diff options
Diffstat (limited to 'arch/ppc64/kernel/pmac_feature.c')
| -rw-r--r-- | arch/ppc64/kernel/pmac_feature.c | 767 |
1 files changed, 0 insertions, 767 deletions
diff --git a/arch/ppc64/kernel/pmac_feature.c b/arch/ppc64/kernel/pmac_feature.c deleted file mode 100644 index 26075f11db77..000000000000 --- a/arch/ppc64/kernel/pmac_feature.c +++ /dev/null @@ -1,767 +0,0 @@ -/* - * arch/ppc/platforms/pmac_feature.c - * - * Copyright (C) 1996-2001 Paul Mackerras (paulus@cs.anu.edu.au) - * Ben. Herrenschmidt (benh@kernel.crashing.org) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * TODO: - * - * - Replace mdelay with some schedule loop if possible - * - Shorten some obfuscated delays on some routines (like modem - * power) - * - Refcount some clocks (see darwin) - * - Split split split... - * - */ -#include <linux/config.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/spinlock.h> -#include <linux/adb.h> -#include <linux/pmu.h> -#include <linux/ioport.h> -#include <linux/pci.h> -#include <asm/sections.h> -#include <asm/errno.h> -#include <asm/keylargo.h> -#include <asm/uninorth.h> -#include <asm/io.h> -#include <asm/prom.h> -#include <asm/machdep.h> -#include <asm/pmac_feature.h> -#include <asm/dbdma.h> -#include <asm/pci-bridge.h> -#include <asm/pmac_low_i2c.h> - -#undef DEBUG_FEATURE - -#ifdef DEBUG_FEATURE -#define DBG(fmt...) printk(KERN_DEBUG fmt) -#else -#define DBG(fmt...) -#endif - -/* - * We use a single global lock to protect accesses. Each driver has - * to take care of its own locking - */ -static DEFINE_SPINLOCK(feature_lock); - -#define LOCK(flags) spin_lock_irqsave(&feature_lock, flags); -#define UNLOCK(flags) spin_unlock_irqrestore(&feature_lock, flags); - - -/* - * Instance of some macio stuffs - */ -struct macio_chip macio_chips[MAX_MACIO_CHIPS] ; - -struct macio_chip* macio_find(struct device_node* child, int type) -{ - while(child) { - int i; - - for (i=0; i < MAX_MACIO_CHIPS && macio_chips[i].of_node; i++) - if (child == macio_chips[i].of_node && - (!type || macio_chips[i].type == type)) - return &macio_chips[i]; - child = child->parent; - } - return NULL; -} -EXPORT_SYMBOL_GPL(macio_find); - -static const char* macio_names[] = -{ - "Unknown", - "Grand Central", - "OHare", - "OHareII", - "Heathrow", - "Gatwick", - "Paddington", - "Keylargo", - "Pangea", - "Intrepid", - "K2" -}; - - - -/* - * Uninorth reg. access. Note that Uni-N regs are big endian - */ - -#define UN_REG(r) (uninorth_base + ((r) >> 2)) -#define UN_IN(r) (in_be32(UN_REG(r))) -#define UN_OUT(r,v) (out_be32(UN_REG(r), (v))) -#define UN_BIS(r,v) (UN_OUT((r), UN_IN(r) | (v))) -#define UN_BIC(r,v) (UN_OUT((r), UN_IN(r) & ~(v))) - -static struct device_node* uninorth_node; -static u32* uninorth_base; -static u32 uninorth_rev; -static void *u3_ht; - -extern struct device_node *k2_skiplist[2]; - -/* - * For each motherboard family, we have a table of functions pointers - * that handle the various features. - */ - -typedef long (*feature_call)(struct device_node* node, long param, long value); - -struct feature_table_entry { - unsigned int selector; - feature_call function; -}; - -struct pmac_mb_def -{ - const char* model_string; - const char* model_name; - int model_id; - struct feature_table_entry* features; - unsigned long board_flags; -}; -static struct pmac_mb_def pmac_mb; - -/* - * Here are the chip specific feature functions - */ - - -static long g5_read_gpio(struct device_node* node, long param, long value) -{ - struct macio_chip* macio = &macio_chips[0]; - - return MACIO_IN8(param); -} - - -static long g5_write_gpio(struct device_node* node, long param, long value) -{ - struct macio_chip* macio = &macio_chips[0]; - - MACIO_OUT8(param, (u8)(value & 0xff)); - return 0; -} - -static long g5_gmac_enable(struct device_node* node, long param, long value) -{ - struct macio_chip* macio = &macio_chips[0]; - unsigned long flags; - - if (node == NULL) - return -ENODEV; - - LOCK(flags); - if (value) { - MACIO_BIS(KEYLARGO_FCR1, K2_FCR1_GMAC_CLK_ENABLE); - mb(); - k2_skiplist[0] = NULL; - } else { - k2_skiplist[0] = node; - mb(); - MACIO_BIC(KEYLARGO_FCR1, K2_FCR1_GMAC_CLK_ENABLE); - } - - UNLOCK(flags); - mdelay(1); - - return 0; -} - -static long g5_fw_enable(struct device_node* node, long param, long value) -{ - struct macio_chip* macio = &macio_chips[0]; - unsigned long flags; - - if (node == NULL) - return -ENODEV; - - LOCK(flags); - if (value) { - MACIO_BIS(KEYLARGO_FCR1, K2_FCR1_FW_CLK_ENABLE); - mb(); - k2_skiplist[1] = NULL; - } else { - k2_skiplist[1] = node; - mb(); - MACIO_BIC(KEYLARGO_FCR1, K2_FCR1_FW_CLK_ENABLE); - } - - UNLOCK(flags); - mdelay(1); - - return 0; -} - -static long g5_mpic_enable(struct device_node* node, long param, long value) -{ - unsigned long flags; - - if (node->parent == NULL || strcmp(node->parent->name, "u3")) - return 0; - - LOCK(flags); - UN_BIS(U3_TOGGLE_REG, U3_MPIC_RESET | U3_MPIC_OUTPUT_ENABLE); - UNLOCK(flags); - - return 0; -} - -static long g5_eth_phy_reset(struct device_node* node, long param, long value) -{ - struct macio_chip* macio = &macio_chips[0]; - struct device_node *phy; - int need_reset; - - /* - * We must not reset the combo PHYs, only the BCM5221 found in - * the iMac G5. - */ - phy = of_get_next_child(node, NULL); - if (!phy) - return -ENODEV; - need_reset = device_is_compatible(phy, "B5221"); - of_node_put(phy); - if (!need_reset) - return 0; - - /* PHY reset is GPIO 29, not in device-tree unfortunately */ - MACIO_OUT8(K2_GPIO_EXTINT_0 + 29, - KEYLARGO_GPIO_OUTPUT_ENABLE | KEYLARGO_GPIO_OUTOUT_DATA); - /* Thankfully, this is now always called at a time when we can - * schedule by sungem. - */ - msleep(10); - MACIO_OUT8(K2_GPIO_EXTINT_0 + 29, 0); - - return 0; -} - -static long g5_i2s_enable(struct device_node *node, long param, long value) -{ - /* Very crude implementation for now */ - struct macio_chip* macio = &macio_chips[0]; - unsigned long flags; - - if (value == 0) - return 0; /* don't disable yet */ - - LOCK(flags); - MACIO_BIS(KEYLARGO_FCR3, KL3_CLK45_ENABLE | KL3_CLK49_ENABLE | - KL3_I2S0_CLK18_ENABLE); - udelay(10); - MACIO_BIS(KEYLARGO_FCR1, K2_FCR1_I2S0_CELL_ENABLE | - K2_FCR1_I2S0_CLK_ENABLE_BIT | K2_FCR1_I2S0_ENABLE); - udelay(10); - MACIO_BIC(KEYLARGO_FCR1, K2_FCR1_I2S0_RESET); - UNLOCK(flags); - udelay(10); - - return 0; -} - - -#ifdef CONFIG_SMP -static long g5_reset_cpu(struct device_node* node, long param, long value) -{ - unsigned int reset_io = 0; - unsigned long flags; - struct macio_chip* macio; - struct device_node* np; - - macio = &macio_chips[0]; - if (macio->type != macio_keylargo2) - return -ENODEV; - - np = find_path_device("/cpus"); - if (np == NULL) - return -ENODEV; - for (np = np->child; np != NULL; np = np->sibling) { - u32* num = (u32 *)get_property(np, "reg", NULL); - u32* rst = (u32 *)get_property(np, "soft-reset", NULL); - if (num == NULL || rst == NULL) - continue; - if (param == *num) { - reset_io = *rst; - break; - } - } - if (np == NULL || reset_io == 0) - return -ENODEV; - - LOCK(flags); - MACIO_OUT8(reset_io, KEYLARGO_GPIO_OUTPUT_ENABLE); - (void)MACIO_IN8(reset_io); - udelay(1); - MACIO_OUT8(reset_io, 0); - (void)MACIO_IN8(reset_io); - UNLOCK(flags); - - return 0; -} -#endif /* CONFIG_SMP */ - -/* - * This can be called from pmac_smp so isn't static - * - * This takes the second CPU off the bus on dual CPU machines - * running UP - */ -void g5_phy_disable_cpu1(void) -{ - UN_OUT(U3_API_PHY_CONFIG_1, 0); -} - -static long generic_get_mb_info(struct device_node* node, long param, long value) -{ - switch(param) { - case PMAC_MB_INFO_MODEL: - return pmac_mb.model_id; - case PMAC_MB_INFO_FLAGS: - return pmac_mb.board_flags; - case PMAC_MB_INFO_NAME: - /* hack hack hack... but should work */ - *((const char **)value) = pmac_mb.model_name; - return 0; - } - return -EINVAL; -} - - -/* - * Table definitions - */ - -/* Used on any machine - */ -static struct feature_table_entry any_features[] = { - { PMAC_FTR_GET_MB_INFO, generic_get_mb_info }, - { 0, NULL } -}; - -/* G5 features - */ -static struct feature_table_entry g5_features[] = { - { PMAC_FTR_GMAC_ENABLE, g5_gmac_enable }, - { PMAC_FTR_1394_ENABLE, g5_fw_enable }, - { PMAC_FTR_ENABLE_MPIC, g5_mpic_enable }, - { PMAC_FTR_READ_GPIO, g5_read_gpio }, - { PMAC_FTR_WRITE_GPIO, g5_write_gpio }, - { PMAC_FTR_GMAC_PHY_RESET, g5_eth_phy_reset }, - { PMAC_FTR_SOUND_CHIP_ENABLE, g5_i2s_enable }, -#ifdef CONFIG_SMP - { PMAC_FTR_RESET_CPU, g5_reset_cpu }, -#endif /* CONFIG_SMP */ - { 0, NULL } -}; - -static struct pmac_mb_def pmac_mb_defs[] = { - { "PowerMac7,2", "PowerMac G5", - PMAC_TYPE_POWERMAC_G5, g5_features, - 0, - }, - { "PowerMac7,3", "PowerMac G5", - PMAC_TYPE_POWERMAC_G5, g5_features, - 0, - }, - { "PowerMac8,1", "iMac G5", - PMAC_TYPE_IMAC_G5, g5_features, - 0, - }, - { "PowerMac9,1", "PowerMac G5", - PMAC_TYPE_POWERMAC_G5_U3L, g5_features, - 0, - }, - { "RackMac3,1", "XServe G5", - PMAC_TYPE_XSERVE_G5, g5_features, - 0, - }, -}; - -/* - * The toplevel feature_call callback - */ -long pmac_do_feature_call(unsigned int selector, ...) -{ - struct device_node* node; - long param, value; - int i; - feature_call func = NULL; - va_list args; - - if (pmac_mb.features) - for (i=0; pmac_mb.features[i].function; i++) - if (pmac_mb.features[i].selector == selector) { - func = pmac_mb.features[i].function; - break; - } - if (!func) - for (i=0; any_features[i].function; i++) - if (any_features[i].selector == selector) { - func = any_features[i].function; - break; - } - if (!func) - return -ENODEV; - - va_start(args, selector); - node = (struct device_node*)va_arg(args, void*); - param = va_arg(args, long); - value = va_arg(args, long); - va_end(args); - - return func(node, param, value); -} - -static int __init probe_motherboard(void) -{ - int i; - struct macio_chip* macio = &macio_chips[0]; - const char* model = NULL; - struct device_node *dt; - - /* Lookup known motherboard type in device-tree. First try an - * exact match on the "model" property, then try a "compatible" - * match is none is found. - */ - dt = find_devices("device-tree"); - if (dt != NULL) - model = (const char *) get_property(dt, "model", NULL); - for(i=0; model && i<(sizeof(pmac_mb_defs)/sizeof(struct pmac_mb_def)); i++) { - if (strcmp(model, pmac_mb_defs[i].model_string) == 0) { - pmac_mb = pmac_mb_defs[i]; - goto found; - } - } - for(i=0; i<(sizeof(pmac_mb_defs)/sizeof(struct pmac_mb_def)); i++) { - if (machine_is_compatible(pmac_mb_defs[i].model_string)) { - pmac_mb = pmac_mb_defs[i]; - goto found; - } - } - - /* Fallback to selection depending on mac-io chip type */ - switch(macio->type) { - case macio_keylargo2: - pmac_mb.model_id = PMAC_TYPE_UNKNOWN_K2; - pmac_mb.model_name = "Unknown K2-based"; - pmac_mb.features = g5_features; - - default: - return -ENODEV; - } -found: - /* Check for "mobile" machine */ - if (model && (strncmp(model, "PowerBook", 9) == 0 - || strncmp(model, "iBook", 5) == 0)) - pmac_mb.board_flags |= PMAC_MB_MOBILE; - - - printk(KERN_INFO "PowerMac motherboard: %s\n", pmac_mb.model_name); - return 0; -} - -/* Initialize the Core99 UniNorth host bridge and memory controller - */ -static void __init probe_uninorth(void) -{ - uninorth_node = of_find_node_by_name(NULL, "u3"); - if (uninorth_node && uninorth_node->n_addrs > 0) { - /* Small hack until I figure out if parsing in prom.c is correct. I should - * get rid of those pre-parsed junk anyway - */ - unsigned long address = uninorth_node->addrs[0].address; - uninorth_base = ioremap(address, 0x40000); - uninorth_rev = in_be32(UN_REG(UNI_N_VERSION)); - u3_ht = ioremap(address + U3_HT_CONFIG_BASE, 0x1000); - } else - uninorth_node = NULL; - - if (!uninorth_node) - return; - - printk(KERN_INFO "Found U3 memory controller & host bridge, revision: %d\n", - uninorth_rev); - printk(KERN_INFO "Mapped at 0x%08lx\n", (unsigned long)uninorth_base); - -} - -static void __init probe_one_macio(const char* name, const char* compat, int type) -{ - struct device_node* node; - int i; - volatile u32* base; - u32* revp; - - node = find_devices(name); - if (!node || !node->n_addrs) - return; - if (compat) - do { - if (device_is_compatible(node, compat)) - break; - node = node->next; - } while (node); - if (!node) - return; - for(i=0; i<MAX_MACIO_CHIPS; i++) { - if (!macio_chips[i].of_node) - break; - if (macio_chips[i].of_node == node) - return; - } - if (i >= MAX_MACIO_CHIPS) { - printk(KERN_ERR "pmac_feature: Please increase MAX_MACIO_CHIPS !\n"); - printk(KERN_ERR "pmac_feature: %s skipped\n", node->full_name); - return; - } - base = (volatile u32*)ioremap(node->addrs[0].address, node->addrs[0].size); - if (!base) { - printk(KERN_ERR "pmac_feature: Can't map mac-io chip !\n"); - return; - } - if (type == macio_keylargo) { - u32* did = (u32 *)get_property(node, "device-id", NULL); - if (*did == 0x00000025) - type = macio_pangea; - if (*did == 0x0000003e) - type = macio_intrepid; - } - macio_chips[i].of_node = node; - macio_chips[i].type = type; - macio_chips[i].base = base; - macio_chips[i].flags = MACIO_FLAG_SCCB_ON | MACIO_FLAG_SCCB_ON; - macio_chips[i].name = macio_names[type]; - revp = (u32 *)get_property(node, "revision-id", NULL); - if (revp) - macio_chips[i].rev = *revp; - printk(KERN_INFO "Found a %s mac-io controller, rev: %d, mapped at 0x%p\n", - macio_names[type], macio_chips[i].rev, macio_chips[i].base); -} - -static int __init -probe_macios(void) -{ - probe_one_macio("mac-io", "K2-Keylargo", macio_keylargo2); - - macio_chips[0].lbus.index = 0; - macio_chips[1].lbus.index = 1; - - return (macio_chips[0].of_node == NULL) ? -ENODEV : 0; -} - -static void __init -set_initial_features(void) -{ - struct device_node *np; - - if (macio_chips[0].type == macio_keylargo2) { -#ifndef CONFIG_SMP - /* On SMP machines running UP, we have the second CPU eating - * bus cycles. We need to take it off the bus. This is done - * from pmac_smp for SMP kernels running on one CPU - */ - np = of_find_node_by_type(NULL, "cpu"); - if (np != NULL) - np = of_find_node_by_type(np, "cpu"); - if (np != NULL) { - g5_phy_disable_cpu1(); - of_node_put(np); - } -#endif /* CONFIG_SMP */ - /* Enable GMAC for now for PCI probing. It will be disabled - * later on after PCI probe - */ - np = of_find_node_by_name(NULL, "ethernet"); - while(np) { - if (device_is_compatible(np, "K2-GMAC")) - g5_gmac_enable(np, 0, 1); - np = of_find_node_by_name(np, "ethernet"); - } - - /* Enable FW before PCI probe. Will be disabled later on - * Note: We should have a batter way to check that we are - * dealing with uninorth internal cell and not a PCI cell - * on the external PCI. The code below works though. - */ - np = of_find_node_by_name(NULL, "firewire"); - while(np) { - if (device_is_compatible(np, "pci106b,5811")) { - macio_chips[0].flags |= MACIO_FLAG_FW_SUPPORTED; - g5_fw_enable(np, 0, 1); - } - np = of_find_node_by_name(np, "firewire"); - } - } -} - -void __init -pmac_feature_init(void) -{ - /* Detect the UniNorth memory controller */ - probe_uninorth(); - - /* Probe mac-io controllers */ - if (probe_macios()) { - printk(KERN_WARNING "No mac-io chip found\n"); - return; - } - - /* Setup low-level i2c stuffs */ - pmac_init_low_i2c(); - - /* Probe machine type */ - if (probe_motherboard()) - printk(KERN_WARNING "Unknown PowerMac !\n"); - - /* Set some initial features (turn off some chips that will - * be later turned on) - */ - set_initial_features(); -} - -int __init pmac_feature_late_init(void) -{ -#if 0 - struct device_node* np; - - /* Request some resources late */ - if (uninorth_node) - request_OF_resource(uninorth_node, 0, NULL); - np = find_devices("hammerhead"); - if (np) - request_OF_resource(np, 0, NULL); - np = find_devices("interrupt-controller"); - if (np) - request_OF_resource(np, 0, NULL); -#endif - return 0; -} - -device_initcall(pmac_feature_late_init); - -#if 0 -static void dump_HT_speeds(char *name, u32 cfg, u32 frq) -{ - int freqs[16] = { 200,300,400,500,600,800,1000,0,0,0,0,0,0,0,0,0 }; - int bits[8] = { 8,16,0,32,2,4,0,0 }; - int freq = (frq >> 8) & 0xf; - - if (freqs[freq] == 0) - printk("%s: Unknown HT link frequency %x\n", name, freq); - else - printk("%s: %d MHz on main link, (%d in / %d out) bits width\n", - name, freqs[freq], - bits[(cfg >> 28) & 0x7], bits[(cfg >> 24) & 0x7]); -} -#endif - -void __init pmac_check_ht_link(void) -{ -#if 0 /* Disabled for now */ - u32 ufreq, freq, ucfg, cfg; - struct device_node *pcix_node; - struct pci_dn *pdn; - u8 px_bus, px_devfn; - struct pci_controller *px_hose; - - (void)in_be32(u3_ht + U3_HT_LINK_COMMAND); - ucfg = cfg = in_be32(u3_ht + U3_HT_LINK_CONFIG); - ufreq = freq = in_be32(u3_ht + U3_HT_LINK_FREQ); - dump_HT_speeds("U3 HyperTransport", cfg, freq); - - pcix_node = of_find_compatible_node(NULL, "pci", "pci-x"); - if (pcix_node == NULL) { - printk("No PCI-X bridge found\n"); - return; - } - pdn = pcix_node->data; - px_hose = pdn->phb; - px_bus = pdn->busno; - px_devfn = pdn->devfn; - - early_read_config_dword(px_hose, px_bus, px_devfn, 0xc4, &cfg); - early_read_config_dword(px_hose, px_bus, px_devfn, 0xcc, &freq); - dump_HT_speeds("PCI-X HT Uplink", cfg, freq); - early_read_config_dword(px_hose, px_bus, px_devfn, 0xc8, &cfg); - early_read_config_dword(px_hose, px_bus, px_devfn, 0xd0, &freq); - dump_HT_speeds("PCI-X HT Downlink", cfg, freq); -#endif -} - -/* - * Early video resume hook - */ - -static void (*pmac_early_vresume_proc)(void *data); -static void *pmac_early_vresume_data; - -void pmac_set_early_video_resume(void (*proc)(void *data), void *data) -{ - if (_machine != _MACH_Pmac) - return; - preempt_disable(); - pmac_early_vresume_proc = proc; - pmac_early_vresume_data = data; - preempt_enable(); -} -EXPORT_SYMBOL(pmac_set_early_video_resume); - - -/* - * AGP related suspend/resume code - */ - -static struct pci_dev *pmac_agp_bridge; -static int (*pmac_agp_suspend)(struct pci_dev *bridge); -static int (*pmac_agp_resume)(struct pci_dev *bridge); - -void pmac_register_agp_pm(struct pci_dev *bridge, - int (*suspend)(struct pci_dev *bridge), - int (*resume)(struct pci_dev *bridge)) -{ - if (suspend || resume) { - pmac_agp_bridge = bridge; - pmac_agp_suspend = suspend; - pmac_agp_resume = resume; - return; - } - if (bridge != pmac_agp_bridge) - return; - pmac_agp_suspend = pmac_agp_resume = NULL; - return; -} -EXPORT_SYMBOL(pmac_register_agp_pm); - -void pmac_suspend_agp_for_card(struct pci_dev *dev) -{ - if (pmac_agp_bridge == NULL || pmac_agp_suspend == NULL) - return; - if (pmac_agp_bridge->bus != dev->bus) - return; - pmac_agp_suspend(pmac_agp_bridge); -} -EXPORT_SYMBOL(pmac_suspend_agp_for_card); - -void pmac_resume_agp_for_card(struct pci_dev *dev) -{ - if (pmac_agp_bridge == NULL || pmac_agp_resume == NULL) - return; - if (pmac_agp_bridge->bus != dev->bus) - return; - pmac_agp_resume(pmac_agp_bridge); -} -EXPORT_SYMBOL(pmac_resume_agp_for_card); |