diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-22 22:11:30 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-22 22:11:30 -0700 |
commit | 45c091bb2d453ce4a8b06cf19872ec7a77fc4799 (patch) | |
tree | 06fb2e05518ebfba163f8424e028e7faf5672d66 /arch/powerpc/platforms/iseries/dt.c | |
parent | d588fcbe5a7ba8bba2cebf7799ab2d573717a806 (diff) | |
parent | 2191fe3e39159e3375f4b7ec1420df149f154101 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (139 commits)
[POWERPC] re-enable OProfile for iSeries, using timer interrupt
[POWERPC] support ibm,extended-*-frequency properties
[POWERPC] Extra sanity check in EEH code
[POWERPC] Dont look for class-code in pci children
[POWERPC] Fix mdelay badness on shared processor partitions
[POWERPC] disable floating point exceptions for init
[POWERPC] Unify ppc syscall tables
[POWERPC] mpic: add support for serial mode interrupts
[POWERPC] pseries: Print PCI slot location code on failure
[POWERPC] spufs: one more fix for 64k pages
[POWERPC] spufs: fail spu_create with invalid flags
[POWERPC] spufs: clear class2 interrupt status before wakeup
[POWERPC] spufs: fix Makefile for "make clean"
[POWERPC] spufs: remove stop_code from struct spu
[POWERPC] spufs: fix spu irq affinity setting
[POWERPC] spufs: further abstract priv1 register access
[POWERPC] spufs: split the Cell BE support into generic and platform dependant parts
[POWERPC] spufs: dont try to access SPE channel 1 count
[POWERPC] spufs: use kzalloc in create_spu
[POWERPC] spufs: fix initial state of wbox file
...
Manually resolved conflicts in:
drivers/net/phy/Makefile
include/asm-powerpc/spu.h
Diffstat (limited to 'arch/powerpc/platforms/iseries/dt.c')
-rw-r--r-- | arch/powerpc/platforms/iseries/dt.c | 615 |
1 files changed, 615 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/iseries/dt.c b/arch/powerpc/platforms/iseries/dt.c new file mode 100644 index 00000000000..d3444aabe76 --- /dev/null +++ b/arch/powerpc/platforms/iseries/dt.c @@ -0,0 +1,615 @@ +/* + * Copyright (c) 2005-2006 Michael Ellerman, IBM Corporation + * + * Description: + * This file contains all the routines to build a flattened device + * tree for a legacy iSeries machine. + * + * 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. + */ + +#undef DEBUG + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/pci_regs.h> +#include <linux/pci_ids.h> +#include <linux/threads.h> +#include <linux/bitops.h> +#include <linux/string.h> +#include <linux/kernel.h> +#include <linux/if_ether.h> /* ETH_ALEN */ + +#include <asm/machdep.h> +#include <asm/prom.h> +#include <asm/lppaca.h> +#include <asm/cputable.h> +#include <asm/abs_addr.h> +#include <asm/system.h> +#include <asm/iseries/hv_types.h> +#include <asm/iseries/hv_lp_config.h> +#include <asm/iseries/hv_call_xm.h> +#include <asm/iseries/it_exp_vpd_panel.h> +#include <asm/udbg.h> + +#include "processor_vpd.h" +#include "call_hpt.h" +#include "call_pci.h" +#include "pci.h" + +#ifdef DEBUG +#define DBG(fmt...) udbg_printf(fmt) +#else +#define DBG(fmt...) +#endif + +/* + * These are created by the linker script at the start and end + * of the section containing all the strings from this file. + */ +extern char __dt_strings_start[]; +extern char __dt_strings_end[]; + +struct iseries_flat_dt { + struct boot_param_header header; + u64 reserve_map[2]; +}; + +static void * __initdata dt_data; + +/* + * Putting these strings here keeps them out of the section + * that we rename to .dt_strings using objcopy and capture + * for the strings blob of the flattened device tree. + */ +static char __initdata device_type_cpu[] = "cpu"; +static char __initdata device_type_memory[] = "memory"; +static char __initdata device_type_serial[] = "serial"; +static char __initdata device_type_network[] = "network"; +static char __initdata device_type_block[] = "block"; +static char __initdata device_type_byte[] = "byte"; +static char __initdata device_type_pci[] = "pci"; +static char __initdata device_type_vdevice[] = "vdevice"; +static char __initdata device_type_vscsi[] = "vscsi"; + +static struct iseries_flat_dt * __init dt_init(void) +{ + struct iseries_flat_dt *dt; + unsigned long str_len; + + str_len = __dt_strings_end - __dt_strings_start; + dt = (struct iseries_flat_dt *)ALIGN(klimit, 8); + dt->header.off_mem_rsvmap = + offsetof(struct iseries_flat_dt, reserve_map); + dt->header.off_dt_strings = ALIGN(sizeof(*dt), 8); + dt->header.off_dt_struct = dt->header.off_dt_strings + + ALIGN(str_len, 8); + dt_data = (void *)((unsigned long)dt + dt->header.off_dt_struct); + dt->header.dt_strings_size = str_len; + + /* There is no notion of hardware cpu id on iSeries */ + dt->header.boot_cpuid_phys = smp_processor_id(); + + memcpy((char *)dt + dt->header.off_dt_strings, __dt_strings_start, + str_len); + + dt->header.magic = OF_DT_HEADER; + dt->header.version = 0x10; + dt->header.last_comp_version = 0x10; + + dt->reserve_map[0] = 0; + dt->reserve_map[1] = 0; + + return dt; +} + +static void __init dt_push_u32(struct iseries_flat_dt *dt, u32 value) +{ + *((u32 *)dt_data) = value; + dt_data += sizeof(u32); +} + +#ifdef notyet +static void __init dt_push_u64(struct iseries_flat_dt *dt, u64 value) +{ + *((u64 *)dt_data) = value; + dt_data += sizeof(u64); +} +#endif + +static void __init dt_push_bytes(struct iseries_flat_dt *dt, const char *data, + int len) +{ + memcpy(dt_data, data, len); + dt_data += ALIGN(len, 4); +} + +static void __init dt_start_node(struct iseries_flat_dt *dt, const char *name) +{ + dt_push_u32(dt, OF_DT_BEGIN_NODE); + dt_push_bytes(dt, name, strlen(name) + 1); +} + +#define dt_end_node(dt) dt_push_u32(dt, OF_DT_END_NODE) + +static void __init dt_prop(struct iseries_flat_dt *dt, const char *name, + const void *data, int len) +{ + unsigned long offset; + + dt_push_u32(dt, OF_DT_PROP); + + /* Length of the data */ + dt_push_u32(dt, len); + + offset = name - __dt_strings_start; + + /* The offset of the properties name in the string blob. */ + dt_push_u32(dt, (u32)offset); + + /* The actual data. */ + dt_push_bytes(dt, data, len); +} + +static void __init dt_prop_str(struct iseries_flat_dt *dt, const char *name, + const char *data) +{ + dt_prop(dt, name, data, strlen(data) + 1); /* + 1 for NULL */ +} + +static void __init dt_prop_u32(struct iseries_flat_dt *dt, const char *name, + u32 data) +{ + dt_prop(dt, name, &data, sizeof(u32)); +} + +#ifdef notyet +static void __init dt_prop_u64(struct iseries_flat_dt *dt, const char *name, + u64 data) +{ + dt_prop(dt, name, &data, sizeof(u64)); +} +#endif + +static void __init dt_prop_u64_list(struct iseries_flat_dt *dt, + const char *name, u64 *data, int n) +{ + dt_prop(dt, name, data, sizeof(u64) * n); +} + +static void __init dt_prop_u32_list(struct iseries_flat_dt *dt, + const char *name, u32 *data, int n) +{ + dt_prop(dt, name, data, sizeof(u32) * n); +} + +#ifdef notyet +static void __init dt_prop_empty(struct iseries_flat_dt *dt, const char *name) +{ + dt_prop(dt, name, NULL, 0); +} +#endif + +static void __init dt_cpus(struct iseries_flat_dt *dt) +{ + unsigned char buf[32]; + unsigned char *p; + unsigned int i, index; + struct IoHriProcessorVpd *d; + u32 pft_size[2]; + + /* yuck */ + snprintf(buf, 32, "PowerPC,%s", cur_cpu_spec->cpu_name); + p = strchr(buf, ' '); + if (!p) p = buf + strlen(buf); + + dt_start_node(dt, "cpus"); + dt_prop_u32(dt, "#address-cells", 1); + dt_prop_u32(dt, "#size-cells", 0); + + pft_size[0] = 0; /* NUMA CEC cookie, 0 for non NUMA */ + pft_size[1] = __ilog2(HvCallHpt_getHptPages() * HW_PAGE_SIZE); + + for (i = 0; i < NR_CPUS; i++) { + if (lppaca[i].dyn_proc_status >= 2) + continue; + + snprintf(p, 32 - (p - buf), "@%d", i); + dt_start_node(dt, buf); + + dt_prop_str(dt, "device_type", device_type_cpu); + + index = lppaca[i].dyn_hv_phys_proc_index; + d = &xIoHriProcessorVpd[index]; + + dt_prop_u32(dt, "i-cache-size", d->xInstCacheSize * 1024); + dt_prop_u32(dt, "i-cache-line-size", d->xInstCacheOperandSize); + + dt_prop_u32(dt, "d-cache-size", d->xDataL1CacheSizeKB * 1024); + dt_prop_u32(dt, "d-cache-line-size", d->xDataCacheOperandSize); + + /* magic conversions to Hz copied from old code */ + dt_prop_u32(dt, "clock-frequency", + ((1UL << 34) * 1000000) / d->xProcFreq); + dt_prop_u32(dt, "timebase-frequency", + ((1UL << 32) * 1000000) / d->xTimeBaseFreq); + + dt_prop_u32(dt, "reg", i); + + dt_prop_u32_list(dt, "ibm,pft-size", pft_size, 2); + + dt_end_node(dt); + } + + dt_end_node(dt); +} + +static void __init dt_model(struct iseries_flat_dt *dt) +{ + char buf[16] = "IBM,"; + + /* "IBM," + mfgId[2:3] + systemSerial[1:5] */ + strne2a(buf + 4, xItExtVpdPanel.mfgID + 2, 2); + strne2a(buf + 6, xItExtVpdPanel.systemSerial + 1, 5); + buf[11] = '\0'; + dt_prop_str(dt, "system-id", buf); + + /* "IBM," + machineType[0:4] */ + strne2a(buf + 4, xItExtVpdPanel.machineType, 4); + buf[8] = '\0'; + dt_prop_str(dt, "model", buf); + + dt_prop_str(dt, "compatible", "IBM,iSeries"); +} + +static void __init dt_do_vdevice(struct iseries_flat_dt *dt, + const char *name, u32 reg, int unit, + const char *type, const char *compat, int end) +{ + char buf[32]; + + snprintf(buf, 32, "%s@%08x", name, reg + ((unit >= 0) ? unit : 0)); + dt_start_node(dt, buf); + dt_prop_str(dt, "device_type", type); + if (compat) + dt_prop_str(dt, "compatible", compat); + dt_prop_u32(dt, "reg", reg + ((unit >= 0) ? unit : 0)); + if (unit >= 0) + dt_prop_u32(dt, "linux,unit_address", unit); + if (end) + dt_end_node(dt); +} + +static void __init dt_vdevices(struct iseries_flat_dt *dt) +{ + u32 reg = 0; + HvLpIndexMap vlan_map; + int i; + + dt_start_node(dt, "vdevice"); + dt_prop_str(dt, "device_type", device_type_vdevice); + dt_prop_str(dt, "compatible", "IBM,iSeries-vdevice"); + dt_prop_u32(dt, "#address-cells", 1); + dt_prop_u32(dt, "#size-cells", 0); + + dt_do_vdevice(dt, "vty", reg, -1, device_type_serial, NULL, 1); + reg++; + + dt_do_vdevice(dt, "v-scsi", reg, -1, device_type_vscsi, + "IBM,v-scsi", 1); + reg++; + + vlan_map = HvLpConfig_getVirtualLanIndexMap(); + for (i = 0; i < HVMAXARCHITECTEDVIRTUALLANS; i++) { + unsigned char mac_addr[ETH_ALEN]; + + if ((vlan_map & (0x8000 >> i)) == 0) + continue; + dt_do_vdevice(dt, "l-lan", reg, i, device_type_network, + "IBM,iSeries-l-lan", 0); + mac_addr[0] = 0x02; + mac_addr[1] = 0x01; + mac_addr[2] = 0xff; + mac_addr[3] = i; + mac_addr[4] = 0xff; + mac_addr[5] = HvLpConfig_getLpIndex_outline(); + dt_prop(dt, "local-mac-address", (char *)mac_addr, ETH_ALEN); + dt_prop(dt, "mac-address", (char *)mac_addr, ETH_ALEN); + dt_prop_u32(dt, "max-frame-size", 9000); + dt_prop_u32(dt, "address-bits", 48); + + dt_end_node(dt); + } + reg += HVMAXARCHITECTEDVIRTUALLANS; + + for (i = 0; i < HVMAXARCHITECTEDVIRTUALDISKS; i++) + dt_do_vdevice(dt, "viodasd", reg, i, device_type_block, + "IBM,iSeries-viodasd", 1); + reg += HVMAXARCHITECTEDVIRTUALDISKS; + + for (i = 0; i < HVMAXARCHITECTEDVIRTUALCDROMS; i++) + dt_do_vdevice(dt, "viocd", reg, i, device_type_block, + "IBM,iSeries-viocd", 1); + reg += HVMAXARCHITECTEDVIRTUALCDROMS; + + for (i = 0; i < HVMAXARCHITECTEDVIRTUALTAPES; i++) + dt_do_vdevice(dt, "viotape", reg, i, device_type_byte, + "IBM,iSeries-viotape", 1); + + dt_end_node(dt); +} + +struct pci_class_name { + u16 code; + const char *name; + const char *type; +}; + +static struct pci_class_name __initdata pci_class_name[] = { + { PCI_CLASS_NETWORK_ETHERNET, "ethernet", device_type_network }, +}; + +static struct pci_class_name * __init dt_find_pci_class_name(u16 class_code) +{ + struct pci_class_name *cp; + + for (cp = pci_class_name; + cp < &pci_class_name[ARRAY_SIZE(pci_class_name)]; cp++) + if (cp->code == class_code) + return cp; + return NULL; +} + +/* + * This assumes that the node slot is always on the primary bus! + */ +static void __init scan_bridge_slot(struct iseries_flat_dt *dt, + HvBusNumber bus, struct HvCallPci_BridgeInfo *bridge_info) +{ + HvSubBusNumber sub_bus = bridge_info->subBusNumber; + u16 vendor_id; + u16 device_id; + u32 class_id; + int err; + char buf[32]; + u32 reg[5]; + int id_sel = ISERIES_GET_DEVICE_FROM_SUBBUS(sub_bus); + int function = ISERIES_GET_FUNCTION_FROM_SUBBUS(sub_bus); + HvAgentId eads_id_sel = ISERIES_PCI_AGENTID(id_sel, function); + u8 devfn; + struct pci_class_name *cp; + + /* + * Connect all functions of any device found. + */ + for (id_sel = 1; id_sel <= bridge_info->maxAgents; id_sel++) { + for (function = 0; function < 8; function++) { + HvAgentId agent_id = ISERIES_PCI_AGENTID(id_sel, + function); + err = HvCallXm_connectBusUnit(bus, sub_bus, + agent_id, 0); + if (err) { + if (err != 0x302) + DBG("connectBusUnit(%x, %x, %x) %x\n", + bus, sub_bus, agent_id, err); + continue; + } + + err = HvCallPci_configLoad16(bus, sub_bus, agent_id, + PCI_VENDOR_ID, &vendor_id); + if (err) { + DBG("ReadVendor(%x, %x, %x) %x\n", + bus, sub_bus, agent_id, err); + continue; + } + err = HvCallPci_configLoad16(bus, sub_bus, agent_id, + PCI_DEVICE_ID, &device_id); + if (err) { + DBG("ReadDevice(%x, %x, %x) %x\n", + bus, sub_bus, agent_id, err); + continue; + } + err = HvCallPci_configLoad32(bus, sub_bus, agent_id, + PCI_CLASS_REVISION , &class_id); + if (err) { + DBG("ReadClass(%x, %x, %x) %x\n", + bus, sub_bus, agent_id, err); + continue; + } + + devfn = PCI_DEVFN(ISERIES_ENCODE_DEVICE(eads_id_sel), + function); + cp = dt_find_pci_class_name(class_id >> 16); + if (cp && cp->name) + strncpy(buf, cp->name, sizeof(buf) - 1); + else + snprintf(buf, sizeof(buf), "pci%x,%x", + vendor_id, device_id); + buf[sizeof(buf) - 1] = '\0'; + snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), + "@%x", PCI_SLOT(devfn)); + buf[sizeof(buf) - 1] = '\0'; + if (function != 0) + snprintf(buf + strlen(buf), + sizeof(buf) - strlen(buf), + ",%x", function); + dt_start_node(dt, buf); + reg[0] = (bus << 16) | (devfn << 8); + reg[1] = 0; + reg[2] = 0; + reg[3] = 0; + reg[4] = 0; + dt_prop_u32_list(dt, "reg", reg, 5); + if (cp && (cp->type || cp->name)) + dt_prop_str(dt, "device_type", + cp->type ? cp->type : cp->name); + dt_prop_u32(dt, "vendor-id", vendor_id); + dt_prop_u32(dt, "device-id", device_id); + dt_prop_u32(dt, "class-code", class_id >> 8); + dt_prop_u32(dt, "revision-id", class_id & 0xff); + dt_prop_u32(dt, "linux,subbus", sub_bus); + dt_prop_u32(dt, "linux,agent-id", agent_id); + dt_prop_u32(dt, "linux,logical-slot-number", + bridge_info->logicalSlotNumber); + dt_end_node(dt); + + } + } +} + +static void __init scan_bridge(struct iseries_flat_dt *dt, HvBusNumber bus, + HvSubBusNumber sub_bus, int id_sel) +{ + struct HvCallPci_BridgeInfo bridge_info; + HvAgentId agent_id; + int function; + int ret; + + /* Note: hvSubBus and irq is always be 0 at this level! */ + for (function = 0; function < 8; ++function) { + agent_id = ISERIES_PCI_AGENTID(id_sel, function); + ret = HvCallXm_connectBusUnit(bus, sub_bus, agent_id, 0); + if (ret != 0) { + if (ret != 0xb) + DBG("connectBusUnit(%x, %x, %x) %x\n", + bus, sub_bus, agent_id, ret); + continue; + } + DBG("found device at bus %d idsel %d func %d (AgentId %x)\n", + bus, id_sel, function, agent_id); + ret = HvCallPci_getBusUnitInfo(bus, sub_bus, agent_id, + iseries_hv_addr(&bridge_info), + sizeof(struct HvCallPci_BridgeInfo)); + if (ret != 0) + continue; + DBG("bridge info: type %x subbus %x " + "maxAgents %x maxsubbus %x logslot %x\n", + bridge_info.busUnitInfo.deviceType, + bridge_info.subBusNumber, + bridge_info.maxAgents, + bridge_info.maxSubBusNumber, + bridge_info.logicalSlotNumber); + if (bridge_info.busUnitInfo.deviceType == + HvCallPci_BridgeDevice) + scan_bridge_slot(dt, bus, &bridge_info); + else + DBG("PCI: Invalid Bridge Configuration(0x%02X)", + bridge_info.busUnitInfo.deviceType); + } +} + +static void __init scan_phb(struct iseries_flat_dt *dt, HvBusNumber bus) +{ + struct HvCallPci_DeviceInfo dev_info; + const HvSubBusNumber sub_bus = 0; /* EADs is always 0. */ + int err; + int id_sel; + const int max_agents = 8; + + /* + * Probe for EADs Bridges + */ + for (id_sel = 1; id_sel < max_agents; ++id_sel) { + err = HvCallPci_getDeviceInfo(bus, sub_bus, id_sel, + iseries_hv_addr(&dev_info), + sizeof(struct HvCallPci_DeviceInfo)); + if (err) { + if (err != 0x302) + DBG("getDeviceInfo(%x, %x, %x) %x\n", + bus, sub_bus, id_sel, err); + continue; + } + if (dev_info.deviceType != HvCallPci_NodeDevice) { + DBG("PCI: Invalid System Configuration" + "(0x%02X) for bus 0x%02x id 0x%02x.\n", + dev_info.deviceType, bus, id_sel); + continue; + } + scan_bridge(dt, bus, sub_bus, id_sel); + } +} + +static void __init dt_pci_devices(struct iseries_flat_dt *dt) +{ + HvBusNumber bus; + char buf[32]; + u32 buses[2]; + int phb_num = 0; + + /* Check all possible buses. */ + for (bus = 0; bus < 256; bus++) { + int err = HvCallXm_testBus(bus); + + if (err) { + /* + * Check for Unexpected Return code, a clue that + * something has gone wrong. + */ + if (err != 0x0301) + DBG("Unexpected Return on Probe(0x%02X) " + "0x%04X\n", bus, err); + continue; + } + DBG("bus %d appears to exist\n", bus); + snprintf(buf, 32, "pci@%d", phb_num); + dt_start_node(dt, buf); + dt_prop_str(dt, "device_type", device_type_pci); + dt_prop_str(dt, "compatible", "IBM,iSeries-Logical-PHB"); + dt_prop_u32(dt, "#address-cells", 3); + dt_prop_u32(dt, "#size-cells", 2); + buses[0] = buses[1] = bus; + dt_prop_u32_list(dt, "bus-range", buses, 2); + scan_phb(dt, bus); + dt_end_node(dt); + phb_num++; + } +} + +static void dt_finish(struct iseries_flat_dt *dt) +{ + dt_push_u32(dt, OF_DT_END); + dt->header.totalsize = (unsigned long)dt_data - (unsigned long)dt; + klimit = ALIGN((unsigned long)dt_data, 8); +} + +void * __init build_flat_dt(unsigned long phys_mem_size) +{ + struct iseries_flat_dt *iseries_dt; + u64 tmp[2]; + + iseries_dt = dt_init(); + + dt_start_node(iseries_dt, ""); + + dt_prop_u32(iseries_dt, "#address-cells", 2); + dt_prop_u32(iseries_dt, "#size-cells", 2); + dt_model(iseries_dt); + + /* /memory */ + dt_start_node(iseries_dt, "memory@0"); + dt_prop_str(iseries_dt, "device_type", device_type_memory); + tmp[0] = 0; + tmp[1] = phys_mem_size; + dt_prop_u64_list(iseries_dt, "reg", tmp, 2); + dt_end_node(iseries_dt); + + /* /chosen */ + dt_start_node(iseries_dt, "chosen"); + dt_prop_str(iseries_dt, "bootargs", cmd_line); + dt_end_node(iseries_dt); + + dt_cpus(iseries_dt); + + dt_vdevices(iseries_dt); + dt_pci_devices(iseries_dt); + + dt_end_node(iseries_dt); + + dt_finish(iseries_dt); + + return iseries_dt; +} |