summaryrefslogtreecommitdiff
path: root/arch/powerpc/platforms/iseries/dt.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/platforms/iseries/dt.c')
-rw-r--r--arch/powerpc/platforms/iseries/dt.c643
1 files changed, 0 insertions, 643 deletions
diff --git a/arch/powerpc/platforms/iseries/dt.c b/arch/powerpc/platforms/iseries/dt.c
deleted file mode 100644
index f0491cc..0000000
--- a/arch/powerpc/platforms/iseries/dt.c
+++ /dev/null
@@ -1,643 +0,0 @@
-/*
- * Copyright (C) 2005-2006 Michael Ellerman, IBM Corporation
- * Copyright (C) 2000-2004, 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/udbg.h>
-
-#include "processor_vpd.h"
-#include "call_hpt.h"
-#include "call_pci.h"
-#include "pci.h"
-#include "it_exp_vpd_panel.h"
-#include "naca.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 marked with the DS macro.
- */
-extern char __dt_strings_start[];
-extern char __dt_strings_end[];
-
-#define DS(s) ({ \
- static const char __s[] __attribute__((section(".dt_strings"))) = s; \
- __s; \
-})
-
-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 .dt_strings section
- * that we 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_pci[] = "pci";
-static char __initdata device_type_vdevice[] = "vdevice";
-static char __initdata device_type_vscsi[] = "vscsi";
-
-
-/* EBCDIC to ASCII conversion routines */
-
-static unsigned char __init e2a(unsigned char x)
-{
- switch (x) {
- case 0x81 ... 0x89:
- return x - 0x81 + 'a';
- case 0x91 ... 0x99:
- return x - 0x91 + 'j';
- case 0xA2 ... 0xA9:
- return x - 0xA2 + 's';
- case 0xC1 ... 0xC9:
- return x - 0xC1 + 'A';
- case 0xD1 ... 0xD9:
- return x - 0xD1 + 'J';
- case 0xE2 ... 0xE9:
- return x - 0xE2 + 'S';
- case 0xF0 ... 0xF9:
- return x - 0xF0 + '0';
- }
- return ' ';
-}
-
-static unsigned char * __init strne2a(unsigned char *dest,
- const unsigned char *src, size_t n)
-{
- int i;
-
- n = strnlen(src, n);
-
- for (i = 0; i < n; i++)
- dest[i] = e2a(src[i]);
-
- return dest;
-}
-
-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);
-}
-#define dt_prop(dt, name, data, len) __dt_prop((dt), DS(name), (data), (len))
-
-#define dt_prop_str(dt, name, 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));
-}
-#define dt_prop_u32(dt, name, data) __dt_prop_u32((dt), DS(name), (data))
-
-static void __init __maybe_unused __dt_prop_u64(struct iseries_flat_dt *dt,
- const char *name, u64 data)
-{
- __dt_prop(dt, name, &data, sizeof(u64));
-}
-#define dt_prop_u64(dt, name, data) __dt_prop_u64((dt), DS(name), (data))
-
-#define dt_prop_u64_list(dt, name, data, n) \
- dt_prop((dt), name, (data), sizeof(u64) * (n))
-
-#define dt_prop_u32_list(dt, name, data, n) \
- dt_prop((dt), name, (data), sizeof(u32) * (n))
-
-#define dt_prop_empty(dt, name) dt_prop((dt), name, NULL, 0)
-
-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_LPPACAS; 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,";
-
- /* N.B. lparcfg.c knows about the "IBM," prefixes ... */
- /* "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");
- dt_prop_u32(dt, "ibm,partition-no", HvLpConfig_getLpIndex());
-}
-
-static void __init dt_initrd(struct iseries_flat_dt *dt)
-{
-#ifdef CONFIG_BLK_DEV_INITRD
- if (naca.xRamDisk) {
- dt_prop_u64(dt, "linux,initrd-start", (u64)naca.xRamDisk);
- dt_prop_u64(dt, "linux,initrd-end",
- (u64)naca.xRamDisk + naca.xRamDiskSize * HW_PAGE_SIZE);
- }
-#endif
-}
-
-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,
- "IBM,iSeries-vty", 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);
- }
-
- 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_initrd(iseries_dt);
- 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;
-}