patch-2.4.22 linux-2.4.22/arch/ia64/sn/io/sn1/huberror.c
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- Lines: 229
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.21/arch/ia64/sn/io/sn1/huberror.c
- Orig date:
2002-08-02 17:39:43.000000000 -0700
diff -urN linux-2.4.21/arch/ia64/sn/io/sn1/huberror.c linux-2.4.22/arch/ia64/sn/io/sn1/huberror.c
@@ -1,228 +0,0 @@
-/* $Id: huberror.c,v 1.1 2002/02/28 17:31:25 marcelo Exp $
- *
- * 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) 1992 - 1997, 2000-2002 Silicon Graphics, Inc. All rights reserved.
- */
-
-
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <asm/smp.h>
-#include <asm/sn/sgi.h>
-#include <asm/sn/io.h>
-#include <asm/sn/iograph.h>
-#include <asm/sn/invent.h>
-#include <asm/sn/hcl.h>
-#include <asm/sn/labelcl.h>
-#include <asm/sn/sn_private.h>
-#include <asm/sn/klconfig.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/pci/pciio.h>
-#include <asm/sn/pci/pcibr.h>
-#include <asm/sn/xtalk/xtalk.h>
-#include <asm/sn/pci/pcibr_private.h>
-#include <asm/sn/intr.h>
-
-extern void hubni_eint_init(cnodeid_t cnode);
-extern void hubii_eint_init(cnodeid_t cnode);
-extern void hubii_eint_handler (int irq, void *arg, struct pt_regs *ep);
-extern void snia_error_intr_handler(int irq, void *devid, struct pt_regs *pt_regs);
-
-extern int maxcpus;
-
-#define HUB_ERROR_PERIOD (120 * HZ) /* 2 minutes */
-
-
-void
-hub_error_clear(nasid_t nasid)
-{
- int i;
- hubreg_t idsr;
- int sn;
-
- for(sn=0; sn<NUM_SUBNODES; sn++) {
- REMOTE_HUB_PI_S(nasid, sn, PI_ERR_INT_PEND, -1);
- REMOTE_HUB_PI_S(nasid, sn, PI_ERR_STATUS0_A_CLR, -1);
- REMOTE_HUB_PI_S(nasid, sn, PI_ERR_STATUS0_B_CLR, -1);
- REMOTE_HUB_PI_S(nasid, sn, PI_SPURIOUS_HDR_0, 0);
- REMOTE_HUB_PI_S(nasid, sn, PI_SPURIOUS_HDR_1, 0);
- }
-
- REMOTE_HUB_L(nasid, MD_DIR_ERROR_CLR);
- REMOTE_HUB_L(nasid, MD_MEM_ERROR_CLR);
- REMOTE_HUB_L(nasid, MD_MISC1_ERROR_CLR);
- REMOTE_HUB_L(nasid, MD_PROTOCOL_ERR_CLR);
-
- /*
- * Make sure spurious write response errors are cleared
- * (values are from hub_set_prb())
- */
- for (i = 0; i <= HUB_WIDGET_ID_MAX - HUB_WIDGET_ID_MIN + 1; i++) {
- iprb_t prb;
-
- prb.iprb_regval = REMOTE_HUB_L(nasid, IIO_IOPRB_0 + (i * sizeof(hubreg_t)));
-
- /* Clear out some fields */
- prb.iprb_ovflow = 1;
- prb.iprb_bnakctr = 0;
- prb.iprb_anakctr = 0;
-
- /*
- * PIO reads in fire-and-forget mode on bedrock 1.0 don't
- * frob the credit count properly, making the responses appear
- * spurious. So don't use fire-and-forget mode. Bug 761802.
- */
- prb.iprb_ff = 0; /* disable fire-and-forget mode by default */
-
- prb.iprb_xtalkctr = 3; /* approx. PIO credits for the widget */
-
- REMOTE_HUB_S(nasid, IIO_IOPRB_0 + (i * sizeof(hubreg_t)), prb.iprb_regval);
- }
-
- REMOTE_HUB_S(nasid, IIO_IO_ERR_CLR, -1);
- idsr = REMOTE_HUB_L(nasid, IIO_IIDSR);
- REMOTE_HUB_S(nasid, IIO_IIDSR, (idsr & ~(IIO_IIDSR_SENT_MASK)));
-
- REMOTE_HUB_L(nasid, NI_PORT_ERROR_CLEAR);
- /* No need to clear NI_PORT_HEADER regs; they are continually overwritten*/
-
- REMOTE_HUB_S(nasid, LB_ERROR_MASK_CLR, -1);
- REMOTE_HUB_S(nasid, LB_ERROR_HDR1, 0);
-
- /* Clear XB error regs, in order */
- for (i = 0;
- i <= XB_FIRST_ERROR_CLEAR - XB_POQ0_ERROR_CLEAR;
- i += sizeof(hubreg_t)) {
- REMOTE_HUB_S(nasid, XB_POQ0_ERROR_CLEAR + i, 0);
- }
-}
-
-
-/*
- * Function : hub_error_init
- * Purpose : initialize the error handling requirements for a given hub.
- * Parameters : cnode, the compact nodeid.
- * Assumptions : Called only once per hub, either by a local cpu. Or by a
- * remote cpu, when this hub is headless.(cpuless)
- * Returns : None
- */
-
-void
-hub_error_init(cnodeid_t cnode)
-{
- nasid_t nasid;
-
- nasid = cnodeid_to_nasid(cnode);
- hub_error_clear(nasid);
-
- /*
- * Now setup the hub ii and ni error interrupt handler.
- */
-
- hubii_eint_init(cnode);
- hubni_eint_init(cnode);
-
- return;
-}
-
-/*
- * Function : hubii_eint_init
- * Parameters : cnode
- * Purpose : to initialize the hub iio error interrupt.
- * Assumptions : Called once per hub, by the cpu which will ultimately
- * handle this interrupt.
- * Returns : None.
- */
-
-
-void
-hubii_eint_init(cnodeid_t cnode)
-{
- int bit, rv;
- ii_iidsr_u_t hubio_eint;
- hubinfo_t hinfo;
- cpuid_t intr_cpu;
- devfs_handle_t hub_v;
- ii_ilcsr_u_t ilcsr;
- int bit_pos_to_irq(int bit);
- int synergy_intr_connect(int bit, int cpuid);
-
-
- hub_v = (devfs_handle_t)cnodeid_to_vertex(cnode);
- ASSERT_ALWAYS(hub_v);
- hubinfo_get(hub_v, &hinfo);
-
- ASSERT(hinfo);
- ASSERT(hinfo->h_cnodeid == cnode);
-
- ilcsr.ii_ilcsr_regval = REMOTE_HUB_L(hinfo->h_nasid, IIO_ILCSR);
-
- if ((ilcsr.ii_ilcsr_fld_s.i_llp_stat & 0x2) == 0) {
- /*
- * HUB II link is not up.
- * Just disable LLP, and don't connect any interrupts.
- */
- ilcsr.ii_ilcsr_fld_s.i_llp_en = 0;
- REMOTE_HUB_S(hinfo->h_nasid, IIO_ILCSR, ilcsr.ii_ilcsr_regval);
- return;
- }
- /* Select a possible interrupt target where there is a free interrupt
- * bit and also reserve the interrupt bit for this IO error interrupt
- */
- intr_cpu = intr_heuristic(hub_v,0,INTRCONNECT_ANYBIT,II_ERRORINT,hub_v,
- "HUB IO error interrupt",&bit);
- if (intr_cpu == CPU_NONE) {
- printk("hubii_eint_init: intr_reserve_level failed, cnode %d", cnode);
- return;
- }
-
- rv = intr_connect_level(intr_cpu, bit, 0, NULL);
- synergy_intr_connect(bit, intr_cpu);
- request_irq(bit_pos_to_irq(bit) + (intr_cpu << 8), hubii_eint_handler, 0, "SN hub error", (void *)hub_v);
- ASSERT_ALWAYS(rv >= 0);
- hubio_eint.ii_iidsr_regval = 0;
- hubio_eint.ii_iidsr_fld_s.i_enable = 1;
- hubio_eint.ii_iidsr_fld_s.i_level = bit;/* Take the least significant bits*/
- hubio_eint.ii_iidsr_fld_s.i_node = COMPACT_TO_NASID_NODEID(cnode);
- hubio_eint.ii_iidsr_fld_s.i_pi_id = cpuid_to_subnode(intr_cpu);
- REMOTE_HUB_S(hinfo->h_nasid, IIO_IIDSR, hubio_eint.ii_iidsr_regval);
-
-}
-
-void
-hubni_eint_init(cnodeid_t cnode)
-{
- int intr_bit;
- cpuid_t targ;
-
-
- if ((targ = cnodeid_to_cpuid(cnode)) == CPU_NONE)
- return;
-
- /* The prom chooses which cpu gets these interrupts, but we
- * don't know which one it chose. We will register all of the
- * cpus to be sure. This only costs us an irqaction per cpu.
- */
- for (; targ < CPUS_PER_NODE; targ++) {
- if (!cpu_enabled(targ) ) continue;
- /* connect the INTEND1 bits. */
- for (intr_bit = XB_ERROR; intr_bit <= MSC_PANIC_INTR; intr_bit++) {
- intr_connect_level(targ, intr_bit, II_ERRORINT, NULL);
- }
- request_irq(SGI_HUB_ERROR_IRQ + (targ << 8), snia_error_intr_handler, 0, "SN hub error", NULL);
- /* synergy masks are initialized in the prom to enable all interrupts. */
- /* We'll just leave them that way, here, for these interrupts. */
- }
-}
-
-
-/*ARGSUSED*/
-void
-hubii_eint_handler (int irq, void *arg, struct pt_regs *ep)
-{
-
- panic("Hubii interrupt\n");
-}
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