diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_driver.c | 158 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_file_ops.c | 91 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_iba7220.c | 26 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_init_chip.c | 95 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_intr.c | 80 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_kernel.h | 23 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_mad.c | 4 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_qp.c | 237 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_rc.c | 291 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_ruc.c | 332 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_sdma.c | 60 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_uc.c | 61 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_ud.c | 66 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_user_sdma.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.c | 181 | ||||
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_verbs.h | 64 |
16 files changed, 999 insertions, 772 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index acf30c06a0c..daad09a4591 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -1197,7 +1197,7 @@ void ipath_kreceive(struct ipath_portdata *pd) } reloop: - for (last = 0, i = 1; !last; i++) { + for (last = 0, i = 1; !last; i += !last) { hdr = dd->ipath_f_get_msgheader(dd, rhf_addr); eflags = ipath_hdrget_err_flags(rhf_addr); etype = ipath_hdrget_rcv_type(rhf_addr); @@ -1428,6 +1428,40 @@ static void ipath_update_pio_bufs(struct ipath_devdata *dd) spin_unlock_irqrestore(&ipath_pioavail_lock, flags); } +/* + * used to force update of pioavailshadow if we can't get a pio buffer. + * Needed primarily due to exitting freeze mode after recovering + * from errors. Done lazily, because it's safer (known to not + * be writing pio buffers). + */ +static void ipath_reset_availshadow(struct ipath_devdata *dd) +{ + int i, im; + unsigned long flags; + + spin_lock_irqsave(&ipath_pioavail_lock, flags); + for (i = 0; i < dd->ipath_pioavregs; i++) { + u64 val, oldval; + /* deal with 6110 chip bug on high register #s */ + im = (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) ? + i ^ 1 : i; + val = le64_to_cpu(dd->ipath_pioavailregs_dma[im]); + /* + * busy out the buffers not in the kernel avail list, + * without changing the generation bits. + */ + oldval = dd->ipath_pioavailshadow[i]; + dd->ipath_pioavailshadow[i] = val | + ((~dd->ipath_pioavailkernel[i] << + INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT) & + 0xaaaaaaaaaaaaaaaaULL); /* All BUSY bits in qword */ + if (oldval != dd->ipath_pioavailshadow[i]) + ipath_dbg("shadow[%d] was %Lx, now %lx\n", + i, oldval, dd->ipath_pioavailshadow[i]); + } + spin_unlock_irqrestore(&ipath_pioavail_lock, flags); +} + /** * ipath_setrcvhdrsize - set the receive header size * @dd: the infinipath device @@ -1482,9 +1516,12 @@ static noinline void no_pio_bufs(struct ipath_devdata *dd) */ ipath_stats.sps_nopiobufs++; if (!(++dd->ipath_consec_nopiobuf % 100000)) { - ipath_dbg("%u pio sends with no bufavail; dmacopy: " - "%llx %llx %llx %llx; shadow: %lx %lx %lx %lx\n", + ipath_force_pio_avail_update(dd); /* at start */ + ipath_dbg("%u tries no piobufavail ts%lx; dmacopy: " + "%llx %llx %llx %llx\n" + "ipath shadow: %lx %lx %lx %lx\n", dd->ipath_consec_nopiobuf, + (unsigned long)get_cycles(), (unsigned long long) le64_to_cpu(dma[0]), (unsigned long long) le64_to_cpu(dma[1]), (unsigned long long) le64_to_cpu(dma[2]), @@ -1496,14 +1533,17 @@ static noinline void no_pio_bufs(struct ipath_devdata *dd) */ if ((dd->ipath_piobcnt2k + dd->ipath_piobcnt4k) > (sizeof(shadow[0]) * 4 * 4)) - ipath_dbg("2nd group: dmacopy: %llx %llx " - "%llx %llx; shadow: %lx %lx %lx %lx\n", + ipath_dbg("2nd group: dmacopy: " + "%llx %llx %llx %llx\n" + "ipath shadow: %lx %lx %lx %lx\n", (unsigned long long)le64_to_cpu(dma[4]), (unsigned long long)le64_to_cpu(dma[5]), (unsigned long long)le64_to_cpu(dma[6]), (unsigned long long)le64_to_cpu(dma[7]), - shadow[4], shadow[5], shadow[6], - shadow[7]); + shadow[4], shadow[5], shadow[6], shadow[7]); + + /* at end, so update likely happened */ + ipath_reset_availshadow(dd); } } @@ -1652,19 +1692,46 @@ void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start, unsigned len, int avail) { unsigned long flags; - unsigned end; + unsigned end, cnt = 0, next; /* There are two bits per send buffer (busy and generation) */ start *= 2; - len *= 2; - end = start + len; + end = start + len * 2; - /* Set or clear the generation bits. */ spin_lock_irqsave(&ipath_pioavail_lock, flags); + /* Set or clear the busy bit in the shadow. */ while (start < end) { if (avail) { - __clear_bit(start + INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT, - dd->ipath_pioavailshadow); + unsigned long dma; + int i, im; + /* + * the BUSY bit will never be set, because we disarm + * the user buffers before we hand them back to the + * kernel. We do have to make sure the generation + * bit is set correctly in shadow, since it could + * have changed many times while allocated to user. + * We can't use the bitmap functions on the full + * dma array because it is always little-endian, so + * we have to flip to host-order first. + * BITS_PER_LONG is slightly wrong, since it's + * always 64 bits per register in chip... + * We only work on 64 bit kernels, so that's OK. + */ + /* deal with 6110 chip bug on high register #s */ + i = start / BITS_PER_LONG; + im = (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) ? + i ^ 1 : i; + __clear_bit(INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT + + start, dd->ipath_pioavailshadow); + dma = (unsigned long) le64_to_cpu( + dd->ipath_pioavailregs_dma[im]); + if (test_bit((INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT + + start) % BITS_PER_LONG, &dma)) + __set_bit(INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT + + start, dd->ipath_pioavailshadow); + else + __clear_bit(INFINIPATH_SENDPIOAVAIL_CHECK_SHIFT + + start, dd->ipath_pioavailshadow); __set_bit(start, dd->ipath_pioavailkernel); } else { __set_bit(start + INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT, @@ -1673,7 +1740,44 @@ void ipath_chg_pioavailkernel(struct ipath_devdata *dd, unsigned start, } start += 2; } + + if (dd->ipath_pioupd_thresh) { + end = 2 * (dd->ipath_piobcnt2k + dd->ipath_piobcnt4k); + next = find_first_bit(dd->ipath_pioavailkernel, end); + while (next < end) { + cnt++; + next = find_next_bit(dd->ipath_pioavailkernel, end, + next + 1); + } + } spin_unlock_irqrestore(&ipath_pioavail_lock, flags); + + /* + * When moving buffers from kernel to user, if number assigned to + * the user is less than the pio update threshold, and threshold + * is supported (cnt was computed > 0), drop the update threshold + * so we update at least once per allocated number of buffers. + * In any case, if the kernel buffers are less than the threshold, + * drop the threshold. We don't bother increasing it, having once + * decreased it, since it would typically just cycle back and forth. + * If we don't decrease below buffers in use, we can wait a long + * time for an update, until some other context uses PIO buffers. + */ + if (!avail && len < cnt) + cnt = len; + if (cnt < dd->ipath_pioupd_thresh) { + dd->ipath_pioupd_thresh = cnt; + ipath_dbg("Decreased pio update threshold to %u\n", + dd->ipath_pioupd_thresh); + spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); + dd->ipath_sendctrl &= ~(INFINIPATH_S_UPDTHRESH_MASK + << INFINIPATH_S_UPDTHRESH_SHIFT); + dd->ipath_sendctrl |= dd->ipath_pioupd_thresh + << INFINIPATH_S_UPDTHRESH_SHIFT; + ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, + dd->ipath_sendctrl); + spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); + } } /** @@ -1790,12 +1894,12 @@ void ipath_cancel_sends(struct ipath_devdata *dd, int restore_sendctrl) */ if (dd->ipath_flags & IPATH_HAS_SEND_DMA) { int skip_cancel; - u64 *statp = &dd->ipath_sdma_status; + unsigned long *statp = &dd->ipath_sdma_status; spin_lock_irqsave(&dd->ipath_sdma_lock, flags); skip_cancel = - !test_bit(IPATH_SDMA_DISABLED, statp) && - test_and_set_bit(IPATH_SDMA_ABORTING, statp); + test_and_set_bit(IPATH_SDMA_ABORTING, statp) + && !test_bit(IPATH_SDMA_DISABLED, statp); spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); if (skip_cancel) goto bail; @@ -1826,6 +1930,9 @@ void ipath_cancel_sends(struct ipath_devdata *dd, int restore_sendctrl) ipath_disarm_piobufs(dd, 0, dd->ipath_piobcnt2k + dd->ipath_piobcnt4k); + if (dd->ipath_flags & IPATH_HAS_SEND_DMA) + set_bit(IPATH_SDMA_DISARMED, &dd->ipath_sdma_status); + if (restore_sendctrl) { /* else done by caller later if needed */ spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); @@ -1845,7 +1952,6 @@ void ipath_cancel_sends(struct ipath_devdata *dd, int restore_sendctrl) /* only wait so long for intr */ dd->ipath_sdma_abort_intr_timeout = jiffies + HZ; dd->ipath_sdma_reset_wait = 200; - __set_bit(IPATH_SDMA_DISARMED, &dd->ipath_sdma_status); if (!test_bit(IPATH_SDMA_SHUTDOWN, &dd->ipath_sdma_status)) tasklet_hi_schedule(&dd->ipath_sdma_abort_task); spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); @@ -2510,7 +2616,7 @@ int ipath_reset_device(int unit) ipath_dbg("unit %u port %d is in use " "(PID %u cmd %s), can't reset\n", unit, i, - dd->ipath_pd[i]->port_pid, + pid_nr(dd->ipath_pd[i]->port_pid), dd->ipath_pd[i]->port_comm); ret = -EBUSY; goto bail; @@ -2548,19 +2654,21 @@ bail: static int ipath_signal_procs(struct ipath_devdata *dd, int sig) { int i, sub, any = 0; - pid_t pid; + struct pid *pid; if (!dd->ipath_pd) return 0; for (i = 1; i < dd->ipath_cfgports; i++) { - if (!dd->ipath_pd[i] || !dd->ipath_pd[i]->port_cnt || - !dd->ipath_pd[i]->port_pid) + if (!dd->ipath_pd[i] || !dd->ipath_pd[i]->port_cnt) continue; pid = dd->ipath_pd[i]->port_pid; + if (!pid) + continue; + dev_info(&dd->pcidev->dev, "context %d in use " "(PID %u), sending signal %d\n", - i, pid, sig); - kill_proc(pid, sig, 1); + i, pid_nr(pid), sig); + kill_pid(pid, sig, 1); any++; for (sub = 0; sub < INFINIPATH_MAX_SUBPORT; sub++) { pid = dd->ipath_pd[i]->port_subpid[sub]; @@ -2568,8 +2676,8 @@ static int ipath_signal_procs(struct ipath_devdata *dd, int sig) continue; dev_info(&dd->pcidev->dev, "sub-context " "%d:%d in use (PID %u), sending " - "signal %d\n", i, sub, pid, sig); - kill_proc(pid, sig, 1); + "signal %d\n", i, sub, pid_nr(pid), sig); + kill_pid(pid, sig, 1); any++; } } diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c index 8b1752202e7..b472b15637f 100644 --- a/drivers/infiniband/hw/ipath/ipath_file_ops.c +++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c @@ -173,47 +173,25 @@ static int ipath_get_base_info(struct file *fp, (void *) dd->ipath_statusp - (void *) dd->ipath_pioavailregs_dma; if (!shared) { - kinfo->spi_piocnt = dd->ipath_pbufsport; + kinfo->spi_piocnt = pd->port_piocnt; kinfo->spi_piobufbase = (u64) pd->port_piobufs; kinfo->__spi_uregbase = (u64) dd->ipath_uregbase + dd->ipath_ureg_align * pd->port_port; } else if (master) { - kinfo->spi_piocnt = (dd->ipath_pbufsport / subport_cnt) + - (dd->ipath_pbufsport % subport_cnt); + kinfo->spi_piocnt = (pd->port_piocnt / subport_cnt) + + (pd->port_piocnt % subport_cnt); /* Master's PIO buffers are after all the slave's */ kinfo->spi_piobufbase = (u64) pd->port_piobufs + dd->ipath_palign * - (dd->ipath_pbufsport - kinfo->spi_piocnt); + (pd->port_piocnt - kinfo->spi_piocnt); } else { unsigned slave = subport_fp(fp) - 1; - kinfo->spi_piocnt = dd->ipath_pbufsport / subport_cnt; + kinfo->spi_piocnt = pd->port_piocnt / subport_cnt; kinfo->spi_piobufbase = (u64) pd->port_piobufs + dd->ipath_palign * kinfo->spi_piocnt * slave; } - /* - * Set the PIO avail update threshold to no larger - * than the number of buffers per process. Note that - * we decrease it here, but won't ever increase it. - */ - if (dd->ipath_pioupd_thresh && - kinfo->spi_piocnt < dd->ipath_pioupd_thresh) { - unsigned long flags; - - dd->ipath_pioupd_thresh = kinfo->spi_piocnt; - ipath_dbg("Decreased pio update threshold to %u\n", - dd->ipath_pioupd_thresh); - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl &= ~(INFINIPATH_S_UPDTHRESH_MASK - << INFINIPATH_S_UPDTHRESH_SHIFT); - dd->ipath_sendctrl |= dd->ipath_pioupd_thresh - << INFINIPATH_S_UPDTHRESH_SHIFT; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - } - if (shared) { kinfo->spi_port_uregbase = (u64) dd->ipath_uregbase + dd->ipath_ureg_align * pd->port_port; @@ -577,7 +555,7 @@ static int ipath_tid_free(struct ipath_portdata *pd, unsigned subport, p = dd->ipath_pageshadow[porttid + tid]; dd->ipath_pageshadow[porttid + tid] = NULL; ipath_cdbg(VERBOSE, "PID %u freeing TID %u\n", - pd->port_pid, tid); + pid_nr(pd->port_pid), tid); dd->ipath_f_put_tid(dd, &tidbase[tid], RCVHQ_RCV_TYPE_EXPECTED, dd->ipath_tidinvalid); @@ -1309,19 +1287,19 @@ static int ipath_mmap(struct file *fp, struct vm_area_struct *vma) ureg = dd->ipath_uregbase + dd->ipath_ureg_align * pd->port_port; if (!pd->port_subport_cnt) { /* port is not shared */ - piocnt = dd->ipath_pbufsport; + piocnt = pd->port_piocnt; piobufs = pd->port_piobufs; } else if (!subport_fp(fp)) { /* caller is the master */ - piocnt = (dd->ipath_pbufsport / pd->port_subport_cnt) + - (dd->ipath_pbufsport % pd->port_subport_cnt); + piocnt = (pd->port_piocnt / pd->port_subport_cnt) + + (pd->port_piocnt % pd->port_subport_cnt); piobufs = pd->port_piobufs + - dd->ipath_palign * (dd->ipath_pbufsport - piocnt); + dd->ipath_palign * (pd->port_piocnt - piocnt); } else { unsigned slave = subport_fp(fp) - 1; /* caller is a slave */ - piocnt = dd->ipath_pbufsport / pd->port_subport_cnt; + piocnt = pd->port_piocnt / pd->port_subport_cnt; piobufs = pd->port_piobufs + dd->ipath_palign * piocnt * slave; } @@ -1631,11 +1609,8 @@ static int try_alloc_port(struct ipath_devdata *dd, int port, port); pd->port_cnt = 1; port_fp(fp) = pd; - pd->port_pid = current->pid; + pd->port_pid = get_pid(task_pid(current)); strncpy(pd->port_comm, current->comm, sizeof(pd->port_comm)); - ipath_chg_pioavailkernel(dd, - dd->ipath_pbufsport * (pd->port_port - 1), - dd->ipath_pbufsport, 0); ipath_stats.sps_ports++; ret = 0; } else @@ -1818,14 +1793,15 @@ static int find_shared_port(struct file *fp, } port_fp(fp) = pd; subport_fp(fp) = pd->port_cnt++; - pd->port_subpid[subport_fp(fp)] = current->pid; + pd->port_subpid[subport_fp(fp)] = + get_pid(task_pid(current)); tidcursor_fp(fp) = 0; pd->active_slaves |= 1 << subport_fp(fp); ipath_cdbg(PROC, "%s[%u] %u sharing %s[%u] unit:port %u:%u\n", current->comm, current->pid, subport_fp(fp), - pd->port_comm, pd->port_pid, + pd->port_comm, pid_nr(pd->port_pid), dd->ipath_unit, pd->port_port); ret = 1; goto done; @@ -1938,11 +1914,25 @@ static int ipath_do_user_init(struct file *fp, /* for now we do nothing with rcvhdrcnt: uinfo->spu_rcvhdrcnt */ + /* some ports may get extra buffers, calculate that here */ + if (pd->port_port <= dd->ipath_ports_extrabuf) + pd->port_piocnt = dd->ipath_pbufsport + 1; + else + pd->port_piocnt = dd->ipath_pbufsport; + /* for right now, kernel piobufs are at end, so port 1 is at 0 */ + if (pd->port_port <= dd->ipath_ports_extrabuf) + pd->port_pio_base = (dd->ipath_pbufsport + 1) + * (pd->port_port - 1); + else + pd->port_pio_base = dd->ipath_ports_extrabuf + + dd->ipath_pbufsport * (pd->port_port - 1); pd->port_piobufs = dd->ipath_piobufbase + - dd->ipath_pbufsport * (pd->port_port - 1) * dd->ipath_palign; - ipath_cdbg(VERBOSE, "Set base of piobufs for port %u to 0x%x\n", - pd->port_port, pd->port_piobufs); + pd->port_pio_base * dd->ipath_palign; + ipath_cdbg(VERBOSE, "piobuf base for port %u is 0x%x, piocnt %u," + " first pio %u\n", pd->port_port, pd->port_piobufs, + pd->port_piocnt, pd->port_pio_base); + ipath_chg_pioavailkernel(dd, pd->port_pio_base, pd->port_piocnt, 0); /* * Now allocate the rcvhdr Q and eager TIDs; skip the TID @@ -2077,7 +2067,8 @@ static int ipath_close(struct inode *in, struct file *fp) * the slave(s) don't wait for receive data forever. */ pd->active_slaves &= ~(1 << fd->subport); - pd->port_subpid[fd->subport] = 0; + put_pid(pd->port_subpid[fd->subport]); + pd->port_subpid[fd->subport] = NULL; mutex_unlock(&ipath_mutex); goto bail; } @@ -2085,7 +2076,7 @@ static int ipath_close(struct inode *in, struct file *fp) if (pd->port_hdrqfull) { ipath_cdbg(PROC, "%s[%u] had %u rcvhdrqfull errors " - "during run\n", pd->port_comm, pd->port_pid, + "during run\n", pd->port_comm, pid_nr(pd->port_pid), pd->port_hdrqfull); pd->port_hdrqfull = 0; } @@ -2107,7 +2098,6 @@ static int ipath_close(struct inode *in, struct file *fp) } if (dd->ipath_kregbase) { - int i; /* atomically clear receive enable port and intr avail. */ clear_bit(dd->ipath_r_portenable_shift + port, &dd->ipath_rcvctrl); @@ -2136,9 +2126,9 @@ static int ipath_close(struct inode *in, struct file *fp) ipath_write_kreg_port(dd, dd->ipath_kregs->kr_rcvhdraddr, pd->port_port, dd->ipath_dummy_hdrq_phys); - i = dd->ipath_pbufsport * (port - 1); - ipath_disarm_piobufs(dd, i, dd->ipath_pbufsport); - ipath_chg_pioavailkernel(dd, i, dd->ipath_pbufsport, 1); + ipath_disarm_piobufs(dd, pd->port_pio_base, pd->port_piocnt); + ipath_chg_pioavailkernel(dd, pd->port_pio_base, + pd->port_piocnt, 1); dd->ipath_f_clear_tids(dd, pd->port_port); @@ -2146,11 +2136,12 @@ static int ipath_close(struct inode *in, struct file *fp) unlock_expected_tids(pd); ipath_stats.sps_ports--; ipath_cdbg(PROC, "%s[%u] closed port %u:%u\n", - pd->port_comm, pd->port_pid, + pd->port_comm, pid_nr(pd->port_pid), dd->ipath_unit, port); } - pd->port_pid = 0; + put_pid(pd->port_pid); + pd->port_pid = NULL; dd->ipath_pd[pd->port_port] = NULL; /* before releasing mutex */ mutex_unlock(&ipath_mutex); ipath_free_pddata(dd, pd); /* after releasing the mutex */ diff --git a/drivers/infiniband/hw/ipath/ipath_iba7220.c b/drivers/infiniband/hw/ipath/ipath_iba7220.c index e3ec0d1bdf5..8eee7830f04 100644 --- a/drivers/infiniband/hw/ipath/ipath_iba7220.c +++ b/drivers/infiniband/hw/ipath/ipath_iba7220.c @@ -595,7 +595,7 @@ static void ipath_7220_txe_recover(struct ipath_devdata *dd) dev_info(&dd->pcidev->dev, "Recovering from TXE PIO parity error\n"); - ipath_disarm_senderrbufs(dd, 1); + ipath_disarm_senderrbufs(dd); } @@ -675,10 +675,8 @@ static void ipath_7220_handle_hwerrors(struct ipath_devdata *dd, char *msg, ctrl = ipath_read_kreg32(dd, dd->ipath_kregs->kr_control); if ((ctrl & INFINIPATH_C_FREEZEMODE) && !ipath_diag_inuse) { /* - * Parity errors in send memory are recoverable, - * just cancel the send (if indicated in * sendbuffererror), - * count the occurrence, unfreeze (if no other handled - * hardware error bits are set), and continue. + * Parity errors in send memory are recoverable by h/w + * just do housekeeping, exit freeze mode and continue. */ if (hwerrs & ((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) @@ -687,13 +685,6 @@ static void ipath_7220_handle_hwerrors(struct ipath_devdata *dd, char *msg, hwerrs &= ~((INFINIPATH_HWE_TXEMEMPARITYERR_PIOBUF | INFINIPATH_HWE_TXEMEMPARITYERR_PIOPBC) << INFINIPATH_HWE_TXEMEMPARITYERR_SHIFT); - if (!hwerrs) { - /* else leave in freeze mode */ - ipath_write_kreg(dd, - dd->ipath_kregs->kr_control, - dd->ipath_control); - goto bail; - } } if (hwerrs) { /* @@ -723,8 +714,8 @@ static void ipath_7220_handle_hwerrors(struct ipath_devdata *dd, char *msg, *dd->ipath_statusp |= IPATH_STATUS_HWERROR; dd->ipath_flags &= ~IPATH_INITTED; } else { - ipath_dbg("Clearing freezemode on ignored hardware " - "error\n"); + ipath_dbg("Clearing freezemode on ignored or " + "recovered hardware error\n"); ipath_clear_freeze(dd); } } @@ -870,8 +861,9 @@ static int ipath_7220_boardname(struct ipath_devdata *dd, char *name, "revision %u.%u!\n", dd->ipath_majrev, dd->ipath_minrev); ret = 1; - } else if (dd->ipath_minrev == 1) { - /* Rev1 chips are prototype. Complain, but allow use */ + } else if (dd->ipath_minrev == 1 && + !(dd->ipath_flags & IPATH_INITTED)) { + /* Rev1 chips are prototype. Complain at init, but allow use */ ipath_dev_err(dd, "Unsupported hardware " "revision %u.%u, Contact support@qlogic.com\n", dd->ipath_majrev, dd->ipath_minrev); @@ -1966,7 +1958,7 @@ static void ipath_7220_config_ports(struct ipath_devdata *dd, ushort cfgports) dd->ipath_rcvctrl); dd->ipath_p0_rcvegrcnt = 2048; /* always */ if (dd->ipath_flags & IPATH_HAS_SEND_DMA) - dd->ipath_pioreserved = 1; /* reserve a buffer */ + dd->ipath_pioreserved = 3; /* kpiobufs used for PIO */ } diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c index 27dd8947666..3e5baa43fc8 100644 --- a/drivers/infiniband/hw/ipath/ipath_init_chip.c +++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c @@ -41,7 +41,7 @@ /* * min buffers we want to have per port, after driver */ -#define IPATH_MIN_USER_PORT_BUFCNT 8 +#define IPATH_MIN_USER_PORT_BUFCNT 7 /* * Number of ports we are configured to use (to allow for more pio @@ -54,13 +54,9 @@ MODULE_PARM_DESC(cfgports, "Set max number of ports to use"); /* * Number of buffers reserved for driver (verbs and layered drivers.) - * Reserved at end of buffer list. Initialized based on - * number of PIO buffers if not set via module interface. + * Initialized based on number of PIO buffers if not set via module interface. * The problem with this is that it's global, but we'll use different - * numbers for different chip types. So the default value is not - * very useful. I've redefined it for the 1.3 release so that it's - * zero unless set by the user to something else, in which case we - * try to respect it. + * numbers for different chip types. */ static ushort ipath_kpiobufs; @@ -546,9 +542,12 @@ static void enable_chip(struct ipath_devdata *dd, int reinit) pioavail = dd->ipath_pioavailregs_dma[i ^ 1]; else pioavail = dd->ipath_pioavailregs_dma[i]; - dd->ipath_pioavailshadow[i] = le64_to_cpu(pioavail) | - (~dd->ipath_pioavailkernel[i] << - INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT); + /* + * don't need to worry about ipath_pioavailkernel here + * because we will call ipath_chg_pioavailkernel() later + * in initialization, to busy out buffers as needed + */ + dd->ipath_pioavailshadow[i] = le64_to_cpu(pioavail); } /* can get counters, stats, etc. */ dd->ipath_flags |= IPATH_PRESENT; @@ -708,12 +707,11 @@ static void verify_interrupt(unsigned long opaque) int ipath_init_chip(struct ipath_devdata *dd, int reinit) { int ret = 0; - u32 val32, kpiobufs; + u32 kpiobufs, defkbufs; u32 piobufs, uports; u64 val; struct ipath_portdata *pd; gfp_t gfp_flags = GFP_USER | __GFP_COMP; - unsigned long flags; ret = init_housekeeping(dd, reinit); if (ret) @@ -753,56 +751,46 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) dd->ipath_pioavregs = ALIGN(piobufs, sizeof(u64) * BITS_PER_BYTE / 2) / (sizeof(u64) * BITS_PER_BYTE / 2); uports = dd->ipath_cfgports ? dd->ipath_cfgports - 1 : 0; - if (ipath_kpiobufs == 0) { - /* not set by user (this is default) */ - if (piobufs > 144) - kpiobufs = 32; - else - kpiobufs = 16; - } + if (piobufs > 144) + defkbufs = 32 + dd->ipath_pioreserved; else - kpiobufs = ipath_kpiobufs; + defkbufs = 16 + dd->ipath_pioreserved; - if (kpiobufs + (uports * IPATH_MIN_USER_PORT_BUFCNT) > piobufs) { + if (ipath_kpiobufs && (ipath_kpiobufs + + (uports * IPATH_MIN_USER_PORT_BUFCNT)) > piobufs) { int i = (int) piobufs - (int) (uports * IPATH_MIN_USER_PORT_BUFCNT); if (i < 1) i = 1; dev_info(&dd->pcidev->dev, "Allocating %d PIO bufs of " "%d for kernel leaves too few for %d user ports " - "(%d each); using %u\n", kpiobufs, + "(%d each); using %u\n", ipath_kpiobufs, piobufs, uports, IPATH_MIN_USER_PORT_BUFCNT, i); /* * shouldn't change ipath_kpiobufs, because could be * different for different devices... */ kpiobufs = i; - } + } else if (ipath_kpiobufs) + kpiobufs = ipath_kpiobufs; + else + kpiobufs = defkbufs; dd->ipath_lastport_piobuf = piobufs - kpiobufs; dd->ipath_pbufsport = uports ? dd->ipath_lastport_piobuf / uports : 0; - val32 = dd->ipath_lastport_piobuf - (dd->ipath_pbufsport * uports); - if (val32 > 0) { - ipath_dbg("allocating %u pbufs/port leaves %u unused, " - "add to kernel\n", dd->ipath_pbufsport, val32); - dd->ipath_lastport_piobuf -= val32; - kpiobufs += val32; - ipath_dbg("%u pbufs/port leaves %u unused, add to kernel\n", - dd->ipath_pbufsport, val32); - } + /* if not an even divisor, some user ports get extra buffers */ + dd->ipath_ports_extrabuf = dd->ipath_lastport_piobuf - + (dd->ipath_pbufsport * uports); + if (dd->ipath_ports_extrabuf) + ipath_dbg("%u pbufs/port leaves some unused, add 1 buffer to " + "ports <= %u\n", dd->ipath_pbufsport, + dd->ipath_ports_extrabuf); dd->ipath_lastpioindex = 0; dd->ipath_lastpioindexl = dd->ipath_piobcnt2k; - ipath_chg_pioavailkernel(dd, 0, piobufs, 1); + /* ipath_pioavailshadow initialized earlier */ ipath_cdbg(VERBOSE, "%d PIO bufs for kernel out of %d total %u " "each for %u user ports\n", kpiobufs, piobufs, dd->ipath_pbufsport, uports); - if (dd->ipath_pioupd_thresh) { - if (dd->ipath_pbufsport < dd->ipath_pioupd_thresh) - dd->ipath_pioupd_thresh = dd->ipath_pbufsport; - if (kpiobufs < dd->ipath_pioupd_thresh) - dd->ipath_pioupd_thresh = kpiobufs; - } - ret = dd->ipath_f_early_init(dd); if (ret) { ipath_dev_err(dd, "Early initialization failure\n"); @@ -810,13 +798,6 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) } /* - * Cancel any possible active sends from early driver load. - * Follows early_init because some chips have to initialize - * PIO buffers in early_init to avoid false parity errors. - */ - ipath_cancel_sends(dd, 0); - - /* * Early_init sets rcvhdrentsize and rcvhdrsize, so this must be * done after early_init. */ @@ -836,6 +817,7 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) ipath_write_kreg(dd, dd->ipath_kregs->kr_sendpioavailaddr, dd->ipath_pioavailregs_phys); + /* * this is to detect s/w errors, which the h/w works around by * ignoring the low 6 bits of address, if it wasn't aligned. @@ -862,12 +844,6 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) ~0ULL&~INFINIPATH_HWE_MEMBISTFAILED); ipath_write_kreg(dd, dd->ipath_kregs->kr_control, 0ULL); - spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); - dd->ipath_sendctrl = INFINIPATH_S_PIOENABLE; - ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); - ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - /* * before error clears, since we expect serdes pll errors during * this, the first time after reset @@ -940,6 +916,19 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) else enable_chip(dd, reinit); + /* after enable_chip, so pioavailshadow setup */ + ipath_chg_pioavailkernel(dd, 0, piobufs, 1); + + /* + * Cancel any possible active sends from early driver load. + * Follows early_init because some chips have to initialize + * PIO buffers in early_init to avoid false parity errors. + * After enable and ipath_chg_pioavailkernel so we can safely + * enable pioavail updates and PIOENABLE; packets are now + * ready to go out. + */ + ipath_cancel_sends(dd, 1); + if (!reinit) { /* * Used when we close a port, for DMA already in flight diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c index 1b58f4737c7..26900b3b7a4 100644 --- a/drivers/infiniband/hw/ipath/ipath_intr.c +++ b/drivers/infiniband/hw/ipath/ipath_intr.c @@ -38,42 +38,12 @@ #include "ipath_verbs.h" #include "ipath_common.h" -/* - * clear (write) a pio buffer, to clear a parity error. This routine - * should only be called when in freeze mode, and the buffer should be - * canceled afterwards. - */ -static void ipath_clrpiobuf(struct ipath_devdata *dd, u32 pnum) -{ - u32 __iomem *pbuf; - u32 dwcnt; /* dword count to write */ - if (pnum < dd->ipath_piobcnt2k) { - pbuf = (u32 __iomem *) (dd->ipath_pio2kbase + pnum * - dd->ipath_palign); - dwcnt = dd->ipath_piosize2k >> 2; - } - else { - pbuf = (u32 __iomem *) (dd->ipath_pio4kbase + - (pnum - dd->ipath_piobcnt2k) * dd->ipath_4kalign); - dwcnt = dd->ipath_piosize4k >> 2; - } - dev_info(&dd->pcidev->dev, - "Rewrite PIO buffer %u, to recover from parity error\n", - pnum); - - /* no flush required, since already in freeze */ - writel(dwcnt + 1, pbuf); - while (--dwcnt) - writel(0, pbuf++); -} /* * Called when we might have an error that is specific to a particular * PIO buffer, and may need to cancel that buffer, so it can be re-used. - * If rewrite is true, and bits are set in the sendbufferror registers, - * we'll write to the buffer, for error recovery on parity errors. */ -void ipath_disarm_senderrbufs(struct ipath_devdata *dd, int rewrite) +void ipath_disarm_senderrbufs(struct ipath_devdata *dd) { u32 piobcnt; unsigned long sbuf[4]; @@ -109,11 +79,8 @@ void ipath_disarm_senderrbufs(struct ipath_devdata *dd, int rewrite) } for (i = 0; i < piobcnt; i++) - if (test_bit(i, sbuf)) { - if (rewrite) - ipath_clrpiobuf(dd, i); + if (test_bit(i, sbuf)) ipath_disarm_piobufs(dd, i, 1); - } /* ignore armlaunch errs for a bit */ dd->ipath_lastcancel = jiffies+3; } @@ -164,7 +131,7 @@ static u64 handle_e_sum_errs(struct ipath_devdata *dd, ipath_err_t errs) { u64 ignore_this_time = 0; - ipath_disarm_senderrbufs(dd, 0); + ipath_disarm_senderrbufs(dd); if ((errs & E_SUM_LINK_PKTERRS) && !(dd->ipath_flags & IPATH_LINKACTIVE)) { /* @@ -909,8 +876,8 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs) * processes (causing armlaunch), send errors due to going into freeze mode, * etc., and try to avoid causing extra interrupts while doing so. * Forcibly update the in-memory pioavail register copies after cleanup - * because the chip won't do it for anything changing while in freeze mode - * (we don't want to wait for the next pio buffer state change). + * because the chip won't do it while in freeze mode (the register values + * themselves are kept correct). * Make sure that we don't lose any important interrupts by using the chip * feature that says that writing 0 to a bit in *clear that is set in * *status will cause an interrupt to be generated again (if allowed by @@ -918,44 +885,23 @@ static int handle_errors(struct ipath_devdata *dd, ipath_err_t errs) */ void ipath_clear_freeze(struct ipath_devdata *dd) { - int i, im; - u64 val; - /* disable error interrupts, to avoid confusion */ ipath_write_kreg(dd, dd->ipath_kregs->kr_errormask, 0ULL); /* also disable interrupts; errormask is sometimes overwriten */ ipath_write_kreg(dd, dd->ipath_kregs->kr_intmask, 0ULL); - /* - * clear all sends, because they have may been - * completed by usercode while in freeze mode, and - * therefore would not be sent, and eventually - * might cause the process to run out of bufs - */ - ipath_cancel_sends(dd, 0); + ipath_cancel_sends(dd, 1); + + /* clear the freeze, and be sure chip saw it */ ipath_write_kreg(dd, dd->ipath_kregs->kr_control, dd->ipath_control); + ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); - /* ensure pio avail updates continue */ + /* force in-memory update now we are out of freeze */ ipath_force_pio_avail_update(dd); /* - * We just enabled pioavailupdate, so dma copy is almost certainly - * not yet right, so read the registers directly. Similar to init - */ - for (i = 0; i < dd->ipath_pioavregs; i++) { - /* deal with 6110 chip bug */ - im = (i > 3 && (dd->ipath_flags & IPATH_SWAP_PIOBUFS)) ? - i ^ 1 : i; - val = ipath_read_kreg64(dd, (0x1000 / sizeof(u64)) + im); - dd->ipath_pioavailregs_dma[i] = cpu_to_le64(val); - dd->ipath_pioavailshadow[i] = val | - (~dd->ipath_pioavailkernel[i] << - INFINIPATH_SENDPIOAVAIL_BUSY_SHIFT); - } - - /* * force new interrupt if any hwerr, error or interrupt bits are * still set, and clear "safe" send packet errors related to freeze * and cancelling sends. Re-enable error interrupts before possible @@ -1312,10 +1258,8 @@ irqreturn_t ipath_intr(int irq, void *data) ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); - if (!(dd->ipath_flags & IPATH_HAS_SEND_DMA)) - handle_layer_pioavail(dd); - else - ipath_dbg("unexpected BUFAVAIL intr\n"); + /* always process; sdma verbs uses PIO for acks and VL15 */ + handle_layer_pioavail(dd); } ret = IRQ_HANDLED; diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index 202337ae90d..0bd8bcb184a 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -117,6 +117,10 @@ struct ipath_portdata { u16 port_subport_cnt; /* non-zero if port is being shared. */ u16 port_subport_id; + /* number of pio bufs for this port (all procs, if shared) */ + u32 port_piocnt; + /* first pio buffer for this port */ + u32 port_pio_base; /* chip offset of PIO buffers for this port */ u32 port_piobufs; /* how many alloc_pages() chunks in port_rcvegrbuf_pages */ @@ -155,8 +159,8 @@ struct ipath_portdata { /* saved total number of polled urgent packets for poll edge trigger */ u32 port_urgent_poll; /* pid of process using this port */ - pid_t port_pid; - pid_t port_subpid[INFINIPATH_MAX_SUBPORT]; + struct pid *port_pid; + struct pid *port_subpid[INFINIPATH_MAX_SUBPORT]; /* same size as task_struct .comm[] */ char port_comm[16]; /* pkeys set by this use of this port */ @@ -228,6 +232,11 @@ struct ipath_sdma_desc { #define IPATH_SDMA_TXREQ_S_ABORTED 2 #define IPATH_SDMA_TXREQ_S_SHUTDOWN 3 +#define IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG (1ull << 63) +#define IPATH_SDMA_STATUS_ABORT_IN_PROG (1ull << 62) +#define IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE (1ull << 61) +#define IPATH_SDMA_STATUS_SCB_EMPTY (1ull << 30) + /* max dwords in small buffer packet */ #define IPATH_SMALLBUF_DWORDS (dd->ipath_piosize2k >> 2) @@ -384,6 +393,8 @@ struct ipath_devdata { u32 ipath_lastrpkts; /* pio bufs allocated per port */ u32 ipath_pbufsport; + /* if remainder on bufs/port, ports < extrabuf get 1 extra */ + u32 ipath_ports_extrabuf; u32 ipath_pioupd_thresh; /* update threshold, some chips */ /* * number of ports configured as max; zero is set to number chip @@ -477,7 +488,7 @@ struct ipath_devdata { /* SendDMA related entries */ spinlock_t ipath_sdma_lock; - u64 ipath_sdma_status; + unsigned long ipath_sdma_status; unsigned long ipath_sdma_abort_jiffies; unsigned long ipath_sdma_abort_intr_timeout; unsigned long ipath_sdma_buf_jiffies; @@ -816,8 +827,8 @@ struct ipath_devdata { #define IPATH_SDMA_DISARMED 1 #define IPATH_SDMA_DISABLED 2 #define IPATH_SDMA_LAYERBUF 3 -#define IPATH_SDMA_RUNNING 62 -#define IPATH_SDMA_SHUTDOWN 63 +#define IPATH_SDMA_RUNNING 30 +#define IPATH_SDMA_SHUTDOWN 31 /* bit combinations that correspond to abort states */ #define IPATH_SDMA_ABORT_NONE 0 @@ -1011,7 +1022,7 @@ void ipath_get_eeprom_info(struct ipath_devdata *); int ipath_update_eeprom_log(struct ipath_devdata *dd); void ipath_inc_eeprom_err(struct ipath_devdata *dd, u32 eidx, u32 incr); u64 ipath_snap_cntr(struct ipath_devdata *, ipath_creg); -void ipath_disarm_senderrbufs(struct ipath_devdata *, int); +void ipath_disarm_senderrbufs(struct ipath_devdata *); void ipath_force_pio_avail_update(struct ipath_devdata *); void signal_ib_event(struct ipath_devdata *dd, enum ib_event_type ev); diff --git a/drivers/infiniband/hw/ipath/ipath_mad.c b/drivers/infiniband/hw/ipath/ipath_mad.c index 1ff46ae7dd9..5f9315d77a4 100644 --- a/drivers/infiniband/hw/ipath/ipath_mad.c +++ b/drivers/infiniband/hw/ipath/ipath_mad.c @@ -1492,6 +1492,10 @@ static int process_subn(struct ib_device *ibdev, int mad_flags, goto bail; } + case IB_MGMT_METHOD_TRAP: + case IB_MGMT_METHOD_REPORT: + case IB_MGMT_METHOD_REPORT_RESP: + case IB_MGMT_METHOD_TRAP_REPRESS: case IB_MGMT_METHOD_GET_RESP: /* * The ib_mad module will call us to process responses diff --git a/drivers/infiniband/hw/ipath/ipath_qp.c b/drivers/infiniband/hw/ipath/ipath_qp.c index dd5b6e9d57c..4715911101e 100644 --- a/drivers/infiniband/hw/ipath/ipath_qp.c +++ b/drivers/infiniband/hw/ipath/ipath_qp.c @@ -242,7 +242,6 @@ static void ipath_free_qp(struct ipath_qp_table *qpt, struct ipath_qp *qp) { struct ipath_qp *q, **qpp; unsigned long flags; - int fnd = 0; spin_lock_irqsave(&qpt->lock, flags); @@ -253,51 +252,40 @@ static void ipath_free_qp(struct ipath_qp_table *qpt, struct ipath_qp *qp) *qpp = qp->next; qp->next = NULL; atomic_dec(&qp->refcount); - fnd = 1; break; } } spin_unlock_irqrestore(&qpt->lock, flags); - - if (!fnd) - return; - - free_qpn(qpt, qp->ibqp.qp_num); - - wait_event(qp->wait, !atomic_read(&qp->refcount)); } /** - * ipath_free_all_qps - remove all QPs from the table + * ipath_free_all_qps - check for QPs still in use * @qpt: the QP table to empty + * + * There should not be any QPs still in use. + * Free memory for table. */ -void ipath_free_all_qps(struct ipath_qp_table *qpt) +unsigned ipath_free_all_qps(struct ipath_qp_table *qpt) { unsigned long flags; - struct ipath_qp *qp, *nqp; - u32 n; + struct ipath_qp *qp; + u32 n, qp_inuse = 0; + spin_lock_irqsave(&qpt->lock, flags); for (n = 0; n < qpt->max; n++) { - spin_lock_irqsave(&qpt->lock, flags); qp = qpt->table[n]; qpt->table[n] = NULL; - spin_unlock_irqrestore(&qpt->lock, flags); - - while (qp) { - nqp = qp->next; - free_qpn(qpt, qp->ibqp.qp_num); - if (!atomic_dec_and_test(&qp->refcount) || - !ipath_destroy_qp(&qp->ibqp)) - ipath_dbg("QP memory leak!\n"); - qp = nqp; - } + + for (; qp; qp = qp->next) + qp_inuse++; } + spin_unlock_irqrestore(&qpt->lock, flags); - for (n = 0; n < ARRAY_SIZE(qpt->map); n++) { + for (n = 0; n < ARRAY_SIZE(qpt->map); n++) if (qpt->map[n].page) - free_page((unsigned long)qpt->map[n].page); - } + free_page((unsigned long) qpt->map[n].page); + return qp_inuse; } /** @@ -336,11 +324,12 @@ static void ipath_reset_qp(struct ipath_qp *qp, enum ib_qp_type type) qp->remote_qpn = 0; qp->qkey = 0; qp->qp_access_flags = 0; - qp->s_busy = 0; + atomic_set(&qp->s_dma_busy, 0); qp->s_flags &= IPATH_S_SIGNAL_REQ_WR; qp->s_hdrwords = 0; qp->s_wqe = NULL; qp->s_pkt_delay = 0; + qp->s_draining = 0; qp->s_psn = 0; qp->r_psn = 0; qp->r_msn = 0; @@ -353,7 +342,8 @@ static void ipath_reset_qp(struct ipath_qp *qp, enum ib_qp_type type) } qp->s_ack_state = IB_OPCODE_RC_ACKNOWLEDGE; qp->r_nak_state = 0; - qp->r_wrid_valid = 0; + qp->r_aflags = 0; + qp->r_flags = 0; qp->s_rnr_timeout = 0; qp->s_head = 0; qp->s_tail = 0; @@ -361,7 +351,6 @@ static void ipath_reset_qp(struct ipath_qp *qp, enum ib_qp_type type) qp->s_last = 0; qp->s_ssn = 1; qp->s_lsn = 0; - qp->s_wait_credit = 0; memset(qp->s_ack_queue, 0, sizeof(qp->s_ack_queue)); qp->r_head_ack_queue = 0; qp->s_tail_ack_queue = 0; @@ -370,17 +359,17 @@ static void ipath_reset_qp(struct ipath_qp *qp, enum ib_qp_type type) qp->r_rq.wq->head = 0; qp->r_rq.wq->tail = 0; } - qp->r_reuse_sge = 0; } /** - * ipath_error_qp - put a QP into an error state - * @qp: the QP to put into an error state + * ipath_error_qp - put a QP into the error state + * @qp: the QP to put into the error state * @err: the receive completion error to signal if a RWQE is active * * Flushes both send and receive work queues. * Returns true if last WQE event should be generated. * The QP s_lock should be held and interrupts disabled. + * If we are already in error state, just return. */ int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err) @@ -389,8 +378,10 @@ int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err) struct ib_wc wc; int ret = 0; - ipath_dbg("QP%d/%d in error state (%d)\n", - qp->ibqp.qp_num, qp->remote_qpn, err); + if (qp->state == IB_QPS_ERR) + goto bail; + + qp->state = IB_QPS_ERR; spin_lock(&dev->pending_lock); if (!list_empty(&qp->timerwait)) @@ -399,39 +390,21 @@ int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err) list_del_init(&qp->piowait); spin_unlock(&dev->pending_lock); - wc.vendor_err = 0; - wc.byte_len = 0; - wc.imm_data = 0; + /* Schedule the sending tasklet to drain the send work queue. */ + if (qp->s_last != qp->s_head) + ipath_schedule_send(qp); + + memset(&wc, 0, sizeof(wc)); wc.qp = &qp->ibqp; - wc.src_qp = 0; - wc.wc_flags = 0; - wc.pkey_index = 0; - wc.slid = 0; - wc.sl = 0; - wc.dlid_path_bits = 0; - wc.port_num = 0; - if (qp->r_wrid_valid) { - qp->r_wrid_valid = 0; + wc.opcode = IB_WC_RECV; + + if (test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) { wc.wr_id = qp->r_wr_id; - wc.opcode = IB_WC_RECV; wc.status = err; ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); } wc.status = IB_WC_WR_FLUSH_ERR; - while (qp->s_last != qp->s_head) { - struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last); - - wc.wr_id = wqe->wr.wr_id; - wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - if (++qp->s_last >= qp->s_size) - qp->s_last = 0; - ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 1); - } - qp->s_cur = qp->s_tail = qp->s_head; - qp->s_hdrwords = 0; - qp->s_ack_state = IB_OPCODE_RC_ACKNOWLEDGE; - if (qp->r_rq.wq) { struct ipath_rwq *wq; u32 head; @@ -447,7 +420,6 @@ int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err) tail = wq->tail; if (tail >= qp->r_rq.size) tail = 0; - wc.opcode = IB_WC_RECV; while (tail != head) { wc.wr_id = get_rwqe_ptr(&qp->r_rq, tail)->wr_id; if (++tail >= qp->r_rq.size) @@ -460,6 +432,7 @@ int ipath_error_qp(struct ipath_qp *qp, enum ib_wc_status err) } else if (qp->ibqp.event_handler) ret = 1; +bail: return ret; } @@ -478,11 +451,10 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, struct ipath_ibdev *dev = to_idev(ibqp->device); struct ipath_qp *qp = to_iqp(ibqp); enum ib_qp_state cur_state, new_state; - unsigned long flags; int lastwqe = 0; int ret; - spin_lock_irqsave(&qp->s_lock, flags); + spin_lock_irq(&qp->s_lock); cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; @@ -535,16 +507,42 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, switch (new_state) { case IB_QPS_RESET: + if (qp->state != IB_QPS_RESET) { + qp->state = IB_QPS_RESET; + spin_lock(&dev->pending_lock); + if (!list_empty(&qp->timerwait)) + list_del_init(&qp->timerwait); + if (!list_empty(&qp->piowait)) + list_del_init(&qp->piowait); + spin_unlock(&dev->pending_lock); + qp->s_flags &= ~IPATH_S_ANY_WAIT; + spin_unlock_irq(&qp->s_lock); + /* Stop the sending tasklet */ + tasklet_kill(&qp->s_task); + wait_event(qp->wait_dma, !atomic_read(&qp->s_dma_busy)); + spin_lock_irq(&qp->s_lock); + } ipath_reset_qp(qp, ibqp->qp_type); break; + case IB_QPS_SQD: + qp->s_draining = qp->s_last != qp->s_cur; + qp->state = new_state; + break; + + case IB_QPS_SQE: + if (qp->ibqp.qp_type == IB_QPT_RC) + goto inval; + qp->state = new_state; + break; + case IB_QPS_ERR: lastwqe = ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); break; default: + qp->state = new_state; break; - } if (attr_mask & IB_QP_PKEY_INDEX) @@ -597,8 +595,7 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) qp->s_max_rd_atomic = attr->max_rd_atomic; - qp->state = new_state; - spin_unlock_irqrestore(&qp->s_lock, flags); + spin_unlock_irq(&qp->s_lock); if (lastwqe) { struct ib_event ev; @@ -612,7 +609,7 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, goto bail; inval: - spin_unlock_irqrestore(&qp->s_lock, flags); + spin_unlock_irq(&qp->s_lock); ret = -EINVAL; bail: @@ -643,7 +640,7 @@ int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, attr->pkey_index = qp->s_pkey_index; attr->alt_pkey_index = 0; attr->en_sqd_async_notify = 0; - attr->sq_draining = 0; + attr->sq_draining = qp->s_draining; attr->max_rd_atomic = qp->s_max_rd_atomic; attr->max_dest_rd_atomic = qp->r_max_rd_atomic; attr->min_rnr_timer = qp->r_min_rnr_timer; @@ -833,6 +830,7 @@ struct ib_qp *ipath_create_qp(struct ib_pd *ibpd, spin_lock_init(&qp->r_rq.lock); atomic_set(&qp->refcount, 0); init_waitqueue_head(&qp->wait); + init_waitqueue_head(&qp->wait_dma); tasklet_init(&qp->s_task, ipath_do_send, (unsigned long)qp); INIT_LIST_HEAD(&qp->piowait); INIT_LIST_HEAD(&qp->timerwait); @@ -926,6 +924,7 @@ bail_ip: else vfree(qp->r_rq.wq); ipath_free_qp(&dev->qp_table, qp); + free_qpn(&dev->qp_table, qp->ibqp.qp_num); bail_qp: kfree(qp); bail_swq: @@ -947,41 +946,44 @@ int ipath_destroy_qp(struct ib_qp *ibqp) { struct ipath_qp *qp = to_iqp(ibqp); struct ipath_ibdev *dev = to_idev(ibqp->device); - unsigned long flags; - spin_lock_irqsave(&qp->s_lock, flags); - qp->state = IB_QPS_ERR; - spin_unlock_irqrestore(&qp->s_lock, flags); - spin_lock(&dev->n_qps_lock); - dev->n_qps_allocated--; - spin_unlock(&dev->n_qps_lock); + /* Make sure HW and driver activity is stopped. */ + spin_lock_irq(&qp->s_lock); + if (qp->state != IB_QPS_RESET) { + qp->state = IB_QPS_RESET; + spin_lock(&dev->pending_lock); + if (!list_empty(&qp->timerwait)) + list_del_init(&qp->timerwait); + if (!list_empty(&qp->piowait)) + list_del_init(&qp->piowait); + spin_unlock(&dev->pending_lock); + qp->s_flags &= ~IPATH_S_ANY_WAIT; + spin_unlock_irq(&qp->s_lock); + /* Stop the sending tasklet */ + tasklet_kill(&qp->s_task); + wait_event(qp->wait_dma, !atomic_read(&qp->s_dma_busy)); + } else + spin_unlock_irq(&qp->s_lock); - /* Stop the sending tasklet. */ - tasklet_kill(&qp->s_task); + ipath_free_qp(&dev->qp_table, qp); if (qp->s_tx) { atomic_dec(&qp->refcount); if (qp->s_tx->txreq.flags & IPATH_SDMA_TXREQ_F_FREEBUF) kfree(qp->s_tx->txreq.map_addr); + spin_lock_irq(&dev->pending_lock); + list_add(&qp->s_tx->txreq.list, &dev->txreq_free); + spin_unlock_irq(&dev->pending_lock); + qp->s_tx = NULL; } - /* Make sure the QP isn't on the timeout list. */ - spin_lock_irqsave(&dev->pending_lock, flags); - if (!list_empty(&qp->timerwait)) - list_del_init(&qp->timerwait); - if (!list_empty(&qp->piowait)) - list_del_init(&qp->piowait); - if (qp->s_tx) - list_add(&qp->s_tx->txreq.list, &dev->txreq_free); - spin_unlock_irqrestore(&dev->pending_lock, flags); + wait_event(qp->wait, !atomic_read(&qp->refcount)); - /* - * Make sure that the QP is not in the QPN table so receive - * interrupts will discard packets for this QP. XXX Also remove QP - * from multicast table. - */ - if (atomic_read(&qp->refcount) != 0) - ipath_free_qp(&dev->qp_table, qp); + /* all user's cleaned up, mark it available */ + free_qpn(&dev->qp_table, qp->ibqp.qp_num); + spin_lock(&dev->n_qps_lock); + dev->n_qps_allocated--; + spin_unlock(&dev->n_qps_lock); if (qp->ip) kref_put(&qp->ip->ref, ipath_release_mmap_info); @@ -1026,48 +1028,6 @@ bail: } /** - * ipath_sqerror_qp - put a QP's send queue into an error state - * @qp: QP who's send queue will be put into an error state - * @wc: the WC responsible for putting the QP in this state - * - * Flushes the send work queue. - * The QP s_lock should be held and interrupts disabled. - */ - -void ipath_sqerror_qp(struct ipath_qp *qp, struct ib_wc *wc) -{ - struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last); - - ipath_dbg("Send queue error on QP%d/%d: err: %d\n", - qp->ibqp.qp_num, qp->remote_qpn, wc->status); - - spin_lock(&dev->pending_lock); - if (!list_empty(&qp->timerwait)) - list_del_init(&qp->timerwait); - if (!list_empty(&qp->piowait)) - list_del_init(&qp->piowait); - spin_unlock(&dev->pending_lock); - - ipath_cq_enter(to_icq(qp->ibqp.send_cq), wc, 1); - if (++qp->s_last >= qp->s_size) - qp->s_last = 0; - - wc->status = IB_WC_WR_FLUSH_ERR; - - while (qp->s_last != qp->s_head) { - wqe = get_swqe_ptr(qp, qp->s_last); - wc->wr_id = wqe->wr.wr_id; - wc->opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - ipath_cq_enter(to_icq(qp->ibqp.send_cq), wc, 1); - if (++qp->s_last >= qp->s_size) - qp->s_last = 0; - } - qp->s_cur = qp->s_tail = qp->s_head; - qp->state = IB_QPS_SQE; -} - -/** * ipath_get_credit - flush the send work queue of a QP * @qp: the qp who's send work queue to flush * @aeth: the Acknowledge Extended Transport Header @@ -1093,9 +1053,10 @@ void ipath_get_credit(struct ipath_qp *qp, u32 aeth) } /* Restart sending if it was blocked due to lack of credits. */ - if (qp->s_cur != qp->s_head && + if ((qp->s_flags & IPATH_S_WAIT_SSN_CREDIT) && + qp->s_cur != qp->s_head && (qp->s_lsn == (u32) -1 || ipath_cmp24(get_swqe_ptr(qp, qp->s_cur)->ssn, qp->s_lsn + 1) <= 0)) - tasklet_hi_schedule(&qp->s_task); + ipath_schedule_send(qp); } diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c index c405dfba553..108df667d2e 100644 --- a/drivers/infiniband/hw/ipath/ipath_rc.c +++ b/drivers/infiniband/hw/ipath/ipath_rc.c @@ -92,6 +92,10 @@ static int ipath_make_rc_ack(struct ipath_ibdev *dev, struct ipath_qp *qp, u32 bth0; u32 bth2; + /* Don't send an ACK if we aren't supposed to. */ + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) + goto bail; + /* header size in 32-bit words LRH+BTH = (8+12)/4. */ hwords = 5; @@ -238,14 +242,25 @@ int ipath_make_rc_req(struct ipath_qp *qp) ipath_make_rc_ack(dev, qp, ohdr, pmtu)) goto done; - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) || - qp->s_rnr_timeout || qp->s_wait_credit) - goto bail; + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) { + if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND)) + goto bail; + /* We are in the error state, flush the work request. */ + if (qp->s_last == qp->s_head) + goto bail; + /* If DMAs are in progress, we can't flush immediately. */ + if (atomic_read(&qp->s_dma_busy)) { + qp->s_flags |= IPATH_S_WAIT_DMA; + goto bail; + } + wqe = get_swqe_ptr(qp, qp->s_last); + ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); + goto done; + } - /* Limit the number of packets sent without an ACK. */ - if (ipath_cmp24(qp->s_psn, qp->s_last_psn + IPATH_PSN_CREDIT) > 0) { - qp->s_wait_credit = 1; - dev->n_rc_stalls++; + /* Leave BUSY set until RNR timeout. */ + if (qp->s_rnr_timeout) { + qp->s_flags |= IPATH_S_WAITING; goto bail; } @@ -257,6 +272,9 @@ int ipath_make_rc_req(struct ipath_qp *qp) wqe = get_swqe_ptr(qp, qp->s_cur); switch (qp->s_state) { default: + if (!(ib_ipath_state_ops[qp->state] & + IPATH_PROCESS_NEXT_SEND_OK)) + goto bail; /* * Resend an old request or start a new one. * @@ -294,8 +312,10 @@ int ipath_make_rc_req(struct ipath_qp *qp) case IB_WR_SEND_WITH_IMM: /* If no credit, return. */ if (qp->s_lsn != (u32) -1 && - ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) + ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) { + qp->s_flags |= IPATH_S_WAIT_SSN_CREDIT; goto bail; + } wqe->lpsn = wqe->psn; if (len > pmtu) { wqe->lpsn += (len - 1) / pmtu; @@ -325,8 +345,10 @@ int ipath_make_rc_req(struct ipath_qp *qp) case IB_WR_RDMA_WRITE_WITH_IMM: /* If no credit, return. */ if (qp->s_lsn != (u32) -1 && - ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) + ipath_cmp24(wqe->ssn, qp->s_lsn + 1) > 0) { + qp->s_flags |= IPATH_S_WAIT_SSN_CREDIT; goto bail; + } ohdr->u.rc.reth.vaddr = cpu_to_be64(wqe->wr.wr.rdma.remote_addr); ohdr->u.rc.reth.rkey = @@ -570,7 +592,11 @@ int ipath_make_rc_req(struct ipath_qp *qp) ipath_make_ruc_header(dev, qp, ohdr, bth0 | (qp->s_state << 24), bth2); done: ret = 1; + goto unlock; + bail: + qp->s_flags &= ~IPATH_S_BUSY; +unlock: spin_unlock_irqrestore(&qp->s_lock, flags); return ret; } @@ -606,7 +632,11 @@ static void send_rc_ack(struct ipath_qp *qp) spin_unlock_irqrestore(&qp->s_lock, flags); + /* Don't try to send ACKs if the link isn't ACTIVE */ dd = dev->dd; + if (!(dd->ipath_flags & IPATH_LINKACTIVE)) + goto done; + piobuf = ipath_getpiobuf(dd, 0, NULL); if (!piobuf) { /* @@ -668,15 +698,16 @@ static void send_rc_ack(struct ipath_qp *qp) goto done; queue_ack: - dev->n_rc_qacks++; - qp->s_flags |= IPATH_S_ACK_PENDING; - qp->s_nak_state = qp->r_nak_state; - qp->s_ack_psn = qp->r_ack_psn; + if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK) { + dev->n_rc_qacks++; + qp->s_flags |= IPATH_S_ACK_PENDING; + qp->s_nak_state = qp->r_nak_state; + qp->s_ack_psn = qp->r_ack_psn; + + /* Schedule the send tasklet. */ + ipath_schedule_send(qp); + } spin_unlock_irqrestore(&qp->s_lock, flags); - - /* Call ipath_do_rc_send() in another thread. */ - tasklet_hi_schedule(&qp->s_task); - done: return; } @@ -735,7 +766,7 @@ static void reset_psn(struct ipath_qp *qp, u32 psn) /* * Set the state to restart in the middle of a request. * Don't change the s_sge, s_cur_sge, or s_cur_size. - * See ipath_do_rc_send(). + * See ipath_make_rc_req(). */ switch (opcode) { case IB_WR_SEND: @@ -771,27 +802,14 @@ done: * * The QP s_lock should be held and interrupts disabled. */ -void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc) +void ipath_restart_rc(struct ipath_qp *qp, u32 psn) { struct ipath_swqe *wqe = get_swqe_ptr(qp, qp->s_last); struct ipath_ibdev *dev; if (qp->s_retry == 0) { - wc->wr_id = wqe->wr.wr_id; - wc->status = IB_WC_RETRY_EXC_ERR; - wc->opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc->vendor_err = 0; - wc->byte_len = 0; - wc->qp = &qp->ibqp; - wc->imm_data = 0; - wc->src_qp = qp->remote_qpn; - wc->wc_flags = 0; - wc->pkey_index = 0; - wc->slid = qp->remote_ah_attr.dlid; - wc->sl = qp->remote_ah_attr.sl; - wc->dlid_path_bits = 0; - wc->port_num = 0; - ipath_sqerror_qp(qp, wc); + ipath_send_complete(qp, wqe, IB_WC_RETRY_EXC_ERR); + ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); goto bail; } qp->s_retry--; @@ -804,6 +822,8 @@ void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc) spin_lock(&dev->pending_lock); if (!list_empty(&qp->timerwait)) list_del_init(&qp->timerwait); + if (!list_empty(&qp->piowait)) + list_del_init(&qp->piowait); spin_unlock(&dev->pending_lock); if (wqe->wr.opcode == IB_WR_RDMA_READ) @@ -812,7 +832,7 @@ void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc) dev->n_rc_resends += (qp->s_psn - psn) & IPATH_PSN_MASK; reset_psn(qp, psn); - tasklet_hi_schedule(&qp->s_task); + ipath_schedule_send(qp); bail: return; @@ -820,13 +840,7 @@ bail: static inline void update_last_psn(struct ipath_qp *qp, u32 psn) { - if (qp->s_last_psn != psn) { - qp->s_last_psn = psn; - if (qp->s_wait_credit) { - qp->s_wait_credit = 0; - tasklet_hi_schedule(&qp->s_task); - } - } + qp->s_last_psn = psn; } /** @@ -845,6 +859,7 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, { struct ipath_ibdev *dev = to_idev(qp->ibqp.device); struct ib_wc wc; + enum ib_wc_status status; struct ipath_swqe *wqe; int ret = 0; u32 ack_psn; @@ -909,7 +924,7 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, */ update_last_psn(qp, wqe->psn - 1); /* Retry this request. */ - ipath_restart_rc(qp, wqe->psn, &wc); + ipath_restart_rc(qp, wqe->psn); /* * No need to process the ACK/NAK since we are * restarting an earlier request. @@ -925,32 +940,23 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD)) { qp->s_num_rd_atomic--; /* Restart sending task if fence is complete */ - if ((qp->s_flags & IPATH_S_FENCE_PENDING) && - !qp->s_num_rd_atomic) { - qp->s_flags &= ~IPATH_S_FENCE_PENDING; - tasklet_hi_schedule(&qp->s_task); - } else if (qp->s_flags & IPATH_S_RDMAR_PENDING) { - qp->s_flags &= ~IPATH_S_RDMAR_PENDING; - tasklet_hi_schedule(&qp->s_task); - } + if (((qp->s_flags & IPATH_S_FENCE_PENDING) && + !qp->s_num_rd_atomic) || + qp->s_flags & IPATH_S_RDMAR_PENDING) + ipath_schedule_send(qp); } /* Post a send completion queue entry if requested. */ if (!(qp->s_flags & IPATH_S_SIGNAL_REQ_WR) || (wqe->wr.send_flags & IB_SEND_SIGNALED)) { + memset(&wc, 0, sizeof wc); wc.wr_id = wqe->wr.wr_id; wc.status = IB_WC_SUCCESS; wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc.vendor_err = 0; wc.byte_len = wqe->length; - wc.imm_data = 0; wc.qp = &qp->ibqp; wc.src_qp = qp->remote_qpn; - wc.wc_flags = 0; - wc.pkey_index = 0; wc.slid = qp->remote_ah_attr.dlid; wc.sl = qp->remote_ah_attr.sl; - wc.dlid_path_bits = 0; - wc.port_num = 0; ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 0); } qp->s_retry = qp->s_retry_cnt; @@ -971,6 +977,8 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, } else { if (++qp->s_last >= qp->s_size) qp->s_last = 0; + if (qp->state == IB_QPS_SQD && qp->s_last == qp->s_cur) + qp->s_draining = 0; if (qp->s_last == qp->s_tail) break; wqe = get_swqe_ptr(qp, qp->s_last); @@ -994,7 +1002,7 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, */ if (ipath_cmp24(qp->s_psn, psn) <= 0) { reset_psn(qp, psn + 1); - tasklet_hi_schedule(&qp->s_task); + ipath_schedule_send(qp); } } else if (ipath_cmp24(qp->s_psn, psn) <= 0) { qp->s_state = OP(SEND_LAST); @@ -1012,7 +1020,7 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, if (qp->s_last == qp->s_tail) goto bail; if (qp->s_rnr_retry == 0) { - wc.status = IB_WC_RNR_RETRY_EXC_ERR; + status = IB_WC_RNR_RETRY_EXC_ERR; goto class_b; } if (qp->s_rnr_retry_cnt < 7) @@ -1033,6 +1041,7 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, ib_ipath_rnr_table[(aeth >> IPATH_AETH_CREDIT_SHIFT) & IPATH_AETH_CREDIT_MASK]; ipath_insert_rnr_queue(qp); + ipath_schedule_send(qp); goto bail; case 3: /* NAK */ @@ -1050,37 +1059,25 @@ static int do_rc_ack(struct ipath_qp *qp, u32 aeth, u32 psn, int opcode, * RDMA READ response which terminates the RDMA * READ. */ - ipath_restart_rc(qp, psn, &wc); + ipath_restart_rc(qp, psn); break; case 1: /* Invalid Request */ - wc.status = IB_WC_REM_INV_REQ_ERR; + status = IB_WC_REM_INV_REQ_ERR; dev->n_other_naks++; goto class_b; case 2: /* Remote Access Error */ - wc.status = IB_WC_REM_ACCESS_ERR; + status = IB_WC_REM_ACCESS_ERR; dev->n_other_naks++; goto class_b; case 3: /* Remote Operation Error */ - wc.status = IB_WC_REM_OP_ERR; + status = IB_WC_REM_OP_ERR; dev->n_other_naks++; class_b: - wc.wr_id = wqe->wr.wr_id; - wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc.vendor_err = 0; - wc.byte_len = 0; - wc.qp = &qp->ibqp; - wc.imm_data = 0; - wc.src_qp = qp->remote_qpn; - wc.wc_flags = 0; - wc.pkey_index = 0; - wc.slid = qp->remote_ah_attr.dlid; - wc.sl = qp->remote_ah_attr.sl; - wc.dlid_path_bits = 0; - wc.port_num = 0; - ipath_sqerror_qp(qp, &wc); + ipath_send_complete(qp, wqe, status); + ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); break; default: @@ -1126,8 +1123,8 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, int header_in_data) { struct ipath_swqe *wqe; + enum ib_wc_status status; unsigned long flags; - struct ib_wc wc; int diff; u32 pad; u32 aeth; @@ -1135,6 +1132,10 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, spin_lock_irqsave(&qp->s_lock, flags); + /* Double check we can process this now that we hold the s_lock. */ + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) + goto ack_done; + /* Ignore invalid responses. */ if (ipath_cmp24(psn, qp->s_next_psn) >= 0) goto ack_done; @@ -1159,6 +1160,7 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, if (unlikely(qp->s_last == qp->s_tail)) goto ack_done; wqe = get_swqe_ptr(qp, qp->s_last); + status = IB_WC_SUCCESS; switch (opcode) { case OP(ACKNOWLEDGE): @@ -1187,6 +1189,7 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, wqe = get_swqe_ptr(qp, qp->s_last); if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ)) goto ack_op_err; + qp->r_flags &= ~IPATH_R_RDMAR_SEQ; /* * If this is a response to a resent RDMA read, we * have to be careful to copy the data to the right @@ -1200,7 +1203,10 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, /* no AETH, no ACK */ if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) { dev->n_rdma_seq++; - ipath_restart_rc(qp, qp->s_last_psn + 1, &wc); + if (qp->r_flags & IPATH_R_RDMAR_SEQ) + goto ack_done; + qp->r_flags |= IPATH_R_RDMAR_SEQ; + ipath_restart_rc(qp, qp->s_last_psn + 1); goto ack_done; } if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ)) @@ -1261,7 +1267,10 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, /* ACKs READ req. */ if (unlikely(ipath_cmp24(psn, qp->s_last_psn + 1))) { dev->n_rdma_seq++; - ipath_restart_rc(qp, qp->s_last_psn + 1, &wc); + if (qp->r_flags & IPATH_R_RDMAR_SEQ) + goto ack_done; + qp->r_flags |= IPATH_R_RDMAR_SEQ; + ipath_restart_rc(qp, qp->s_last_psn + 1); goto ack_done; } if (unlikely(wqe->wr.opcode != IB_WR_RDMA_READ)) @@ -1291,31 +1300,16 @@ static inline void ipath_rc_rcv_resp(struct ipath_ibdev *dev, goto ack_done; } -ack_done: - spin_unlock_irqrestore(&qp->s_lock, flags); - goto bail; - ack_op_err: - wc.status = IB_WC_LOC_QP_OP_ERR; + status = IB_WC_LOC_QP_OP_ERR; goto ack_err; ack_len_err: - wc.status = IB_WC_LOC_LEN_ERR; + status = IB_WC_LOC_LEN_ERR; ack_err: - wc.wr_id = wqe->wr.wr_id; - wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc.vendor_err = 0; - wc.byte_len = 0; - wc.imm_data = 0; - wc.qp = &qp->ibqp; - wc.src_qp = qp->remote_qpn; - wc.wc_flags = 0; - wc.pkey_index = 0; - wc.slid = qp->remote_ah_attr.dlid; - wc.sl = qp->remote_ah_attr.sl; - wc.dlid_path_bits = 0; - wc.port_num = 0; - ipath_sqerror_qp(qp, &wc); + ipath_send_complete(qp, wqe, status); + ipath_error_qp(qp, IB_WC_WR_FLUSH_ERR); +ack_done: spin_unlock_irqrestore(&qp->s_lock, flags); bail: return; @@ -1384,7 +1378,12 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, psn &= IPATH_PSN_MASK; e = NULL; old_req = 1; + spin_lock_irqsave(&qp->s_lock, flags); + /* Double check we can process this now that we hold the s_lock. */ + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) + goto unlock_done; + for (i = qp->r_head_ack_queue; ; i = prev) { if (i == qp->s_tail_ack_queue) old_req = 0; @@ -1512,7 +1511,7 @@ static inline int ipath_rc_rcv_error(struct ipath_ibdev *dev, break; } qp->r_nak_state = 0; - tasklet_hi_schedule(&qp->s_task); + ipath_schedule_send(qp); unlock_done: spin_unlock_irqrestore(&qp->s_lock, flags); @@ -1523,13 +1522,12 @@ send_ack: return 0; } -static void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err) +void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err) { unsigned long flags; int lastwqe; spin_lock_irqsave(&qp->s_lock, flags); - qp->state = IB_QPS_ERR; lastwqe = ipath_error_qp(qp, err); spin_unlock_irqrestore(&qp->s_lock, flags); @@ -1545,18 +1543,15 @@ static void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err) static inline void ipath_update_ack_queue(struct ipath_qp *qp, unsigned n) { - unsigned long flags; unsigned next; next = n + 1; if (next > IPATH_MAX_RDMA_ATOMIC) next = 0; - spin_lock_irqsave(&qp->s_lock, flags); if (n == qp->s_tail_ack_queue) { qp->s_tail_ack_queue = next; qp->s_ack_state = OP(ACKNOWLEDGE); } - spin_unlock_irqrestore(&qp->s_lock, flags); } /** @@ -1585,6 +1580,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, int diff; struct ib_reth *reth; int header_in_data; + unsigned long flags; /* Validate the SLID. See Ch. 9.6.1.5 */ if (unlikely(be16_to_cpu(hdr->lrh[3]) != qp->remote_ah_attr.dlid)) @@ -1643,11 +1639,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, opcode == OP(SEND_LAST) || opcode == OP(SEND_LAST_WITH_IMMEDIATE)) break; - nack_inv: - ipath_rc_error(qp, IB_WC_REM_INV_REQ_ERR); - qp->r_nak_state = IB_NAK_INVALID_REQUEST; - qp->r_ack_psn = qp->r_psn; - goto send_ack; + goto nack_inv; case OP(RDMA_WRITE_FIRST): case OP(RDMA_WRITE_MIDDLE): @@ -1673,18 +1665,13 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, break; } - wc.imm_data = 0; - wc.wc_flags = 0; + memset(&wc, 0, sizeof wc); /* OK, process the packet. */ switch (opcode) { case OP(SEND_FIRST): - if (!ipath_get_rwqe(qp, 0)) { - rnr_nak: - qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer; - qp->r_ack_psn = qp->r_psn; - goto send_ack; - } + if (!ipath_get_rwqe(qp, 0)) + goto rnr_nak; qp->r_rcv_len = 0; /* FALLTHROUGH */ case OP(SEND_MIDDLE): @@ -1741,20 +1728,19 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, goto nack_inv; ipath_copy_sge(&qp->r_sge, data, tlen); qp->r_msn++; - if (!qp->r_wrid_valid) + if (!test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) break; - qp->r_wrid_valid = 0; wc.wr_id = qp->r_wr_id; wc.status = IB_WC_SUCCESS; - wc.opcode = IB_WC_RECV; - wc.vendor_err = 0; + if (opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE) || + opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) + wc.opcode = IB_WC_RECV_RDMA_WITH_IMM; + else + wc.opcode = IB_WC_RECV; wc.qp = &qp->ibqp; wc.src_qp = qp->remote_qpn; - wc.pkey_index = 0; wc.slid = qp->remote_ah_attr.dlid; wc.sl = qp->remote_ah_attr.sl; - wc.dlid_path_bits = 0; - wc.port_num = 0; /* Signal completion event if the solicited bit is set. */ ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, (ohdr->bth[0] & @@ -1815,9 +1801,13 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, next = qp->r_head_ack_queue + 1; if (next > IPATH_MAX_RDMA_ATOMIC) next = 0; + spin_lock_irqsave(&qp->s_lock, flags); + /* Double check we can process this while holding the s_lock. */ + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) + goto unlock; if (unlikely(next == qp->s_tail_ack_queue)) { if (!qp->s_ack_queue[next].sent) - goto nack_inv; + goto nack_inv_unlck; ipath_update_ack_queue(qp, next); } e = &qp->s_ack_queue[qp->r_head_ack_queue]; @@ -1838,7 +1828,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, ok = ipath_rkey_ok(qp, &e->rdma_sge, len, vaddr, rkey, IB_ACCESS_REMOTE_READ); if (unlikely(!ok)) - goto nack_acc; + goto nack_acc_unlck; /* * Update the next expected PSN. We add 1 later * below, so only add the remainder here. @@ -1865,13 +1855,12 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, qp->r_psn++; qp->r_state = opcode; qp->r_nak_state = 0; - barrier(); qp->r_head_ack_queue = next; - /* Call ipath_do_rc_send() in another thread. */ - tasklet_hi_schedule(&qp->s_task); + /* Schedule the send tasklet. */ + ipath_schedule_send(qp); - goto done; + goto unlock; } case OP(COMPARE_SWAP): @@ -1890,9 +1879,13 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, next = qp->r_head_ack_queue + 1; if (next > IPATH_MAX_RDMA_ATOMIC) next = 0; + spin_lock_irqsave(&qp->s_lock, flags); + /* Double check we can process this while holding the s_lock. */ + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) + goto unlock; if (unlikely(next == qp->s_tail_ack_queue)) { if (!qp->s_ack_queue[next].sent) - goto nack_inv; + goto nack_inv_unlck; ipath_update_ack_queue(qp, next); } if (!header_in_data) @@ -1902,13 +1895,13 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, vaddr = ((u64) be32_to_cpu(ateth->vaddr[0]) << 32) | be32_to_cpu(ateth->vaddr[1]); if (unlikely(vaddr & (sizeof(u64) - 1))) - goto nack_inv; + goto nack_inv_unlck; rkey = be32_to_cpu(ateth->rkey); /* Check rkey & NAK */ if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, sizeof(u64), vaddr, rkey, IB_ACCESS_REMOTE_ATOMIC))) - goto nack_acc; + goto nack_acc_unlck; /* Perform atomic OP and save result. */ maddr = (atomic64_t *) qp->r_sge.sge.vaddr; sdata = be64_to_cpu(ateth->swap_data); @@ -1925,13 +1918,12 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, qp->r_psn++; qp->r_state = opcode; qp->r_nak_state = 0; - barrier(); qp->r_head_ack_queue = next; - /* Call ipath_do_rc_send() in another thread. */ - tasklet_hi_schedule(&qp->s_task); + /* Schedule the send tasklet. */ + ipath_schedule_send(qp); - goto done; + goto unlock; } default: @@ -1947,14 +1939,31 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, goto send_ack; goto done; +rnr_nak: + qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer; + qp->r_ack_psn = qp->r_psn; + goto send_ack; + +nack_inv_unlck: + spin_unlock_irqrestore(&qp->s_lock, flags); +nack_inv: + ipath_rc_error(qp, IB_WC_LOC_QP_OP_ERR); + qp->r_nak_state = IB_NAK_INVALID_REQUEST; + qp->r_ack_psn = qp->r_psn; + goto send_ack; + +nack_acc_unlck: + spin_unlock_irqrestore(&qp->s_lock, flags); nack_acc: - ipath_rc_error(qp, IB_WC_REM_ACCESS_ERR); + ipath_rc_error(qp, IB_WC_LOC_PROT_ERR); qp->r_nak_state = IB_NAK_REMOTE_ACCESS_ERROR; qp->r_ack_psn = qp->r_psn; - send_ack: send_rc_ack(qp); + goto done; +unlock: + spin_unlock_irqrestore(&qp->s_lock, flags); done: return; } diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c index 8ac5c1d82cc..a4b5521567f 100644 --- a/drivers/infiniband/hw/ipath/ipath_ruc.c +++ b/drivers/infiniband/hw/ipath/ipath_ruc.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. + * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -78,6 +78,7 @@ const u32 ib_ipath_rnr_table[32] = { * ipath_insert_rnr_queue - put QP on the RNR timeout list for the device * @qp: the QP * + * Called with the QP s_lock held and interrupts disabled. * XXX Use a simple list for now. We might need a priority * queue if we have lots of QPs waiting for RNR timeouts * but that should be rare. @@ -85,9 +86,9 @@ const u32 ib_ipath_rnr_table[32] = { void ipath_insert_rnr_queue(struct ipath_qp *qp) { struct ipath_ibdev *dev = to_idev(qp->ibqp.device); - unsigned long flags; - spin_lock_irqsave(&dev->pending_lock, flags); + /* We already did a spin_lock_irqsave(), so just use spin_lock */ + spin_lock(&dev->pending_lock); if (list_empty(&dev->rnrwait)) list_add(&qp->timerwait, &dev->rnrwait); else { @@ -109,7 +110,7 @@ void ipath_insert_rnr_queue(struct ipath_qp *qp) nqp->s_rnr_timeout -= qp->s_rnr_timeout; list_add(&qp->timerwait, l); } - spin_unlock_irqrestore(&dev->pending_lock, flags); + spin_unlock(&dev->pending_lock); } /** @@ -140,20 +141,11 @@ int ipath_init_sge(struct ipath_qp *qp, struct ipath_rwqe *wqe, goto bail; bad_lkey: + memset(&wc, 0, sizeof(wc)); wc.wr_id = wqe->wr_id; wc.status = IB_WC_LOC_PROT_ERR; wc.opcode = IB_WC_RECV; - wc.vendor_err = 0; - wc.byte_len = 0; - wc.imm_data = 0; wc.qp = &qp->ibqp; - wc.src_qp = 0; - wc.wc_flags = 0; - wc.pkey_index = 0; - wc.slid = 0; - wc.sl = 0; - wc.dlid_path_bits = 0; - wc.port_num = 0; /* Signal solicited completion event. */ ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, 1); ret = 0; @@ -194,6 +186,11 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) } spin_lock_irqsave(&rq->lock, flags); + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { + ret = 0; + goto unlock; + } + wq = rq->wq; tail = wq->tail; /* Validate tail before using it since it is user writable. */ @@ -201,9 +198,8 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) tail = 0; do { if (unlikely(tail == wq->head)) { - spin_unlock_irqrestore(&rq->lock, flags); ret = 0; - goto bail; + goto unlock; } /* Make sure entry is read after head index is read. */ smp_rmb(); @@ -216,7 +212,7 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) wq->tail = tail; ret = 1; - qp->r_wrid_valid = 1; + set_bit(IPATH_R_WRID_VALID, &qp->r_aflags); if (handler) { u32 n; @@ -243,8 +239,8 @@ int ipath_get_rwqe(struct ipath_qp *qp, int wr_id_only) goto bail; } } +unlock: spin_unlock_irqrestore(&rq->lock, flags); - bail: return ret; } @@ -270,38 +266,63 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp) struct ib_wc wc; u64 sdata; atomic64_t *maddr; + enum ib_wc_status send_status; + /* + * Note that we check the responder QP state after + * checking the requester's state. + */ qp = ipath_lookup_qpn(&dev->qp_table, sqp->remote_qpn); - if (!qp) { - dev->n_pkt_drops++; - return; - } -again: spin_lock_irqsave(&sqp->s_lock, flags); - if (!(ib_ipath_state_ops[sqp->state] & IPATH_PROCESS_SEND_OK) || - sqp->s_rnr_timeout) { - spin_unlock_irqrestore(&sqp->s_lock, flags); - goto done; - } + /* Return if we are already busy processing a work request. */ + if ((sqp->s_flags & (IPATH_S_BUSY | IPATH_S_ANY_WAIT)) || + !(ib_ipath_state_ops[sqp->state] & IPATH_PROCESS_OR_FLUSH_SEND)) + goto unlock; - /* Get the next send request. */ - if (sqp->s_last == sqp->s_head) { - /* Send work queue is empty. */ - spin_unlock_irqrestore(&sqp->s_lock, flags); - goto done; + sqp->s_flags |= IPATH_S_BUSY; + +again: + if (sqp->s_last == sqp->s_head) + goto clr_busy; + wqe = get_swqe_ptr(sqp, sqp->s_last); + + /* Return if it is not OK to start a new work reqeust. */ + if (!(ib_ipath_state_ops[sqp->state] & IPATH_PROCESS_NEXT_SEND_OK)) { + if (!(ib_ipath_state_ops[sqp->state] & IPATH_FLUSH_SEND)) + goto clr_busy; + /* We are in the error state, flush the work request. */ + send_status = IB_WC_WR_FLUSH_ERR; + goto flush_send; } /* * We can rely on the entry not changing without the s_lock * being held until we update s_last. + * We increment s_cur to indicate s_last is in progress. */ - wqe = get_swqe_ptr(sqp, sqp->s_last); + if (sqp->s_last == sqp->s_cur) { + if (++sqp->s_cur >= sqp->s_size) + sqp->s_cur = 0; + } spin_unlock_irqrestore(&sqp->s_lock, flags); - wc.wc_flags = 0; - wc.imm_data = 0; + if (!qp || !(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { + dev->n_pkt_drops++; + /* + * For RC, the requester would timeout and retry so + * shortcut the timeouts and just signal too many retries. + */ + if (sqp->ibqp.qp_type == IB_QPT_RC) + send_status = IB_WC_RETRY_EXC_ERR; + else + send_status = IB_WC_SUCCESS; + goto serr; + } + + memset(&wc, 0, sizeof wc); + send_status = IB_WC_SUCCESS; sqp->s_sge.sge = wqe->sg_list[0]; sqp->s_sge.sg_list = wqe->sg_list + 1; @@ -313,75 +334,33 @@ again: wc.imm_data = wqe->wr.ex.imm_data; /* FALLTHROUGH */ case IB_WR_SEND: - if (!ipath_get_rwqe(qp, 0)) { - rnr_nak: - /* Handle RNR NAK */ - if (qp->ibqp.qp_type == IB_QPT_UC) - goto send_comp; - if (sqp->s_rnr_retry == 0) { - wc.status = IB_WC_RNR_RETRY_EXC_ERR; - goto err; - } - if (sqp->s_rnr_retry_cnt < 7) - sqp->s_rnr_retry--; - dev->n_rnr_naks++; - sqp->s_rnr_timeout = - ib_ipath_rnr_table[qp->r_min_rnr_timer]; - ipath_insert_rnr_queue(sqp); - goto done; - } + if (!ipath_get_rwqe(qp, 0)) + goto rnr_nak; break; case IB_WR_RDMA_WRITE_WITH_IMM: - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_WRITE))) { - wc.status = IB_WC_REM_INV_REQ_ERR; - goto err; - } + if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE))) + goto inv_err; wc.wc_flags = IB_WC_WITH_IMM; wc.imm_data = wqe->wr.ex.imm_data; if (!ipath_get_rwqe(qp, 1)) goto rnr_nak; /* FALLTHROUGH */ case IB_WR_RDMA_WRITE: - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_WRITE))) { - wc.status = IB_WC_REM_INV_REQ_ERR; - goto err; - } + if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE))) + goto inv_err; if (wqe->length == 0) break; if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, wqe->length, wqe->wr.wr.rdma.remote_addr, wqe->wr.wr.rdma.rkey, - IB_ACCESS_REMOTE_WRITE))) { - acc_err: - wc.status = IB_WC_REM_ACCESS_ERR; - err: - wc.wr_id = wqe->wr.wr_id; - wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc.vendor_err = 0; - wc.byte_len = 0; - wc.qp = &sqp->ibqp; - wc.src_qp = sqp->remote_qpn; - wc.pkey_index = 0; - wc.slid = sqp->remote_ah_attr.dlid; - wc.sl = sqp->remote_ah_attr.sl; - wc.dlid_path_bits = 0; - wc.port_num = 0; - spin_lock_irqsave(&sqp->s_lock, flags); - ipath_sqerror_qp(sqp, &wc); - spin_unlock_irqrestore(&sqp->s_lock, flags); - goto done; - } + IB_ACCESS_REMOTE_WRITE))) + goto acc_err; break; case IB_WR_RDMA_READ: - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_READ))) { - wc.status = IB_WC_REM_INV_REQ_ERR; - goto err; - } + if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_READ))) + goto inv_err; if (unlikely(!ipath_rkey_ok(qp, &sqp->s_sge, wqe->length, wqe->wr.wr.rdma.remote_addr, wqe->wr.wr.rdma.rkey, @@ -394,11 +373,8 @@ again: case IB_WR_ATOMIC_CMP_AND_SWP: case IB_WR_ATOMIC_FETCH_AND_ADD: - if (unlikely(!(qp->qp_access_flags & - IB_ACCESS_REMOTE_ATOMIC))) { - wc.status = IB_WC_REM_INV_REQ_ERR; - goto err; - } + if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC))) + goto inv_err; if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, sizeof(u64), wqe->wr.wr.atomic.remote_addr, wqe->wr.wr.atomic.rkey, @@ -415,7 +391,8 @@ again: goto send_comp; default: - goto done; + send_status = IB_WC_LOC_QP_OP_ERR; + goto serr; } sge = &sqp->s_sge.sge; @@ -448,8 +425,7 @@ again: sqp->s_len -= len; } - if (wqe->wr.opcode == IB_WR_RDMA_WRITE || - wqe->wr.opcode == IB_WR_RDMA_READ) + if (!test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) goto send_comp; if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM) @@ -458,32 +434,89 @@ again: wc.opcode = IB_WC_RECV; wc.wr_id = qp->r_wr_id; wc.status = IB_WC_SUCCESS; - wc.vendor_err = 0; wc.byte_len = wqe->length; wc.qp = &qp->ibqp; wc.src_qp = qp->remote_qpn; - wc.pkey_index = 0; wc.slid = qp->remote_ah_attr.dlid; wc.sl = qp->remote_ah_attr.sl; - wc.dlid_path_bits = 0; wc.port_num = 1; /* Signal completion event if the solicited bit is set. */ ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, wqe->wr.send_flags & IB_SEND_SOLICITED); send_comp: + spin_lock_irqsave(&sqp->s_lock, flags); +flush_send: sqp->s_rnr_retry = sqp->s_rnr_retry_cnt; - ipath_send_complete(sqp, wqe, IB_WC_SUCCESS); + ipath_send_complete(sqp, wqe, send_status); goto again; +rnr_nak: + /* Handle RNR NAK */ + if (qp->ibqp.qp_type == IB_QPT_UC) + goto send_comp; + /* + * Note: we don't need the s_lock held since the BUSY flag + * makes this single threaded. + */ + if (sqp->s_rnr_retry == 0) { + send_status = IB_WC_RNR_RETRY_EXC_ERR; + goto serr; + } + if (sqp->s_rnr_retry_cnt < 7) + sqp->s_rnr_retry--; + spin_lock_irqsave(&sqp->s_lock, flags); + if (!(ib_ipath_state_ops[sqp->state] & IPATH_PROCESS_RECV_OK)) + goto clr_busy; + sqp->s_flags |= IPATH_S_WAITING; + dev->n_rnr_naks++; + sqp->s_rnr_timeout = ib_ipath_rnr_table[qp->r_min_rnr_timer]; + ipath_insert_rnr_queue(sqp); + goto clr_busy; + +inv_err: + send_status = IB_WC_REM_INV_REQ_ERR; + wc.status = IB_WC_LOC_QP_OP_ERR; + goto err; + +acc_err: + send_status = IB_WC_REM_ACCESS_ERR; + wc.status = IB_WC_LOC_PROT_ERR; +err: + /* responder goes to error state */ + ipath_rc_error(qp, wc.status); + +serr: + spin_lock_irqsave(&sqp->s_lock, flags); + ipath_send_complete(sqp, wqe, send_status); + if (sqp->ibqp.qp_type == IB_QPT_RC) { + int lastwqe = ipath_error_qp(sqp, IB_WC_WR_FLUSH_ERR); + + sqp->s_flags &= ~IPATH_S_BUSY; + spin_unlock_irqrestore(&sqp->s_lock, flags); + if (lastwqe) { + struct ib_event ev; + + ev.device = sqp->ibqp.device; + ev.element.qp = &sqp->ibqp; + ev.event = IB_EVENT_QP_LAST_WQE_REACHED; + sqp->ibqp.event_handler(&ev, sqp->ibqp.qp_context); + } + goto done; + } +clr_busy: + sqp->s_flags &= ~IPATH_S_BUSY; +unlock: + spin_unlock_irqrestore(&sqp->s_lock, flags); done: - if (atomic_dec_and_test(&qp->refcount)) + if (qp && atomic_dec_and_test(&qp->refcount)) wake_up(&qp->wait); } -static void want_buffer(struct ipath_devdata *dd) +static void want_buffer(struct ipath_devdata *dd, struct ipath_qp *qp) { - if (!(dd->ipath_flags & IPATH_HAS_SEND_DMA)) { + if (!(dd->ipath_flags & IPATH_HAS_SEND_DMA) || + qp->ibqp.qp_type == IB_QPT_SMI) { unsigned long flags; spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); @@ -501,26 +534,36 @@ static void want_buffer(struct ipath_devdata *dd) * @dev: the device we ran out of buffers on * * Called when we run out of PIO buffers. + * If we are now in the error state, return zero to flush the + * send work request. */ -static void ipath_no_bufs_available(struct ipath_qp *qp, +static int ipath_no_bufs_available(struct ipath_qp *qp, struct ipath_ibdev *dev) { unsigned long flags; + int ret = 1; /* * Note that as soon as want_buffer() is called and * possibly before it returns, ipath_ib_piobufavail() - * could be called. If we are still in the tasklet function, - * tasklet_hi_schedule() will not call us until the next time - * tasklet_hi_schedule() is called. - * We leave the busy flag set so that another post send doesn't - * try to put the same QP on the piowait list again. + * could be called. Therefore, put QP on the piowait list before + * enabling the PIO avail interrupt. */ - spin_lock_irqsave(&dev->pending_lock, flags); - list_add_tail(&qp->piowait, &dev->piowait); - spin_unlock_irqrestore(&dev->pending_lock, flags); - want_buffer(dev->dd); - dev->n_piowait++; + spin_lock_irqsave(&qp->s_lock, flags); + if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) { + dev->n_piowait++; + qp->s_flags |= IPATH_S_WAITING; + qp->s_flags &= ~IPATH_S_BUSY; + spin_lock(&dev->pending_lock); + if (list_empty(&qp->piowait)) + list_add_tail(&qp->piowait, &dev->piowait); + spin_unlock(&dev->pending_lock); + } else + ret = 0; + spin_unlock_irqrestore(&qp->s_lock, flags); + if (ret) + want_buffer(dev->dd, qp); + return ret; } /** @@ -596,15 +639,13 @@ void ipath_do_send(unsigned long data) struct ipath_qp *qp = (struct ipath_qp *)data; struct ipath_ibdev *dev = to_idev(qp->ibqp.device); int (*make_req)(struct ipath_qp *qp); - - if (test_and_set_bit(IPATH_S_BUSY, &qp->s_busy)) - goto bail; + unsigned long flags; if ((qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) && qp->remote_ah_attr.dlid == dev->dd->ipath_lid) { ipath_ruc_loopback(qp); - goto clear; + goto bail; } if (qp->ibqp.qp_type == IB_QPT_RC) @@ -614,6 +655,19 @@ void ipath_do_send(unsigned long data) else make_req = ipath_make_ud_req; + spin_lock_irqsave(&qp->s_lock, flags); + + /* Return if we are already busy processing a work request. */ + if ((qp->s_flags & (IPATH_S_BUSY | IPATH_S_ANY_WAIT)) || + !(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_OR_FLUSH_SEND)) { + spin_unlock_irqrestore(&qp->s_lock, flags); + goto bail; + } + + qp->s_flags |= IPATH_S_BUSY; + + spin_unlock_irqrestore(&qp->s_lock, flags); + again: /* Check for a constructed packet to be sent. */ if (qp->s_hdrwords != 0) { @@ -623,8 +677,8 @@ again: */ if (ipath_verbs_send(qp, &qp->s_hdr, qp->s_hdrwords, qp->s_cur_sge, qp->s_cur_size)) { - ipath_no_bufs_available(qp, dev); - goto bail; + if (ipath_no_bufs_available(qp, dev)) + goto bail; } dev->n_unicast_xmit++; /* Record that we sent the packet and s_hdr is empty. */ @@ -633,16 +687,20 @@ again: if (make_req(qp)) goto again; -clear: - clear_bit(IPATH_S_BUSY, &qp->s_busy); + bail:; } +/* + * This should be called with s_lock held. + */ void ipath_send_complete(struct ipath_qp *qp, struct ipath_swqe *wqe, enum ib_wc_status status) { - unsigned long flags; - u32 last; + u32 old_last, last; + + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_OR_FLUSH_SEND)) + return; /* See ch. 11.2.4.1 and 10.7.3.1 */ if (!(qp->s_flags & IPATH_S_SIGNAL_REQ_WR) || @@ -650,27 +708,25 @@ void ipath_send_complete(struct ipath_qp *qp, struct ipath_swqe *wqe, status != IB_WC_SUCCESS) { struct ib_wc wc; + memset(&wc, 0, sizeof wc); wc.wr_id = wqe->wr.wr_id; wc.status = status; wc.opcode = ib_ipath_wc_opcode[wqe->wr.opcode]; - wc.vendor_err = 0; - wc.byte_len = wqe->length; - wc.imm_data = 0; wc.qp = &qp->ibqp; - wc.src_qp = 0; - wc.wc_flags = 0; - wc.pkey_index = 0; - wc.slid = 0; - wc.sl = 0; - wc.dlid_path_bits = 0; - wc.port_num = 0; - ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 0); + if (status == IB_WC_SUCCESS) + wc.byte_len = wqe->length; + ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, + status != IB_WC_SUCCESS); } - spin_lock_irqsave(&qp->s_lock, flags); - last = qp->s_last; + old_last = last = qp->s_last; if (++last >= qp->s_size) last = 0; qp->s_last = last; - spin_unlock_irqrestore(&qp->s_lock, flags); + if (qp->s_cur == old_last) + qp->s_cur = last; + if (qp->s_tail == old_last) + qp->s_tail = last; + if (qp->state == IB_QPS_SQD && last == qp->s_cur) + qp->s_draining = 0; } diff --git a/drivers/infiniband/hw/ipath/ipath_sdma.c b/drivers/infiniband/hw/ipath/ipath_sdma.c index 1974df7a9f7..eaba03273e4 100644 --- a/drivers/infiniband/hw/ipath/ipath_sdma.c +++ b/drivers/infiniband/hw/ipath/ipath_sdma.c @@ -263,14 +263,10 @@ static void sdma_abort_task(unsigned long opaque) hwstatus = ipath_read_kreg64(dd, dd->ipath_kregs->kr_senddmastatus); - if (/* ScoreBoardDrainInProg */ - test_bit(63, &hwstatus) || - /* AbortInProg */ - test_bit(62, &hwstatus) || - /* InternalSDmaEnable */ - test_bit(61, &hwstatus) || - /* ScbEmpty */ - !test_bit(30, &hwstatus)) { + if ((hwstatus & (IPATH_SDMA_STATUS_SCORE_BOARD_DRAIN_IN_PROG | + IPATH_SDMA_STATUS_ABORT_IN_PROG | + IPATH_SDMA_STATUS_INTERNAL_SDMA_ENABLE)) || + !(hwstatus & IPATH_SDMA_STATUS_SCB_EMPTY)) { if (dd->ipath_sdma_reset_wait > 0) { /* not done shutting down sdma */ --dd->ipath_sdma_reset_wait; @@ -308,13 +304,15 @@ static void sdma_abort_task(unsigned long opaque) spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); /* - * Don't restart sdma here. Wait until link is up to ACTIVE. - * VL15 MADs used to bring the link up use PIO, and multiple - * link transitions otherwise cause the sdma engine to be + * Don't restart sdma here (with the exception + * below). Wait until link is up to ACTIVE. VL15 MADs + * used to bring the link up use PIO, and multiple link + * transitions otherwise cause the sdma engine to be * stopped and started multiple times. - * The disable is done here, including the shadow, so the - * state is kept consistent. - * See ipath_restart_sdma() for the actual starting of sdma. + * The disable is done here, including the shadow, + * so the state is kept consistent. + * See ipath_restart_sdma() for the actual starting + * of sdma. */ spin_lock_irqsave(&dd->ipath_sendctrl_lock, flags); dd->ipath_sendctrl &= ~INFINIPATH_S_SDMAENABLE; @@ -326,6 +324,13 @@ static void sdma_abort_task(unsigned long opaque) /* make sure I see next message */ dd->ipath_sdma_abort_jiffies = 0; + /* + * Not everything that takes SDMA offline is a link + * status change. If the link was up, restart SDMA. + */ + if (dd->ipath_flags & IPATH_LINKACTIVE) + ipath_restart_sdma(dd); + goto done; } @@ -336,7 +341,7 @@ resched: * state change */ if (jiffies > dd->ipath_sdma_abort_jiffies) { - ipath_dbg("looping with status 0x%016llx\n", + ipath_dbg("looping with status 0x%08lx\n", dd->ipath_sdma_status); dd->ipath_sdma_abort_jiffies = jiffies + 5 * HZ; } @@ -427,7 +432,12 @@ int setup_sdma(struct ipath_devdata *dd) goto done; } - dd->ipath_sdma_status = 0; + /* + * Set initial status as if we had been up, then gone down. + * This lets initial start on transition to ACTIVE be the + * same as restart after link flap. + */ + dd->ipath_sdma_status = IPATH_SDMA_ABORT_ABORTED; dd->ipath_sdma_abort_jiffies = 0; dd->ipath_sdma_generation = 0; dd->ipath_sdma_descq_tail = 0; @@ -449,16 +459,19 @@ int setup_sdma(struct ipath_devdata *dd) ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmaheadaddr, dd->ipath_sdma_head_phys); - /* Reserve all the former "kernel" piobufs */ - n = dd->ipath_piobcnt2k + dd->ipath_piobcnt4k - dd->ipath_pioreserved; - for (i = dd->ipath_lastport_piobuf; i < n; ++i) { + /* + * Reserve all the former "kernel" piobufs, using high number range + * so we get as many 4K buffers as possible + */ + n = dd->ipath_piobcnt2k + dd->ipath_piobcnt4k; + i = dd->ipath_lastport_piobuf + dd->ipath_pioreserved; + ipath_chg_pioavailkernel(dd, i, n - i , 0); + for (; i < n; ++i) { unsigned word = i / 64; unsigned bit = i & 63; BUG_ON(word >= 3); senddmabufmask[word] |= 1ULL << bit; } - ipath_chg_pioavailkernel(dd, dd->ipath_lastport_piobuf, - n - dd->ipath_lastport_piobuf, 0); ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask0, senddmabufmask[0]); ipath_write_kreg(dd, dd->ipath_kregs->kr_senddmabufmask1, @@ -598,7 +611,7 @@ void ipath_restart_sdma(struct ipath_devdata *dd) } spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); if (!needed) { - ipath_dbg("invalid attempt to restart SDMA, status 0x%016llx\n", + ipath_dbg("invalid attempt to restart SDMA, status 0x%08lx\n", dd->ipath_sdma_status); goto bail; } @@ -615,6 +628,9 @@ void ipath_restart_sdma(struct ipath_devdata *dd) ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); spin_unlock_irqrestore(&dd->ipath_sendctrl_lock, flags); + /* notify upper layers */ + ipath_ib_piobufavail(dd->verbs_dev); + bail: return; } diff --git a/drivers/infiniband/hw/ipath/ipath_uc.c b/drivers/infiniband/hw/ipath/ipath_uc.c index bfe8926b551..0596ec16fcb 100644 --- a/drivers/infiniband/hw/ipath/ipath_uc.c +++ b/drivers/infiniband/hw/ipath/ipath_uc.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved. + * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * * This software is available to you under a choice of one of two @@ -47,14 +47,30 @@ int ipath_make_uc_req(struct ipath_qp *qp) { struct ipath_other_headers *ohdr; struct ipath_swqe *wqe; + unsigned long flags; u32 hwords; u32 bth0; u32 len; u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu); int ret = 0; - if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) + spin_lock_irqsave(&qp->s_lock, flags); + + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) { + if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND)) + goto bail; + /* We are in the error state, flush the work request. */ + if (qp->s_last == qp->s_head) + goto bail; + /* If DMAs are in progress, we can't flush immediately. */ + if (atomic_read(&qp->s_dma_busy)) { + qp->s_flags |= IPATH_S_WAIT_DMA; + goto bail; + } + wqe = get_swqe_ptr(qp, qp->s_last); + ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); goto done; + } ohdr = &qp->s_hdr.u.oth; if (qp->remote_ah_attr.ah_flags & IB_AH_GRH) @@ -69,9 +85,12 @@ int ipath_make_uc_req(struct ipath_qp *qp) qp->s_wqe = NULL; switch (qp->s_state) { default: + if (!(ib_ipath_state_ops[qp->state] & + IPATH_PROCESS_NEXT_SEND_OK)) + goto bail; /* Check if send work queue is empty. */ if (qp->s_cur == qp->s_head) - goto done; + goto bail; /* * Start a new request. */ @@ -134,7 +153,7 @@ int ipath_make_uc_req(struct ipath_qp *qp) break; default: - goto done; + goto bail; } break; @@ -194,9 +213,14 @@ int ipath_make_uc_req(struct ipath_qp *qp) ipath_make_ruc_header(to_idev(qp->ibqp.device), qp, ohdr, bth0 | (qp->s_state << 24), qp->s_next_psn++ & IPATH_PSN_MASK); +done: ret = 1; + goto unlock; -done: +bail: + qp->s_flags &= ~IPATH_S_BUSY; +unlock: + spin_unlock_irqrestore(&qp->s_lock, flags); return ret; } @@ -258,8 +282,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, */ opcode = be32_to_cpu(ohdr->bth[0]) >> 24; - wc.imm_data = 0; - wc.wc_flags = 0; + memset(&wc, 0, sizeof wc); /* Compare the PSN verses the expected PSN. */ if (unlikely(ipath_cmp24(psn, qp->r_psn) != 0)) { @@ -322,8 +345,8 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, case OP(SEND_ONLY): case OP(SEND_ONLY_WITH_IMMEDIATE): send_first: - if (qp->r_reuse_sge) { - qp->r_reuse_sge = 0; + if (qp->r_flags & IPATH_R_REUSE_SGE) { + qp->r_flags &= ~IPATH_R_REUSE_SGE; qp->r_sge = qp->s_rdma_read_sge; } else if (!ipath_get_rwqe(qp, 0)) { dev->n_pkt_drops++; @@ -340,13 +363,13 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, case OP(SEND_MIDDLE): /* Check for invalid length PMTU or posted rwqe len. */ if (unlikely(tlen != (hdrsize + pmtu + 4))) { - qp->r_reuse_sge = 1; + qp->r_flags |= IPATH_R_REUSE_SGE; dev->n_pkt_drops++; goto done; } qp->r_rcv_len += pmtu; if (unlikely(qp->r_rcv_len > qp->r_len)) { - qp->r_reuse_sge = 1; + qp->r_flags |= IPATH_R_REUSE_SGE; dev->n_pkt_drops++; goto done; } @@ -372,7 +395,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, /* Check for invalid length. */ /* XXX LAST len should be >= 1 */ if (unlikely(tlen < (hdrsize + pad + 4))) { - qp->r_reuse_sge = 1; + qp->r_flags |= IPATH_R_REUSE_SGE; dev->n_pkt_drops++; goto done; } @@ -380,24 +403,19 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, tlen -= (hdrsize + pad + 4); wc.byte_len = tlen + qp->r_rcv_len; if (unlikely(wc.byte_len > qp->r_len)) { - qp->r_reuse_sge = 1; + qp->r_flags |= IPATH_R_REUSE_SGE; dev->n_pkt_drops++; goto done; } - /* XXX Need to free SGEs */ + wc.opcode = IB_WC_RECV; last_imm: ipath_copy_sge(&qp->r_sge, data, tlen); wc.wr_id = qp->r_wr_id; wc.status = IB_WC_SUCCESS; - wc.opcode = IB_WC_RECV; - wc.vendor_err = 0; wc.qp = &qp->ibqp; wc.src_qp = qp->remote_qpn; - wc.pkey_index = 0; wc.slid = qp->remote_ah_attr.dlid; wc.sl = qp->remote_ah_attr.sl; - wc.dlid_path_bits = 0; - wc.port_num = 0; /* Signal completion event if the solicited bit is set. */ ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, (ohdr->bth[0] & @@ -488,13 +506,14 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, dev->n_pkt_drops++; goto done; } - if (qp->r_reuse_sge) - qp->r_reuse_sge = 0; + if (qp->r_flags & IPATH_R_REUSE_SGE) + qp->r_flags &= ~IPATH_R_REUSE_SGE; else if (!ipath_get_rwqe(qp, 1)) { dev->n_pkt_drops++; goto done; } wc.byte_len = qp->r_len; + wc.opcode = IB_WC_RECV_RDMA_WITH_IMM; goto last_imm; case OP(RDMA_WRITE_LAST): diff --git a/drivers/infiniband/hw/ipath/ipath_ud.c b/drivers/infiniband/hw/ipath/ipath_ud.c index 8b6a261c89e..77ca8ca74e7 100644 --- a/drivers/infiniband/hw/ipath/ipath_ud.c +++ b/drivers/infiniband/hw/ipath/ipath_ud.c @@ -65,9 +65,9 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, struct ipath_swqe *swqe) u32 length; qp = ipath_lookup_qpn(&dev->qp_table, swqe->wr.wr.ud.remote_qpn); - if (!qp) { + if (!qp || !(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_RECV_OK)) { dev->n_pkt_drops++; - goto send_comp; + goto done; } rsge.sg_list = NULL; @@ -91,14 +91,12 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, struct ipath_swqe *swqe) * present on the wire. */ length = swqe->length; + memset(&wc, 0, sizeof wc); wc.byte_len = length + sizeof(struct ib_grh); if (swqe->wr.opcode == IB_WR_SEND_WITH_IMM) { wc.wc_flags = IB_WC_WITH_IMM; wc.imm_data = swqe->wr.ex.imm_data; - } else { - wc.wc_flags = 0; - wc.imm_data = 0; } /* @@ -229,7 +227,6 @@ static void ipath_ud_loopback(struct ipath_qp *sqp, struct ipath_swqe *swqe) } wc.status = IB_WC_SUCCESS; wc.opcode = IB_WC_RECV; - wc.vendor_err = 0; wc.qp = &qp->ibqp; wc.src_qp = sqp->ibqp.qp_num; /* XXX do we know which pkey matched? Only needed for GSI. */ @@ -248,8 +245,7 @@ drop: kfree(rsge.sg_list); if (atomic_dec_and_test(&qp->refcount)) wake_up(&qp->wait); -send_comp: - ipath_send_complete(sqp, swqe, IB_WC_SUCCESS); +done:; } /** @@ -264,6 +260,7 @@ int ipath_make_ud_req(struct ipath_qp *qp) struct ipath_other_headers *ohdr; struct ib_ah_attr *ah_attr; struct ipath_swqe *wqe; + unsigned long flags; u32 nwords; u32 extra_bytes; u32 bth0; @@ -271,13 +268,30 @@ int ipath_make_ud_req(struct ipath_qp *qp) u16 lid; int ret = 0; - if (unlikely(!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK))) - goto bail; + spin_lock_irqsave(&qp->s_lock, flags); + + if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_NEXT_SEND_OK)) { + if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND)) + goto bail; + /* We are in the error state, flush the work request. */ + if (qp->s_last == qp->s_head) + goto bail; + /* If DMAs are in progress, we can't flush immediately. */ + if (atomic_read(&qp->s_dma_busy)) { + qp->s_flags |= IPATH_S_WAIT_DMA; + goto bail; + } + wqe = get_swqe_ptr(qp, qp->s_last); + ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR); + goto done; + } if (qp->s_cur == qp->s_head) goto bail; wqe = get_swqe_ptr(qp, qp->s_cur); + if (++qp->s_cur >= qp->s_size) + qp->s_cur = 0; /* Construct the header. */ ah_attr = &to_iah(wqe->wr.wr.ud.ah)->attr; @@ -288,10 +302,23 @@ int ipath_make_ud_req(struct ipath_qp *qp) dev->n_unicast_xmit++; } else { dev->n_unicast_xmit++; - lid = ah_attr->dlid & - ~((1 << dev->dd->ipath_lmc) - 1); + lid = ah_attr->dlid & ~((1 << dev->dd->ipath_lmc) - 1); if (unlikely(lid == dev->dd->ipath_lid)) { + /* + * If DMAs are in progress, we can't generate + * a completion for the loopback packet since + * it would be out of order. + * XXX Instead of waiting, we could queue a + * zero length descriptor so we get a callback. + */ + if (atomic_read(&qp->s_dma_busy)) { + qp->s_flags |= IPATH_S_WAIT_DMA; + goto bail; + } + spin_unlock_irqrestore(&qp->s_lock, flags); ipath_ud_loopback(qp, wqe); + spin_lock_irqsave(&qp->s_lock, flags); + ipath_send_complete(qp, wqe, IB_WC_SUCCESS); goto done; } } @@ -368,11 +395,13 @@ int ipath_make_ud_req(struct ipath_qp *qp) ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num); done: - if (++qp->s_cur >= qp->s_size) - qp->s_cur = 0; ret = 1; + goto unlock; bail: + qp->s_flags &= ~IPATH_S_BUSY; +unlock: + spin_unlock_irqrestore(&qp->s_lock, flags); return ret; } @@ -506,8 +535,8 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, /* * Get the next work request entry to find where to put the data. */ - if (qp->r_reuse_sge) - qp->r_reuse_sge = 0; + if (qp->r_flags & IPATH_R_REUSE_SGE) + qp->r_flags &= ~IPATH_R_REUSE_SGE; else if (!ipath_get_rwqe(qp, 0)) { /* * Count VL15 packets dropped due to no receive buffer. @@ -523,7 +552,7 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, } /* Silently drop packets which are too big. */ if (wc.byte_len > qp->r_len) { - qp->r_reuse_sge = 1; + qp->r_flags |= IPATH_R_REUSE_SGE; dev->n_pkt_drops++; goto bail; } @@ -535,7 +564,8 @@ void ipath_ud_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, ipath_skip_sge(&qp->r_sge, sizeof(struct ib_grh)); ipath_copy_sge(&qp->r_sge, data, wc.byte_len - sizeof(struct ib_grh)); - qp->r_wrid_valid = 0; + if (!test_and_clear_bit(IPATH_R_WRID_VALID, &qp->r_aflags)) + goto bail; wc.wr_id = qp->r_wr_id; wc.status = IB_WC_SUCCESS; wc.opcode = IB_WC_RECV; diff --git a/drivers/infiniband/hw/ipath/ipath_user_sdma.h b/drivers/infiniband/hw/ipath/ipath_user_sdma.h index e70946c1428..fc76316c4a5 100644 --- a/drivers/infiniband/hw/ipath/ipath_user_sdma.h +++ b/drivers/infiniband/hw/ipath/ipath_user_sdma.h @@ -45,8 +45,6 @@ int ipath_user_sdma_writev(struct ipath_devdata *dd, int ipath_user_sdma_make_progress(struct ipath_devdata *dd, struct ipath_user_sdma_queue *pq); -int ipath_user_sdma_pkt_sent(const struct ipath_user_sdma_queue *pq, - u32 counter); void ipath_user_sdma_queue_drain(struct ipath_devdata *dd, struct ipath_user_sdma_queue *pq); diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index e63927cce5b..7779165b2c2 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -111,16 +111,24 @@ static unsigned int ib_ipath_disable_sma; module_param_named(disable_sma, ib_ipath_disable_sma, uint, S_IWUSR | S_IRUGO); MODULE_PARM_DESC(disable_sma, "Disable the SMA"); +/* + * Note that it is OK to post send work requests in the SQE and ERR + * states; ipath_do_send() will process them and generate error + * completions as per IB 1.2 C10-96. + */ const int ib_ipath_state_ops[IB_QPS_ERR + 1] = { [IB_QPS_RESET] = 0, [IB_QPS_INIT] = IPATH_POST_RECV_OK, [IB_QPS_RTR] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK, [IB_QPS_RTS] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | - IPATH_POST_SEND_OK | IPATH_PROCESS_SEND_OK, + IPATH_POST_SEND_OK | IPATH_PROCESS_SEND_OK | + IPATH_PROCESS_NEXT_SEND_OK, [IB_QPS_SQD] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | - IPATH_POST_SEND_OK, - [IB_QPS_SQE] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK, - [IB_QPS_ERR] = 0, + IPATH_POST_SEND_OK | IPATH_PROCESS_SEND_OK, + [IB_QPS_SQE] = IPATH_POST_RECV_OK | IPATH_PROCESS_RECV_OK | + IPATH_POST_SEND_OK | IPATH_FLUSH_SEND, + [IB_QPS_ERR] = IPATH_POST_RECV_OK | IPATH_FLUSH_RECV | + IPATH_POST_SEND_OK | IPATH_FLUSH_SEND, }; struct ipath_ucontext { @@ -230,18 +238,6 @@ void ipath_skip_sge(struct ipath_sge_state *ss, u32 length) } } -static void ipath_flush_wqe(struct ipath_qp *qp, struct ib_send_wr *wr) -{ - struct ib_wc wc; - - memset(&wc, 0, sizeof(wc)); - wc.wr_id = wr->wr_id; - wc.status = IB_WC_WR_FLUSH_ERR; - wc.opcode = ib_ipath_wc_opcode[wr->opcode]; - wc.qp = &qp->ibqp; - ipath_cq_enter(to_icq(qp->ibqp.send_cq), &wc, 1); -} - /* * Count the number of DMA descriptors needed to send length bytes of data. * Don't modify the ipath_sge_state to get the count. @@ -347,14 +343,8 @@ static int ipath_post_one_send(struct ipath_qp *qp, struct ib_send_wr *wr) spin_lock_irqsave(&qp->s_lock, flags); /* Check that state is OK to post send. */ - if (unlikely(!(ib_ipath_state_ops[qp->state] & IPATH_POST_SEND_OK))) { - if (qp->state != IB_QPS_SQE && qp->state != IB_QPS_ERR) - goto bail_inval; - /* C10-96 says generate a flushed completion entry. */ - ipath_flush_wqe(qp, wr); - ret = 0; - goto bail; - } + if (unlikely(!(ib_ipath_state_ops[qp->state] & IPATH_POST_SEND_OK))) + goto bail_inval; /* IB spec says that num_sge == 0 is OK. */ if (wr->num_sge > qp->s_max_sge) @@ -396,7 +386,6 @@ static int ipath_post_one_send(struct ipath_qp *qp, struct ib_send_wr *wr) wqe = get_swqe_ptr(qp, qp->s_head); wqe->wr = *wr; - wqe->ssn = qp->s_ssn++; wqe->length = 0; if (wr->num_sge) { acc = wr->opcode >= IB_WR_RDMA_READ ? @@ -422,6 +411,7 @@ static int ipath_post_one_send(struct ipath_qp *qp, struct ib_send_wr *wr) goto bail_inval; } else if (wqe->length > to_idev(qp->ibqp.device)->dd->ipath_ibmtu) goto bail_inval; + wqe->ssn = qp->s_ssn++; qp->s_head = next; ret = 0; @@ -677,6 +667,7 @@ bail:; static void ipath_ib_timer(struct ipath_ibdev *dev) { struct ipath_qp *resend = NULL; + struct ipath_qp *rnr = NULL; struct list_head *last; struct ipath_qp *qp; unsigned long flags; @@ -703,7 +694,9 @@ static void ipath_ib_timer(struct ipath_ibdev *dev) if (--qp->s_rnr_timeout == 0) { do { list_del_init(&qp->timerwait); - tasklet_hi_schedule(&qp->s_task); + qp->timer_next = rnr; + rnr = qp; + atomic_inc(&qp->refcount); if (list_empty(last)) break; qp = list_entry(last->next, struct ipath_qp, @@ -743,13 +736,15 @@ static void ipath_ib_timer(struct ipath_ibdev *dev) spin_unlock_irqrestore(&dev->pending_lock, flags); /* XXX What if timer fires again while this is running? */ - for (qp = resend; qp != NULL; qp = qp->timer_next) { - struct ib_wc wc; + while (resend != NULL) { + qp = resend; + resend = qp->timer_next; spin_lock_irqsave(&qp->s_lock, flags); - if (qp->s_last != qp->s_tail && qp->state == IB_QPS_RTS) { + if (qp->s_last != qp->s_tail && + ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) { dev->n_timeouts++; - ipath_restart_rc(qp, qp->s_last_psn + 1, &wc); + ipath_restart_rc(qp, qp->s_last_psn + 1); } spin_unlock_irqrestore(&qp->s_lock, flags); @@ -757,6 +752,19 @@ static void ipath_ib_timer(struct ipath_ibdev *dev) if (atomic_dec_and_test(&qp->refcount)) wake_up(&qp->wait); } + while (rnr != NULL) { + qp = rnr; + rnr = qp->timer_next; + + spin_lock_irqsave(&qp->s_lock, flags); + if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) + ipath_schedule_send(qp); + spin_unlock_irqrestore(&qp->s_lock, flags); + + /* Notify ipath_destroy_qp() if it is waiting. */ + if (atomic_dec_and_test(&qp->refcount)) + wake_up(&qp->wait); + } } static void update_sge(struct ipath_sge_state *ss, u32 length) @@ -1012,13 +1020,24 @@ static void sdma_complete(void *cookie, int status) struct ipath_verbs_txreq *tx = cookie; struct ipath_qp *qp = tx->qp; struct ipath_ibdev *dev = to_idev(qp->ibqp.device); + unsigned int flags; + enum ib_wc_status ibs = status == IPATH_SDMA_TXREQ_S_OK ? + IB_WC_SUCCESS : IB_WC_WR_FLUSH_ERR; - /* Generate a completion queue entry if needed */ - if (qp->ibqp.qp_type != IB_QPT_RC && tx->wqe) { - enum ib_wc_status ibs = status == IPATH_SDMA_TXREQ_S_OK ? - IB_WC_SUCCESS : IB_WC_WR_FLUSH_ERR; - + if (atomic_dec_and_test(&qp->s_dma_busy)) { + spin_lock_irqsave(&qp->s_lock, flags); + if (tx->wqe) + ipath_send_complete(qp, tx->wqe, ibs); + if ((ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND && + qp->s_last != qp->s_head) || + (qp->s_flags & IPATH_S_WAIT_DMA)) + ipath_schedule_send(qp); + spin_unlock_irqrestore(&qp->s_lock, flags); + wake_up(&qp->wait_dma); + } else if (tx->wqe) { + spin_lock_irqsave(&qp->s_lock, flags); ipath_send_complete(qp, tx->wqe, ibs); + spin_unlock_irqrestore(&qp->s_lock, flags); } if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_FREEBUF) @@ -1029,6 +1048,21 @@ static void sdma_complete(void *cookie, int status) wake_up(&qp->wait); } +static void decrement_dma_busy(struct ipath_qp *qp) +{ + unsigned int flags; + + if (atomic_dec_and_test(&qp->s_dma_busy)) { + spin_lock_irqsave(&qp->s_lock, flags); + if ((ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND && + qp->s_last != qp->s_head) || + (qp->s_flags & IPATH_S_WAIT_DMA)) + ipath_schedule_send(qp); + spin_unlock_irqrestore(&qp->s_lock, flags); + wake_up(&qp->wait_dma); + } +} + /* * Compute the number of clock cycles of delay before sending the next packet. * The multipliers reflect the number of clocks for the fastest rate so @@ -1067,9 +1101,12 @@ static int ipath_verbs_send_dma(struct ipath_qp *qp, if (tx) { qp->s_tx = NULL; /* resend previously constructed packet */ + atomic_inc(&qp->s_dma_busy); ret = ipath_sdma_verbs_send(dd, tx->ss, tx->len, tx); - if (ret) + if (ret) { qp->s_tx = tx; + decrement_dma_busy(qp); + } goto bail; } @@ -1120,12 +1157,14 @@ static int ipath_verbs_send_dma(struct ipath_qp *qp, tx->txreq.sg_count = ndesc; tx->map_len = (hdrwords + 2) << 2; tx->txreq.map_addr = &tx->hdr; + atomic_inc(&qp->s_dma_busy); ret = ipath_sdma_verbs_send(dd, ss, dwords, tx); if (ret) { /* save ss and length in dwords */ tx->ss = ss; tx->len = dwords; qp->s_tx = tx; + decrement_dma_busy(qp); } goto bail; } @@ -1146,6 +1185,7 @@ static int ipath_verbs_send_dma(struct ipath_qp *qp, memcpy(piobuf, hdr, hdrwords << 2); ipath_copy_from_sge(piobuf + hdrwords, ss, len); + atomic_inc(&qp->s_dma_busy); ret = ipath_sdma_verbs_send(dd, NULL, 0, tx); /* * If we couldn't queue the DMA request, save the info @@ -1156,6 +1196,7 @@ static int ipath_verbs_send_dma(struct ipath_qp *qp, tx->ss = NULL; tx->len = 0; qp->s_tx = tx; + decrement_dma_busy(qp); } dev->n_unaligned++; goto bail; @@ -1179,6 +1220,7 @@ static int ipath_verbs_send_pio(struct ipath_qp *qp, unsigned flush_wc; u32 control; int ret; + unsigned int flags; piobuf = ipath_getpiobuf(dd, plen, NULL); if (unlikely(piobuf == NULL)) { @@ -1249,8 +1291,11 @@ static int ipath_verbs_send_pio(struct ipath_qp *qp, } copy_io(piobuf, ss, len, flush_wc); done: - if (qp->s_wqe) + if (qp->s_wqe) { + spin_lock_irqsave(&qp->s_lock, flags); ipath_send_complete(qp, qp->s_wqe, IB_WC_SUCCESS); + spin_unlock_irqrestore(&qp->s_lock, flags); + } ret = 0; bail: return ret; @@ -1283,19 +1328,12 @@ int ipath_verbs_send(struct ipath_qp *qp, struct ipath_ib_header *hdr, * can defer SDMA restart until link goes ACTIVE without * worrying about just how we got there. */ - if (qp->ibqp.qp_type == IB_QPT_SMI) + if (qp->ibqp.qp_type == IB_QPT_SMI || + !(dd->ipath_flags & IPATH_HAS_SEND_DMA)) ret = ipath_verbs_send_pio(qp, hdr, hdrwords, ss, len, plen, dwords); - /* All non-VL15 packets are dropped if link is not ACTIVE */ - else if (!(dd->ipath_flags & IPATH_LINKACTIVE)) { - if (qp->s_wqe) - ipath_send_complete(qp, qp->s_wqe, IB_WC_SUCCESS); - ret = 0; - } else if (dd->ipath_flags & IPATH_HAS_SEND_DMA) - ret = ipath_verbs_send_dma(qp, hdr, hdrwords, ss, len, - plen, dwords); else - ret = ipath_verbs_send_pio(qp, hdr, hdrwords, ss, len, + ret = ipath_verbs_send_dma(qp, hdr, hdrwords, ss, len, plen, dwords); return ret; @@ -1403,27 +1441,46 @@ bail: * This is called from ipath_intr() at interrupt level when a PIO buffer is * available after ipath_verbs_send() returned an error that no buffers were * available. Return 1 if we consumed all the PIO buffers and we still have - * QPs waiting for buffers (for now, just do a tasklet_hi_schedule and + * QPs waiting for buffers (for now, just restart the send tasklet and * return zero). */ int ipath_ib_piobufavail(struct ipath_ibdev *dev) { + struct list_head *list; + struct ipath_qp *qplist; struct ipath_qp *qp; unsigned long flags; if (dev == NULL) goto bail; + list = &dev->piowait; + qplist = NULL; + spin_lock_irqsave(&dev->pending_lock, flags); - while (!list_empty(&dev->piowait)) { - qp = list_entry(dev->piowait.next, struct ipath_qp, - piowait); + while (!list_empty(list)) { + qp = list_entry(list->next, struct ipath_qp, piowait); list_del_init(&qp->piowait); - clear_bit(IPATH_S_BUSY, &qp->s_busy); - tasklet_hi_schedule(&qp->s_task); + qp->pio_next = qplist; + qplist = qp; + atomic_inc(&qp->refcount); } spin_unlock_irqrestore(&dev->pending_lock, flags); + while (qplist != NULL) { + qp = qplist; + qplist = qp->pio_next; + + spin_lock_irqsave(&qp->s_lock, flags); + if (ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK) + ipath_schedule_send(qp); + spin_unlock_irqrestore(&qp->s_lock, flags); + + /* Notify ipath_destroy_qp() if it is waiting. */ + if (atomic_dec_and_test(&qp->refcount)) + wake_up(&qp->wait); + } + bail: return 0; } @@ -1437,7 +1494,8 @@ static int ipath_query_device(struct ib_device *ibdev, props->device_cap_flags = IB_DEVICE_BAD_PKEY_CNTR | IB_DEVICE_BAD_QKEY_CNTR | IB_DEVICE_SHUTDOWN_PORT | - IB_DEVICE_SYS_IMAGE_GUID; + IB_DEVICE_SYS_IMAGE_GUID | IB_DEVICE_RC_RNR_NAK_GEN | + IB_DEVICE_PORT_ACTIVE_EVENT | IB_DEVICE_SRQ_RESIZE; props->page_size_cap = PAGE_SIZE; props->vendor_id = dev->dd->ipath_vendorid; props->vendor_part_id = dev->dd->ipath_deviceid; @@ -2145,11 +2203,12 @@ bail: void ipath_unregister_ib_device(struct ipath_ibdev *dev) { struct ib_device *ibdev = &dev->ibdev; - - disable_timer(dev->dd); + u32 qps_inuse; ib_unregister_device(ibdev); + disable_timer(dev->dd); + if (!list_empty(&dev->pending[0]) || !list_empty(&dev->pending[1]) || !list_empty(&dev->pending[2])) @@ -2164,7 +2223,10 @@ void ipath_unregister_ib_device(struct ipath_ibdev *dev) * Note that ipath_unregister_ib_device() can be called before all * the QPs are destroyed! */ - ipath_free_all_qps(&dev->qp_table); + qps_inuse = ipath_free_all_qps(&dev->qp_table); + if (qps_inuse) + ipath_dev_err(dev->dd, "QP memory leak! %u still in use\n", + qps_inuse); kfree(dev->qp_table.table); kfree(dev->lk_table.table); kfree(dev->txreq_bufs); @@ -2215,17 +2277,14 @@ static ssize_t show_stats(struct device *device, struct device_attribute *attr, "RC OTH NAKs %d\n" "RC timeouts %d\n" "RC RDMA dup %d\n" - "RC stalls %d\n" "piobuf wait %d\n" - "no piobuf %d\n" "unaligned %d\n" "PKT drops %d\n" "WQE errs %d\n", dev->n_rc_resends, dev->n_rc_qacks, dev->n_rc_acks, dev->n_seq_naks, dev->n_rdma_seq, dev->n_rnr_naks, dev->n_other_naks, dev->n_timeouts, - dev->n_rdma_dup_busy, dev->n_rc_stalls, dev->n_piowait, - dev->n_no_piobuf, dev->n_unaligned, + dev->n_rdma_dup_busy, dev->n_piowait, dev->n_unaligned, dev->n_pkt_drops, dev->n_wqe_errs); for (i = 0; i < ARRAY_SIZE(dev->opstats); i++) { const struct ipath_opcode_stats *si = &dev->opstats[i]; diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.h b/drivers/infiniband/hw/ipath/ipath_verbs.h index 6514aa8306c..9d12ae8a778 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.h +++ b/drivers/infiniband/hw/ipath/ipath_verbs.h @@ -74,6 +74,11 @@ #define IPATH_POST_RECV_OK 0x02 #define IPATH_PROCESS_RECV_OK 0x04 #define IPATH_PROCESS_SEND_OK 0x08 +#define IPATH_PROCESS_NEXT_SEND_OK 0x10 +#define IPATH_FLUSH_SEND 0x20 +#define IPATH_FLUSH_RECV 0x40 +#define IPATH_PROCESS_OR_FLUSH_SEND \ + (IPATH_PROCESS_SEND_OK | IPATH_FLUSH_SEND) /* IB Performance Manager status values */ #define IB_PMA_SAMPLE_STATUS_DONE 0x00 @@ -353,12 +358,14 @@ struct ipath_qp { struct ib_qp ibqp; struct ipath_qp *next; /* link list for QPN hash table */ struct ipath_qp *timer_next; /* link list for ipath_ib_timer() */ + struct ipath_qp *pio_next; /* link for ipath_ib_piobufavail() */ struct list_head piowait; /* link for wait PIO buf */ struct list_head timerwait; /* link for waiting for timeouts */ struct ib_ah_attr remote_ah_attr; struct ipath_ib_header s_hdr; /* next packet header to send */ atomic_t refcount; wait_queue_head_t wait; + wait_queue_head_t wait_dma; struct tasklet_struct s_task; struct ipath_mmap_info *ip; struct ipath_sge_state *s_cur_sge; @@ -369,7 +376,7 @@ struct ipath_qp { struct ipath_sge_state s_rdma_read_sge; struct ipath_sge_state r_sge; /* current receive data */ spinlock_t s_lock; - unsigned long s_busy; + atomic_t s_dma_busy; u16 s_pkt_delay; u16 s_hdrwords; /* size of s_hdr in 32 bit words */ u32 s_cur_size; /* size of send packet in bytes */ @@ -383,6 +390,7 @@ struct ipath_qp { u32 s_rnr_timeout; /* number of milliseconds for RNR timeout */ u32 r_ack_psn; /* PSN for next ACK or atomic ACK */ u64 r_wr_id; /* ID for current receive WQE */ + unsigned long r_aflags; u32 r_len; /* total length of r_sge */ u32 r_rcv_len; /* receive data len processed */ u32 r_psn; /* expected rcv packet sequence number */ @@ -394,8 +402,7 @@ struct ipath_qp { u8 r_state; /* opcode of last packet received */ u8 r_nak_state; /* non-zero if NAK is pending */ u8 r_min_rnr_timer; /* retry timeout value for RNR NAKs */ - u8 r_reuse_sge; /* for UC receive errors */ - u8 r_wrid_valid; /* r_wrid set but CQ entry not yet made */ + u8 r_flags; u8 r_max_rd_atomic; /* max number of RDMA read/atomic to receive */ u8 r_head_ack_queue; /* index into s_ack_queue[] */ u8 qp_access_flags; @@ -404,13 +411,13 @@ struct ipath_qp { u8 s_rnr_retry_cnt; u8 s_retry; /* requester retry counter */ u8 s_rnr_retry; /* requester RNR retry counter */ - u8 s_wait_credit; /* limit number of unacked packets sent */ u8 s_pkey_index; /* PKEY index to use */ u8 s_max_rd_atomic; /* max number of RDMA read/atomic to send */ u8 s_num_rd_atomic; /* number of RDMA read/atomic pending */ u8 s_tail_ack_queue; /* index into s_ack_queue[] */ u8 s_flags; u8 s_dmult; + u8 s_draining; u8 timeout; /* Timeout for this QP */ enum ib_mtu path_mtu; u32 remote_qpn; @@ -428,16 +435,40 @@ struct ipath_qp { struct ipath_sge r_sg_list[0]; /* verified SGEs */ }; -/* Bit definition for s_busy. */ -#define IPATH_S_BUSY 0 +/* + * Atomic bit definitions for r_aflags. + */ +#define IPATH_R_WRID_VALID 0 + +/* + * Bit definitions for r_flags. + */ +#define IPATH_R_REUSE_SGE 0x01 +#define IPATH_R_RDMAR_SEQ 0x02 /* * Bit definitions for s_flags. + * + * IPATH_S_FENCE_PENDING - waiting for all prior RDMA read or atomic SWQEs + * before processing the next SWQE + * IPATH_S_RDMAR_PENDING - waiting for any RDMA read or atomic SWQEs + * before processing the next SWQE + * IPATH_S_WAITING - waiting for RNR timeout or send buffer available. + * IPATH_S_WAIT_SSN_CREDIT - waiting for RC credits to process next SWQE + * IPATH_S_WAIT_DMA - waiting for send DMA queue to drain before generating + * next send completion entry not via send DMA. */ #define IPATH_S_SIGNAL_REQ_WR 0x01 #define IPATH_S_FENCE_PENDING 0x02 #define IPATH_S_RDMAR_PENDING 0x04 #define IPATH_S_ACK_PENDING 0x08 +#define IPATH_S_BUSY 0x10 +#define IPATH_S_WAITING 0x20 +#define IPATH_S_WAIT_SSN_CREDIT 0x40 +#define IPATH_S_WAIT_DMA 0x80 + +#define IPATH_S_ANY_WAIT (IPATH_S_FENCE_PENDING | IPATH_S_RDMAR_PENDING | \ + IPATH_S_WAITING | IPATH_S_WAIT_SSN_CREDIT | IPATH_S_WAIT_DMA) #define IPATH_PSN_CREDIT 512 @@ -573,13 +604,11 @@ struct ipath_ibdev { u32 n_rnr_naks; u32 n_other_naks; u32 n_timeouts; - u32 n_rc_stalls; u32 n_pkt_drops; u32 n_vl15_dropped; u32 n_wqe_errs; u32 n_rdma_dup_busy; u32 n_piowait; - u32 n_no_piobuf; u32 n_unaligned; u32 port_cap_flags; u32 pma_sample_start; @@ -657,6 +686,17 @@ static inline struct ipath_ibdev *to_idev(struct ib_device *ibdev) return container_of(ibdev, struct ipath_ibdev, ibdev); } +/* + * This must be called with s_lock held. + */ +static inline void ipath_schedule_send(struct ipath_qp *qp) +{ + if (qp->s_flags & IPATH_S_ANY_WAIT) + qp->s_flags &= ~IPATH_S_ANY_WAIT; + if (!(qp->s_flags & IPATH_S_BUSY)) + tasklet_hi_schedule(&qp->s_task); +} + int ipath_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num, @@ -706,12 +746,10 @@ int ipath_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int ipath_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, int attr_mask, struct ib_qp_init_attr *init_attr); -void ipath_free_all_qps(struct ipath_qp_table *qpt); +unsigned ipath_free_all_qps(struct ipath_qp_table *qpt); int ipath_init_qp_table(struct ipath_ibdev *idev, int size); -void ipath_sqerror_qp(struct ipath_qp *qp, struct ib_wc *wc); - void ipath_get_credit(struct ipath_qp *qp, u32 aeth); unsigned ipath_ib_rate_to_mult(enum ib_rate rate); @@ -729,7 +767,9 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr, int has_grh, void *data, u32 tlen, struct ipath_qp *qp); -void ipath_restart_rc(struct ipath_qp *qp, u32 psn, struct ib_wc *wc); +void ipath_restart_rc(struct ipath_qp *qp, u32 psn); + +void ipath_rc_error(struct ipath_qp *qp, enum ib_wc_status err); int ipath_post_ud_send(struct ipath_qp *qp, struct ib_send_wr *wr); |