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Diffstat (limited to 'arch/ia64/sn/kernel/bte_error.c')
| -rw-r--r-- | arch/ia64/sn/kernel/bte_error.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/arch/ia64/sn/kernel/bte_error.c b/arch/ia64/sn/kernel/bte_error.c deleted file mode 100644 index d92786c09b34..000000000000 --- a/arch/ia64/sn/kernel/bte_error.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (c) 2000-2007 Silicon Graphics, Inc. All Rights Reserved. - */ - -#include <linux/types.h> -#include <asm/sn/sn_sal.h> -#include "ioerror.h" -#include <asm/sn/addrs.h> -#include <asm/sn/shubio.h> -#include <asm/sn/geo.h> -#include "xtalk/xwidgetdev.h" -#include "xtalk/hubdev.h" -#include <asm/sn/bte.h> -#include <asm/param.h> - -/* - * Bte error handling is done in two parts. The first captures - * any crb related errors. Since there can be multiple crbs per - * interface and multiple interfaces active, we need to wait until - * all active crbs are completed. This is the first job of the - * second part error handler. When all bte related CRBs are cleanly - * completed, it resets the interfaces and gets them ready for new - * transfers to be queued. - */ - -/* - * Wait until all BTE related CRBs are completed - * and then reset the interfaces. - */ -static int shub1_bte_error_handler(struct nodepda_s *err_nodepda) -{ - struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer; - nasid_t nasid; - int i; - int valid_crbs; - ii_imem_u_t imem; /* II IMEM Register */ - ii_icrb0_d_u_t icrbd; /* II CRB Register D */ - ii_ibcr_u_t ibcr; - ii_icmr_u_t icmr; - ii_ieclr_u_t ieclr; - - BTE_PRINTK(("shub1_bte_error_handler(%p) - %d\n", err_nodepda, - smp_processor_id())); - - if ((err_nodepda->bte_if[0].bh_error == BTE_SUCCESS) && - (err_nodepda->bte_if[1].bh_error == BTE_SUCCESS)) { - BTE_PRINTK(("eh:%p:%d Nothing to do.\n", err_nodepda, - smp_processor_id())); - return 1; - } - - /* Determine information about our hub */ - nasid = cnodeid_to_nasid(err_nodepda->bte_if[0].bte_cnode); - - /* - * A BTE transfer can use multiple CRBs. We need to make sure - * that all the BTE CRBs are complete (or timed out) before - * attempting to clean up the error. Resetting the BTE while - * there are still BTE CRBs active will hang the BTE. - * We should look at all the CRBs to see if they are allocated - * to the BTE and see if they are still active. When none - * are active, we can continue with the cleanup. - * - * We also want to make sure that the local NI port is up. - * When a router resets the NI port can go down, while it - * goes through the LLP handshake, but then comes back up. - */ - icmr.ii_icmr_regval = REMOTE_HUB_L(nasid, IIO_ICMR); - if (icmr.ii_icmr_fld_s.i_crb_mark != 0) { - /* - * There are errors which still need to be cleaned up by - * hubiio_crb_error_handler - */ - mod_timer(recovery_timer, jiffies + (HZ * 5)); - BTE_PRINTK(("eh:%p:%d Marked Giving up\n", err_nodepda, - smp_processor_id())); - return 1; - } - if (icmr.ii_icmr_fld_s.i_crb_vld != 0) { - - valid_crbs = icmr.ii_icmr_fld_s.i_crb_vld; - - for (i = 0; i < IIO_NUM_CRBS; i++) { - if (!((1 << i) & valid_crbs)) { - /* This crb was not marked as valid, ignore */ - continue; - } - icrbd.ii_icrb0_d_regval = - REMOTE_HUB_L(nasid, IIO_ICRB_D(i)); - if (icrbd.d_bteop) { - mod_timer(recovery_timer, jiffies + (HZ * 5)); - BTE_PRINTK(("eh:%p:%d Valid %d, Giving up\n", - err_nodepda, smp_processor_id(), - i)); - return 1; - } - } - } - - BTE_PRINTK(("eh:%p:%d Cleaning up\n", err_nodepda, smp_processor_id())); - /* Re-enable both bte interfaces */ - imem.ii_imem_regval = REMOTE_HUB_L(nasid, IIO_IMEM); - imem.ii_imem_fld_s.i_b0_esd = imem.ii_imem_fld_s.i_b1_esd = 1; - REMOTE_HUB_S(nasid, IIO_IMEM, imem.ii_imem_regval); - - /* Clear BTE0/1 error bits */ - ieclr.ii_ieclr_regval = 0; - if (err_nodepda->bte_if[0].bh_error != BTE_SUCCESS) - ieclr.ii_ieclr_fld_s.i_e_bte_0 = 1; - if (err_nodepda->bte_if[1].bh_error != BTE_SUCCESS) - ieclr.ii_ieclr_fld_s.i_e_bte_1 = 1; - REMOTE_HUB_S(nasid, IIO_IECLR, ieclr.ii_ieclr_regval); - - /* Reinitialize both BTE state machines. */ - ibcr.ii_ibcr_regval = REMOTE_HUB_L(nasid, IIO_IBCR); - ibcr.ii_ibcr_fld_s.i_soft_reset = 1; - REMOTE_HUB_S(nasid, IIO_IBCR, ibcr.ii_ibcr_regval); - - del_timer(recovery_timer); - return 0; -} - -/* - * Wait until all BTE related CRBs are completed - * and then reset the interfaces. - */ -static int shub2_bte_error_handler(struct nodepda_s *err_nodepda) -{ - struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer; - struct bteinfo_s *bte; - nasid_t nasid; - u64 status; - int i; - - nasid = cnodeid_to_nasid(err_nodepda->bte_if[0].bte_cnode); - - /* - * Verify that all the BTEs are complete - */ - for (i = 0; i < BTES_PER_NODE; i++) { - bte = &err_nodepda->bte_if[i]; - status = BTE_LNSTAT_LOAD(bte); - if (status & IBLS_ERROR) { - bte->bh_error = BTE_SHUB2_ERROR(status); - continue; - } - if (!(status & IBLS_BUSY)) - continue; - mod_timer(recovery_timer, jiffies + (HZ * 5)); - BTE_PRINTK(("eh:%p:%d Marked Giving up\n", err_nodepda, - smp_processor_id())); - return 1; - } - if (ia64_sn_bte_recovery(nasid)) - panic("bte_error_handler(): Fatal BTE Error"); - - del_timer(recovery_timer); - return 0; -} - -/* - * Wait until all BTE related CRBs are completed - * and then reset the interfaces. - */ -void bte_error_handler(struct nodepda_s *err_nodepda) -{ - spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock; - int i; - unsigned long irq_flags; - volatile u64 *notify; - bte_result_t bh_error; - - BTE_PRINTK(("bte_error_handler(%p) - %d\n", err_nodepda, - smp_processor_id())); - - spin_lock_irqsave(recovery_lock, irq_flags); - - /* - * Lock all interfaces on this node to prevent new transfers - * from being queued. - */ - for (i = 0; i < BTES_PER_NODE; i++) { - if (err_nodepda->bte_if[i].cleanup_active) { - continue; - } - spin_lock(&err_nodepda->bte_if[i].spinlock); - BTE_PRINTK(("eh:%p:%d locked %d\n", err_nodepda, - smp_processor_id(), i)); - err_nodepda->bte_if[i].cleanup_active = 1; - } - - if (is_shub1()) { - if (shub1_bte_error_handler(err_nodepda)) { - spin_unlock_irqrestore(recovery_lock, irq_flags); - return; - } - } else { - if (shub2_bte_error_handler(err_nodepda)) { - spin_unlock_irqrestore(recovery_lock, irq_flags); - return; - } - } - - for (i = 0; i < BTES_PER_NODE; i++) { - bh_error = err_nodepda->bte_if[i].bh_error; - if (bh_error != BTE_SUCCESS) { - /* There is an error which needs to be notified */ - notify = err_nodepda->bte_if[i].most_rcnt_na; - BTE_PRINTK(("cnode %d bte %d error=0x%lx\n", - err_nodepda->bte_if[i].bte_cnode, - err_nodepda->bte_if[i].bte_num, - IBLS_ERROR | (u64) bh_error)); - *notify = IBLS_ERROR | bh_error; - err_nodepda->bte_if[i].bh_error = BTE_SUCCESS; - } - - err_nodepda->bte_if[i].cleanup_active = 0; - BTE_PRINTK(("eh:%p:%d Unlocked %d\n", err_nodepda, - smp_processor_id(), i)); - spin_unlock(&err_nodepda->bte_if[i].spinlock); - } - - spin_unlock_irqrestore(recovery_lock, irq_flags); -} - -/* - * First part error handler. This is called whenever any error CRB interrupt - * is generated by the II. - */ -void -bte_crb_error_handler(cnodeid_t cnode, int btenum, - int crbnum, ioerror_t * ioe, int bteop) -{ - struct bteinfo_s *bte; - - - bte = &(NODEPDA(cnode)->bte_if[btenum]); - - /* - * The caller has already figured out the error type, we save that - * in the bte handle structure for the thread exercising the - * interface to consume. - */ - bte->bh_error = ioe->ie_errortype + BTEFAIL_OFFSET; - bte->bte_error_count++; - - BTE_PRINTK(("Got an error on cnode %d bte %d: HW error type 0x%x\n", - bte->bte_cnode, bte->bte_num, ioe->ie_errortype)); - bte_error_handler(NODEPDA(cnode)); -} - |