of: add 'of_' prefix to machine_is_compatible()

[safe/jmp/linux-2.6] / arch / powerpc / platforms / cell / ras.c

diff --git a/arch/powerpc/platforms/cell/ras.c b/arch/powerpc/platforms/cell/ras.c
index e43024c..608fd2b 100644 (file)
--- a/arch/powerpc/platforms/cell/ras.c
+++ b/arch/powerpc/platforms/cell/ras.c
@@ -13,7 +13,10 @@
 #include <linux/kernel.h>
 #include <linux/smp.h>
 #include <linux/reboot.h>
+#include <linux/kexec.h>
+#include <linux/crash_dump.h>
 
+#include <asm/kexec.h>
 #include <asm/reg.h>
 #include <asm/io.h>
 #include <asm/prom.h>
@@ -35,16 +38,16 @@ static void dump_fir(int cpu)
        /* Todo: do some nicer parsing of bits and based on them go down
         * to other sub-units FIRs and not only IIC
         */
-       printk(KERN_ERR "Global Checkstop FIR    : 0x%016lx\n",
+       printk(KERN_ERR "Global Checkstop FIR    : 0x%016llx\n",
               in_be64(&pregs->checkstop_fir));
-       printk(KERN_ERR "Global Recoverable FIR  : 0x%016lx\n",
+       printk(KERN_ERR "Global Recoverable FIR  : 0x%016llx\n",
               in_be64(&pregs->checkstop_fir));
-       printk(KERN_ERR "Global MachineCheck FIR : 0x%016lx\n",
+       printk(KERN_ERR "Global MachineCheck FIR : 0x%016llx\n",
               in_be64(&pregs->spec_att_mchk_fir));
 
        if (iregs == NULL)
                return;
-       printk(KERN_ERR "IOC FIR                 : 0x%016lx\n",
+       printk(KERN_ERR "IOC FIR                 : 0x%016llx\n",
               in_be64(&iregs->ioc_fir));
 
 }
@@ -110,9 +113,8 @@ static int __init cbe_ptcal_enable_on_node(int nid, int order)
        int ret = -ENOMEM;
        unsigned long addr;
 
-#ifdef CONFIG_CRASH_DUMP
-       rtas_call(ptcal_stop_tok, 1, 1, NULL, nid);
-#endif
+       if (is_kdump_kernel())
+               rtas_call(ptcal_stop_tok, 1, 1, NULL, nid);
 
        area = kmalloc(sizeof(*area), GFP_KERNEL);
        if (!area)
@@ -120,19 +122,30 @@ static int __init cbe_ptcal_enable_on_node(int nid, int order)
 
        area->nid = nid;
        area->order = order;
-       area->pages = alloc_pages_node(area->nid, GFP_KERNEL, area->order);
+       area->pages = alloc_pages_exact_node(area->nid, GFP_KERNEL|GFP_THISNODE,
+                                               area->order);
 
-       if (!area->pages)
+       if (!area->pages) {
+               printk(KERN_WARNING "%s: no page on node %d\n",
+                       __func__, area->nid);
                goto out_free_area;
+       }
 
-       addr = __pa(page_address(area->pages));
+       /*
+        * We move the ptcal area to the middle of the allocated
+        * page, in order to avoid prefetches in memcpy and similar
+        * functions stepping on it.
+        */
+       addr = __pa(page_address(area->pages)) + (PAGE_SIZE >> 1);
+       printk(KERN_DEBUG "%s: enabling PTCAL on node %d address=0x%016lx\n",
+                       __func__, area->nid, addr);
 
        ret = -EIO;
        if (rtas_call(ptcal_start_tok, 3, 1, NULL, area->nid,
                                (unsigned int)(addr >> 32),
                                (unsigned int)(addr & 0xffffffff))) {
                printk(KERN_ERR "%s: error enabling PTCAL on node %d!\n",
-                               __FUNCTION__, nid);
+                               __func__, nid);
                goto out_free_pages;
        }
 
@@ -162,7 +175,7 @@ static int __init cbe_ptcal_enable(void)
        if (!size)
                return -ENODEV;
 
-       pr_debug("%s: enabling PTCAL, size = 0x%x\n", __FUNCTION__, *size);
+       pr_debug("%s: enabling PTCAL, size = 0x%x\n", __func__, *size);
        order = get_order(*size);
        of_node_put(np);
 
@@ -180,7 +193,7 @@ static int __init cbe_ptcal_enable(void)
                const u32 *nid = of_get_property(np, "node-id", NULL);
                if (!nid) {
                        printk(KERN_ERR "%s: node %s is missing node-id?\n",
-                                       __FUNCTION__, np->full_name);
+                                       __func__, np->full_name);
                        continue;
                }
                cbe_ptcal_enable_on_node(*nid, order);
@@ -195,13 +208,13 @@ static int cbe_ptcal_disable(void)
        struct ptcal_area *area, *tmp;
        int ret = 0;
 
-       pr_debug("%s: disabling PTCAL\n", __FUNCTION__);
+       pr_debug("%s: disabling PTCAL\n", __func__);
 
        list_for_each_entry_safe(area, tmp, &ptcal_list, list) {
                /* disable ptcal on this node */
                if (rtas_call(ptcal_stop_tok, 1, 1, NULL, area->nid)) {
                        printk(KERN_ERR "%s: error disabling PTCAL "
-                                       "on node %d!\n", __FUNCTION__,
+                                       "on node %d!\n", __func__,
                                        area->nid);
                        ret = -EIO;
                        continue;
@@ -226,10 +239,61 @@ static int cbe_ptcal_notify_reboot(struct notifier_block *nb,
        return cbe_ptcal_disable();
 }
 
+static void cbe_ptcal_crash_shutdown(void)
+{
+       cbe_ptcal_disable();
+}
+
 static struct notifier_block cbe_ptcal_reboot_notifier = {
        .notifier_call = cbe_ptcal_notify_reboot
 };
 
+#ifdef CONFIG_PPC_IBM_CELL_RESETBUTTON
+static int sysreset_hack;
+
+static int __init cbe_sysreset_init(void)
+{
+       struct cbe_pmd_regs __iomem *regs;
+
+       sysreset_hack = of_machine_is_compatible("IBM,CBPLUS-1.0");
+       if (!sysreset_hack)
+               return 0;
+
+       regs = cbe_get_cpu_pmd_regs(0);
+       if (!regs)
+               return 0;
+
+       /* Enable JTAG system-reset hack */
+       out_be32(&regs->fir_mode_reg,
+               in_be32(&regs->fir_mode_reg) |
+               CBE_PMD_FIR_MODE_M8);
+
+       return 0;
+}
+device_initcall(cbe_sysreset_init);
+
+int cbe_sysreset_hack(void)
+{
+       struct cbe_pmd_regs __iomem *regs;
+
+       /*
+        * The BMC can inject user triggered system reset exceptions,
+        * but cannot set the system reset reason in srr1,
+        * so check an extra register here.
+        */
+       if (sysreset_hack && (smp_processor_id() == 0)) {
+               regs = cbe_get_cpu_pmd_regs(0);
+               if (!regs)
+                       return 0;
+               if (in_be64(&regs->ras_esc_0) & 0x0000ffff) {
+                       out_be64(&regs->ras_esc_0, 0);
+                       return 0;
+               }
+       }
+       return 1;
+}
+#endif /* CONFIG_PPC_IBM_CELL_RESETBUTTON */
+
 int __init cbe_ptcal_init(void)
 {
        int ret;
@@ -241,12 +305,20 @@ int __init cbe_ptcal_init(void)
                return -ENODEV;
 
        ret = register_reboot_notifier(&cbe_ptcal_reboot_notifier);
-       if (ret) {
-               printk(KERN_ERR "Can't disable PTCAL, so not enabling\n");
-               return ret;
-       }
+       if (ret)
+               goto out1;
+
+       ret = crash_shutdown_register(&cbe_ptcal_crash_shutdown);
+       if (ret)
+               goto out2;
 
        return cbe_ptcal_enable();
+
+out2:
+       unregister_reboot_notifier(&cbe_ptcal_reboot_notifier);
+out1:
+       printk(KERN_ERR "Can't disable PTCAL, so not enabling\n");
+       return ret;
 }
 
 arch_initcall(cbe_ptcal_init);