diff options
Diffstat (limited to 'drivers/infiniband/hw/qib/qib_init.c')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_init.c | 1782 |
1 files changed, 0 insertions, 1782 deletions
diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c deleted file mode 100644 index 1c45814f5646..000000000000 --- a/drivers/infiniband/hw/qib/qib_init.c +++ /dev/null @@ -1,1782 +0,0 @@ -/* - * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved. - * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. - * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. - * - * This software is available to you under a choice of one of two - * licenses. You may choose to be licensed under the terms of the GNU - * General Public License (GPL) Version 2, available from the file - * COPYING in the main directory of this source tree, or the - * OpenIB.org BSD license below: - * - * Redistribution and use in source and binary forms, with or - * without modification, are permitted provided that the following - * conditions are met: - * - * - Redistributions of source code must retain the above - * copyright notice, this list of conditions and the following - * disclaimer. - * - * - Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following - * disclaimer in the documentation and/or other materials - * provided with the distribution. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include <linux/pci.h> -#include <linux/netdevice.h> -#include <linux/vmalloc.h> -#include <linux/delay.h> -#include <linux/module.h> -#include <linux/printk.h> -#ifdef CONFIG_INFINIBAND_QIB_DCA -#include <linux/dca.h> -#endif -#include <rdma/rdma_vt.h> - -#include "qib.h" -#include "qib_common.h" -#include "qib_mad.h" -#ifdef CONFIG_DEBUG_FS -#include "qib_debugfs.h" -#include "qib_verbs.h" -#endif - -#undef pr_fmt -#define pr_fmt(fmt) QIB_DRV_NAME ": " fmt - -/* - * min buffers we want to have per context, after driver - */ -#define QIB_MIN_USER_CTXT_BUFCNT 7 - -#define QLOGIC_IB_R_SOFTWARE_MASK 0xFF -#define QLOGIC_IB_R_SOFTWARE_SHIFT 24 -#define QLOGIC_IB_R_EMULATOR_MASK (1ULL<<62) - -/* - * Number of ctxts we are configured to use (to allow for more pio - * buffers per ctxt, etc.) Zero means use chip value. - */ -ushort qib_cfgctxts; -module_param_named(cfgctxts, qib_cfgctxts, ushort, S_IRUGO); -MODULE_PARM_DESC(cfgctxts, "Set max number of contexts to use"); - -unsigned qib_numa_aware; -module_param_named(numa_aware, qib_numa_aware, uint, S_IRUGO); -MODULE_PARM_DESC(numa_aware, - "0 -> PSM allocation close to HCA, 1 -> PSM allocation local to process"); - -/* - * If set, do not write to any regs if avoidable, hack to allow - * check for deranged default register values. - */ -ushort qib_mini_init; -module_param_named(mini_init, qib_mini_init, ushort, S_IRUGO); -MODULE_PARM_DESC(mini_init, "If set, do minimal diag init"); - -unsigned qib_n_krcv_queues; -module_param_named(krcvqs, qib_n_krcv_queues, uint, S_IRUGO); -MODULE_PARM_DESC(krcvqs, "number of kernel receive queues per IB port"); - -unsigned qib_cc_table_size; -module_param_named(cc_table_size, qib_cc_table_size, uint, S_IRUGO); -MODULE_PARM_DESC(cc_table_size, "Congestion control table entries 0 (CCA disabled - default), min = 128, max = 1984"); - -static void verify_interrupt(struct timer_list *); - -DEFINE_XARRAY_FLAGS(qib_dev_table, XA_FLAGS_ALLOC | XA_FLAGS_LOCK_IRQ); -u32 qib_cpulist_count; -unsigned long *qib_cpulist; - -/* set number of contexts we'll actually use */ -void qib_set_ctxtcnt(struct qib_devdata *dd) -{ - if (!qib_cfgctxts) { - dd->cfgctxts = dd->first_user_ctxt + num_online_cpus(); - if (dd->cfgctxts > dd->ctxtcnt) - dd->cfgctxts = dd->ctxtcnt; - } else if (qib_cfgctxts < dd->num_pports) - dd->cfgctxts = dd->ctxtcnt; - else if (qib_cfgctxts <= dd->ctxtcnt) - dd->cfgctxts = qib_cfgctxts; - else - dd->cfgctxts = dd->ctxtcnt; - dd->freectxts = (dd->first_user_ctxt > dd->cfgctxts) ? 0 : - dd->cfgctxts - dd->first_user_ctxt; -} - -/* - * Common code for creating the receive context array. - */ -int qib_create_ctxts(struct qib_devdata *dd) -{ - unsigned i; - int local_node_id = pcibus_to_node(dd->pcidev->bus); - - if (local_node_id < 0) - local_node_id = numa_node_id(); - dd->assigned_node_id = local_node_id; - - /* - * Allocate full ctxtcnt array, rather than just cfgctxts, because - * cleanup iterates across all possible ctxts. - */ - dd->rcd = kcalloc(dd->ctxtcnt, sizeof(*dd->rcd), GFP_KERNEL); - if (!dd->rcd) - return -ENOMEM; - - /* create (one or more) kctxt */ - for (i = 0; i < dd->first_user_ctxt; ++i) { - struct qib_pportdata *ppd; - struct qib_ctxtdata *rcd; - - if (dd->skip_kctxt_mask & (1 << i)) - continue; - - ppd = dd->pport + (i % dd->num_pports); - - rcd = qib_create_ctxtdata(ppd, i, dd->assigned_node_id); - if (!rcd) { - qib_dev_err(dd, - "Unable to allocate ctxtdata for Kernel ctxt, failing\n"); - kfree(dd->rcd); - dd->rcd = NULL; - return -ENOMEM; - } - rcd->pkeys[0] = QIB_DEFAULT_P_KEY; - rcd->seq_cnt = 1; - } - return 0; -} - -/* - * Common code for user and kernel context setup. - */ -struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *ppd, u32 ctxt, - int node_id) -{ - struct qib_devdata *dd = ppd->dd; - struct qib_ctxtdata *rcd; - - rcd = kzalloc_node(sizeof(*rcd), GFP_KERNEL, node_id); - if (rcd) { - INIT_LIST_HEAD(&rcd->qp_wait_list); - rcd->node_id = node_id; - rcd->ppd = ppd; - rcd->dd = dd; - rcd->cnt = 1; - rcd->ctxt = ctxt; - dd->rcd[ctxt] = rcd; -#ifdef CONFIG_DEBUG_FS - if (ctxt < dd->first_user_ctxt) { /* N/A for PSM contexts */ - rcd->opstats = kzalloc_node(sizeof(*rcd->opstats), - GFP_KERNEL, node_id); - if (!rcd->opstats) { - kfree(rcd); - qib_dev_err(dd, - "Unable to allocate per ctxt stats buffer\n"); - return NULL; - } - } -#endif - dd->f_init_ctxt(rcd); - - /* - * To avoid wasting a lot of memory, we allocate 32KB chunks - * of physically contiguous memory, advance through it until - * used up and then allocate more. Of course, we need - * memory to store those extra pointers, now. 32KB seems to - * be the most that is "safe" under memory pressure - * (creating large files and then copying them over - * NFS while doing lots of MPI jobs). The OOM killer can - * get invoked, even though we say we can sleep and this can - * cause significant system problems.... - */ - rcd->rcvegrbuf_size = 0x8000; - rcd->rcvegrbufs_perchunk = - rcd->rcvegrbuf_size / dd->rcvegrbufsize; - rcd->rcvegrbuf_chunks = (rcd->rcvegrcnt + - rcd->rcvegrbufs_perchunk - 1) / - rcd->rcvegrbufs_perchunk; - rcd->rcvegrbufs_perchunk_shift = - ilog2(rcd->rcvegrbufs_perchunk); - } - return rcd; -} - -/* - * Common code for initializing the physical port structure. - */ -int qib_init_pportdata(struct qib_pportdata *ppd, struct qib_devdata *dd, - u8 hw_pidx, u8 port) -{ - int size; - - ppd->dd = dd; - ppd->hw_pidx = hw_pidx; - ppd->port = port; /* IB port number, not index */ - - spin_lock_init(&ppd->sdma_lock); - spin_lock_init(&ppd->lflags_lock); - spin_lock_init(&ppd->cc_shadow_lock); - init_waitqueue_head(&ppd->state_wait); - - timer_setup(&ppd->symerr_clear_timer, qib_clear_symerror_on_linkup, 0); - - ppd->qib_wq = NULL; - ppd->ibport_data.pmastats = - alloc_percpu(struct qib_pma_counters); - if (!ppd->ibport_data.pmastats) - return -ENOMEM; - ppd->ibport_data.rvp.rc_acks = alloc_percpu(u64); - ppd->ibport_data.rvp.rc_qacks = alloc_percpu(u64); - ppd->ibport_data.rvp.rc_delayed_comp = alloc_percpu(u64); - if (!(ppd->ibport_data.rvp.rc_acks) || - !(ppd->ibport_data.rvp.rc_qacks) || - !(ppd->ibport_data.rvp.rc_delayed_comp)) - return -ENOMEM; - - if (qib_cc_table_size < IB_CCT_MIN_ENTRIES) - goto bail; - - ppd->cc_supported_table_entries = min(max_t(int, qib_cc_table_size, - IB_CCT_MIN_ENTRIES), IB_CCT_ENTRIES*IB_CC_TABLE_CAP_DEFAULT); - - ppd->cc_max_table_entries = - ppd->cc_supported_table_entries/IB_CCT_ENTRIES; - - size = IB_CC_TABLE_CAP_DEFAULT * sizeof(struct ib_cc_table_entry) - * IB_CCT_ENTRIES; - ppd->ccti_entries = kzalloc(size, GFP_KERNEL); - if (!ppd->ccti_entries) - goto bail; - - size = IB_CC_CCS_ENTRIES * sizeof(struct ib_cc_congestion_entry); - ppd->congestion_entries = kzalloc(size, GFP_KERNEL); - if (!ppd->congestion_entries) - goto bail_1; - - size = sizeof(struct cc_table_shadow); - ppd->ccti_entries_shadow = kzalloc(size, GFP_KERNEL); - if (!ppd->ccti_entries_shadow) - goto bail_2; - - size = sizeof(struct ib_cc_congestion_setting_attr); - ppd->congestion_entries_shadow = kzalloc(size, GFP_KERNEL); - if (!ppd->congestion_entries_shadow) - goto bail_3; - - return 0; - -bail_3: - kfree(ppd->ccti_entries_shadow); - ppd->ccti_entries_shadow = NULL; -bail_2: - kfree(ppd->congestion_entries); - ppd->congestion_entries = NULL; -bail_1: - kfree(ppd->ccti_entries); - ppd->ccti_entries = NULL; -bail: - /* User is intentionally disabling the congestion control agent */ - if (!qib_cc_table_size) - return 0; - - if (qib_cc_table_size < IB_CCT_MIN_ENTRIES) { - qib_cc_table_size = 0; - qib_dev_err(dd, - "Congestion Control table size %d less than minimum %d for port %d\n", - qib_cc_table_size, IB_CCT_MIN_ENTRIES, port); - } - - qib_dev_err(dd, "Congestion Control Agent disabled for port %d\n", - port); - return 0; -} - -static int init_pioavailregs(struct qib_devdata *dd) -{ - int ret, pidx; - u64 *status_page; - - dd->pioavailregs_dma = dma_alloc_coherent( - &dd->pcidev->dev, PAGE_SIZE, &dd->pioavailregs_phys, - GFP_KERNEL); - if (!dd->pioavailregs_dma) { - qib_dev_err(dd, - "failed to allocate PIOavail reg area in memory\n"); - ret = -ENOMEM; - goto done; - } - - /* - * We really want L2 cache aligned, but for current CPUs of - * interest, they are the same. - */ - status_page = (u64 *) - ((char *) dd->pioavailregs_dma + - ((2 * L1_CACHE_BYTES + - dd->pioavregs * sizeof(u64)) & ~L1_CACHE_BYTES)); - /* device status comes first, for backwards compatibility */ - dd->devstatusp = status_page; - *status_page++ = 0; - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - dd->pport[pidx].statusp = status_page; - *status_page++ = 0; - } - - /* - * Setup buffer to hold freeze and other messages, accessible to - * apps, following statusp. This is per-unit, not per port. - */ - dd->freezemsg = (char *) status_page; - *dd->freezemsg = 0; - /* length of msg buffer is "whatever is left" */ - ret = (char *) status_page - (char *) dd->pioavailregs_dma; - dd->freezelen = PAGE_SIZE - ret; - - ret = 0; - -done: - return ret; -} - -/** - * init_shadow_tids - allocate the shadow TID array - * @dd: the qlogic_ib device - * - * allocate the shadow TID array, so we can qib_munlock previous - * entries. It may make more sense to move the pageshadow to the - * ctxt data structure, so we only allocate memory for ctxts actually - * in use, since we at 8k per ctxt, now. - * We don't want failures here to prevent use of the driver/chip, - * so no return value. - */ -static void init_shadow_tids(struct qib_devdata *dd) -{ - struct page **pages; - dma_addr_t *addrs; - - pages = vzalloc(array_size(sizeof(struct page *), - dd->cfgctxts * dd->rcvtidcnt)); - if (!pages) - goto bail; - - addrs = vzalloc(array_size(sizeof(dma_addr_t), - dd->cfgctxts * dd->rcvtidcnt)); - if (!addrs) - goto bail_free; - - dd->pageshadow = pages; - dd->physshadow = addrs; - return; - -bail_free: - vfree(pages); -bail: - dd->pageshadow = NULL; -} - -/* - * Do initialization for device that is only needed on - * first detect, not on resets. - */ -static int loadtime_init(struct qib_devdata *dd) -{ - int ret = 0; - - if (((dd->revision >> QLOGIC_IB_R_SOFTWARE_SHIFT) & - QLOGIC_IB_R_SOFTWARE_MASK) != QIB_CHIP_SWVERSION) { - qib_dev_err(dd, - "Driver only handles version %d, chip swversion is %d (%llx), failing\n", - QIB_CHIP_SWVERSION, - (int)(dd->revision >> - QLOGIC_IB_R_SOFTWARE_SHIFT) & - QLOGIC_IB_R_SOFTWARE_MASK, - (unsigned long long) dd->revision); - ret = -ENOSYS; - goto done; - } - - if (dd->revision & QLOGIC_IB_R_EMULATOR_MASK) - qib_devinfo(dd->pcidev, "%s", dd->boardversion); - - spin_lock_init(&dd->pioavail_lock); - spin_lock_init(&dd->sendctrl_lock); - spin_lock_init(&dd->uctxt_lock); - spin_lock_init(&dd->qib_diag_trans_lock); - spin_lock_init(&dd->eep_st_lock); - mutex_init(&dd->eep_lock); - - if (qib_mini_init) - goto done; - - ret = init_pioavailregs(dd); - init_shadow_tids(dd); - - qib_get_eeprom_info(dd); - - /* setup time (don't start yet) to verify we got interrupt */ - timer_setup(&dd->intrchk_timer, verify_interrupt, 0); -done: - return ret; -} - -/** - * init_after_reset - re-initialize after a reset - * @dd: the qlogic_ib device - * - * sanity check at least some of the values after reset, and - * ensure no receive or transmit (explicitly, in case reset - * failed - */ -static int init_after_reset(struct qib_devdata *dd) -{ - int i; - - /* - * Ensure chip does no sends or receives, tail updates, or - * pioavail updates while we re-initialize. This is mostly - * for the driver data structures, not chip registers. - */ - for (i = 0; i < dd->num_pports; ++i) { - /* - * ctxt == -1 means "all contexts". Only really safe for - * _dis_abling things, as here. - */ - dd->f_rcvctrl(dd->pport + i, QIB_RCVCTRL_CTXT_DIS | - QIB_RCVCTRL_INTRAVAIL_DIS | - QIB_RCVCTRL_TAILUPD_DIS, -1); - /* Redundant across ports for some, but no big deal. */ - dd->f_sendctrl(dd->pport + i, QIB_SENDCTRL_SEND_DIS | - QIB_SENDCTRL_AVAIL_DIS); - } - - return 0; -} - -static void enable_chip(struct qib_devdata *dd) -{ - u64 rcvmask; - int i; - - /* - * Enable PIO send, and update of PIOavail regs to memory. - */ - for (i = 0; i < dd->num_pports; ++i) - dd->f_sendctrl(dd->pport + i, QIB_SENDCTRL_SEND_ENB | - QIB_SENDCTRL_AVAIL_ENB); - /* - * Enable kernel ctxts' receive and receive interrupt. - * Other ctxts done as user opens and inits them. - */ - rcvmask = QIB_RCVCTRL_CTXT_ENB | QIB_RCVCTRL_INTRAVAIL_ENB; - rcvmask |= (dd->flags & QIB_NODMA_RTAIL) ? - QIB_RCVCTRL_TAILUPD_DIS : QIB_RCVCTRL_TAILUPD_ENB; - for (i = 0; dd->rcd && i < dd->first_user_ctxt; ++i) { - struct qib_ctxtdata *rcd = dd->rcd[i]; - - if (rcd) - dd->f_rcvctrl(rcd->ppd, rcvmask, i); - } -} - -static void verify_interrupt(struct timer_list *t) -{ - struct qib_devdata *dd = timer_container_of(dd, t, intrchk_timer); - u64 int_counter; - - if (!dd) - return; /* being torn down */ - - /* - * If we don't have a lid or any interrupts, let the user know and - * don't bother checking again. - */ - int_counter = qib_int_counter(dd) - dd->z_int_counter; - if (int_counter == 0) { - if (!dd->f_intr_fallback(dd)) - dev_err(&dd->pcidev->dev, - "No interrupts detected, not usable.\n"); - else /* re-arm the timer to see if fallback works */ - mod_timer(&dd->intrchk_timer, jiffies + HZ/2); - } -} - -static void init_piobuf_state(struct qib_devdata *dd) -{ - int i, pidx; - u32 uctxts; - - /* - * Ensure all buffers are free, and fifos empty. Buffers - * are common, so only do once for port 0. - * - * After enable and qib_chg_pioavailkernel so we can safely - * enable pioavail updates and PIOENABLE. After this, packets - * are ready and able to go out. - */ - dd->f_sendctrl(dd->pport, QIB_SENDCTRL_DISARM_ALL); - for (pidx = 0; pidx < dd->num_pports; ++pidx) - dd->f_sendctrl(dd->pport + pidx, QIB_SENDCTRL_FLUSH); - - /* - * If not all sendbufs are used, add the one to each of the lower - * numbered contexts. pbufsctxt and lastctxt_piobuf are - * calculated in chip-specific code because it may cause some - * chip-specific adjustments to be made. - */ - uctxts = dd->cfgctxts - dd->first_user_ctxt; - dd->ctxts_extrabuf = dd->pbufsctxt ? - dd->lastctxt_piobuf - (dd->pbufsctxt * uctxts) : 0; - - /* - * Set up the shadow copies of the piobufavail registers, - * which we compare against the chip registers for now, and - * the in memory DMA'ed copies of the registers. - * By now pioavail updates to memory should have occurred, so - * copy them into our working/shadow registers; this is in - * case something went wrong with abort, but mostly to get the - * initial values of the generation bit correct. - */ - for (i = 0; i < dd->pioavregs; i++) { - __le64 tmp; - - tmp = dd->pioavailregs_dma[i]; - /* - * Don't need to worry about pioavailkernel here - * because we will call qib_chg_pioavailkernel() later - * in initialization, to busy out buffers as needed. - */ - dd->pioavailshadow[i] = le64_to_cpu(tmp); - } - while (i < ARRAY_SIZE(dd->pioavailshadow)) - dd->pioavailshadow[i++] = 0; /* for debugging sanity */ - - /* after pioavailshadow is setup */ - qib_chg_pioavailkernel(dd, 0, dd->piobcnt2k + dd->piobcnt4k, - TXCHK_CHG_TYPE_KERN, NULL); - dd->f_initvl15_bufs(dd); -} - -/** - * qib_create_workqueues - create per port workqueues - * @dd: the qlogic_ib device - */ -static int qib_create_workqueues(struct qib_devdata *dd) -{ - int pidx; - struct qib_pportdata *ppd; - - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - if (!ppd->qib_wq) { - ppd->qib_wq = alloc_ordered_workqueue("qib%d_%d", - WQ_MEM_RECLAIM, - dd->unit, pidx); - if (!ppd->qib_wq) - goto wq_error; - } - } - return 0; -wq_error: - pr_err("create_singlethread_workqueue failed for port %d\n", - pidx + 1); - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - if (ppd->qib_wq) { - destroy_workqueue(ppd->qib_wq); - ppd->qib_wq = NULL; - } - } - return -ENOMEM; -} - -static void qib_free_pportdata(struct qib_pportdata *ppd) -{ - free_percpu(ppd->ibport_data.pmastats); - free_percpu(ppd->ibport_data.rvp.rc_acks); - free_percpu(ppd->ibport_data.rvp.rc_qacks); - free_percpu(ppd->ibport_data.rvp.rc_delayed_comp); - ppd->ibport_data.pmastats = NULL; -} - -/** - * qib_init - do the actual initialization sequence on the chip - * @dd: the qlogic_ib device - * @reinit: reinitializing, so don't allocate new memory - * - * Do the actual initialization sequence on the chip. This is done - * both from the init routine called from the PCI infrastructure, and - * when we reset the chip, or detect that it was reset internally, - * or it's administratively re-enabled. - * - * Memory allocation here and in called routines is only done in - * the first case (reinit == 0). We have to be careful, because even - * without memory allocation, we need to re-write all the chip registers - * TIDs, etc. after the reset or enable has completed. - */ -int qib_init(struct qib_devdata *dd, int reinit) -{ - int ret = 0, pidx, lastfail = 0; - u32 portok = 0; - unsigned i; - struct qib_ctxtdata *rcd; - struct qib_pportdata *ppd; - unsigned long flags; - - /* Set linkstate to unknown, so we can watch for a transition. */ - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - spin_lock_irqsave(&ppd->lflags_lock, flags); - ppd->lflags &= ~(QIBL_LINKACTIVE | QIBL_LINKARMED | - QIBL_LINKDOWN | QIBL_LINKINIT | - QIBL_LINKV); - spin_unlock_irqrestore(&ppd->lflags_lock, flags); - } - - if (reinit) - ret = init_after_reset(dd); - else - ret = loadtime_init(dd); - if (ret) - goto done; - - /* Bypass most chip-init, to get to device creation */ - if (qib_mini_init) - return 0; - - ret = dd->f_late_initreg(dd); - if (ret) - goto done; - - /* dd->rcd can be NULL if early init failed */ - for (i = 0; dd->rcd && i < dd->first_user_ctxt; ++i) { - /* - * Set up the (kernel) rcvhdr queue and egr TIDs. If doing - * re-init, the simplest way to handle this is to free - * existing, and re-allocate. - * Need to re-create rest of ctxt 0 ctxtdata as well. - */ - rcd = dd->rcd[i]; - if (!rcd) - continue; - - lastfail = qib_create_rcvhdrq(dd, rcd); - if (!lastfail) - lastfail = qib_setup_eagerbufs(rcd); - if (lastfail) - qib_dev_err(dd, - "failed to allocate kernel ctxt's rcvhdrq and/or egr bufs\n"); - } - - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - int mtu; - - if (lastfail) - ret = lastfail; - ppd = dd->pport + pidx; - mtu = ib_mtu_enum_to_int(qib_ibmtu); - if (mtu == -1) { - mtu = QIB_DEFAULT_MTU; - qib_ibmtu = 0; /* don't leave invalid value */ - } - /* set max we can ever have for this driver load */ - ppd->init_ibmaxlen = min(mtu > 2048 ? - dd->piosize4k : dd->piosize2k, - dd->rcvegrbufsize + - (dd->rcvhdrentsize << 2)); - /* - * Have to initialize ibmaxlen, but this will normally - * change immediately in qib_set_mtu(). - */ - ppd->ibmaxlen = ppd->init_ibmaxlen; - qib_set_mtu(ppd, mtu); - - spin_lock_irqsave(&ppd->lflags_lock, flags); - ppd->lflags |= QIBL_IB_LINK_DISABLED; - spin_unlock_irqrestore(&ppd->lflags_lock, flags); - - lastfail = dd->f_bringup_serdes(ppd); - if (lastfail) { - qib_devinfo(dd->pcidev, - "Failed to bringup IB port %u\n", ppd->port); - lastfail = -ENETDOWN; - continue; - } - - portok++; - } - - if (!portok) { - /* none of the ports initialized */ - if (!ret && lastfail) - ret = lastfail; - else if (!ret) - ret = -ENETDOWN; - /* but continue on, so we can debug cause */ - } - - enable_chip(dd); - - init_piobuf_state(dd); - -done: - if (!ret) { - /* chip is OK for user apps; mark it as initialized */ - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - /* - * Set status even if port serdes is not initialized - * so that diags will work. - */ - *ppd->statusp |= QIB_STATUS_CHIP_PRESENT | - QIB_STATUS_INITTED; - if (!ppd->link_speed_enabled) - continue; - if (dd->flags & QIB_HAS_SEND_DMA) - ret = qib_setup_sdma(ppd); - timer_setup(&ppd->hol_timer, qib_hol_event, 0); - ppd->hol_state = QIB_HOL_UP; - } - - /* now we can enable all interrupts from the chip */ - dd->f_set_intr_state(dd, 1); - - /* - * Setup to verify we get an interrupt, and fallback - * to an alternate if necessary and possible. - */ - mod_timer(&dd->intrchk_timer, jiffies + HZ/2); - /* start stats retrieval timer */ - mod_timer(&dd->stats_timer, jiffies + HZ * ACTIVITY_TIMER); - } - - /* if ret is non-zero, we probably should do some cleanup here... */ - return ret; -} - -/* - * These next two routines are placeholders in case we don't have per-arch - * code for controlling write combining. If explicit control of write - * combining is not available, performance will probably be awful. - */ - -int __attribute__((weak)) qib_enable_wc(struct qib_devdata *dd) -{ - return -EOPNOTSUPP; -} - -void __attribute__((weak)) qib_disable_wc(struct qib_devdata *dd) -{ -} - -struct qib_devdata *qib_lookup(int unit) -{ - return xa_load(&qib_dev_table, unit); -} - -/* - * Stop the timers during unit shutdown, or after an error late - * in initialization. - */ -static void qib_stop_timers(struct qib_devdata *dd) -{ - struct qib_pportdata *ppd; - int pidx; - - if (dd->stats_timer.function) - timer_delete_sync(&dd->stats_timer); - if (dd->intrchk_timer.function) - timer_delete_sync(&dd->intrchk_timer); - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - if (ppd->hol_timer.function) - timer_delete_sync(&ppd->hol_timer); - if (ppd->led_override_timer.function) { - timer_delete_sync(&ppd->led_override_timer); - atomic_set(&ppd->led_override_timer_active, 0); - } - if (ppd->symerr_clear_timer.function) - timer_delete_sync(&ppd->symerr_clear_timer); - } -} - -/** - * qib_shutdown_device - shut down a device - * @dd: the qlogic_ib device - * - * This is called to make the device quiet when we are about to - * unload the driver, and also when the device is administratively - * disabled. It does not free any data structures. - * Everything it does has to be setup again by qib_init(dd, 1) - */ -static void qib_shutdown_device(struct qib_devdata *dd) -{ - struct qib_pportdata *ppd; - unsigned pidx; - - if (dd->flags & QIB_SHUTDOWN) - return; - dd->flags |= QIB_SHUTDOWN; - - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - - spin_lock_irq(&ppd->lflags_lock); - ppd->lflags &= ~(QIBL_LINKDOWN | QIBL_LINKINIT | - QIBL_LINKARMED | QIBL_LINKACTIVE | - QIBL_LINKV); - spin_unlock_irq(&ppd->lflags_lock); - *ppd->statusp &= ~(QIB_STATUS_IB_CONF | QIB_STATUS_IB_READY); - } - dd->flags &= ~QIB_INITTED; - - /* mask interrupts, but not errors */ - dd->f_set_intr_state(dd, 0); - - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - dd->f_rcvctrl(ppd, QIB_RCVCTRL_TAILUPD_DIS | - QIB_RCVCTRL_CTXT_DIS | - QIB_RCVCTRL_INTRAVAIL_DIS | - QIB_RCVCTRL_PKEY_ENB, -1); - /* - * Gracefully stop all sends allowing any in progress to - * trickle out first. - */ - dd->f_sendctrl(ppd, QIB_SENDCTRL_CLEAR); - } - - /* - * Enough for anything that's going to trickle out to have actually - * done so. - */ - udelay(20); - - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - ppd = dd->pport + pidx; - dd->f_setextled(ppd, 0); /* make sure LEDs are off */ - - if (dd->flags & QIB_HAS_SEND_DMA) - qib_teardown_sdma(ppd); - - dd->f_sendctrl(ppd, QIB_SENDCTRL_AVAIL_DIS | - QIB_SENDCTRL_SEND_DIS); - /* - * Clear SerdesEnable. - * We can't count on interrupts since we are stopping. - */ - dd->f_quiet_serdes(ppd); - - if (ppd->qib_wq) { - destroy_workqueue(ppd->qib_wq); - ppd->qib_wq = NULL; - } - qib_free_pportdata(ppd); - } - -} - -/** - * qib_free_ctxtdata - free a context's allocated data - * @dd: the qlogic_ib device - * @rcd: the ctxtdata structure - * - * free up any allocated data for a context - * This should not touch anything that would affect a simultaneous - * re-allocation of context data, because it is called after qib_mutex - * is released (and can be called from reinit as well). - * It should never change any chip state, or global driver state. - */ -void qib_free_ctxtdata(struct qib_devdata *dd, struct qib_ctxtdata *rcd) -{ - if (!rcd) - return; - - if (rcd->rcvhdrq) { - dma_free_coherent(&dd->pcidev->dev, rcd->rcvhdrq_size, - rcd->rcvhdrq, rcd->rcvhdrq_phys); - rcd->rcvhdrq = NULL; - if (rcd->rcvhdrtail_kvaddr) { - dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, - rcd->rcvhdrtail_kvaddr, - rcd->rcvhdrqtailaddr_phys); - rcd->rcvhdrtail_kvaddr = NULL; - } - } - if (rcd->rcvegrbuf) { - unsigned e; - - for (e = 0; e < rcd->rcvegrbuf_chunks; e++) { - void *base = rcd->rcvegrbuf[e]; - size_t size = rcd->rcvegrbuf_size; - - dma_free_coherent(&dd->pcidev->dev, size, - base, rcd->rcvegrbuf_phys[e]); - } - kfree(rcd->rcvegrbuf); - rcd->rcvegrbuf = NULL; - kfree(rcd->rcvegrbuf_phys); - rcd->rcvegrbuf_phys = NULL; - rcd->rcvegrbuf_chunks = 0; - } - - kfree(rcd->tid_pg_list); - vfree(rcd->user_event_mask); - vfree(rcd->subctxt_uregbase); - vfree(rcd->subctxt_rcvegrbuf); - vfree(rcd->subctxt_rcvhdr_base); -#ifdef CONFIG_DEBUG_FS - kfree(rcd->opstats); - rcd->opstats = NULL; -#endif - kfree(rcd); -} - -/* - * Perform a PIO buffer bandwidth write test, to verify proper system - * configuration. Even when all the setup calls work, occasionally - * BIOS or other issues can prevent write combining from working, or - * can cause other bandwidth problems to the chip. - * - * This test simply writes the same buffer over and over again, and - * measures close to the peak bandwidth to the chip (not testing - * data bandwidth to the wire). On chips that use an address-based - * trigger to send packets to the wire, this is easy. On chips that - * use a count to trigger, we want to make sure that the packet doesn't - * go out on the wire, or trigger flow control checks. - */ -static void qib_verify_pioperf(struct qib_devdata *dd) -{ - u32 pbnum, cnt, lcnt; - u32 __iomem *piobuf; - u32 *addr; - u64 msecs, emsecs; - - piobuf = dd->f_getsendbuf(dd->pport, 0ULL, &pbnum); - if (!piobuf) { - qib_devinfo(dd->pcidev, - "No PIObufs for checking perf, skipping\n"); - return; - } - - /* - * Enough to give us a reasonable test, less than piobuf size, and - * likely multiple of store buffer length. - */ - cnt = 1024; - - addr = vmalloc(cnt); - if (!addr) - goto done; - - preempt_disable(); /* we want reasonably accurate elapsed time */ - msecs = 1 + jiffies_to_msecs(jiffies); - for (lcnt = 0; lcnt < 10000U; lcnt++) { - /* wait until we cross msec boundary */ - if (jiffies_to_msecs(jiffies) >= msecs) - break; - udelay(1); - } - - dd->f_set_armlaunch(dd, 0); - - /* - * length 0, no dwords actually sent - */ - writeq(0, piobuf); - qib_flush_wc(); - - /* - * This is only roughly accurate, since even with preempt we - * still take interrupts that could take a while. Running for - * >= 5 msec seems to get us "close enough" to accurate values. - */ - msecs = jiffies_to_msecs(jiffies); - for (emsecs = lcnt = 0; emsecs <= 5UL; lcnt++) { - qib_pio_copy(piobuf + 64, addr, cnt >> 2); - emsecs = jiffies_to_msecs(jiffies) - msecs; - } - - /* 1 GiB/sec, slightly over IB SDR line rate */ - if (lcnt < (emsecs * 1024U)) - qib_dev_err(dd, - "Performance problem: bandwidth to PIO buffers is only %u MiB/sec\n", - lcnt / (u32) emsecs); - - preempt_enable(); - - vfree(addr); - -done: - /* disarm piobuf, so it's available again */ - dd->f_sendctrl(dd->pport, QIB_SENDCTRL_DISARM_BUF(pbnum)); - qib_sendbuf_done(dd, pbnum); - dd->f_set_armlaunch(dd, 1); -} - -void qib_free_devdata(struct qib_devdata *dd) -{ - unsigned long flags; - - xa_lock_irqsave(&qib_dev_table, flags); - __xa_erase(&qib_dev_table, dd->unit); - xa_unlock_irqrestore(&qib_dev_table, flags); - -#ifdef CONFIG_DEBUG_FS - qib_dbg_ibdev_exit(&dd->verbs_dev); -#endif - free_percpu(dd->int_counter); - rvt_dealloc_device(&dd->verbs_dev.rdi); -} - -u64 qib_int_counter(struct qib_devdata *dd) -{ - int cpu; - u64 int_counter = 0; - - for_each_possible_cpu(cpu) - int_counter += *per_cpu_ptr(dd->int_counter, cpu); - return int_counter; -} - -u64 qib_sps_ints(void) -{ - unsigned long index, flags; - struct qib_devdata *dd; - u64 sps_ints = 0; - - xa_lock_irqsave(&qib_dev_table, flags); - xa_for_each(&qib_dev_table, index, dd) { - sps_ints += qib_int_counter(dd); - } - xa_unlock_irqrestore(&qib_dev_table, flags); - return sps_ints; -} - -/* - * Allocate our primary per-unit data structure. Must be done via verbs - * allocator, because the verbs cleanup process both does cleanup and - * free of the data structure. - * "extra" is for chip-specific data. - */ -struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra) -{ - struct qib_devdata *dd; - int ret, nports; - - /* extra is * number of ports */ - nports = extra / sizeof(struct qib_pportdata); - dd = (struct qib_devdata *)rvt_alloc_device(sizeof(*dd) + extra, - nports); - if (!dd) - return ERR_PTR(-ENOMEM); - - ret = xa_alloc_irq(&qib_dev_table, &dd->unit, dd, xa_limit_32b, - GFP_KERNEL); - if (ret < 0) { - qib_early_err(&pdev->dev, - "Could not allocate unit ID: error %d\n", -ret); - goto bail; - } - rvt_set_ibdev_name(&dd->verbs_dev.rdi, "%s%d", "qib", dd->unit); - - dd->int_counter = alloc_percpu(u64); - if (!dd->int_counter) { - ret = -ENOMEM; - qib_early_err(&pdev->dev, - "Could not allocate per-cpu int_counter\n"); - goto bail; - } - - if (!qib_cpulist_count) { - u32 count = num_online_cpus(); - - qib_cpulist = bitmap_zalloc(count, GFP_KERNEL); - if (qib_cpulist) - qib_cpulist_count = count; - } -#ifdef CONFIG_DEBUG_FS - qib_dbg_ibdev_init(&dd->verbs_dev); -#endif - return dd; -bail: - if (!list_empty(&dd->list)) - list_del_init(&dd->list); - rvt_dealloc_device(&dd->verbs_dev.rdi); - return ERR_PTR(ret); -} - -/* - * Called from freeze mode handlers, and from PCI error - * reporting code. Should be paranoid about state of - * system and data structures. - */ -void qib_disable_after_error(struct qib_devdata *dd) -{ - if (dd->flags & QIB_INITTED) { - u32 pidx; - - dd->flags &= ~QIB_INITTED; - if (dd->pport) - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - struct qib_pportdata *ppd; - - ppd = dd->pport + pidx; - if (dd->flags & QIB_PRESENT) { - qib_set_linkstate(ppd, - QIB_IB_LINKDOWN_DISABLE); - dd->f_setextled(ppd, 0); - } - *ppd->statusp &= ~QIB_STATUS_IB_READY; - } - } - - /* - * Mark as having had an error for driver, and also - * for /sys and status word mapped to user programs. - * This marks unit as not usable, until reset. - */ - if (dd->devstatusp) - *dd->devstatusp |= QIB_STATUS_HWERROR; -} - -static void qib_remove_one(struct pci_dev *); -static int qib_init_one(struct pci_dev *, const struct pci_device_id *); -static void qib_shutdown_one(struct pci_dev *); - -#define DRIVER_LOAD_MSG "Intel " QIB_DRV_NAME " loaded: " -#define PFX QIB_DRV_NAME ": " - -static const struct pci_device_id qib_pci_tbl[] = { - { PCI_DEVICE(PCI_VENDOR_ID_PATHSCALE, PCI_DEVICE_ID_QLOGIC_IB_6120) }, - { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_IB_7220) }, - { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_IB_7322) }, - { 0, } -}; - -MODULE_DEVICE_TABLE(pci, qib_pci_tbl); - -static struct pci_driver qib_driver = { - .name = QIB_DRV_NAME, - .probe = qib_init_one, - .remove = qib_remove_one, - .shutdown = qib_shutdown_one, - .id_table = qib_pci_tbl, - .err_handler = &qib_pci_err_handler, -}; - -#ifdef CONFIG_INFINIBAND_QIB_DCA - -static int qib_notify_dca(struct notifier_block *, unsigned long, void *); -static struct notifier_block dca_notifier = { - .notifier_call = qib_notify_dca, - .next = NULL, - .priority = 0 -}; - -static int qib_notify_dca_device(struct device *device, void *data) -{ - struct qib_devdata *dd = dev_get_drvdata(device); - unsigned long event = *(unsigned long *)data; - - return dd->f_notify_dca(dd, event); -} - -static int qib_notify_dca(struct notifier_block *nb, unsigned long event, - void *p) -{ - int rval; - - rval = driver_for_each_device(&qib_driver.driver, NULL, - &event, qib_notify_dca_device); - return rval ? NOTIFY_BAD : NOTIFY_DONE; -} - -#endif - -/* - * Do all the generic driver unit- and chip-independent memory - * allocation and initialization. - */ -static int __init qib_ib_init(void) -{ - int ret; - - ret = qib_dev_init(); - if (ret) - goto bail; - - /* - * These must be called before the driver is registered with - * the PCI subsystem. - */ -#ifdef CONFIG_INFINIBAND_QIB_DCA - dca_register_notify(&dca_notifier); -#endif -#ifdef CONFIG_DEBUG_FS - qib_dbg_init(); -#endif - ret = pci_register_driver(&qib_driver); - if (ret < 0) { - pr_err("Unable to register driver: error %d\n", -ret); - goto bail_dev; - } - - /* not fatal if it doesn't work */ - if (qib_init_qibfs()) - pr_err("Unable to register ipathfs\n"); - goto bail; /* all OK */ - -bail_dev: -#ifdef CONFIG_INFINIBAND_QIB_DCA - dca_unregister_notify(&dca_notifier); -#endif -#ifdef CONFIG_DEBUG_FS - qib_dbg_exit(); -#endif - qib_dev_cleanup(); -bail: - return ret; -} - -module_init(qib_ib_init); - -/* - * Do the non-unit driver cleanup, memory free, etc. at unload. - */ -static void __exit qib_ib_cleanup(void) -{ - int ret; - - ret = qib_exit_qibfs(); - if (ret) - pr_err( - "Unable to cleanup counter filesystem: error %d\n", - -ret); - -#ifdef CONFIG_INFINIBAND_QIB_DCA - dca_unregister_notify(&dca_notifier); -#endif - pci_unregister_driver(&qib_driver); -#ifdef CONFIG_DEBUG_FS - qib_dbg_exit(); -#endif - - qib_cpulist_count = 0; - bitmap_free(qib_cpulist); - - WARN_ON(!xa_empty(&qib_dev_table)); - qib_dev_cleanup(); -} - -module_exit(qib_ib_cleanup); - -/* this can only be called after a successful initialization */ -static void cleanup_device_data(struct qib_devdata *dd) -{ - int ctxt; - int pidx; - struct qib_ctxtdata **tmp; - unsigned long flags; - - /* users can't do anything more with chip */ - for (pidx = 0; pidx < dd->num_pports; ++pidx) { - if (dd->pport[pidx].statusp) - *dd->pport[pidx].statusp &= ~QIB_STATUS_CHIP_PRESENT; - - spin_lock(&dd->pport[pidx].cc_shadow_lock); - - kfree(dd->pport[pidx].congestion_entries); - dd->pport[pidx].congestion_entries = NULL; - kfree(dd->pport[pidx].ccti_entries); - dd->pport[pidx].ccti_entries = NULL; - kfree(dd->pport[pidx].ccti_entries_shadow); - dd->pport[pidx].ccti_entries_shadow = NULL; - kfree(dd->pport[pidx].congestion_entries_shadow); - dd->pport[pidx].congestion_entries_shadow = NULL; - - spin_unlock(&dd->pport[pidx].cc_shadow_lock); - } - - qib_disable_wc(dd); - - if (dd->pioavailregs_dma) { - dma_free_coherent(&dd->pcidev->dev, PAGE_SIZE, - (void *) dd->pioavailregs_dma, - dd->pioavailregs_phys); - dd->pioavailregs_dma = NULL; - } - - if (dd->pageshadow) { - struct page **tmpp = dd->pageshadow; - dma_addr_t *tmpd = dd->physshadow; - int i; - - for (ctxt = 0; ctxt < dd->cfgctxts; ctxt++) { - int ctxt_tidbase = ctxt * dd->rcvtidcnt; - int maxtid = ctxt_tidbase + dd->rcvtidcnt; - - for (i = ctxt_tidbase; i < maxtid; i++) { - if (!tmpp[i]) - continue; - dma_unmap_page(&dd->pcidev->dev, tmpd[i], - PAGE_SIZE, DMA_FROM_DEVICE); - qib_release_user_pages(&tmpp[i], 1); - tmpp[i] = NULL; - } - } - - dd->pageshadow = NULL; - vfree(tmpp); - dd->physshadow = NULL; - vfree(tmpd); - } - - /* - * Free any resources still in use (usually just kernel contexts) - * at unload; we do for ctxtcnt, because that's what we allocate. - * We acquire lock to be really paranoid that rcd isn't being - * accessed from some interrupt-related code (that should not happen, - * but best to be sure). - */ - spin_lock_irqsave(&dd->uctxt_lock, flags); - tmp = dd->rcd; - dd->rcd = NULL; - spin_unlock_irqrestore(&dd->uctxt_lock, flags); - for (ctxt = 0; tmp && ctxt < dd->ctxtcnt; ctxt++) { - struct qib_ctxtdata *rcd = tmp[ctxt]; - - tmp[ctxt] = NULL; /* debugging paranoia */ - qib_free_ctxtdata(dd, rcd); - } - kfree(tmp); -} - -/* - * Clean up on unit shutdown, or error during unit load after - * successful initialization. - */ -static void qib_postinit_cleanup(struct qib_devdata *dd) -{ - /* - * Clean up chip-specific stuff. - * We check for NULL here, because it's outside - * the kregbase check, and we need to call it - * after the free_irq. Thus it's possible that - * the function pointers were never initialized. - */ - if (dd->f_cleanup) - dd->f_cleanup(dd); - - qib_pcie_ddcleanup(dd); - - cleanup_device_data(dd); - - qib_free_devdata(dd); -} - -static int qib_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - int ret, j, pidx, initfail; - struct qib_devdata *dd = NULL; - - ret = qib_pcie_init(pdev, ent); - if (ret) - goto bail; - - /* - * Do device-specific initialiation, function table setup, dd - * allocation, etc. - */ - switch (ent->device) { - case PCI_DEVICE_ID_QLOGIC_IB_6120: -#ifdef CONFIG_PCI_MSI - dd = qib_init_iba6120_funcs(pdev, ent); -#else - qib_early_err(&pdev->dev, - "Intel PCIE device 0x%x cannot work if CONFIG_PCI_MSI is not enabled\n", - ent->device); - dd = ERR_PTR(-ENODEV); -#endif - break; - - case PCI_DEVICE_ID_QLOGIC_IB_7220: - dd = qib_init_iba7220_funcs(pdev, ent); - break; - - case PCI_DEVICE_ID_QLOGIC_IB_7322: - dd = qib_init_iba7322_funcs(pdev, ent); - break; - - default: - qib_early_err(&pdev->dev, - "Failing on unknown Intel deviceid 0x%x\n", - ent->device); - ret = -ENODEV; - } - - if (IS_ERR(dd)) - ret = PTR_ERR(dd); - if (ret) - goto bail; /* error already printed */ - - ret = qib_create_workqueues(dd); - if (ret) - goto bail; - - /* do the generic initialization */ - initfail = qib_init(dd, 0); - - ret = qib_register_ib_device(dd); - - /* - * Now ready for use. this should be cleared whenever we - * detect a reset, or initiate one. If earlier failure, - * we still create devices, so diags, etc. can be used - * to determine cause of problem. - */ - if (!qib_mini_init && !initfail && !ret) - dd->flags |= QIB_INITTED; - - j = qib_device_create(dd); - if (j) - qib_dev_err(dd, "Failed to create /dev devices: %d\n", -j); - j = qibfs_add(dd); - if (j) - qib_dev_err(dd, "Failed filesystem setup for counters: %d\n", - -j); - - if (qib_mini_init || initfail || ret) { - qib_stop_timers(dd); - flush_workqueue(ib_wq); - for (pidx = 0; pidx < dd->num_pports; ++pidx) - dd->f_quiet_serdes(dd->pport + pidx); - if (qib_mini_init) - goto bail; - if (!j) { - (void) qibfs_remove(dd); - qib_device_remove(dd); - } - if (!ret) - qib_unregister_ib_device(dd); - qib_postinit_cleanup(dd); - if (initfail) - ret = initfail; - goto bail; - } - - ret = qib_enable_wc(dd); - if (ret) { - qib_dev_err(dd, - "Write combining not enabled (err %d): performance may be poor\n", - -ret); - ret = 0; - } - - qib_verify_pioperf(dd); -bail: - return ret; -} - -static void qib_remove_one(struct pci_dev *pdev) -{ - struct qib_devdata *dd = pci_get_drvdata(pdev); - int ret; - - /* unregister from IB core */ - qib_unregister_ib_device(dd); - - /* - * Disable the IB link, disable interrupts on the device, - * clear dma engines, etc. - */ - if (!qib_mini_init) - qib_shutdown_device(dd); - - qib_stop_timers(dd); - - /* wait until all of our (qsfp) queue_work() calls complete */ - flush_workqueue(ib_wq); - - ret = qibfs_remove(dd); - if (ret) - qib_dev_err(dd, "Failed counters filesystem cleanup: %d\n", - -ret); - - qib_device_remove(dd); - - qib_postinit_cleanup(dd); -} - -static void qib_shutdown_one(struct pci_dev *pdev) -{ - struct qib_devdata *dd = pci_get_drvdata(pdev); - - qib_shutdown_device(dd); -} - -/** - * qib_create_rcvhdrq - create a receive header queue - * @dd: the qlogic_ib device - * @rcd: the context data - * - * This must be contiguous memory (from an i/o perspective), and must be - * DMA'able (which means for some systems, it will go through an IOMMU, - * or be forced into a low address range). - */ -int qib_create_rcvhdrq(struct qib_devdata *dd, struct qib_ctxtdata *rcd) -{ - unsigned amt; - int old_node_id; - - if (!rcd->rcvhdrq) { - dma_addr_t phys_hdrqtail; - - amt = ALIGN(dd->rcvhdrcnt * dd->rcvhdrentsize * - sizeof(u32), PAGE_SIZE); - - old_node_id = dev_to_node(&dd->pcidev->dev); - set_dev_node(&dd->pcidev->dev, rcd->node_id); - rcd->rcvhdrq = dma_alloc_coherent(&dd->pcidev->dev, amt, - &rcd->rcvhdrq_phys, GFP_KERNEL); - set_dev_node(&dd->pcidev->dev, old_node_id); - - if (!rcd->rcvhdrq) { - qib_dev_err(dd, - "attempt to allocate %d bytes for ctxt %u rcvhdrq failed\n", - amt, rcd->ctxt); - goto bail; - } - - if (rcd->ctxt >= dd->first_user_ctxt) { - rcd->user_event_mask = vmalloc_user(PAGE_SIZE); - if (!rcd->user_event_mask) - goto bail_free_hdrq; - } - - if (!(dd->flags & QIB_NODMA_RTAIL)) { - set_dev_node(&dd->pcidev->dev, rcd->node_id); - rcd->rcvhdrtail_kvaddr = dma_alloc_coherent( - &dd->pcidev->dev, PAGE_SIZE, &phys_hdrqtail, - GFP_KERNEL); - set_dev_node(&dd->pcidev->dev, old_node_id); - if (!rcd->rcvhdrtail_kvaddr) - goto bail_free; - rcd->rcvhdrqtailaddr_phys = phys_hdrqtail; - } - - rcd->rcvhdrq_size = amt; - } - - /* clear for security and sanity on each use */ - memset(rcd->rcvhdrq, 0, rcd->rcvhdrq_size); - if (rcd->rcvhdrtail_kvaddr) - memset(rcd->rcvhdrtail_kvaddr, 0, PAGE_SIZE); - return 0; - -bail_free: - qib_dev_err(dd, - "attempt to allocate 1 page for ctxt %u rcvhdrqtailaddr failed\n", - rcd->ctxt); - vfree(rcd->user_event_mask); - rcd->user_event_mask = NULL; -bail_free_hdrq: - dma_free_coherent(&dd->pcidev->dev, amt, rcd->rcvhdrq, - rcd->rcvhdrq_phys); - rcd->rcvhdrq = NULL; -bail: - return -ENOMEM; -} - -/** - * qib_setup_eagerbufs - allocate eager buffers, both kernel and user contexts. - * @rcd: the context we are setting up. - * - * Allocate the eager TID buffers and program them into hip. - * They are no longer completely contiguous, we do multiple allocation - * calls. Otherwise we get the OOM code involved, by asking for too - * much per call, with disastrous results on some kernels. - */ -int qib_setup_eagerbufs(struct qib_ctxtdata *rcd) -{ - struct qib_devdata *dd = rcd->dd; - unsigned e, egrcnt, egrperchunk, chunk, egrsize, egroff; - size_t size; - int old_node_id; - - egrcnt = rcd->rcvegrcnt; - egroff = rcd->rcvegr_tid_base; - egrsize = dd->rcvegrbufsize; - - chunk = rcd->rcvegrbuf_chunks; - egrperchunk = rcd->rcvegrbufs_perchunk; - size = rcd->rcvegrbuf_size; - if (!rcd->rcvegrbuf) { - rcd->rcvegrbuf = - kcalloc_node(chunk, sizeof(rcd->rcvegrbuf[0]), - GFP_KERNEL, rcd->node_id); - if (!rcd->rcvegrbuf) - goto bail; - } - if (!rcd->rcvegrbuf_phys) { - rcd->rcvegrbuf_phys = - kmalloc_array_node(chunk, - sizeof(rcd->rcvegrbuf_phys[0]), - GFP_KERNEL, rcd->node_id); - if (!rcd->rcvegrbuf_phys) - goto bail_rcvegrbuf; - } - for (e = 0; e < rcd->rcvegrbuf_chunks; e++) { - if (rcd->rcvegrbuf[e]) - continue; - - old_node_id = dev_to_node(&dd->pcidev->dev); - set_dev_node(&dd->pcidev->dev, rcd->node_id); - rcd->rcvegrbuf[e] = - dma_alloc_coherent(&dd->pcidev->dev, size, - &rcd->rcvegrbuf_phys[e], - GFP_KERNEL); - set_dev_node(&dd->pcidev->dev, old_node_id); - if (!rcd->rcvegrbuf[e]) - goto bail_rcvegrbuf_phys; - } - - rcd->rcvegr_phys = rcd->rcvegrbuf_phys[0]; - - for (e = chunk = 0; chunk < rcd->rcvegrbuf_chunks; chunk++) { - dma_addr_t pa = rcd->rcvegrbuf_phys[chunk]; - unsigned i; - - /* clear for security and sanity on each use */ - memset(rcd->rcvegrbuf[chunk], 0, size); - - for (i = 0; e < egrcnt && i < egrperchunk; e++, i++) { - dd->f_put_tid(dd, e + egroff + - (u64 __iomem *) - ((char __iomem *) - dd->kregbase + - dd->rcvegrbase), - RCVHQ_RCV_TYPE_EAGER, pa); - pa += egrsize; - } - cond_resched(); /* don't hog the cpu */ - } - - return 0; - -bail_rcvegrbuf_phys: - for (e = 0; e < rcd->rcvegrbuf_chunks && rcd->rcvegrbuf[e]; e++) - dma_free_coherent(&dd->pcidev->dev, size, - rcd->rcvegrbuf[e], rcd->rcvegrbuf_phys[e]); - kfree(rcd->rcvegrbuf_phys); - rcd->rcvegrbuf_phys = NULL; -bail_rcvegrbuf: - kfree(rcd->rcvegrbuf); - rcd->rcvegrbuf = NULL; -bail: - return -ENOMEM; -} - -/* - * Note: Changes to this routine should be mirrored - * for the diagnostics routine qib_remap_ioaddr32(). - * There is also related code for VL15 buffers in qib_init_7322_variables(). - * The teardown code that unmaps is in qib_pcie_ddcleanup() - */ -int init_chip_wc_pat(struct qib_devdata *dd, u32 vl15buflen) -{ - u64 __iomem *qib_kregbase = NULL; - void __iomem *qib_piobase = NULL; - u64 __iomem *qib_userbase = NULL; - u64 qib_kreglen; - u64 qib_pio2koffset = dd->piobufbase & 0xffffffff; - u64 qib_pio4koffset = dd->piobufbase >> 32; - u64 qib_pio2klen = dd->piobcnt2k * dd->palign; - u64 qib_pio4klen = dd->piobcnt4k * dd->align4k; - u64 qib_physaddr = dd->physaddr; - u64 qib_piolen; - u64 qib_userlen = 0; - - /* - * Free the old mapping because the kernel will try to reuse the - * old mapping and not create a new mapping with the - * write combining attribute. - */ - iounmap(dd->kregbase); - dd->kregbase = NULL; - - /* - * Assumes chip address space looks like: - * - kregs + sregs + cregs + uregs (in any order) - * - piobufs (2K and 4K bufs in either order) - * or: - * - kregs + sregs + cregs (in any order) - * - piobufs (2K and 4K bufs in either order) - * - uregs - */ - if (dd->piobcnt4k == 0) { - qib_kreglen = qib_pio2koffset; - qib_piolen = qib_pio2klen; - } else if (qib_pio2koffset < qib_pio4koffset) { - qib_kreglen = qib_pio2koffset; - qib_piolen = qib_pio4koffset + qib_pio4klen - qib_kreglen; - } else { - qib_kreglen = qib_pio4koffset; - qib_piolen = qib_pio2koffset + qib_pio2klen - qib_kreglen; - } - qib_piolen += vl15buflen; - /* Map just the configured ports (not all hw ports) */ - if (dd->uregbase > qib_kreglen) - qib_userlen = dd->ureg_align * dd->cfgctxts; - - /* Sanity checks passed, now create the new mappings */ - qib_kregbase = ioremap(qib_physaddr, qib_kreglen); - if (!qib_kregbase) - goto bail; - - qib_piobase = ioremap_wc(qib_physaddr + qib_kreglen, qib_piolen); - if (!qib_piobase) - goto bail_kregbase; - - if (qib_userlen) { - qib_userbase = ioremap(qib_physaddr + dd->uregbase, - qib_userlen); - if (!qib_userbase) - goto bail_piobase; - } - - dd->kregbase = qib_kregbase; - dd->kregend = (u64 __iomem *) - ((char __iomem *) qib_kregbase + qib_kreglen); - dd->piobase = qib_piobase; - dd->pio2kbase = (void __iomem *) - (((char __iomem *) dd->piobase) + - qib_pio2koffset - qib_kreglen); - if (dd->piobcnt4k) - dd->pio4kbase = (void __iomem *) - (((char __iomem *) dd->piobase) + - qib_pio4koffset - qib_kreglen); - if (qib_userlen) - /* ureg will now be accessed relative to dd->userbase */ - dd->userbase = qib_userbase; - return 0; - -bail_piobase: - iounmap(qib_piobase); -bail_kregbase: - iounmap(qib_kregbase); -bail: - return -ENOMEM; -} |