diff options
| -rw-r--r-- | drivers/infiniband/hw/qib/qib.h | 1 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_diag.c | 19 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_iba7322.c | 18 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_init.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_pcie.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_tx.c | 6 |
6 files changed, 46 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h index 32d9208efcf..3593983df7b 100644 --- a/drivers/infiniband/hw/qib/qib.h +++ b/drivers/infiniband/hw/qib/qib.h @@ -686,6 +686,7 @@ struct qib_devdata { void __iomem *piobase; /* mem-mapped pointer to base of user chip regs (if using WC PAT) */ u64 __iomem *userbase; + void __iomem *piovl15base; /* base of VL15 buffers, if not WC */ /* * points to area where PIOavail registers will be DMA'ed. * Has to be on a page of it's own, because the page will be diff --git a/drivers/infiniband/hw/qib/qib_diag.c b/drivers/infiniband/hw/qib/qib_diag.c index ca98dd52375..05dcf0d9a7d 100644 --- a/drivers/infiniband/hw/qib/qib_diag.c +++ b/drivers/infiniband/hw/qib/qib_diag.c @@ -233,6 +233,7 @@ static u32 __iomem *qib_remap_ioaddr32(struct qib_devdata *dd, u32 offset, u32 __iomem *krb32 = (u32 __iomem *)dd->kregbase; u32 __iomem *map = NULL; u32 cnt = 0; + u32 tot4k, offs4k; /* First, simplest case, offset is within the first map. */ kreglen = (dd->kregend - dd->kregbase) * sizeof(u64); @@ -250,7 +251,8 @@ static u32 __iomem *qib_remap_ioaddr32(struct qib_devdata *dd, u32 offset, if (dd->userbase) { /* If user regs mapped, they are after send, so set limit. */ u32 ulim = (dd->cfgctxts * dd->ureg_align) + dd->uregbase; - snd_lim = dd->uregbase; + if (!dd->piovl15base) + snd_lim = dd->uregbase; krb32 = (u32 __iomem *)dd->userbase; if (offset >= dd->uregbase && offset < ulim) { map = krb32 + (offset - dd->uregbase) / sizeof(u32); @@ -277,14 +279,14 @@ static u32 __iomem *qib_remap_ioaddr32(struct qib_devdata *dd, u32 offset, /* If 4k buffers exist, account for them by bumping * appropriate limit. */ + tot4k = dd->piobcnt4k * dd->align4k; + offs4k = dd->piobufbase >> 32; if (dd->piobcnt4k) { - u32 tot4k = dd->piobcnt4k * dd->align4k; - u32 offs4k = dd->piobufbase >> 32; if (snd_bottom > offs4k) snd_bottom = offs4k; else { /* 4k above 2k. Bump snd_lim, if needed*/ - if (!dd->userbase) + if (!dd->userbase || dd->piovl15base) snd_lim = offs4k + tot4k; } } @@ -298,6 +300,15 @@ static u32 __iomem *qib_remap_ioaddr32(struct qib_devdata *dd, u32 offset, cnt = snd_lim - offset; } + if (!map && offs4k && dd->piovl15base) { + snd_lim = offs4k + tot4k + 2 * dd->align4k; + if (offset >= (offs4k + tot4k) && offset < snd_lim) { + map = (u32 __iomem *)dd->piovl15base + + ((offset - (offs4k + tot4k)) / sizeof(u32)); + cnt = snd_lim - offset; + } + } + mapped: if (cntp) *cntp = cnt; diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c index 503992d9c5c..3e9828be501 100644 --- a/drivers/infiniband/hw/qib/qib_iba7322.c +++ b/drivers/infiniband/hw/qib/qib_iba7322.c @@ -6119,9 +6119,25 @@ static int qib_init_7322_variables(struct qib_devdata *dd) qib_set_ctxtcnt(dd); if (qib_wc_pat) { - ret = init_chip_wc_pat(dd, NUM_VL15_BUFS * dd->align4k); + resource_size_t vl15off; + /* + * We do not set WC on the VL15 buffers to avoid + * a rare problem with unaligned writes from + * interrupt-flushed store buffers, so we need + * to map those separately here. We can't solve + * this for the rarely used mtrr case. + */ + ret = init_chip_wc_pat(dd, 0); if (ret) goto bail; + + /* vl15 buffers start just after the 4k buffers */ + vl15off = dd->physaddr + (dd->piobufbase >> 32) + + dd->piobcnt4k * dd->align4k; + dd->piovl15base = ioremap_nocache(vl15off, + NUM_VL15_BUFS * dd->align4k); + if (!dd->piovl15base) + goto bail; } qib_7322_set_baseaddrs(dd); /* set chip access pointers now */ diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c index 9b40f345ac3..25895991dc5 100644 --- a/drivers/infiniband/hw/qib/qib_init.c +++ b/drivers/infiniband/hw/qib/qib_init.c @@ -1499,6 +1499,12 @@ bail: return -ENOMEM; } +/* + * Note: Changes to this routine should be mirrored + * for the diagnostics routine qib_remap_ioaddr32(). + * There is also related code for VL15 buffers in qib_init_7322_variables(). + * The teardown code that unmaps is in qib_pcie_ddcleanup() + */ int init_chip_wc_pat(struct qib_devdata *dd, u32 vl15buflen) { u64 __iomem *qib_kregbase = NULL; diff --git a/drivers/infiniband/hw/qib/qib_pcie.c b/drivers/infiniband/hw/qib/qib_pcie.c index c926bf4541d..7fa6e559263 100644 --- a/drivers/infiniband/hw/qib/qib_pcie.c +++ b/drivers/infiniband/hw/qib/qib_pcie.c @@ -179,6 +179,8 @@ void qib_pcie_ddcleanup(struct qib_devdata *dd) iounmap(dd->piobase); if (dd->userbase) iounmap(dd->userbase); + if (dd->piovl15base) + iounmap(dd->piovl15base); pci_disable_device(dd->pcidev); pci_release_regions(dd->pcidev); diff --git a/drivers/infiniband/hw/qib/qib_tx.c b/drivers/infiniband/hw/qib/qib_tx.c index f7eb1ddff5f..af30232b683 100644 --- a/drivers/infiniband/hw/qib/qib_tx.c +++ b/drivers/infiniband/hw/qib/qib_tx.c @@ -340,9 +340,13 @@ rescan: if (i < dd->piobcnt2k) buf = (u32 __iomem *)(dd->pio2kbase + i * dd->palign); - else + else if (i < dd->piobcnt2k + dd->piobcnt4k || !dd->piovl15base) buf = (u32 __iomem *)(dd->pio4kbase + (i - dd->piobcnt2k) * dd->align4k); + else + buf = (u32 __iomem *)(dd->piovl15base + + (i - (dd->piobcnt2k + dd->piobcnt4k)) * + dd->align4k); if (pbufnum) *pbufnum = i; dd->upd_pio_shadow = 0; |