diff options
Diffstat (limited to 'drivers/macintosh/via-pmu.c')
| -rw-r--r-- | drivers/macintosh/via-pmu.c | 172 |
1 files changed, 36 insertions, 136 deletions
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c index 6df3f3503e5b..0e233185ad14 100644 --- a/drivers/macintosh/via-pmu.c +++ b/drivers/macintosh/via-pmu.c @@ -202,6 +202,12 @@ static int proc_read_options(char *page, char **start, off_t off, 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", @@ -449,6 +455,10 @@ static int __init via_pmu_start(void) 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; } @@ -1719,108 +1729,6 @@ pmu_present(void) } #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 @@ -2200,37 +2108,34 @@ powerbook_sleep_Core99(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) { @@ -2244,36 +2149,31 @@ powerbook_sleep_3400(void) /* 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; } |