Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (202 commits)
  [POWERPC] Fix compile breakage for 64-bit UP configs
  [POWERPC] Define copy_siginfo_from_user32
  [POWERPC] Add compat handler for PTRACE_GETSIGINFO
  [POWERPC] i2c: Fix build breakage introduced by OF helpers
  [POWERPC] Optimize fls64() on 64-bit processors
  [POWERPC] irqtrace support for 64-bit powerpc
  [POWERPC] Stacktrace support for lockdep
  [POWERPC] Move stackframe definitions to common header
  [POWERPC] Fix device-tree locking vs. interrupts
  [POWERPC] Make pci_bus_to_host()'s struct pci_bus * argument const
  [POWERPC] Remove unused __max_memory variable
  [POWERPC] Simplify xics direct/lpar irq_host setup
  [POWERPC] Use pseries_setup_i8259_cascade() in pseries_mpic_init_IRQ()
  [POWERPC] Turn xics_setup_8259_cascade() into a generic pseries_setup_i8259_cascade()
  [POWERPC] Move xics_setup_8259_cascade() into platforms/pseries/setup.c
  [POWERPC] Use asm-generic/bitops/find.h in bitops.h
  [POWERPC] 83xx: mpc8315 - fix USB UTMI Host setup
  [POWERPC] 85xx: Fix the size of qe muram for MPC8568E
  [POWERPC] 86xx: mpc86xx_hpcn - Temporarily accept old dts node identifier.
  [POWERPC] 86xx: mark functions static, other minor cleanups
  ...

1 files changed, 61 insertions, 44 deletions

diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index fdb9b1c8f977..f66aa9c3b135 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -76,9 +76,6 @@
 #define DBG(fmt...)
 #endif
 
-/* move those away to a .h */
-extern void find_udbg_vterm(void);
-
 int fwnmi_active;  /* TRUE if an FWNMI handler is present */
 
 static void pseries_shared_idle_sleep(void);
@@ -127,14 +124,60 @@ void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc)
         desc->chip->eoi(irq);
 }
 
-static void __init pseries_mpic_init_IRQ(void)
+static void __init pseries_setup_i8259_cascade(void)
 {
-        struct device_node *np, *old, *cascade = NULL;
-        const unsigned int *addrp;
+        struct device_node *np, *old, *found = NULL;
+        unsigned int cascade;
+        const u32 *addrp;
         unsigned long intack = 0;
+        int naddr;
+
+        for_each_node_by_type(np, "interrupt-controller") {
+                if (of_device_is_compatible(np, "chrp,iic")) {
+                        found = np;
+                        break;
+                }
+        }
+
+        if (found == NULL) {
+                printk(KERN_DEBUG "pic: no ISA interrupt controller\n");
+                return;
+        }
+
+        cascade = irq_of_parse_and_map(found, 0);
+        if (cascade == NO_IRQ) {
+                printk(KERN_ERR "pic: failed to map cascade interrupt");
+                return;
+        }
+        pr_debug("pic: cascade mapped to irq %d\n", cascade);
+
+        for (old = of_node_get(found); old != NULL ; old = np) {
+                np = of_get_parent(old);
+                of_node_put(old);
+                if (np == NULL)
+                        break;
+                if (strcmp(np->name, "pci") != 0)
+                        continue;
+                addrp = of_get_property(np, "8259-interrupt-acknowledge", NULL);
+                if (addrp == NULL)
+                        continue;
+                naddr = of_n_addr_cells(np);
+                intack = addrp[naddr-1];
+                if (naddr > 1)
+                        intack |= ((unsigned long)addrp[naddr-2]) << 32;
+        }
+        if (intack)
+                printk(KERN_DEBUG "pic: PCI 8259 intack at 0x%016lx\n", intack);
+        i8259_init(found, intack);
+        of_node_put(found);
+        set_irq_chained_handler(cascade, pseries_8259_cascade);
+}
+
+static void __init pseries_mpic_init_IRQ(void)
+{
+        struct device_node *np;
         const unsigned int *opprop;
         unsigned long openpic_addr = 0;
-        unsigned int cascade_irq;
         int naddr, n, i, opplen;
         struct mpic *mpic;
 
@@ -167,43 +210,13 @@ static void __init pseries_mpic_init_IRQ(void)
         mpic_init(mpic);
 
         /* Look for cascade */
-        for_each_node_by_type(np, "interrupt-controller")
-                if (of_device_is_compatible(np, "chrp,iic")) {
-                        cascade = np;
-                        break;
-                }
-        if (cascade == NULL)
-                return;
-
-        cascade_irq = irq_of_parse_and_map(cascade, 0);
-        if (cascade_irq == NO_IRQ) {
-                printk(KERN_ERR "mpic: failed to map cascade interrupt");
-                return;
-        }
+        pseries_setup_i8259_cascade();
+}
 
-        /* Check ACK type */
-        for (old = of_node_get(cascade); old != NULL ; old = np) {
-                np = of_get_parent(old);
-                of_node_put(old);
-                if (np == NULL)
-                        break;
-                if (strcmp(np->name, "pci") != 0)
-                        continue;
-                addrp = of_get_property(np, "8259-interrupt-acknowledge",
-                                            NULL);
-                if (addrp == NULL)
-                        continue;
-                naddr = of_n_addr_cells(np);
-                intack = addrp[naddr-1];
-                if (naddr > 1)
-                        intack |= ((unsigned long)addrp[naddr-2]) << 32;
-        }
-        if (intack)
-                printk(KERN_DEBUG "mpic: PCI 8259 intack at 0x%016lx\n",
-                       intack);
-        i8259_init(cascade, intack);
-        of_node_put(cascade);
-        set_irq_chained_handler(cascade_irq, pseries_8259_cascade);
+static void __init pseries_xics_init_IRQ(void)
+{
+        xics_init_IRQ();
+        pseries_setup_i8259_cascade();
 }
 
 static void pseries_lpar_enable_pmcs(void)
@@ -235,7 +248,7 @@ static void __init pseries_discover_pic(void)
                         smp_init_pseries_mpic();
                         return;
                 } else if (strstr(typep, "ppc-xicp")) {
-                        ppc_md.init_IRQ       = xics_init_IRQ;
+                        ppc_md.init_IRQ       = pseries_xics_init_IRQ;
                         setup_kexec_cpu_down_xics();
                         smp_init_pseries_xics();
                         return;
@@ -393,6 +406,7 @@ static void pseries_dedicated_idle_sleep(void)
 { 
         unsigned int cpu = smp_processor_id();
         unsigned long start_snooze;
+        unsigned long in_purr, out_purr;
 
         /*
          * Indicate to the HV that we are idle. Now would be
@@ -400,6 +414,7 @@ static void pseries_dedicated_idle_sleep(void)
          */
         get_lppaca()->idle = 1;
         get_lppaca()->donate_dedicated_cpu = 1;
+        in_purr = mfspr(SPRN_PURR);
 
         /*
          * We come in with interrupts disabled, and need_resched()
@@ -432,6 +447,8 @@ static void pseries_dedicated_idle_sleep(void)
 
 out:
         HMT_medium();
+        out_purr = mfspr(SPRN_PURR);
+        get_lppaca()->wait_state_cycles += out_purr - in_purr;
         get_lppaca()->donate_dedicated_cpu = 0;
         get_lppaca()->idle = 0;
 }