static int proc_write_options(struct file *file, const char __user *buffer,
unsigned long count, void *data);
+#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
+static void powerbook_sleep_init_3400(void);
+#else
+#define powerbook_sleep_init_3400() do { } while (0)
+#endif
+
#ifdef CONFIG_ADB
struct adb_driver via_pmu_driver = {
"PMU",
pmu_poll();
} while (pmu_state != idle);
+ /* Do allocations and ioremaps that will be needed for sleep */
+ if (pmu_kind == PMU_OHARE_BASED)
+ powerbook_sleep_init_3400();
+
return 0;
}
}
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
-/*
- * This struct is used to store config register values for
- * PCI devices which may get powered off when we sleep.
- */
-static struct pci_save {
- u16 command;
- u16 cache_lat;
- u16 intr;
- u32 rom_address;
-} *pbook_pci_saves;
-static int pbook_npci_saves;
-
-static void
-pbook_alloc_pci_save(void)
-{
- int npci;
- struct pci_dev *pd = NULL;
-
- npci = 0;
- while ((pd = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
- ++npci;
- }
- if (npci == 0)
- return;
- pbook_pci_saves = (struct pci_save *)
- kmalloc(npci * sizeof(struct pci_save), GFP_KERNEL);
- pbook_npci_saves = npci;
-}
-
-static void
-pbook_free_pci_save(void)
-{
- if (pbook_pci_saves == NULL)
- return;
- kfree(pbook_pci_saves);
- pbook_pci_saves = NULL;
- pbook_npci_saves = 0;
-}
-
-static void
-pbook_pci_save(void)
-{
- struct pci_save *ps = pbook_pci_saves;
- struct pci_dev *pd = NULL;
- int npci = pbook_npci_saves;
-
- if (ps == NULL)
- return;
-
- while ((pd = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
- if (npci-- == 0) {
- pci_dev_put(pd);
- return;
- }
- pci_read_config_word(pd, PCI_COMMAND, &ps->command);
- pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat);
- pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr);
- pci_read_config_dword(pd, PCI_ROM_ADDRESS, &ps->rom_address);
- ++ps;
- }
-}
-
-/* For this to work, we must take care of a few things: If gmac was enabled
- * during boot, it will be in the pci dev list. If it's disabled at this point
- * (and it will probably be), then you can't access it's config space.
- */
-static void
-pbook_pci_restore(void)
-{
- u16 cmd;
- struct pci_save *ps = pbook_pci_saves - 1;
- struct pci_dev *pd = NULL;
- int npci = pbook_npci_saves;
- int j;
-
- while ((pd = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) {
- if (npci-- == 0)
- return;
- ps++;
- if (ps->command == 0)
- continue;
- pci_read_config_word(pd, PCI_COMMAND, &cmd);
- if ((ps->command & ~cmd) == 0)
- continue;
- switch (pd->hdr_type) {
- case PCI_HEADER_TYPE_NORMAL:
- for (j = 0; j < 6; ++j)
- pci_write_config_dword(pd,
- PCI_BASE_ADDRESS_0 + j*4,
- pd->resource[j].start);
- pci_write_config_dword(pd, PCI_ROM_ADDRESS,
- ps->rom_address);
- pci_write_config_word(pd, PCI_CACHE_LINE_SIZE,
- ps->cache_lat);
- pci_write_config_word(pd, PCI_INTERRUPT_LINE,
- ps->intr);
- pci_write_config_word(pd, PCI_COMMAND, ps->command);
- break;
- }
- }
-}
-
#ifdef DEBUG_SLEEP
/* N.B. This doesn't work on the 3400 */
void
#define PB3400_MEM_CTRL 0xf8000000
#define PB3400_MEM_CTRL_SLEEP 0x70
-static int
-powerbook_sleep_3400(void)
+static void __iomem *pb3400_mem_ctrl;
+
+static void powerbook_sleep_init_3400(void)
+{
+ /* map in the memory controller registers */
+ pb3400_mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
+ if (pb3400_mem_ctrl == NULL)
+ printk(KERN_WARNING "ioremap failed: sleep won't be possible");
+}
+
+static int powerbook_sleep_3400(void)
{
int ret, i, x;
unsigned int hid0;
- unsigned long p;
+ unsigned long msr;
struct adb_request sleep_req;
- void __iomem *mem_ctrl;
unsigned int __iomem *mem_ctrl_sleep;
- /* first map in the memory controller registers */
- mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100);
- if (mem_ctrl == NULL) {
- printk("powerbook_sleep_3400: ioremap failed\n");
+ if (pb3400_mem_ctrl == NULL)
return -ENOMEM;
- }
- mem_ctrl_sleep = mem_ctrl + PB3400_MEM_CTRL_SLEEP;
-
- /* Allocate room for PCI save */
- pbook_alloc_pci_save();
+ mem_ctrl_sleep = pb3400_mem_ctrl + PB3400_MEM_CTRL_SLEEP;
ret = pmac_suspend_devices();
if (ret) {
- pbook_free_pci_save();
printk(KERN_ERR "Sleep rejected by devices\n");
return ret;
}
- /* Save the state of PCI config space for some slots */
- pbook_pci_save();
-
/* Set the memory controller to keep the memory refreshed
while we're asleep */
for (i = 0x403f; i >= 0x4000; --i) {
/* Ask the PMU to put us to sleep */
pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T');
- while (!sleep_req.complete)
- mb();
+ pmu_wait_complete(&sleep_req);
+ pmu_unlock();
- pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1);
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1);
- /* displacement-flush the L2 cache - necessary? */
- for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000)
- i = *(volatile int *)p;
asleep = 1;
/* Put the CPU into sleep mode */
hid0 = mfspr(SPRN_HID0);
hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP;
mtspr(SPRN_HID0, hid0);
- mtmsr(mfmsr() | MSR_POW | MSR_EE);
- udelay(10);
+ local_irq_enable();
+ msr = mfmsr() | MSR_POW;
+ while (asleep) {
+ mb();
+ mtmsr(msr);
+ isync();
+ }
+ local_irq_disable();
/* OK, we're awake again, start restoring things */
out_be32(mem_ctrl_sleep, 0x3f);
- pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0);
- pbook_pci_restore();
- pmu_unlock();
-
- /* wait for the PMU interrupt sequence to complete */
- while (asleep)
- mb();
+ pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0);
pmac_wakeup_devices();
- pbook_free_pci_save();
- iounmap(mem_ctrl);
return 0;
}
projects / linux-2.6-omap-h63xx.git / blobdiff