Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
198
arch/ia64/sn/kernel/bte_error.c
Normal file
198
arch/ia64/sn/kernel/bte_error.c
Normal file
@@ -0,0 +1,198 @@
|
||||
/*
|
||||
* 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) 2000-2004 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.
|
||||
*/
|
||||
|
||||
void bte_error_handler(unsigned long);
|
||||
|
||||
/*
|
||||
* Wait until all BTE related CRBs are completed
|
||||
* and then reset the interfaces.
|
||||
*/
|
||||
void bte_error_handler(unsigned long _nodepda)
|
||||
{
|
||||
struct nodepda_s *err_nodepda = (struct nodepda_s *)_nodepda;
|
||||
spinlock_t *recovery_lock = &err_nodepda->bte_recovery_lock;
|
||||
struct timer_list *recovery_timer = &err_nodepda->bte_recovery_timer;
|
||||
nasid_t nasid;
|
||||
int i;
|
||||
int valid_crbs;
|
||||
unsigned long irq_flags;
|
||||
volatile u64 *notify;
|
||||
bte_result_t bh_error;
|
||||
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(("bte_error_handler(%p) - %d\n", err_nodepda,
|
||||
smp_processor_id()));
|
||||
|
||||
spin_lock_irqsave(recovery_lock, irq_flags);
|
||||
|
||||
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()));
|
||||
spin_unlock_irqrestore(recovery_lock, irq_flags);
|
||||
return;
|
||||
}
|
||||
/*
|
||||
* 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;
|
||||
}
|
||||
|
||||
/* 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, HZ * 5);
|
||||
BTE_PRINTK(("eh:%p:%d Marked Giving up\n", err_nodepda,
|
||||
smp_processor_id()));
|
||||
spin_unlock_irqrestore(recovery_lock, irq_flags);
|
||||
return;
|
||||
}
|
||||
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, HZ * 5);
|
||||
BTE_PRINTK(("eh:%p:%d Valid %d, Giving up\n",
|
||||
err_nodepda, smp_processor_id(),
|
||||
i));
|
||||
spin_unlock_irqrestore(recovery_lock,
|
||||
irq_flags);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
BTE_PRINTK(("eh:%p:%d Cleaning up\n", err_nodepda, smp_processor_id()));
|
||||
/* Reenable 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);
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
del_timer(recovery_timer);
|
||||
|
||||
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 excercising 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((unsigned long) NODEPDA(cnode));
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user