* bootup setup stuff..
*/
-#undef DEBUG
-
#include <linux/cpu.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/stddef.h>
#include <linux/unistd.h>
-#include <linux/slab.h>
#include <linux/user.h>
-#include <linux/a.out.h>
#include <linux/tty.h>
#include <linux/major.h>
#include <linux/interrupt.h>
#include <asm/dma.h>
#include <asm/machdep.h>
#include <asm/irq.h>
-#include <asm/kexec.h>
#include <asm/time.h>
#include <asm/nvram.h>
#include "xics.h"
#include <asm/i8259.h>
#include <asm/udbg.h>
#include <asm/smp.h>
+#include <asm/firmware.h>
+#include <asm/eeh.h>
+#include <asm/pSeries_reconfig.h>
#include "plpar_wrappers.h"
-#include "ras.h"
-#include "firmware.h"
-
-#ifdef DEBUG
-#define DBG(fmt...) udbg_printf(fmt)
-#else
-#define DBG(fmt...)
-#endif
+#include "pseries.h"
-/* move those away to a .h */
-extern void smp_init_pseries_mpic(void);
-extern void smp_init_pseries_xics(void);
-extern void find_udbg_vterm(void);
+int CMO_PrPSP = -1;
+int CMO_SecPSP = -1;
+unsigned long CMO_PageSize = (ASM_CONST(1) << IOMMU_PAGE_SHIFT);
+EXPORT_SYMBOL(CMO_PageSize);
int fwnmi_active; /* TRUE if an FWNMI handler is present */
root = of_find_node_by_path("/");
if (root)
- model = get_property(root, "model", NULL);
+ model = of_get_property(root, "model", NULL);
seq_printf(m, "machine\t\t: CHRP %s\n", model);
of_node_put(root);
}
fwnmi_active = 1;
}
-void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc,
- struct pt_regs *regs)
+static void pseries_8259_cascade(unsigned int irq, struct irq_desc *desc)
{
- unsigned int cascade_irq = i8259_irq(regs);
+ unsigned int cascade_irq = i8259_irq();
if (cascade_irq != NO_IRQ)
- generic_handle_irq(cascade_irq, regs);
+ generic_handle_irq(cascade_irq);
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;
np = of_find_node_by_path("/");
- naddr = prom_n_addr_cells(np);
- opprop = get_property(np, "platform-open-pic", &opplen);
+ naddr = of_n_addr_cells(np);
+ opprop = of_get_property(np, "platform-open-pic", &opplen);
if (opprop != 0) {
openpic_addr = of_read_number(opprop, naddr);
printk(KERN_DEBUG "OpenPIC addr: %lx\n", openpic_addr);
mpic_init(mpic);
/* Look for cascade */
- for_each_node_by_type(np, "interrupt-controller")
- if (device_is_compatible(np, "chrp,iic")) {
- cascade = np;
- break;
- }
- if (cascade == NULL)
- return;
-
- cascade_irq = irq_of_parse_and_map(cascade, 0);
- if (cascade == NO_IRQ) {
- printk(KERN_ERR "xics: 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 = get_property(np, "8259-interrupt-acknowledge",
- NULL);
- if (addrp == NULL)
- continue;
- naddr = prom_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)
set = 1UL << 63;
reset = 0;
plpar_hcall_norets(H_PERFMON, set, reset);
-
- /* instruct hypervisor to maintain PMCs */
- if (firmware_has_feature(FW_FEATURE_SPLPAR))
- get_lppaca()->pmcregs_in_use = 1;
}
-#ifdef CONFIG_KEXEC
-static void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
-{
- /* Don't risk a hypervisor call if we're crashing */
- if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
- unsigned long addr;
-
- addr = __pa(get_slb_shadow());
- if (unregister_slb_shadow(hard_smp_processor_id(), addr))
- printk("SLB shadow buffer deregistration of "
- "cpu %u (hw_cpu_id %d) failed\n",
- smp_processor_id(),
- hard_smp_processor_id());
-
- addr = __pa(get_lppaca());
- if (unregister_vpa(hard_smp_processor_id(), addr)) {
- printk("VPA deregistration of cpu %u (hw_cpu_id %d) "
- "failed\n", smp_processor_id(),
- hard_smp_processor_id());
- }
- }
-}
-
-static void pseries_kexec_cpu_down_mpic(int crash_shutdown, int secondary)
-{
- pseries_kexec_cpu_down(crash_shutdown, secondary);
- mpic_teardown_this_cpu(secondary);
-}
-
-static void pseries_kexec_cpu_down_xics(int crash_shutdown, int secondary)
-{
- pseries_kexec_cpu_down(crash_shutdown, secondary);
- xics_teardown_cpu(secondary);
-}
-#endif /* CONFIG_KEXEC */
-
static void __init pseries_discover_pic(void)
{
struct device_node *np;
for (np = NULL; (np = of_find_node_by_name(np,
"interrupt-controller"));) {
- typep = get_property(np, "compatible", NULL);
+ typep = of_get_property(np, "compatible", NULL);
if (strstr(typep, "open-pic")) {
pSeries_mpic_node = of_node_get(np);
ppc_md.init_IRQ = pseries_mpic_init_IRQ;
ppc_md.get_irq = mpic_get_irq;
-#ifdef CONFIG_KEXEC
- ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_mpic;
-#endif
-#ifdef CONFIG_SMP
+ setup_kexec_cpu_down_mpic();
smp_init_pseries_mpic();
-#endif
return;
} else if (strstr(typep, "ppc-xicp")) {
- ppc_md.init_IRQ = xics_init_IRQ;
-#ifdef CONFIG_KEXEC
- ppc_md.kexec_cpu_down = pseries_kexec_cpu_down_xics;
-#endif
-#ifdef CONFIG_SMP
+ ppc_md.init_IRQ = pseries_xics_init_IRQ;
+ setup_kexec_cpu_down_xics();
smp_init_pseries_xics();
-#endif
return;
}
}
" interrupt-controller\n");
}
+static int pci_dn_reconfig_notifier(struct notifier_block *nb, unsigned long action, void *node)
+{
+ struct device_node *np = node;
+ struct pci_dn *pci = NULL;
+ int err = NOTIFY_OK;
+
+ switch (action) {
+ case PSERIES_RECONFIG_ADD:
+ pci = np->parent->data;
+ if (pci)
+ update_dn_pci_info(np, pci->phb);
+ break;
+ default:
+ err = NOTIFY_DONE;
+ break;
+ }
+ return err;
+}
+
+static struct notifier_block pci_dn_reconfig_nb = {
+ .notifier_call = pci_dn_reconfig_notifier,
+};
+
static void __init pSeries_setup_arch(void)
{
/* Discover PIC type and setup ppc_md accordingly */
/* init to some ~sane value until calibrate_delay() runs */
loops_per_jiffy = 50000000;
- if (ROOT_DEV == 0) {
- printk("No ramdisk, default root is /dev/sda2\n");
- ROOT_DEV = Root_SDA2;
- }
-
fwnmi_init();
/* Find and initialize PCI host bridges */
init_pci_config_tokens();
find_and_init_phbs();
+ pSeries_reconfig_notifier_register(&pci_dn_reconfig_nb);
eeh_init();
pSeries_nvram_init();
{
/* Manually leave the kernel version on the panel. */
ppc_md.progress("Linux ppc64\n", 0);
- ppc_md.progress(system_utsname.release, 0);
+ ppc_md.progress(init_utsname()->version, 0);
return 0;
}
arch_initcall(pSeries_init_panel);
-static void pSeries_mach_cpu_die(void)
-{
- local_irq_disable();
- idle_task_exit();
- xics_teardown_cpu(0);
- rtas_stop_self();
- /* Should never get here... */
- BUG();
- for(;;);
-}
-
static int pseries_set_dabr(unsigned long dabr)
{
return plpar_hcall_norets(H_SET_DABR, dabr);
H_DABRX_KERNEL | H_DABRX_USER);
}
+#define CMO_CHARACTERISTICS_TOKEN 44
+#define CMO_MAXLENGTH 1026
+
+/**
+ * fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
+ * handle that here. (Stolen from parse_system_parameter_string)
+ */
+void pSeries_cmo_feature_init(void)
+{
+ char *ptr, *key, *value, *end;
+ int call_status;
+ int page_order = IOMMU_PAGE_SHIFT;
+
+ pr_debug(" -> fw_cmo_feature_init()\n");
+ spin_lock(&rtas_data_buf_lock);
+ memset(rtas_data_buf, 0, RTAS_DATA_BUF_SIZE);
+ call_status = rtas_call(rtas_token("ibm,get-system-parameter"), 3, 1,
+ NULL,
+ CMO_CHARACTERISTICS_TOKEN,
+ __pa(rtas_data_buf),
+ RTAS_DATA_BUF_SIZE);
+
+ if (call_status != 0) {
+ spin_unlock(&rtas_data_buf_lock);
+ pr_debug("CMO not available\n");
+ pr_debug(" <- fw_cmo_feature_init()\n");
+ return;
+ }
+
+ end = rtas_data_buf + CMO_MAXLENGTH - 2;
+ ptr = rtas_data_buf + 2; /* step over strlen value */
+ key = value = ptr;
+
+ while (*ptr && (ptr <= end)) {
+ /* Separate the key and value by replacing '=' with '\0' and
+ * point the value at the string after the '='
+ */
+ if (ptr[0] == '=') {
+ ptr[0] = '\0';
+ value = ptr + 1;
+ } else if (ptr[0] == '\0' || ptr[0] == ',') {
+ /* Terminate the string containing the key/value pair */
+ ptr[0] = '\0';
+
+ if (key == value) {
+ pr_debug("Malformed key/value pair\n");
+ /* Never found a '=', end processing */
+ break;
+ }
+
+ if (0 == strcmp(key, "CMOPageSize"))
+ page_order = simple_strtol(value, NULL, 10);
+ else if (0 == strcmp(key, "PrPSP"))
+ CMO_PrPSP = simple_strtol(value, NULL, 10);
+ else if (0 == strcmp(key, "SecPSP"))
+ CMO_SecPSP = simple_strtol(value, NULL, 10);
+ value = key = ptr + 1;
+ }
+ ptr++;
+ }
+
+ /* Page size is returned as the power of 2 of the page size,
+ * convert to the page size in bytes before returning
+ */
+ CMO_PageSize = 1 << page_order;
+ pr_debug("CMO_PageSize = %lu\n", CMO_PageSize);
+
+ if (CMO_PrPSP != -1 || CMO_SecPSP != -1) {
+ pr_info("CMO enabled\n");
+ pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
+ powerpc_firmware_features |= FW_FEATURE_CMO;
+ } else
+ pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
+ CMO_SecPSP);
+ spin_unlock(&rtas_data_buf_lock);
+ pr_debug(" <- fw_cmo_feature_init()\n");
+}
+
/*
* Early initialization. Relocation is on but do not reference unbolted pages
*/
static void __init pSeries_init_early(void)
{
- DBG(" -> pSeries_init_early()\n");
-
- fw_feature_init();
+ pr_debug(" -> pSeries_init_early()\n");
if (firmware_has_feature(FW_FEATURE_LPAR))
find_udbg_vterm();
else if (firmware_has_feature(FW_FEATURE_XDABR))
ppc_md.set_dabr = pseries_set_xdabr;
+ pSeries_cmo_feature_init();
iommu_init_early_pSeries();
- DBG(" <- pSeries_init_early()\n");
-}
-
-
-static int pSeries_check_legacy_ioport(unsigned int baseport)
-{
- struct device_node *np;
-
-#define I8042_DATA_REG 0x60
-#define FDC_BASE 0x3f0
-
-
- switch(baseport) {
- case I8042_DATA_REG:
- np = of_find_node_by_type(NULL, "8042");
- if (np == NULL)
- return -ENODEV;
- of_node_put(np);
- break;
- case FDC_BASE:
- np = of_find_node_by_type(NULL, "fdc");
- if (np == NULL)
- return -ENODEV;
- of_node_put(np);
- break;
- }
- return 0;
+ pr_debug(" <- pSeries_init_early()\n");
}
/*
const char *uname, int depth,
void *data)
{
+ const char *hypertas;
+ unsigned long len;
+
if (depth != 1 ||
(strcmp(uname, "rtas") != 0 && strcmp(uname, "rtas@0") != 0))
- return 0;
+ return 0;
- if (of_get_flat_dt_prop(node, "ibm,hypertas-functions", NULL) != NULL)
- powerpc_firmware_features |= FW_FEATURE_LPAR;
+ hypertas = of_get_flat_dt_prop(node, "ibm,hypertas-functions", &len);
+ if (!hypertas)
+ return 1;
- if (firmware_has_feature(FW_FEATURE_LPAR))
- hpte_init_lpar();
- else
- hpte_init_native();
+ powerpc_firmware_features |= FW_FEATURE_LPAR;
+ fw_feature_init(hypertas, len);
- return 1;
+ return 1;
}
static int __init pSeries_probe(void)
{
unsigned long root = of_get_flat_dt_root();
- char *dtype = of_get_flat_dt_prop(of_get_flat_dt_root(),
- "device_type", NULL);
+ char *dtype = of_get_flat_dt_prop(root, "device_type", NULL);
+
if (dtype == NULL)
return 0;
if (strcmp(dtype, "chrp"))
of_flat_dt_is_compatible(root, "IBM,CBEA"))
return 0;
- DBG("pSeries detected, looking for LPAR capability...\n");
+ pr_debug("pSeries detected, looking for LPAR capability...\n");
/* Now try to figure out if we are running on LPAR */
of_scan_flat_dt(pSeries_probe_hypertas, NULL);
- DBG("Machine is%s LPAR !\n",
- (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not");
+ if (firmware_has_feature(FW_FEATURE_LPAR))
+ hpte_init_lpar();
+ else
+ hpte_init_native();
+
+ pr_debug("Machine is%s LPAR !\n",
+ (powerpc_firmware_features & FW_FEATURE_LPAR) ? "" : " not");
return 1;
}
{
unsigned int cpu = smp_processor_id();
unsigned long start_snooze;
- unsigned long *smt_snooze_delay = &__get_cpu_var(smt_snooze_delay);
+ unsigned long in_purr, out_purr;
/*
* Indicate to the HV that we are idle. Now would be
* a good time to find other work to dispatch.
*/
get_lppaca()->idle = 1;
+ get_lppaca()->donate_dedicated_cpu = 1;
+ in_purr = mfspr(SPRN_PURR);
/*
* We come in with interrupts disabled, and need_resched()
* has been checked recently. If we should poll for a little
* while, do so.
*/
- if (*smt_snooze_delay) {
+ if (__get_cpu_var(smt_snooze_delay)) {
start_snooze = get_tb() +
- *smt_snooze_delay * tb_ticks_per_usec;
+ __get_cpu_var(smt_snooze_delay) * tb_ticks_per_usec;
local_irq_enable();
set_thread_flag(TIF_POLLING_NRFLAG);
goto out;
}
- /*
- * If not SMT, cede processor. If CPU is running SMT
- * cede if the other thread is not idle, so that it can
- * go single-threaded. If the other thread is idle,
- * we ask the hypervisor if it has pending work it
- * wants to do and cede if it does. Otherwise we keep
- * polling in order to reduce interrupt latency.
- *
- * Doing the cede when the other thread is active will
- * result in this thread going dormant, meaning the other
- * thread gets to run in single-threaded (ST) mode, which
- * is slightly faster than SMT mode with this thread at
- * very low priority. The cede enables interrupts, which
- * doesn't matter here.
- */
- if (!cpu_has_feature(CPU_FTR_SMT) || !lppaca[cpu ^ 1].idle
- || poll_pending() == H_PENDING)
- cede_processor();
+ cede_processor();
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;
}
return PCI_PROBE_NORMAL;
}
+/**
+ * pSeries_power_off - tell firmware about how to power off the system.
+ *
+ * This function calls either the power-off rtas token in normal cases
+ * or the ibm,power-off-ups token (if present & requested) in case of
+ * a power failure. If power-off token is used, power on will only be
+ * possible with power button press. If ibm,power-off-ups token is used
+ * it will allow auto poweron after power is restored.
+ */
+static void pSeries_power_off(void)
+{
+ int rc;
+ int rtas_poweroff_ups_token = rtas_token("ibm,power-off-ups");
+
+ if (rtas_flash_term_hook)
+ rtas_flash_term_hook(SYS_POWER_OFF);
+
+ if (rtas_poweron_auto == 0 ||
+ rtas_poweroff_ups_token == RTAS_UNKNOWN_SERVICE) {
+ rc = rtas_call(rtas_token("power-off"), 2, 1, NULL, -1, -1);
+ printk(KERN_INFO "RTAS power-off returned %d\n", rc);
+ } else {
+ rc = rtas_call(rtas_poweroff_ups_token, 0, 1, NULL);
+ printk(KERN_INFO "RTAS ibm,power-off-ups returned %d\n", rc);
+ }
+ for (;;);
+}
+
+#ifndef CONFIG_PCI
+void pSeries_final_fixup(void) { }
+#endif
+
define_machine(pseries) {
.name = "pSeries",
.probe = pSeries_probe,
.log_error = pSeries_log_error,
.pcibios_fixup = pSeries_final_fixup,
.pci_probe_mode = pSeries_pci_probe_mode,
- .irq_bus_setup = pSeries_irq_bus_setup,
.restart = rtas_restart,
- .power_off = rtas_power_off,
+ .power_off = pSeries_power_off,
.halt = rtas_halt,
.panic = rtas_os_term,
- .cpu_die = pSeries_mach_cpu_die,
.get_boot_time = rtas_get_boot_time,
.get_rtc_time = rtas_get_rtc_time,
.set_rtc_time = rtas_set_rtc_time,
.calibrate_decr = generic_calibrate_decr,
.progress = rtas_progress,
- .check_legacy_ioport = pSeries_check_legacy_ioport,
.system_reset_exception = pSeries_system_reset_exception,
.machine_check_exception = pSeries_machine_check_exception,
-#ifdef CONFIG_KEXEC
- .machine_kexec = default_machine_kexec,
- .machine_kexec_prepare = default_machine_kexec_prepare,
- .machine_crash_shutdown = default_machine_crash_shutdown,
-#endif
};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff