mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 09:56:55 +07:00
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] run drivers/misc/sgi-xp through scripts/checkpatch.pl [IA64] run rest drivers/misc/sgi-xp through scripts/Lindent [IA64] run some drivers/misc/sgi-xp through scripts/Lindent [IA64] move XP and XPC to drivers/misc/sgi-xp [IA64] minor irq handler cleanups [IA64] simplify notify hooks in mca.c [IA64] do notify DIE_MCA_MONARCH_PROCESS for each monarchs [IA64] disable interrupts on exit of ia64_trace_syscall
This commit is contained in:
Linus Torvalds
commit
aca239b793
@ -266,17 +266,6 @@ config IOSAPIC
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depends on !IA64_HP_SIM
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default y
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config IA64_SGI_SN_XP
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tristate "Support communication between SGI SSIs"
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depends on IA64_GENERIC || IA64_SGI_SN2
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select IA64_UNCACHED_ALLOCATOR
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help
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An SGI machine can be divided into multiple Single System
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Images which act independently of each other and have
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hardware based memory protection from the others. Enabling
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this feature will allow for direct communication between SSIs
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based on a network adapter and DMA messaging.
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config FORCE_MAX_ZONEORDER
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int "MAX_ORDER (11 - 17)" if !HUGETLB_PAGE
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range 11 17 if !HUGETLB_PAGE
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@ -194,8 +194,8 @@ kdump_init_notifier(struct notifier_block *self, unsigned long val, void *data)
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unw_init_running(kdump_cpu_freeze, NULL);
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break;
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case DIE_MCA_MONARCH_LEAVE:
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/* die_register->signr indicate if MCA is recoverable */
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if (kdump_on_fatal_mca && !args->signr) {
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/* *(nd->data) indicate if MCA is recoverable */
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if (kdump_on_fatal_mca && !(*(nd->data))) {
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atomic_set(&kdump_in_progress, 1);
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*(nd->monarch_cpu) = -1;
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machine_kdump_on_init();
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@ -570,6 +570,7 @@ GLOBAL_ENTRY(ia64_trace_syscall)
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br.call.sptk.many rp=syscall_trace_leave // give parent a chance to catch return value
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.ret3:
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(pUStk) cmp.eq.unc p6,p0=r0,r0 // p6 <- pUStk
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(pUStk) rsm psr.i // disable interrupts
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br.cond.sptk .work_pending_syscall_end
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strace_error:
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@ -109,6 +109,20 @@
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# define IA64_MCA_DEBUG(fmt...)
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#endif
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#define NOTIFY_INIT(event, regs, arg, spin) \
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do { \
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if ((notify_die((event), "INIT", (regs), (arg), 0, 0) \
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== NOTIFY_STOP) && ((spin) == 1)) \
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ia64_mca_spin(__func__); \
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} while (0)
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#define NOTIFY_MCA(event, regs, arg, spin) \
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do { \
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if ((notify_die((event), "MCA", (regs), (arg), 0, 0) \
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== NOTIFY_STOP) && ((spin) == 1)) \
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ia64_mca_spin(__func__); \
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} while (0)
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/* Used by mca_asm.S */
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DEFINE_PER_CPU(u64, ia64_mca_data); /* == __per_cpu_mca[smp_processor_id()] */
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DEFINE_PER_CPU(u64, ia64_mca_per_cpu_pte); /* PTE to map per-CPU area */
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@ -766,9 +780,8 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg)
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/* Mask all interrupts */
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local_irq_save(flags);
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if (notify_die(DIE_MCA_RENDZVOUS_ENTER, "MCA", get_irq_regs(),
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(long)&nd, 0, 0) == NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_MCA(DIE_MCA_RENDZVOUS_ENTER, get_irq_regs(), (long)&nd, 1);
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ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_DONE;
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/* Register with the SAL monarch that the slave has
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@ -776,17 +789,13 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg)
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*/
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ia64_sal_mc_rendez();
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if (notify_die(DIE_MCA_RENDZVOUS_PROCESS, "MCA", get_irq_regs(),
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(long)&nd, 0, 0) == NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_MCA(DIE_MCA_RENDZVOUS_PROCESS, get_irq_regs(), (long)&nd, 1);
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/* Wait for the monarch cpu to exit. */
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while (monarch_cpu != -1)
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cpu_relax(); /* spin until monarch leaves */
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if (notify_die(DIE_MCA_RENDZVOUS_LEAVE, "MCA", get_irq_regs(),
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(long)&nd, 0, 0) == NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_MCA(DIE_MCA_RENDZVOUS_LEAVE, get_irq_regs(), (long)&nd, 1);
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ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_NOTDONE;
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/* Enable all interrupts */
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@ -1256,7 +1265,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
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int recover, cpu = smp_processor_id();
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struct task_struct *previous_current;
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struct ia64_mca_notify_die nd =
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{ .sos = sos, .monarch_cpu = &monarch_cpu };
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{ .sos = sos, .monarch_cpu = &monarch_cpu, .data = &recover };
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static atomic_t mca_count;
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static cpumask_t mca_cpu;
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@ -1272,9 +1281,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
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previous_current = ia64_mca_modify_original_stack(regs, sw, sos, "MCA");
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if (notify_die(DIE_MCA_MONARCH_ENTER, "MCA", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_MCA(DIE_MCA_MONARCH_ENTER, regs, (long)&nd, 1);
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ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_CONCURRENT_MCA;
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if (sos->monarch) {
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@ -1288,13 +1295,12 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
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* does not work.
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*/
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ia64_mca_wakeup_all();
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if (notify_die(DIE_MCA_MONARCH_PROCESS, "MCA", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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} else {
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while (cpu_isset(cpu, mca_cpu))
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cpu_relax(); /* spin until monarch wakes us */
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}
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}
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NOTIFY_MCA(DIE_MCA_MONARCH_PROCESS, regs, (long)&nd, 1);
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/* Get the MCA error record and log it */
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ia64_mca_log_sal_error_record(SAL_INFO_TYPE_MCA);
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@ -1320,9 +1326,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
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mca_insert_tr(0x2); /*Reload dynamic itrs*/
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}
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if (notify_die(DIE_MCA_MONARCH_LEAVE, "MCA", regs, (long)&nd, 0, recover)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_MCA(DIE_MCA_MONARCH_LEAVE, regs, (long)&nd, 1);
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if (atomic_dec_return(&mca_count) > 0) {
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int i;
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@ -1643,7 +1647,7 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw,
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struct ia64_mca_notify_die nd =
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{ .sos = sos, .monarch_cpu = &monarch_cpu };
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(void) notify_die(DIE_INIT_ENTER, "INIT", regs, (long)&nd, 0, 0);
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NOTIFY_INIT(DIE_INIT_ENTER, regs, (long)&nd, 0);
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mprintk(KERN_INFO "Entered OS INIT handler. PSP=%lx cpu=%d monarch=%ld\n",
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sos->proc_state_param, cpu, sos->monarch);
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@ -1680,17 +1684,15 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw,
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ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_INIT;
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while (monarch_cpu == -1)
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cpu_relax(); /* spin until monarch enters */
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if (notify_die(DIE_INIT_SLAVE_ENTER, "INIT", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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if (notify_die(DIE_INIT_SLAVE_PROCESS, "INIT", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_INIT(DIE_INIT_SLAVE_ENTER, regs, (long)&nd, 1);
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NOTIFY_INIT(DIE_INIT_SLAVE_PROCESS, regs, (long)&nd, 1);
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while (monarch_cpu != -1)
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cpu_relax(); /* spin until monarch leaves */
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if (notify_die(DIE_INIT_SLAVE_LEAVE, "INIT", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_INIT(DIE_INIT_SLAVE_LEAVE, regs, (long)&nd, 1);
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mprintk("Slave on cpu %d returning to normal service.\n", cpu);
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set_curr_task(cpu, previous_current);
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ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_NOTDONE;
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@ -1699,9 +1701,7 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw,
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}
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monarch_cpu = cpu;
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if (notify_die(DIE_INIT_MONARCH_ENTER, "INIT", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_INIT(DIE_INIT_MONARCH_ENTER, regs, (long)&nd, 1);
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/*
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* Wait for a bit. On some machines (e.g., HP's zx2000 and zx6000, INIT can be
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@ -1716,12 +1716,9 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw,
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* to default_monarch_init_process() above and just print all the
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* tasks.
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*/
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if (notify_die(DIE_INIT_MONARCH_PROCESS, "INIT", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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if (notify_die(DIE_INIT_MONARCH_LEAVE, "INIT", regs, (long)&nd, 0, 0)
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== NOTIFY_STOP)
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ia64_mca_spin(__func__);
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NOTIFY_INIT(DIE_INIT_MONARCH_PROCESS, regs, (long)&nd, 1);
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NOTIFY_INIT(DIE_INIT_MONARCH_LEAVE, regs, (long)&nd, 1);
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mprintk("\nINIT dump complete. Monarch on cpu %d returning to normal service.\n", cpu);
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atomic_dec(&monarchs);
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set_curr_task(cpu, previous_current);
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@ -1953,7 +1950,7 @@ ia64_mca_init(void)
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printk(KERN_INFO "Increasing MCA rendezvous timeout from "
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"%ld to %ld milliseconds\n", timeout, isrv.v0);
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timeout = isrv.v0;
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(void) notify_die(DIE_MCA_NEW_TIMEOUT, "MCA", NULL, timeout, 0, 0);
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NOTIFY_MCA(DIE_MCA_NEW_TIMEOUT, NULL, timeout, 0);
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continue;
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}
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printk(KERN_ERR "Failed to register rendezvous interrupt "
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@ -5511,7 +5511,7 @@ pfm_overflow_handler(struct task_struct *task, pfm_context_t *ctx, u64 pmc0, str
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}
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static int
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pfm_do_interrupt_handler(int irq, void *arg, struct pt_regs *regs)
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pfm_do_interrupt_handler(void *arg, struct pt_regs *regs)
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{
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struct task_struct *task;
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pfm_context_t *ctx;
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@ -5591,7 +5591,7 @@ pfm_interrupt_handler(int irq, void *arg)
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start_cycles = ia64_get_itc();
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ret = pfm_do_interrupt_handler(irq, arg, regs);
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ret = pfm_do_interrupt_handler(arg, regs);
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total_cycles = ia64_get_itc();
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@ -4,7 +4,7 @@
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1999,2001-2006 Silicon Graphics, Inc. All Rights Reserved.
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# Copyright (C) 1999,2001-2006,2008 Silicon Graphics, Inc. All Rights Reserved.
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#
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EXTRA_CFLAGS += -Iarch/ia64/sn/include
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@ -15,9 +15,4 @@ obj-y += setup.o bte.o bte_error.o irq.o mca.o idle.o \
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sn2/
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obj-$(CONFIG_IA64_GENERIC) += machvec.o
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obj-$(CONFIG_SGI_TIOCX) += tiocx.o
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obj-$(CONFIG_IA64_SGI_SN_XP) += xp.o
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xp-y := xp_main.o xp_nofault.o
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obj-$(CONFIG_IA64_SGI_SN_XP) += xpc.o
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xpc-y := xpc_main.o xpc_channel.o xpc_partition.o
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obj-$(CONFIG_IA64_SGI_SN_XP) += xpnet.o
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obj-$(CONFIG_PCI_MSI) += msi_sn.o
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|
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@ -187,8 +187,8 @@ void hub_error_init(struct hubdev_info *hubdev_info)
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{
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|
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if (request_irq(SGI_II_ERROR, hub_eint_handler, IRQF_SHARED,
|
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"SN_hub_error", (void *)hubdev_info)) {
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printk("hub_error_init: Failed to request_irq for 0x%p\n",
|
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"SN_hub_error", hubdev_info)) {
|
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printk(KERN_ERR "hub_error_init: Failed to request_irq for 0x%p\n",
|
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hubdev_info);
|
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return;
|
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}
|
||||
|
||||
@ -655,7 +655,8 @@ tioce_dma(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma_flags)
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*
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* Simply call tioce_do_dma_map() to create a map with the barrier bit set
|
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* in the address.
|
||||
*/ static u64
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*/
|
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static u64
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tioce_dma_consistent(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma_flags)
|
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{
|
||||
return tioce_do_dma_map(pdev, paddr, byte_count, 1, dma_flags);
|
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@ -668,7 +669,8 @@ tioce_dma_consistent(struct pci_dev *pdev, u64 paddr, size_t byte_count, int dma
|
||||
*
|
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* Handle a CE error interrupt. Simply a wrapper around a SAL call which
|
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* defers processing to the SGI prom.
|
||||
*/ static irqreturn_t
|
||||
*/
|
||||
static irqreturn_t
|
||||
tioce_error_intr_handler(int irq, void *arg)
|
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{
|
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struct tioce_common *soft = arg;
|
||||
|
||||
@ -360,4 +360,16 @@ config ENCLOSURE_SERVICES
|
||||
driver (SCSI/ATA) which supports enclosures
|
||||
or a SCSI enclosure device (SES) to use these services.
|
||||
|
||||
config SGI_XP
|
||||
tristate "Support communication between SGI SSIs"
|
||||
depends on IA64_GENERIC || IA64_SGI_SN2
|
||||
select IA64_UNCACHED_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
|
||||
select GENERIC_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
|
||||
---help---
|
||||
An SGI machine can be divided into multiple Single System
|
||||
Images which act independently of each other and have
|
||||
hardware based memory protection from the others. Enabling
|
||||
this feature will allow for direct communication between SSIs
|
||||
based on a network adapter and DMA messaging.
|
||||
|
||||
endif # MISC_DEVICES
|
||||
|
||||
@ -24,3 +24,4 @@ obj-$(CONFIG_EEPROM_93CX6) += eeprom_93cx6.o
|
||||
obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o
|
||||
obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
|
||||
obj-$(CONFIG_KGDB_TESTS) += kgdbts.o
|
||||
obj-$(CONFIG_SGI_XP) += sgi-xp/
|
||||
|
||||
11
drivers/misc/sgi-xp/Makefile
Normal file
11
drivers/misc/sgi-xp/Makefile
Normal file
@ -0,0 +1,11 @@
|
||||
#
|
||||
# Makefile for SGI's XP devices.
|
||||
#
|
||||
|
||||
obj-$(CONFIG_SGI_XP) += xp.o
|
||||
xp-y := xp_main.o xp_nofault.o
|
||||
|
||||
obj-$(CONFIG_SGI_XP) += xpc.o
|
||||
xpc-y := xpc_main.o xpc_channel.o xpc_partition.o
|
||||
|
||||
obj-$(CONFIG_SGI_XP) += xpnet.o
|
||||
@ -3,18 +3,15 @@
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 2004-2005 Silicon Graphics, Inc. All rights reserved.
|
||||
* Copyright (C) 2004-2008 Silicon Graphics, Inc. All rights reserved.
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* External Cross Partition (XP) structures and defines.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef _ASM_IA64_SN_XP_H
|
||||
#define _ASM_IA64_SN_XP_H
|
||||
|
||||
#ifndef _DRIVERS_MISC_SGIXP_XP_H
|
||||
#define _DRIVERS_MISC_SGIXP_XP_H
|
||||
|
||||
#include <linux/cache.h>
|
||||
#include <linux/hardirq.h>
|
||||
@ -22,14 +19,12 @@
|
||||
#include <asm/sn/types.h>
|
||||
#include <asm/sn/bte.h>
|
||||
|
||||
|
||||
#ifdef USE_DBUG_ON
|
||||
#define DBUG_ON(condition) BUG_ON(condition)
|
||||
#else
|
||||
#define DBUG_ON(condition)
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* Define the maximum number of logically defined partitions the system
|
||||
* can support. It is constrained by the maximum number of hardware
|
||||
@ -43,7 +38,6 @@
|
||||
*/
|
||||
#define XP_MAX_PARTITIONS 64
|
||||
|
||||
|
||||
/*
|
||||
* Define the number of u64s required to represent all the C-brick nasids
|
||||
* as a bitmap. The cross-partition kernel modules deal only with
|
||||
@ -54,7 +48,6 @@
|
||||
#define XP_NASID_MASK_BYTES ((XP_MAX_PHYSNODE_ID + 7) / 8)
|
||||
#define XP_NASID_MASK_WORDS ((XP_MAX_PHYSNODE_ID + 63) / 64)
|
||||
|
||||
|
||||
/*
|
||||
* Wrapper for bte_copy() that should it return a failure status will retry
|
||||
* the bte_copy() once in the hope that the failure was due to a temporary
|
||||
@ -74,7 +67,6 @@ xp_bte_copy(u64 src, u64 vdst, u64 len, u64 mode, void *notification)
|
||||
bte_result_t ret;
|
||||
u64 pdst = ia64_tpa(vdst);
|
||||
|
||||
|
||||
/*
|
||||
* Ensure that the physically mapped memory is contiguous.
|
||||
*
|
||||
@ -87,16 +79,15 @@ xp_bte_copy(u64 src, u64 vdst, u64 len, u64 mode, void *notification)
|
||||
|
||||
ret = bte_copy(src, pdst, len, mode, notification);
|
||||
if ((ret != BTE_SUCCESS) && BTE_ERROR_RETRY(ret)) {
|
||||
if (!in_interrupt()) {
|
||||
if (!in_interrupt())
|
||||
cond_resched();
|
||||
}
|
||||
|
||||
ret = bte_copy(src, pdst, len, mode, notification);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* XPC establishes channel connections between the local partition and any
|
||||
* other partition that is currently up. Over these channels, kernel-level
|
||||
@ -122,7 +113,6 @@ xp_bte_copy(u64 src, u64 vdst, u64 len, u64 mode, void *notification)
|
||||
#error XPC_NCHANNELS exceeds MAXIMUM allowed.
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
* The format of an XPC message is as follows:
|
||||
*
|
||||
@ -160,12 +150,10 @@ struct xpc_msg {
|
||||
u64 payload; /* user defined portion of message */
|
||||
};
|
||||
|
||||
|
||||
#define XPC_MSG_PAYLOAD_OFFSET (u64) (&((struct xpc_msg *)0)->payload)
|
||||
#define XPC_MSG_SIZE(_payload_size) \
|
||||
L1_CACHE_ALIGN(XPC_MSG_PAYLOAD_OFFSET + (_payload_size))
|
||||
|
||||
|
||||
/*
|
||||
* Define the return values and values passed to user's callout functions.
|
||||
* (It is important to add new value codes at the end just preceding
|
||||
@ -267,10 +255,9 @@ enum xpc_retval {
|
||||
/* 115: BTE end */
|
||||
xpcBteSh2End = xpcBteSh2Start + BTEFAIL_SH2_ALL,
|
||||
|
||||
xpcUnknownReason /* 116: unknown reason -- must be last in list */
|
||||
xpcUnknownReason /* 116: unknown reason - must be last in enum */
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Define the callout function types used by XPC to update the user on
|
||||
* connection activity and state changes (via the user function registered by
|
||||
@ -375,12 +362,11 @@ enum xpc_retval {
|
||||
* =====================+================================+=====================
|
||||
*/
|
||||
|
||||
typedef void (*xpc_channel_func)(enum xpc_retval reason, partid_t partid,
|
||||
int ch_number, void *data, void *key);
|
||||
|
||||
typedef void (*xpc_notify_func)(enum xpc_retval reason, partid_t partid,
|
||||
int ch_number, void *key);
|
||||
typedef void (*xpc_channel_func) (enum xpc_retval reason, partid_t partid,
|
||||
int ch_number, void *data, void *key);
|
||||
|
||||
typedef void (*xpc_notify_func) (enum xpc_retval reason, partid_t partid,
|
||||
int ch_number, void *key);
|
||||
|
||||
/*
|
||||
* The following is a registration entry. There is a global array of these,
|
||||
@ -398,50 +384,45 @@ typedef void (*xpc_notify_func)(enum xpc_retval reason, partid_t partid,
|
||||
*/
|
||||
struct xpc_registration {
|
||||
struct mutex mutex;
|
||||
xpc_channel_func func; /* function to call */
|
||||
void *key; /* pointer to user's key */
|
||||
u16 nentries; /* #of msg entries in local msg queue */
|
||||
u16 msg_size; /* message queue's message size */
|
||||
u32 assigned_limit; /* limit on #of assigned kthreads */
|
||||
u32 idle_limit; /* limit on #of idle kthreads */
|
||||
xpc_channel_func func; /* function to call */
|
||||
void *key; /* pointer to user's key */
|
||||
u16 nentries; /* #of msg entries in local msg queue */
|
||||
u16 msg_size; /* message queue's message size */
|
||||
u32 assigned_limit; /* limit on #of assigned kthreads */
|
||||
u32 idle_limit; /* limit on #of idle kthreads */
|
||||
} ____cacheline_aligned;
|
||||
|
||||
|
||||
#define XPC_CHANNEL_REGISTERED(_c) (xpc_registrations[_c].func != NULL)
|
||||
|
||||
|
||||
/* the following are valid xpc_allocate() flags */
|
||||
#define XPC_WAIT 0 /* wait flag */
|
||||
#define XPC_NOWAIT 1 /* no wait flag */
|
||||
|
||||
#define XPC_WAIT 0 /* wait flag */
|
||||
#define XPC_NOWAIT 1 /* no wait flag */
|
||||
|
||||
struct xpc_interface {
|
||||
void (*connect)(int);
|
||||
void (*disconnect)(int);
|
||||
enum xpc_retval (*allocate)(partid_t, int, u32, void **);
|
||||
enum xpc_retval (*send)(partid_t, int, void *);
|
||||
enum xpc_retval (*send_notify)(partid_t, int, void *,
|
||||
xpc_notify_func, void *);
|
||||
void (*received)(partid_t, int, void *);
|
||||
enum xpc_retval (*partid_to_nasids)(partid_t, void *);
|
||||
void (*connect) (int);
|
||||
void (*disconnect) (int);
|
||||
enum xpc_retval (*allocate) (partid_t, int, u32, void **);
|
||||
enum xpc_retval (*send) (partid_t, int, void *);
|
||||
enum xpc_retval (*send_notify) (partid_t, int, void *,
|
||||
xpc_notify_func, void *);
|
||||
void (*received) (partid_t, int, void *);
|
||||
enum xpc_retval (*partid_to_nasids) (partid_t, void *);
|
||||
};
|
||||
|
||||
|
||||
extern struct xpc_interface xpc_interface;
|
||||
|
||||
extern void xpc_set_interface(void (*)(int),
|
||||
void (*)(int),
|
||||
enum xpc_retval (*)(partid_t, int, u32, void **),
|
||||
enum xpc_retval (*)(partid_t, int, void *),
|
||||
enum xpc_retval (*)(partid_t, int, void *, xpc_notify_func,
|
||||
void *),
|
||||
void (*)(partid_t, int, void *),
|
||||
enum xpc_retval (*)(partid_t, void *));
|
||||
void (*)(int),
|
||||
enum xpc_retval (*)(partid_t, int, u32, void **),
|
||||
enum xpc_retval (*)(partid_t, int, void *),
|
||||
enum xpc_retval (*)(partid_t, int, void *,
|
||||
xpc_notify_func, void *),
|
||||
void (*)(partid_t, int, void *),
|
||||
enum xpc_retval (*)(partid_t, void *));
|
||||
extern void xpc_clear_interface(void);
|
||||
|
||||
|
||||
extern enum xpc_retval xpc_connect(int, xpc_channel_func, void *, u16,
|
||||
u16, u32, u32);
|
||||
u16, u32, u32);
|
||||
extern void xpc_disconnect(int);
|
||||
|
||||
static inline enum xpc_retval
|
||||
@ -458,7 +439,7 @@ xpc_send(partid_t partid, int ch_number, void *payload)
|
||||
|
||||
static inline enum xpc_retval
|
||||
xpc_send_notify(partid_t partid, int ch_number, void *payload,
|
||||
xpc_notify_func func, void *key)
|
||||
xpc_notify_func func, void *key)
|
||||
{
|
||||
return xpc_interface.send_notify(partid, ch_number, payload, func, key);
|
||||
}
|
||||
@ -475,11 +456,8 @@ xpc_partid_to_nasids(partid_t partid, void *nasids)
|
||||
return xpc_interface.partid_to_nasids(partid, nasids);
|
||||
}
|
||||
|
||||
|
||||
extern u64 xp_nofault_PIOR_target;
|
||||
extern int xp_nofault_PIOR(void *);
|
||||
extern int xp_error_PIOR(void);
|
||||
|
||||
|
||||
#endif /* _ASM_IA64_SN_XP_H */
|
||||
|
||||
#endif /* _DRIVERS_MISC_SGIXP_XP_H */
|
||||
@ -3,10 +3,9 @@
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (c) 2004-2005 Silicon Graphics, Inc. All Rights Reserved.
|
||||
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* Cross Partition (XP) base.
|
||||
*
|
||||
@ -15,58 +14,64 @@
|
||||
*
|
||||
*/
|
||||
|
||||
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/mutex.h>
|
||||
#include <asm/sn/intr.h>
|
||||
#include <asm/sn/sn_sal.h>
|
||||
#include <asm/sn/xp.h>
|
||||
|
||||
#include "xp.h"
|
||||
|
||||
/*
|
||||
* Target of nofault PIO read.
|
||||
* The export of xp_nofault_PIOR needs to happen here since it is defined
|
||||
* in drivers/misc/sgi-xp/xp_nofault.S. The target of the nofault read is
|
||||
* defined here.
|
||||
*/
|
||||
u64 xp_nofault_PIOR_target;
|
||||
EXPORT_SYMBOL_GPL(xp_nofault_PIOR);
|
||||
|
||||
u64 xp_nofault_PIOR_target;
|
||||
EXPORT_SYMBOL_GPL(xp_nofault_PIOR_target);
|
||||
|
||||
/*
|
||||
* xpc_registrations[] keeps track of xpc_connect()'s done by the kernel-level
|
||||
* users of XPC.
|
||||
*/
|
||||
struct xpc_registration xpc_registrations[XPC_NCHANNELS];
|
||||
|
||||
EXPORT_SYMBOL_GPL(xpc_registrations);
|
||||
|
||||
/*
|
||||
* Initialize the XPC interface to indicate that XPC isn't loaded.
|
||||
*/
|
||||
static enum xpc_retval xpc_notloaded(void) { return xpcNotLoaded; }
|
||||
static enum xpc_retval
|
||||
xpc_notloaded(void)
|
||||
{
|
||||
return xpcNotLoaded;
|
||||
}
|
||||
|
||||
struct xpc_interface xpc_interface = {
|
||||
(void (*)(int)) xpc_notloaded,
|
||||
(void (*)(int)) xpc_notloaded,
|
||||
(enum xpc_retval (*)(partid_t, int, u32, void **)) xpc_notloaded,
|
||||
(enum xpc_retval (*)(partid_t, int, void *)) xpc_notloaded,
|
||||
(enum xpc_retval (*)(partid_t, int, void *, xpc_notify_func, void *))
|
||||
xpc_notloaded,
|
||||
(void (*)(partid_t, int, void *)) xpc_notloaded,
|
||||
(enum xpc_retval (*)(partid_t, void *)) xpc_notloaded
|
||||
(void (*)(int))xpc_notloaded,
|
||||
(void (*)(int))xpc_notloaded,
|
||||
(enum xpc_retval(*)(partid_t, int, u32, void **))xpc_notloaded,
|
||||
(enum xpc_retval(*)(partid_t, int, void *))xpc_notloaded,
|
||||
(enum xpc_retval(*)(partid_t, int, void *, xpc_notify_func, void *))
|
||||
xpc_notloaded,
|
||||
(void (*)(partid_t, int, void *))xpc_notloaded,
|
||||
(enum xpc_retval(*)(partid_t, void *))xpc_notloaded
|
||||
};
|
||||
|
||||
EXPORT_SYMBOL_GPL(xpc_interface);
|
||||
|
||||
/*
|
||||
* XPC calls this when it (the XPC module) has been loaded.
|
||||
*/
|
||||
void
|
||||
xpc_set_interface(void (*connect)(int),
|
||||
void (*disconnect)(int),
|
||||
enum xpc_retval (*allocate)(partid_t, int, u32, void **),
|
||||
enum xpc_retval (*send)(partid_t, int, void *),
|
||||
enum xpc_retval (*send_notify)(partid_t, int, void *,
|
||||
xpc_notify_func, void *),
|
||||
void (*received)(partid_t, int, void *),
|
||||
enum xpc_retval (*partid_to_nasids)(partid_t, void *))
|
||||
xpc_set_interface(void (*connect) (int),
|
||||
void (*disconnect) (int),
|
||||
enum xpc_retval (*allocate) (partid_t, int, u32, void **),
|
||||
enum xpc_retval (*send) (partid_t, int, void *),
|
||||
enum xpc_retval (*send_notify) (partid_t, int, void *,
|
||||
xpc_notify_func, void *),
|
||||
void (*received) (partid_t, int, void *),
|
||||
enum xpc_retval (*partid_to_nasids) (partid_t, void *))
|
||||
{
|
||||
xpc_interface.connect = connect;
|
||||
xpc_interface.disconnect = disconnect;
|
||||
@ -76,7 +81,7 @@ xpc_set_interface(void (*connect)(int),
|
||||
xpc_interface.received = received;
|
||||
xpc_interface.partid_to_nasids = partid_to_nasids;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL_GPL(xpc_set_interface);
|
||||
|
||||
/*
|
||||
* XPC calls this when it (the XPC module) is being unloaded.
|
||||
@ -84,20 +89,21 @@ xpc_set_interface(void (*connect)(int),
|
||||
void
|
||||
xpc_clear_interface(void)
|
||||
{
|
||||
xpc_interface.connect = (void (*)(int)) xpc_notloaded;
|
||||
xpc_interface.disconnect = (void (*)(int)) xpc_notloaded;
|
||||
xpc_interface.allocate = (enum xpc_retval (*)(partid_t, int, u32,
|
||||
void **)) xpc_notloaded;
|
||||
xpc_interface.send = (enum xpc_retval (*)(partid_t, int, void *))
|
||||
xpc_notloaded;
|
||||
xpc_interface.send_notify = (enum xpc_retval (*)(partid_t, int, void *,
|
||||
xpc_notify_func, void *)) xpc_notloaded;
|
||||
xpc_interface.connect = (void (*)(int))xpc_notloaded;
|
||||
xpc_interface.disconnect = (void (*)(int))xpc_notloaded;
|
||||
xpc_interface.allocate = (enum xpc_retval(*)(partid_t, int, u32,
|
||||
void **))xpc_notloaded;
|
||||
xpc_interface.send = (enum xpc_retval(*)(partid_t, int, void *))
|
||||
xpc_notloaded;
|
||||
xpc_interface.send_notify = (enum xpc_retval(*)(partid_t, int, void *,
|
||||
xpc_notify_func,
|
||||
void *))xpc_notloaded;
|
||||
xpc_interface.received = (void (*)(partid_t, int, void *))
|
||||
xpc_notloaded;
|
||||
xpc_interface.partid_to_nasids = (enum xpc_retval (*)(partid_t, void *))
|
||||
xpc_notloaded;
|
||||
xpc_notloaded;
|
||||
xpc_interface.partid_to_nasids = (enum xpc_retval(*)(partid_t, void *))
|
||||
xpc_notloaded;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL_GPL(xpc_clear_interface);
|
||||
|
||||
/*
|
||||
* Register for automatic establishment of a channel connection whenever
|
||||
@ -125,11 +131,10 @@ xpc_clear_interface(void)
|
||||
*/
|
||||
enum xpc_retval
|
||||
xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
|
||||
u16 nentries, u32 assigned_limit, u32 idle_limit)
|
||||
u16 nentries, u32 assigned_limit, u32 idle_limit)
|
||||
{
|
||||
struct xpc_registration *registration;
|
||||
|
||||
|
||||
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
|
||||
DBUG_ON(payload_size == 0 || nentries == 0);
|
||||
DBUG_ON(func == NULL);
|
||||
@ -137,9 +142,8 @@ xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
|
||||
|
||||
registration = &xpc_registrations[ch_number];
|
||||
|
||||
if (mutex_lock_interruptible(®istration->mutex) != 0) {
|
||||
if (mutex_lock_interruptible(®istration->mutex) != 0)
|
||||
return xpcInterrupted;
|
||||
}
|
||||
|
||||
/* if XPC_CHANNEL_REGISTERED(ch_number) */
|
||||
if (registration->func != NULL) {
|
||||
@ -161,7 +165,7 @@ xpc_connect(int ch_number, xpc_channel_func func, void *key, u16 payload_size,
|
||||
|
||||
return xpcSuccess;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL_GPL(xpc_connect);
|
||||
|
||||
/*
|
||||
* Remove the registration for automatic connection of the specified channel
|
||||
@ -181,7 +185,6 @@ xpc_disconnect(int ch_number)
|
||||
{
|
||||
struct xpc_registration *registration;
|
||||
|
||||
|
||||
DBUG_ON(ch_number < 0 || ch_number >= XPC_NCHANNELS);
|
||||
|
||||
registration = &xpc_registrations[ch_number];
|
||||
@ -213,19 +216,17 @@ xpc_disconnect(int ch_number)
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
EXPORT_SYMBOL_GPL(xpc_disconnect);
|
||||
|
||||
int __init
|
||||
xp_init(void)
|
||||
{
|
||||
int ret, ch_number;
|
||||
u64 func_addr = *(u64 *) xp_nofault_PIOR;
|
||||
u64 err_func_addr = *(u64 *) xp_error_PIOR;
|
||||
u64 func_addr = *(u64 *)xp_nofault_PIOR;
|
||||
u64 err_func_addr = *(u64 *)xp_error_PIOR;
|
||||
|
||||
|
||||
if (!ia64_platform_is("sn2")) {
|
||||
if (!ia64_platform_is("sn2"))
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
/*
|
||||
* Register a nofault code region which performs a cross-partition
|
||||
@ -236,55 +237,43 @@ xp_init(void)
|
||||
* least some CPUs on Shubs <= v1.2, which unfortunately we have to
|
||||
* work around).
|
||||
*/
|
||||
if ((ret = sn_register_nofault_code(func_addr, err_func_addr,
|
||||
err_func_addr, 1, 1)) != 0) {
|
||||
ret = sn_register_nofault_code(func_addr, err_func_addr, err_func_addr,
|
||||
1, 1);
|
||||
if (ret != 0) {
|
||||
printk(KERN_ERR "XP: can't register nofault code, error=%d\n",
|
||||
ret);
|
||||
ret);
|
||||
}
|
||||
/*
|
||||
* Setup the nofault PIO read target. (There is no special reason why
|
||||
* SH_IPI_ACCESS was selected.)
|
||||
*/
|
||||
if (is_shub2()) {
|
||||
if (is_shub2())
|
||||
xp_nofault_PIOR_target = SH2_IPI_ACCESS0;
|
||||
} else {
|
||||
else
|
||||
xp_nofault_PIOR_target = SH1_IPI_ACCESS;
|
||||
}
|
||||
|
||||
/* initialize the connection registration mutex */
|
||||
for (ch_number = 0; ch_number < XPC_NCHANNELS; ch_number++) {
|
||||
for (ch_number = 0; ch_number < XPC_NCHANNELS; ch_number++)
|
||||
mutex_init(&xpc_registrations[ch_number].mutex);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
module_init(xp_init);
|
||||
|
||||
module_init(xp_init);
|
||||
|
||||
void __exit
|
||||
xp_exit(void)
|
||||
{
|
||||
u64 func_addr = *(u64 *) xp_nofault_PIOR;
|
||||
u64 err_func_addr = *(u64 *) xp_error_PIOR;
|
||||
|
||||
u64 func_addr = *(u64 *)xp_nofault_PIOR;
|
||||
u64 err_func_addr = *(u64 *)xp_error_PIOR;
|
||||
|
||||
/* unregister the PIO read nofault code region */
|
||||
(void) sn_register_nofault_code(func_addr, err_func_addr,
|
||||
err_func_addr, 1, 0);
|
||||
(void)sn_register_nofault_code(func_addr, err_func_addr,
|
||||
err_func_addr, 1, 0);
|
||||
}
|
||||
module_exit(xp_exit);
|
||||
|
||||
module_exit(xp_exit);
|
||||
|
||||
MODULE_AUTHOR("Silicon Graphics, Inc.");
|
||||
MODULE_DESCRIPTION("Cross Partition (XP) base");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
EXPORT_SYMBOL(xp_nofault_PIOR);
|
||||
EXPORT_SYMBOL(xp_nofault_PIOR_target);
|
||||
EXPORT_SYMBOL(xpc_registrations);
|
||||
EXPORT_SYMBOL(xpc_interface);
|
||||
EXPORT_SYMBOL(xpc_clear_interface);
|
||||
EXPORT_SYMBOL(xpc_set_interface);
|
||||
EXPORT_SYMBOL(xpc_connect);
|
||||
EXPORT_SYMBOL(xpc_disconnect);
|
||||
|
||||
@ -3,10 +3,9 @@
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (c) 2004-2007 Silicon Graphics, Inc. All Rights Reserved.
|
||||
* Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved.
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* The xp_nofault_PIOR function takes a pointer to a remote PIO register
|
||||
* and attempts to load and consume a value from it. This function
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@ -3,10 +3,9 @@
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 1999,2001-2005 Silicon Graphics, Inc. All rights reserved.
|
||||
* Copyright (C) 1999-2008 Silicon Graphics, Inc. All rights reserved.
|
||||
*/
|
||||
|
||||
|
||||
/*
|
||||
* Cross Partition Network Interface (XPNET) support
|
||||
*
|
||||
@ -21,8 +20,8 @@
|
||||
*
|
||||
*/
|
||||
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/ioport.h>
|
||||
@ -36,10 +35,8 @@
|
||||
#include <asm/sn/bte.h>
|
||||
#include <asm/sn/io.h>
|
||||
#include <asm/sn/sn_sal.h>
|
||||
#include <asm/types.h>
|
||||
#include <asm/atomic.h>
|
||||
#include <asm/sn/xp.h>
|
||||
|
||||
#include "xp.h"
|
||||
|
||||
/*
|
||||
* The message payload transferred by XPC.
|
||||
@ -79,7 +76,6 @@ struct xpnet_message {
|
||||
#define XPNET_MSG_ALIGNED_SIZE (L1_CACHE_ALIGN(XPNET_MSG_SIZE))
|
||||
#define XPNET_MSG_NENTRIES (PAGE_SIZE / XPNET_MSG_ALIGNED_SIZE)
|
||||
|
||||
|
||||
#define XPNET_MAX_KTHREADS (XPNET_MSG_NENTRIES + 1)
|
||||
#define XPNET_MAX_IDLE_KTHREADS (XPNET_MSG_NENTRIES + 1)
|
||||
|
||||
@ -91,9 +87,9 @@ struct xpnet_message {
|
||||
#define XPNET_VERSION_MAJOR(_v) ((_v) >> 4)
|
||||
#define XPNET_VERSION_MINOR(_v) ((_v) & 0xf)
|
||||
|
||||
#define XPNET_VERSION _XPNET_VERSION(1,0) /* version 1.0 */
|
||||
#define XPNET_VERSION_EMBED _XPNET_VERSION(1,1) /* version 1.1 */
|
||||
#define XPNET_MAGIC 0x88786984 /* "XNET" */
|
||||
#define XPNET_VERSION _XPNET_VERSION(1, 0) /* version 1.0 */
|
||||
#define XPNET_VERSION_EMBED _XPNET_VERSION(1, 1) /* version 1.1 */
|
||||
#define XPNET_MAGIC 0x88786984 /* "XNET" */
|
||||
|
||||
#define XPNET_VALID_MSG(_m) \
|
||||
((XPNET_VERSION_MAJOR(_m->version) == XPNET_VERSION_MAJOR(XPNET_VERSION)) \
|
||||
@ -101,7 +97,6 @@ struct xpnet_message {
|
||||
|
||||
#define XPNET_DEVICE_NAME "xp0"
|
||||
|
||||
|
||||
/*
|
||||
* When messages are queued with xpc_send_notify, a kmalloc'd buffer
|
||||
* of the following type is passed as a notification cookie. When the
|
||||
@ -145,7 +140,6 @@ static DEFINE_SPINLOCK(xpnet_broadcast_lock);
|
||||
/* 32KB has been determined to be the ideal */
|
||||
#define XPNET_DEF_MTU (0x8000UL)
|
||||
|
||||
|
||||
/*
|
||||
* The partition id is encapsulated in the MAC address. The following
|
||||
* define locates the octet the partid is in.
|
||||
@ -153,7 +147,6 @@ static DEFINE_SPINLOCK(xpnet_broadcast_lock);
|
||||
#define XPNET_PARTID_OCTET 1
|
||||
#define XPNET_LICENSE_OCTET 2
|
||||
|
||||
|
||||
/*
|
||||
* Define the XPNET debug device structure that is to be used with dev_dbg(),
|
||||
* dev_err(), dev_warn(), and dev_info().
|
||||
@ -163,7 +156,7 @@ struct device_driver xpnet_dbg_name = {
|
||||
};
|
||||
|
||||
struct device xpnet_dbg_subname = {
|
||||
.bus_id = {0}, /* set to "" */
|
||||
.bus_id = {0}, /* set to "" */
|
||||
.driver = &xpnet_dbg_name
|
||||
};
|
||||
|
||||
@ -178,14 +171,13 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
|
||||
struct sk_buff *skb;
|
||||
bte_result_t bret;
|
||||
struct xpnet_dev_private *priv =
|
||||
(struct xpnet_dev_private *) xpnet_device->priv;
|
||||
|
||||
(struct xpnet_dev_private *)xpnet_device->priv;
|
||||
|
||||
if (!XPNET_VALID_MSG(msg)) {
|
||||
/*
|
||||
* Packet with a different XPC version. Ignore.
|
||||
*/
|
||||
xpc_received(partid, channel, (void *) msg);
|
||||
xpc_received(partid, channel, (void *)msg);
|
||||
|
||||
priv->stats.rx_errors++;
|
||||
|
||||
@ -194,14 +186,13 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
|
||||
dev_dbg(xpnet, "received 0x%lx, %d, %d, %d\n", msg->buf_pa, msg->size,
|
||||
msg->leadin_ignore, msg->tailout_ignore);
|
||||
|
||||
|
||||
/* reserve an extra cache line */
|
||||
skb = dev_alloc_skb(msg->size + L1_CACHE_BYTES);
|
||||
if (!skb) {
|
||||
dev_err(xpnet, "failed on dev_alloc_skb(%d)\n",
|
||||
msg->size + L1_CACHE_BYTES);
|
||||
|
||||
xpc_received(partid, channel, (void *) msg);
|
||||
xpc_received(partid, channel, (void *)msg);
|
||||
|
||||
priv->stats.rx_errors++;
|
||||
|
||||
@ -227,12 +218,13 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
|
||||
* Move the data over from the other side.
|
||||
*/
|
||||
if ((XPNET_VERSION_MINOR(msg->version) == 1) &&
|
||||
(msg->embedded_bytes != 0)) {
|
||||
(msg->embedded_bytes != 0)) {
|
||||
dev_dbg(xpnet, "copying embedded message. memcpy(0x%p, 0x%p, "
|
||||
"%lu)\n", skb->data, &msg->data,
|
||||
(size_t) msg->embedded_bytes);
|
||||
(size_t)msg->embedded_bytes);
|
||||
|
||||
skb_copy_to_linear_data(skb, &msg->data, (size_t)msg->embedded_bytes);
|
||||
skb_copy_to_linear_data(skb, &msg->data,
|
||||
(size_t)msg->embedded_bytes);
|
||||
} else {
|
||||
dev_dbg(xpnet, "transferring buffer to the skb->data area;\n\t"
|
||||
"bte_copy(0x%p, 0x%p, %hu)\n", (void *)msg->buf_pa,
|
||||
@ -244,16 +236,18 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
|
||||
msg->size, (BTE_NOTIFY | BTE_WACQUIRE), NULL);
|
||||
|
||||
if (bret != BTE_SUCCESS) {
|
||||
// >>> Need better way of cleaning skb. Currently skb
|
||||
// >>> appears in_use and we can't just call
|
||||
// >>> dev_kfree_skb.
|
||||
/*
|
||||
* >>> Need better way of cleaning skb. Currently skb
|
||||
* >>> appears in_use and we can't just call
|
||||
* >>> dev_kfree_skb.
|
||||
*/
|
||||
dev_err(xpnet, "bte_copy(0x%p, 0x%p, 0x%hx) returned "
|
||||
"error=0x%x\n", (void *)msg->buf_pa,
|
||||
(void *)__pa((u64)skb->data &
|
||||
~(L1_CACHE_BYTES - 1)),
|
||||
~(L1_CACHE_BYTES - 1)),
|
||||
msg->size, bret);
|
||||
|
||||
xpc_received(partid, channel, (void *) msg);
|
||||
xpc_received(partid, channel, (void *)msg);
|
||||
|
||||
priv->stats.rx_errors++;
|
||||
|
||||
@ -262,7 +256,7 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
|
||||
}
|
||||
|
||||
dev_dbg(xpnet, "<skb->head=0x%p skb->data=0x%p skb->tail=0x%p "
|
||||
"skb->end=0x%p skb->len=%d\n", (void *) skb->head,
|
||||
"skb->end=0x%p skb->len=%d\n", (void *)skb->head,
|
||||
(void *)skb->data, skb_tail_pointer(skb), skb_end_pointer(skb),
|
||||
skb->len);
|
||||
|
||||
@ -275,16 +269,14 @@ xpnet_receive(partid_t partid, int channel, struct xpnet_message *msg)
|
||||
(void *)skb->head, (void *)skb->data, skb_tail_pointer(skb),
|
||||
skb_end_pointer(skb), skb->len);
|
||||
|
||||
|
||||
xpnet_device->last_rx = jiffies;
|
||||
priv->stats.rx_packets++;
|
||||
priv->stats.rx_bytes += skb->len + ETH_HLEN;
|
||||
|
||||
netif_rx_ni(skb);
|
||||
xpc_received(partid, channel, (void *) msg);
|
||||
xpc_received(partid, channel, (void *)msg);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* This is the handler which XPC calls during any sort of change in
|
||||
* state or message reception on a connection.
|
||||
@ -295,20 +287,19 @@ xpnet_connection_activity(enum xpc_retval reason, partid_t partid, int channel,
|
||||
{
|
||||
long bp;
|
||||
|
||||
|
||||
DBUG_ON(partid <= 0 || partid >= XP_MAX_PARTITIONS);
|
||||
DBUG_ON(channel != XPC_NET_CHANNEL);
|
||||
|
||||
switch(reason) {
|
||||
switch (reason) {
|
||||
case xpcMsgReceived: /* message received */
|
||||
DBUG_ON(data == NULL);
|
||||
|
||||
xpnet_receive(partid, channel, (struct xpnet_message *) data);
|
||||
xpnet_receive(partid, channel, (struct xpnet_message *)data);
|
||||
break;
|
||||
|
||||
case xpcConnected: /* connection completed to a partition */
|
||||
spin_lock_bh(&xpnet_broadcast_lock);
|
||||
xpnet_broadcast_partitions |= 1UL << (partid -1 );
|
||||
xpnet_broadcast_partitions |= 1UL << (partid - 1);
|
||||
bp = xpnet_broadcast_partitions;
|
||||
spin_unlock_bh(&xpnet_broadcast_lock);
|
||||
|
||||
@ -321,13 +312,12 @@ xpnet_connection_activity(enum xpc_retval reason, partid_t partid, int channel,
|
||||
|
||||
default:
|
||||
spin_lock_bh(&xpnet_broadcast_lock);
|
||||
xpnet_broadcast_partitions &= ~(1UL << (partid -1 ));
|
||||
xpnet_broadcast_partitions &= ~(1UL << (partid - 1));
|
||||
bp = xpnet_broadcast_partitions;
|
||||
spin_unlock_bh(&xpnet_broadcast_lock);
|
||||
|
||||
if (bp == 0) {
|
||||
if (bp == 0)
|
||||
netif_carrier_off(xpnet_device);
|
||||
}
|
||||
|
||||
dev_dbg(xpnet, "%s disconnected from partition %d; "
|
||||
"xpnet_broadcast_partitions=0x%lx\n",
|
||||
@ -337,13 +327,11 @@ xpnet_connection_activity(enum xpc_retval reason, partid_t partid, int channel,
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
xpnet_dev_open(struct net_device *dev)
|
||||
{
|
||||
enum xpc_retval ret;
|
||||
|
||||
|
||||
dev_dbg(xpnet, "calling xpc_connect(%d, 0x%p, NULL, %ld, %ld, %ld, "
|
||||
"%ld)\n", XPC_NET_CHANNEL, xpnet_connection_activity,
|
||||
XPNET_MSG_SIZE, XPNET_MSG_NENTRIES, XPNET_MAX_KTHREADS,
|
||||
@ -364,7 +352,6 @@ xpnet_dev_open(struct net_device *dev)
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
xpnet_dev_stop(struct net_device *dev)
|
||||
{
|
||||
@ -375,7 +362,6 @@ xpnet_dev_stop(struct net_device *dev)
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int
|
||||
xpnet_dev_change_mtu(struct net_device *dev, int new_mtu)
|
||||
{
|
||||
@ -392,7 +378,6 @@ xpnet_dev_change_mtu(struct net_device *dev, int new_mtu)
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Required for the net_device structure.
|
||||
*/
|
||||
@ -402,7 +387,6 @@ xpnet_dev_set_config(struct net_device *dev, struct ifmap *new_map)
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Return statistics to the caller.
|
||||
*/
|
||||
@ -411,13 +395,11 @@ xpnet_dev_get_stats(struct net_device *dev)
|
||||
{
|
||||
struct xpnet_dev_private *priv;
|
||||
|
||||
|
||||
priv = (struct xpnet_dev_private *) dev->priv;
|
||||
priv = (struct xpnet_dev_private *)dev->priv;
|
||||
|
||||
return &priv->stats;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Notification that the other end has received the message and
|
||||
* DMA'd the skb information. At this point, they are done with
|
||||
@ -426,11 +408,9 @@ xpnet_dev_get_stats(struct net_device *dev)
|
||||
*/
|
||||
static void
|
||||
xpnet_send_completed(enum xpc_retval reason, partid_t partid, int channel,
|
||||
void *__qm)
|
||||
void *__qm)
|
||||
{
|
||||
struct xpnet_pending_msg *queued_msg =
|
||||
(struct xpnet_pending_msg *) __qm;
|
||||
|
||||
struct xpnet_pending_msg *queued_msg = (struct xpnet_pending_msg *)__qm;
|
||||
|
||||
DBUG_ON(queued_msg == NULL);
|
||||
|
||||
@ -439,14 +419,13 @@ xpnet_send_completed(enum xpc_retval reason, partid_t partid, int channel,
|
||||
|
||||
if (atomic_dec_return(&queued_msg->use_count) == 0) {
|
||||
dev_dbg(xpnet, "all acks for skb->head=-x%p\n",
|
||||
(void *) queued_msg->skb->head);
|
||||
(void *)queued_msg->skb->head);
|
||||
|
||||
dev_kfree_skb_any(queued_msg->skb);
|
||||
kfree(queued_msg);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Network layer has formatted a packet (skb) and is ready to place it
|
||||
* "on the wire". Prepare and send an xpnet_message to all partitions
|
||||
@ -469,16 +448,13 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
struct xpnet_dev_private *priv;
|
||||
u16 embedded_bytes;
|
||||
|
||||
|
||||
priv = (struct xpnet_dev_private *) dev->priv;
|
||||
|
||||
priv = (struct xpnet_dev_private *)dev->priv;
|
||||
|
||||
dev_dbg(xpnet, ">skb->head=0x%p skb->data=0x%p skb->tail=0x%p "
|
||||
"skb->end=0x%p skb->len=%d\n", (void *) skb->head,
|
||||
"skb->end=0x%p skb->len=%d\n", (void *)skb->head,
|
||||
(void *)skb->data, skb_tail_pointer(skb), skb_end_pointer(skb),
|
||||
skb->len);
|
||||
|
||||
|
||||
/*
|
||||
* The xpnet_pending_msg tracks how many outstanding
|
||||
* xpc_send_notifies are relying on this skb. When none
|
||||
@ -487,16 +463,15 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
queued_msg = kmalloc(sizeof(struct xpnet_pending_msg), GFP_ATOMIC);
|
||||
if (queued_msg == NULL) {
|
||||
dev_warn(xpnet, "failed to kmalloc %ld bytes; dropping "
|
||||
"packet\n", sizeof(struct xpnet_pending_msg));
|
||||
"packet\n", sizeof(struct xpnet_pending_msg));
|
||||
|
||||
priv->stats.tx_errors++;
|
||||
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
|
||||
/* get the beginning of the first cacheline and end of last */
|
||||
start_addr = ((u64) skb->data & ~(L1_CACHE_BYTES - 1));
|
||||
start_addr = ((u64)skb->data & ~(L1_CACHE_BYTES - 1));
|
||||
end_addr = L1_CACHE_ALIGN((u64)skb_tail_pointer(skb));
|
||||
|
||||
/* calculate how many bytes to embed in the XPC message */
|
||||
@ -506,7 +481,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
embedded_bytes = skb->len;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Since the send occurs asynchronously, we set the count to one
|
||||
* and begin sending. Any sends that happen to complete before
|
||||
@ -517,14 +491,13 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
atomic_set(&queued_msg->use_count, 1);
|
||||
queued_msg->skb = skb;
|
||||
|
||||
|
||||
second_mac_octet = skb->data[XPNET_PARTID_OCTET];
|
||||
if (second_mac_octet == 0xff) {
|
||||
/* we are being asked to broadcast to all partitions */
|
||||
dp = xpnet_broadcast_partitions;
|
||||
} else if (second_mac_octet != 0) {
|
||||
dp = xpnet_broadcast_partitions &
|
||||
(1UL << (second_mac_octet - 1));
|
||||
(1UL << (second_mac_octet - 1));
|
||||
} else {
|
||||
/* 0 is an invalid partid. Ignore */
|
||||
dp = 0;
|
||||
@ -543,7 +516,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
for (dest_partid = 1; dp && dest_partid < XP_MAX_PARTITIONS;
|
||||
dest_partid++) {
|
||||
|
||||
|
||||
if (!(dp & (1UL << (dest_partid - 1)))) {
|
||||
/* not destined for this partition */
|
||||
continue;
|
||||
@ -552,20 +524,18 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
/* remove this partition from the destinations mask */
|
||||
dp &= ~(1UL << (dest_partid - 1));
|
||||
|
||||
|
||||
/* found a partition to send to */
|
||||
|
||||
ret = xpc_allocate(dest_partid, XPC_NET_CHANNEL,
|
||||
XPC_NOWAIT, (void **)&msg);
|
||||
if (unlikely(ret != xpcSuccess)) {
|
||||
if (unlikely(ret != xpcSuccess))
|
||||
continue;
|
||||
}
|
||||
|
||||
msg->embedded_bytes = embedded_bytes;
|
||||
if (unlikely(embedded_bytes != 0)) {
|
||||
msg->version = XPNET_VERSION_EMBED;
|
||||
dev_dbg(xpnet, "calling memcpy(0x%p, 0x%p, 0x%lx)\n",
|
||||
&msg->data, skb->data, (size_t) embedded_bytes);
|
||||
&msg->data, skb->data, (size_t)embedded_bytes);
|
||||
skb_copy_from_linear_data(skb, &msg->data,
|
||||
(size_t)embedded_bytes);
|
||||
} else {
|
||||
@ -573,7 +543,7 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
}
|
||||
msg->magic = XPNET_MAGIC;
|
||||
msg->size = end_addr - start_addr;
|
||||
msg->leadin_ignore = (u64) skb->data - start_addr;
|
||||
msg->leadin_ignore = (u64)skb->data - start_addr;
|
||||
msg->tailout_ignore = end_addr - (u64)skb_tail_pointer(skb);
|
||||
msg->buf_pa = __pa(start_addr);
|
||||
|
||||
@ -583,7 +553,6 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
dest_partid, XPC_NET_CHANNEL, msg->buf_pa, msg->size,
|
||||
msg->leadin_ignore, msg->tailout_ignore);
|
||||
|
||||
|
||||
atomic_inc(&queued_msg->use_count);
|
||||
|
||||
ret = xpc_send_notify(dest_partid, XPC_NET_CHANNEL, msg,
|
||||
@ -592,14 +561,12 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
atomic_dec(&queued_msg->use_count);
|
||||
continue;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
if (atomic_dec_return(&queued_msg->use_count) == 0) {
|
||||
dev_dbg(xpnet, "no partitions to receive packet destined for "
|
||||
"%d\n", dest_partid);
|
||||
|
||||
|
||||
dev_kfree_skb(skb);
|
||||
kfree(queued_msg);
|
||||
}
|
||||
@ -610,23 +577,20 @@ xpnet_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Deal with transmit timeouts coming from the network layer.
|
||||
*/
|
||||
static void
|
||||
xpnet_dev_tx_timeout (struct net_device *dev)
|
||||
xpnet_dev_tx_timeout(struct net_device *dev)
|
||||
{
|
||||
struct xpnet_dev_private *priv;
|
||||
|
||||
|
||||
priv = (struct xpnet_dev_private *) dev->priv;
|
||||
priv = (struct xpnet_dev_private *)dev->priv;
|
||||
|
||||
priv->stats.tx_errors++;
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
static int __init
|
||||
xpnet_init(void)
|
||||
{
|
||||
@ -634,10 +598,8 @@ xpnet_init(void)
|
||||
u32 license_num;
|
||||
int result = -ENOMEM;
|
||||
|
||||
|
||||
if (!ia64_platform_is("sn2")) {
|
||||
if (!ia64_platform_is("sn2"))
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
dev_info(xpnet, "registering network device %s\n", XPNET_DEVICE_NAME);
|
||||
|
||||
@ -647,9 +609,8 @@ xpnet_init(void)
|
||||
*/
|
||||
xpnet_device = alloc_netdev(sizeof(struct xpnet_dev_private),
|
||||
XPNET_DEVICE_NAME, ether_setup);
|
||||
if (xpnet_device == NULL) {
|
||||
if (xpnet_device == NULL)
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
netif_carrier_off(xpnet_device);
|
||||
|
||||
@ -672,7 +633,7 @@ xpnet_init(void)
|
||||
license_num = sn_partition_serial_number_val();
|
||||
for (i = 3; i >= 0; i--) {
|
||||
xpnet_device->dev_addr[XPNET_LICENSE_OCTET + i] =
|
||||
license_num & 0xff;
|
||||
license_num & 0xff;
|
||||
license_num = license_num >> 8;
|
||||
}
|
||||
|
||||
@ -690,29 +651,27 @@ xpnet_init(void)
|
||||
xpnet_device->features = NETIF_F_NO_CSUM;
|
||||
|
||||
result = register_netdev(xpnet_device);
|
||||
if (result != 0) {
|
||||
if (result != 0)
|
||||
free_netdev(xpnet_device);
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
module_init(xpnet_init);
|
||||
|
||||
module_init(xpnet_init);
|
||||
|
||||
static void __exit
|
||||
xpnet_exit(void)
|
||||
{
|
||||
dev_info(xpnet, "unregistering network device %s\n",
|
||||
xpnet_device[0].name);
|
||||
xpnet_device[0].name);
|
||||
|
||||
unregister_netdev(xpnet_device);
|
||||
|
||||
free_netdev(xpnet_device);
|
||||
}
|
||||
module_exit(xpnet_exit);
|
||||
|
||||
module_exit(xpnet_exit);
|
||||
|
||||
MODULE_AUTHOR("Silicon Graphics, Inc.");
|
||||
MODULE_DESCRIPTION("Cross Partition Network adapter (XPNET)");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
@ -157,6 +157,7 @@ extern void ia64_mca_printk(const char * fmt, ...)
|
||||
struct ia64_mca_notify_die {
|
||||
struct ia64_sal_os_state *sos;
|
||||
int *monarch_cpu;
|
||||
int *data;
|
||||
};
|
||||
|
||||
DECLARE_PER_CPU(u64, ia64_mca_pal_base);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user