cleanup_device(struct ipath_devdata *dd)
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{
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int port;
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ipath_shutdown_device(dd);
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if (*dd->ipath_statusp & IPATH_STATUS_CHIP_PRESENT) {
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/* can't do anything more with chip; needs re-init */
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*dd->ipath_statusp &= ~IPATH_STATUS_CHIP_PRESENT;
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if (dd->ipath_kregbase) {
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/*
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* if we haven't already cleaned up before these are
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* to ensure any register reads/writes "fail" until
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* re-init
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*/
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dd->ipath_kregbase = NULL;
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dd->ipath_uregbase = 0;
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dd->ipath_sregbase = 0;
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dd->ipath_cregbase = 0;
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dd->ipath_kregsize = 0;
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}
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ipath_disable_wc(dd);
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}
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if (dd->ipath_pioavailregs_dma) {
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dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE,
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(void *) dd->ipath_pioavailregs_dma,
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dd->ipath_pioavailregs_phys);
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dd->ipath_pioavailregs_dma = NULL;
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}
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if (dd->ipath_dummy_hdrq) {
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dma_free_coherent(&dd->pcidev->dev,
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dd->ipath_pd[0]->port_rcvhdrq_size,
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dd->ipath_dummy_hdrq, dd->ipath_dummy_hdrq_phys);
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dd->ipath_dummy_hdrq = NULL;
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}
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if (dd->ipath_pageshadow) {
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struct page **tmpp = dd->ipath_pageshadow;
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dma_addr_t *tmpd = dd->ipath_physshadow;
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int i, cnt = 0;
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ipath_cdbg(VERBOSE, "Unlocking any expTID pages still "
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"locked\n");
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for (port = 0; port < dd->ipath_cfgports; port++) {
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int port_tidbase = port * dd->ipath_rcvtidcnt;
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int maxtid = port_tidbase + dd->ipath_rcvtidcnt;
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for (i = port_tidbase; i < maxtid; i++) {
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if (!tmpp[i])
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continue;
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pci_unmap_page(dd->pcidev, tmpd[i],
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PAGE_SIZE, PCI_DMA_FROMDEVICE);
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ipath_release_user_pages(&tmpp[i], 1);
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tmpp[i] = NULL;
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cnt++;
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}
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}
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if (cnt) {
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ipath_stats.sps_pageunlocks += cnt;
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ipath_cdbg(VERBOSE, "There were still %u expTID "
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"entries locked\n", cnt);
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}
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if (ipath_stats.sps_pagelocks ||
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ipath_stats.sps_pageunlocks)
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ipath_cdbg(VERBOSE, "%llu pages locked, %llu "
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"unlocked via ipath_m{un}lock\n",
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(unsigned long long)
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ipath_stats.sps_pagelocks,
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(unsigned long long)
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ipath_stats.sps_pageunlocks);
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ipath_cdbg(VERBOSE, "Free shadow page tid array at %p\n",
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dd->ipath_pageshadow);
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vfree(dd->ipath_pageshadow);
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dd->ipath_pageshadow = NULL;
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}
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/*
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* free any resources still in use (usually just kernel ports)
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* at unload; we do for portcnt, not cfgports, because cfgports
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* could have changed while we were loaded.
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*/
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for (port = 0; port < dd->ipath_portcnt; port++) {
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struct ipath_portdata *pd = dd->ipath_pd[port];
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dd->ipath_pd[port] = NULL;
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ipath_free_pddata(dd, pd);
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}
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kfree(dd->ipath_pd);
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/*
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* debuggability, in case some cleanup path tries to use it
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* after this
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*/
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dd->ipath_pd = NULL;
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}
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static void __exit infinipath_cleanup(void)
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{
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struct ipath_devdata *dd, *tmp;
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unsigned long flags;
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ipath_diagpkt_remove();
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ipath_exit_ipathfs();
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ipath_driver_remove_group(&ipath_driver.driver);
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spin_lock_irqsave(&ipath_devs_lock, flags);
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/*
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* turn off rcv, send, and interrupts for all ports, all drivers
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* should also hard reset the chip here?
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* free up port 0 (kernel) rcvhdr, egr bufs, and eventually tid bufs
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* for all versions of the driver, if they were allocated
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*/
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list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) {
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spin_unlock_irqrestore(&ipath_devs_lock, flags);
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if (dd->verbs_dev) {
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ipath_unregister_ib_device(dd->verbs_dev);
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dd->verbs_dev = NULL;
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}
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if (dd->ipath_kregbase)
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cleanup_device(dd);
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if (dd->pcidev) {
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if (dd->pcidev->irq) {
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ipath_cdbg(VERBOSE,
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"unit %u free_irq of irq %x\n",
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dd->ipath_unit, dd->pcidev->irq);
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free_irq(dd->pcidev->irq, dd);
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} else
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ipath_dbg("irq is 0, not doing free_irq "
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"for unit %u\n", dd->ipath_unit);
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/*
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* we check for NULL here, because it's outside
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* the kregbase check, and we need to call it
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* after the free_irq. Thus it's possible that
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* the function pointers were never initialized.
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*/
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if (dd->ipath_f_cleanup)
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/* clean up chip-specific stuff */
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dd->ipath_f_cleanup(dd);
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dd->pcidev = NULL;
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}
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spin_lock_irqsave(&ipath_devs_lock, flags);
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}
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spin_unlock_irqrestore(&ipath_devs_lock, flags);
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ipath_cdbg(VERBOSE, "Unregistering pci driver\n");
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pci_unregister_driver(&ipath_driver);
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