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-rw-r--r--arch/powerpc/platforms/iseries/setup.c718
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diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
deleted file mode 100644
index a5fbf4cb6329..000000000000
--- a/arch/powerpc/platforms/iseries/setup.c
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@@ -1,718 +0,0 @@
-/*
- * Copyright (c) 2000 Mike Corrigan <mikejc@us.ibm.com>
- * Copyright (c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
- *
- * Description:
- * Architecture- / platform-specific boot-time initialization code for
- * the IBM iSeries LPAR. Adapted from original code by Grant Erickson and
- * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
- * <dan@net4x.com>.
- *
- * 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/init.h>
-#include <linux/threads.h>
-#include <linux/smp.h>
-#include <linux/param.h>
-#include <linux/string.h>
-#include <linux/export.h>
-#include <linux/seq_file.h>
-#include <linux/kdev_t.h>
-#include <linux/kexec.h>
-#include <linux/major.h>
-#include <linux/root_dev.h>
-#include <linux/kernel.h>
-#include <linux/hrtimer.h>
-#include <linux/tick.h>
-
-#include <asm/processor.h>
-#include <asm/machdep.h>
-#include <asm/page.h>
-#include <asm/mmu.h>
-#include <asm/pgtable.h>
-#include <asm/mmu_context.h>
-#include <asm/cputable.h>
-#include <asm/sections.h>
-#include <asm/iommu.h>
-#include <asm/firmware.h>
-#include <asm/system.h>
-#include <asm/time.h>
-#include <asm/paca.h>
-#include <asm/cache.h>
-#include <asm/abs_addr.h>
-#include <asm/iseries/hv_lp_config.h>
-#include <asm/iseries/hv_call_event.h>
-#include <asm/iseries/hv_call_xm.h>
-#include <asm/iseries/it_lp_queue.h>
-#include <asm/iseries/mf.h>
-#include <asm/iseries/hv_lp_event.h>
-#include <asm/iseries/lpar_map.h>
-#include <asm/udbg.h>
-#include <asm/irq.h>
-
-#include "naca.h"
-#include "setup.h"
-#include "irq.h"
-#include "vpd_areas.h"
-#include "processor_vpd.h"
-#include "it_lp_naca.h"
-#include "main_store.h"
-#include "call_sm.h"
-#include "call_hpt.h"
-#include "pci.h"
-
-#ifdef DEBUG
-#define DBG(fmt...) udbg_printf(fmt)
-#else
-#define DBG(fmt...)
-#endif
-
-/* Function Prototypes */
-static unsigned long build_iSeries_Memory_Map(void);
-static void iseries_shared_idle(void);
-static void iseries_dedicated_idle(void);
-
-
-struct MemoryBlock {
- unsigned long absStart;
- unsigned long absEnd;
- unsigned long logicalStart;
- unsigned long logicalEnd;
-};
-
-/*
- * Process the main store vpd to determine where the holes in memory are
- * and return the number of physical blocks and fill in the array of
- * block data.
- */
-static unsigned long iSeries_process_Condor_mainstore_vpd(
- struct MemoryBlock *mb_array, unsigned long max_entries)
-{
- unsigned long holeFirstChunk, holeSizeChunks;
- unsigned long numMemoryBlocks = 1;
- struct IoHriMainStoreSegment4 *msVpd =
- (struct IoHriMainStoreSegment4 *)xMsVpd;
- unsigned long holeStart = msVpd->nonInterleavedBlocksStartAdr;
- unsigned long holeEnd = msVpd->nonInterleavedBlocksEndAdr;
- unsigned long holeSize = holeEnd - holeStart;
-
- printk("Mainstore_VPD: Condor\n");
- /*
- * Determine if absolute memory has any
- * holes so that we can interpret the
- * access map we get back from the hypervisor
- * correctly.
- */
- mb_array[0].logicalStart = 0;
- mb_array[0].logicalEnd = 0x100000000UL;
- mb_array[0].absStart = 0;
- mb_array[0].absEnd = 0x100000000UL;
-
- if (holeSize) {
- numMemoryBlocks = 2;
- holeStart = holeStart & 0x000fffffffffffffUL;
- holeStart = addr_to_chunk(holeStart);
- holeFirstChunk = holeStart;
- holeSize = addr_to_chunk(holeSize);
- holeSizeChunks = holeSize;
- printk( "Main store hole: start chunk = %0lx, size = %0lx chunks\n",
- holeFirstChunk, holeSizeChunks );
- mb_array[0].logicalEnd = holeFirstChunk;
- mb_array[0].absEnd = holeFirstChunk;
- mb_array[1].logicalStart = holeFirstChunk;
- mb_array[1].logicalEnd = 0x100000000UL - holeSizeChunks;
- mb_array[1].absStart = holeFirstChunk + holeSizeChunks;
- mb_array[1].absEnd = 0x100000000UL;
- }
- return numMemoryBlocks;
-}
-
-#define MaxSegmentAreas 32
-#define MaxSegmentAdrRangeBlocks 128
-#define MaxAreaRangeBlocks 4
-
-static unsigned long iSeries_process_Regatta_mainstore_vpd(
- struct MemoryBlock *mb_array, unsigned long max_entries)
-{
- struct IoHriMainStoreSegment5 *msVpdP =
- (struct IoHriMainStoreSegment5 *)xMsVpd;
- unsigned long numSegmentBlocks = 0;
- u32 existsBits = msVpdP->msAreaExists;
- unsigned long area_num;
-
- printk("Mainstore_VPD: Regatta\n");
-
- for (area_num = 0; area_num < MaxSegmentAreas; ++area_num ) {
- unsigned long numAreaBlocks;
- struct IoHriMainStoreArea4 *currentArea;
-
- if (existsBits & 0x80000000) {
- unsigned long block_num;
-
- currentArea = &msVpdP->msAreaArray[area_num];
- numAreaBlocks = currentArea->numAdrRangeBlocks;
- printk("ms_vpd: processing area %2ld blocks=%ld",
- area_num, numAreaBlocks);
- for (block_num = 0; block_num < numAreaBlocks;
- ++block_num ) {
- /* Process an address range block */
- struct MemoryBlock tempBlock;
- unsigned long i;
-
- tempBlock.absStart =
- (unsigned long)currentArea->xAdrRangeBlock[block_num].blockStart;
- tempBlock.absEnd =
- (unsigned long)currentArea->xAdrRangeBlock[block_num].blockEnd;
- tempBlock.logicalStart = 0;
- tempBlock.logicalEnd = 0;
- printk("\n block %ld absStart=%016lx absEnd=%016lx",
- block_num, tempBlock.absStart,
- tempBlock.absEnd);
-
- for (i = 0; i < numSegmentBlocks; ++i) {
- if (mb_array[i].absStart ==
- tempBlock.absStart)
- break;
- }
- if (i == numSegmentBlocks) {
- if (numSegmentBlocks == max_entries)
- panic("iSeries_process_mainstore_vpd: too many memory blocks");
- mb_array[numSegmentBlocks] = tempBlock;
- ++numSegmentBlocks;
- } else
- printk(" (duplicate)");
- }
- printk("\n");
- }
- existsBits <<= 1;
- }
- /* Now sort the blocks found into ascending sequence */
- if (numSegmentBlocks > 1) {
- unsigned long m, n;
-
- for (m = 0; m < numSegmentBlocks - 1; ++m) {
- for (n = numSegmentBlocks - 1; m < n; --n) {
- if (mb_array[n].absStart <
- mb_array[n-1].absStart) {
- struct MemoryBlock tempBlock;
-
- tempBlock = mb_array[n];
- mb_array[n] = mb_array[n-1];
- mb_array[n-1] = tempBlock;
- }
- }
- }
- }
- /*
- * Assign "logical" addresses to each block. These
- * addresses correspond to the hypervisor "bitmap" space.
- * Convert all addresses into units of 256K chunks.
- */
- {
- unsigned long i, nextBitmapAddress;
-
- printk("ms_vpd: %ld sorted memory blocks\n", numSegmentBlocks);
- nextBitmapAddress = 0;
- for (i = 0; i < numSegmentBlocks; ++i) {
- unsigned long length = mb_array[i].absEnd -
- mb_array[i].absStart;
-
- mb_array[i].logicalStart = nextBitmapAddress;
- mb_array[i].logicalEnd = nextBitmapAddress + length;
- nextBitmapAddress += length;
- printk(" Bitmap range: %016lx - %016lx\n"
- " Absolute range: %016lx - %016lx\n",
- mb_array[i].logicalStart,
- mb_array[i].logicalEnd,
- mb_array[i].absStart, mb_array[i].absEnd);
- mb_array[i].absStart = addr_to_chunk(mb_array[i].absStart &
- 0x000fffffffffffffUL);
- mb_array[i].absEnd = addr_to_chunk(mb_array[i].absEnd &
- 0x000fffffffffffffUL);
- mb_array[i].logicalStart =
- addr_to_chunk(mb_array[i].logicalStart);
- mb_array[i].logicalEnd = addr_to_chunk(mb_array[i].logicalEnd);
- }
- }
-
- return numSegmentBlocks;
-}
-
-static unsigned long iSeries_process_mainstore_vpd(struct MemoryBlock *mb_array,
- unsigned long max_entries)
-{
- unsigned long i;
- unsigned long mem_blocks = 0;
-
- if (mmu_has_feature(MMU_FTR_SLB))
- mem_blocks = iSeries_process_Regatta_mainstore_vpd(mb_array,
- max_entries);
- else
- mem_blocks = iSeries_process_Condor_mainstore_vpd(mb_array,
- max_entries);
-
- printk("Mainstore_VPD: numMemoryBlocks = %ld\n", mem_blocks);
- for (i = 0; i < mem_blocks; ++i) {
- printk("Mainstore_VPD: block %3ld logical chunks %016lx - %016lx\n"
- " abs chunks %016lx - %016lx\n",
- i, mb_array[i].logicalStart, mb_array[i].logicalEnd,
- mb_array[i].absStart, mb_array[i].absEnd);
- }
- return mem_blocks;
-}
-
-static void __init iSeries_get_cmdline(void)
-{
- char *p, *q;
-
- /* copy the command line parameter from the primary VSP */
- HvCallEvent_dmaToSp(cmd_line, 2 * 64* 1024, 256,
- HvLpDma_Direction_RemoteToLocal);
-
- p = cmd_line;
- q = cmd_line + 255;
- while(p < q) {
- if (!*p || *p == '\n')
- break;
- ++p;
- }
- *p = 0;
-}
-
-static void __init iSeries_init_early(void)
-{
- DBG(" -> iSeries_init_early()\n");
-
- /* Snapshot the timebase, for use in later recalibration */
- iSeries_time_init_early();
-
- /*
- * Initialize the DMA/TCE management
- */
- iommu_init_early_iSeries();
-
- /* Initialize machine-dependency vectors */
-#ifdef CONFIG_SMP
- smp_init_iSeries();
-#endif
-
- /* Associate Lp Event Queue 0 with processor 0 */
- HvCallEvent_setLpEventQueueInterruptProc(0, 0);
-
- mf_init();
-
- DBG(" <- iSeries_init_early()\n");
-}
-
-struct mschunks_map mschunks_map = {
- /* XXX We don't use these, but Piranha might need them. */
- .chunk_size = MSCHUNKS_CHUNK_SIZE,
- .chunk_shift = MSCHUNKS_CHUNK_SHIFT,
- .chunk_mask = MSCHUNKS_OFFSET_MASK,
-};
-EXPORT_SYMBOL(mschunks_map);
-
-static void mschunks_alloc(unsigned long num_chunks)
-{
- klimit = _ALIGN(klimit, sizeof(u32));
- mschunks_map.mapping = (u32 *)klimit;
- klimit += num_chunks * sizeof(u32);
- mschunks_map.num_chunks = num_chunks;
-}
-
-/*
- * The iSeries may have very large memories ( > 128 GB ) and a partition
- * may get memory in "chunks" that may be anywhere in the 2**52 real
- * address space. The chunks are 256K in size. To map this to the
- * memory model Linux expects, the AS/400 specific code builds a
- * translation table to translate what Linux thinks are "physical"
- * addresses to the actual real addresses. This allows us to make
- * it appear to Linux that we have contiguous memory starting at
- * physical address zero while in fact this could be far from the truth.
- * To avoid confusion, I'll let the words physical and/or real address
- * apply to the Linux addresses while I'll use "absolute address" to
- * refer to the actual hardware real address.
- *
- * build_iSeries_Memory_Map gets information from the Hypervisor and
- * looks at the Main Store VPD to determine the absolute addresses
- * of the memory that has been assigned to our partition and builds
- * a table used to translate Linux's physical addresses to these
- * absolute addresses. Absolute addresses are needed when
- * communicating with the hypervisor (e.g. to build HPT entries)
- *
- * Returns the physical memory size
- */
-
-static unsigned long __init build_iSeries_Memory_Map(void)
-{
- u32 loadAreaFirstChunk, loadAreaLastChunk, loadAreaSize;
- u32 nextPhysChunk;
- u32 hptFirstChunk, hptLastChunk, hptSizeChunks, hptSizePages;
- u32 totalChunks,moreChunks;
- u32 currChunk, thisChunk, absChunk;
- u32 currDword;
- u32 chunkBit;
- u64 map;
- struct MemoryBlock mb[32];
- unsigned long numMemoryBlocks, curBlock;
-
- /* Chunk size on iSeries is 256K bytes */
- totalChunks = (u32)HvLpConfig_getMsChunks();
- mschunks_alloc(totalChunks);
-
- /*
- * Get absolute address of our load area
- * and map it to physical address 0
- * This guarantees that the loadarea ends up at physical 0
- * otherwise, it might not be returned by PLIC as the first
- * chunks
- */
-
- loadAreaFirstChunk = (u32)addr_to_chunk(itLpNaca.xLoadAreaAddr);
- loadAreaSize = itLpNaca.xLoadAreaChunks;
-
- /*
- * Only add the pages already mapped here.
- * Otherwise we might add the hpt pages
- * The rest of the pages of the load area
- * aren't in the HPT yet and can still
- * be assigned an arbitrary physical address
- */
- if ((loadAreaSize * 64) > HvPagesToMap)
- loadAreaSize = HvPagesToMap / 64;
-
- loadAreaLastChunk = loadAreaFirstChunk + loadAreaSize - 1;
-
- /*
- * TODO Do we need to do something if the HPT is in the 64MB load area?
- * This would be required if the itLpNaca.xLoadAreaChunks includes
- * the HPT size
- */
-
- printk("Mapping load area - physical addr = 0000000000000000\n"
- " absolute addr = %016lx\n",
- chunk_to_addr(loadAreaFirstChunk));
- printk("Load area size %dK\n", loadAreaSize * 256);
-
- for (nextPhysChunk = 0; nextPhysChunk < loadAreaSize; ++nextPhysChunk)
- mschunks_map.mapping[nextPhysChunk] =
- loadAreaFirstChunk + nextPhysChunk;
-
- /*
- * Get absolute address of our HPT and remember it so
- * we won't map it to any physical address
- */
- hptFirstChunk = (u32)addr_to_chunk(HvCallHpt_getHptAddress());
- hptSizePages = (u32)HvCallHpt_getHptPages();
- hptSizeChunks = hptSizePages >>
- (MSCHUNKS_CHUNK_SHIFT - HW_PAGE_SHIFT);
- hptLastChunk = hptFirstChunk + hptSizeChunks - 1;
-
- printk("HPT absolute addr = %016lx, size = %dK\n",
- chunk_to_addr(hptFirstChunk), hptSizeChunks * 256);
-
- /*
- * Determine if absolute memory has any
- * holes so that we can interpret the
- * access map we get back from the hypervisor
- * correctly.
- */
- numMemoryBlocks = iSeries_process_mainstore_vpd(mb, 32);
-
- /*
- * Process the main store access map from the hypervisor
- * to build up our physical -> absolute translation table
- */
- curBlock = 0;
- currChunk = 0;
- currDword = 0;
- moreChunks = totalChunks;
-
- while (moreChunks) {
- map = HvCallSm_get64BitsOfAccessMap(itLpNaca.xLpIndex,
- currDword);
- thisChunk = currChunk;
- while (map) {
- chunkBit = map >> 63;
- map <<= 1;
- if (chunkBit) {
- --moreChunks;
- while (thisChunk >= mb[curBlock].logicalEnd) {
- ++curBlock;
- if (curBlock >= numMemoryBlocks)
- panic("out of memory blocks");
- }
- if (thisChunk < mb[curBlock].logicalStart)
- panic("memory block error");
-
- absChunk = mb[curBlock].absStart +
- (thisChunk - mb[curBlock].logicalStart);
- if (((absChunk < hptFirstChunk) ||
- (absChunk > hptLastChunk)) &&
- ((absChunk < loadAreaFirstChunk) ||
- (absChunk > loadAreaLastChunk))) {
- mschunks_map.mapping[nextPhysChunk] =
- absChunk;
- ++nextPhysChunk;
- }
- }
- ++thisChunk;
- }
- ++currDword;
- currChunk += 64;
- }
-
- /*
- * main store size (in chunks) is
- * totalChunks - hptSizeChunks
- * which should be equal to
- * nextPhysChunk
- */
- return chunk_to_addr(nextPhysChunk);
-}
-
-/*
- * Document me.
- */
-static void __init iSeries_setup_arch(void)
-{
- if (get_lppaca()->shared_proc) {
- ppc_md.idle_loop = iseries_shared_idle;
- printk(KERN_DEBUG "Using shared processor idle loop\n");
- } else {
- ppc_md.idle_loop = iseries_dedicated_idle;
- printk(KERN_DEBUG "Using dedicated idle loop\n");
- }
-
- /* Setup the Lp Event Queue */
- setup_hvlpevent_queue();
-
- printk("Max logical processors = %d\n",
- itVpdAreas.xSlicMaxLogicalProcs);
- printk("Max physical processors = %d\n",
- itVpdAreas.xSlicMaxPhysicalProcs);
-
- iSeries_pcibios_init();
-}
-
-static void iSeries_show_cpuinfo(struct seq_file *m)
-{
- seq_printf(m, "machine\t\t: 64-bit iSeries Logical Partition\n");
-}
-
-static void __init iSeries_progress(char * st, unsigned short code)
-{
- printk("Progress: [%04x] - %s\n", (unsigned)code, st);
- mf_display_progress(code);
-}
-
-static void __init iSeries_fixup_klimit(void)
-{
- /*
- * Change klimit to take into account any ram disk
- * that may be included
- */
- if (naca.xRamDisk)
- klimit = KERNELBASE + (u64)naca.xRamDisk +
- (naca.xRamDiskSize * HW_PAGE_SIZE);
-}
-
-static int __init iSeries_src_init(void)
-{
- /* clear the progress line */
- if (firmware_has_feature(FW_FEATURE_ISERIES))
- ppc_md.progress(" ", 0xffff);
- return 0;
-}
-
-late_initcall(iSeries_src_init);
-
-static inline void process_iSeries_events(void)
-{
- asm volatile ("li 0,0x5555; sc" : : : "r0", "r3");
-}
-
-static void yield_shared_processor(void)
-{
- unsigned long tb;
-
- HvCall_setEnabledInterrupts(HvCall_MaskIPI |
- HvCall_MaskLpEvent |
- HvCall_MaskLpProd |
- HvCall_MaskTimeout);
-
- tb = get_tb();
- /* Compute future tb value when yield should expire */
- HvCall_yieldProcessor(HvCall_YieldTimed, tb+tb_ticks_per_jiffy);
-
- /*
- * The decrementer stops during the yield. Force a fake decrementer
- * here and let the timer_interrupt code sort out the actual time.
- */
- get_lppaca()->int_dword.fields.decr_int = 1;
- ppc64_runlatch_on();
- process_iSeries_events();
-}
-
-static void iseries_shared_idle(void)
-{
- while (1) {
- tick_nohz_idle_enter();
- rcu_idle_enter();
- while (!need_resched() && !hvlpevent_is_pending()) {
- local_irq_disable();
- ppc64_runlatch_off();
-
- /* Recheck with irqs off */
- if (!need_resched() && !hvlpevent_is_pending())
- yield_shared_processor();
-
- HMT_medium();
- local_irq_enable();
- }
-
- ppc64_runlatch_on();
- rcu_idle_exit();
- tick_nohz_idle_exit();
-
- if (hvlpevent_is_pending())
- process_iSeries_events();
-
- schedule_preempt_disabled();
- }
-}
-
-static void iseries_dedicated_idle(void)
-{
- set_thread_flag(TIF_POLLING_NRFLAG);
-
- while (1) {
- tick_nohz_idle_enter();
- rcu_idle_enter();
- if (!need_resched()) {
- while (!need_resched()) {
- ppc64_runlatch_off();
- HMT_low();
-
- if (hvlpevent_is_pending()) {
- HMT_medium();
- ppc64_runlatch_on();
- process_iSeries_events();
- }
- }
-
- HMT_medium();
- }
-
- ppc64_runlatch_on();
- rcu_idle_exit();
- tick_nohz_idle_exit();
- schedule_preempt_disabled();
- }
-}
-
-static void __iomem *iseries_ioremap(phys_addr_t address, unsigned long size,
- unsigned long flags, void *caller)
-{
- return (void __iomem *)address;
-}
-
-static void iseries_iounmap(volatile void __iomem *token)
-{
-}
-
-static int __init iseries_probe(void)
-{
- unsigned long root = of_get_flat_dt_root();
- if (!of_flat_dt_is_compatible(root, "IBM,iSeries"))
- return 0;
-
- hpte_init_iSeries();
- /* iSeries does not support 16M pages */
- cur_cpu_spec->mmu_features &= ~MMU_FTR_16M_PAGE;
-
- return 1;
-}
-
-#ifdef CONFIG_KEXEC
-static int iseries_kexec_prepare(struct kimage *image)
-{
- return -ENOSYS;
-}
-#endif
-
-define_machine(iseries) {
- .name = "iSeries",
- .setup_arch = iSeries_setup_arch,
- .show_cpuinfo = iSeries_show_cpuinfo,
- .init_IRQ = iSeries_init_IRQ,
- .get_irq = iSeries_get_irq,
- .init_early = iSeries_init_early,
- .pcibios_fixup = iSeries_pci_final_fixup,
- .pcibios_fixup_resources= iSeries_pcibios_fixup_resources,
- .restart = mf_reboot,
- .power_off = mf_power_off,
- .halt = mf_power_off,
- .get_boot_time = iSeries_get_boot_time,
- .set_rtc_time = iSeries_set_rtc_time,
- .get_rtc_time = iSeries_get_rtc_time,
- .calibrate_decr = generic_calibrate_decr,
- .progress = iSeries_progress,
- .probe = iseries_probe,
- .ioremap = iseries_ioremap,
- .iounmap = iseries_iounmap,
-#ifdef CONFIG_KEXEC
- .machine_kexec_prepare = iseries_kexec_prepare,
-#endif
- /* XXX Implement enable_pmcs for iSeries */
-};
-
-void * __init iSeries_early_setup(void)
-{
- unsigned long phys_mem_size;
-
- /* Identify CPU type. This is done again by the common code later
- * on but calling this function multiple times is fine.
- */
- identify_cpu(0, mfspr(SPRN_PVR));
- initialise_paca(&boot_paca, 0);
-
- powerpc_firmware_features |= FW_FEATURE_ISERIES;
- powerpc_firmware_features |= FW_FEATURE_LPAR;
-
-#ifdef CONFIG_SMP
- /* On iSeries we know we can never have more than 64 cpus */
- nr_cpu_ids = max(nr_cpu_ids, 64);
-#endif
-
- iSeries_fixup_klimit();
-
- /*
- * Initialize the table which translate Linux physical addresses to
- * AS/400 absolute addresses
- */
- phys_mem_size = build_iSeries_Memory_Map();
-
- iSeries_get_cmdline();
-
- return (void *) __pa(build_flat_dt(phys_mem_size));
-}
-
-static void hvputc(char c)
-{
- if (c == '\n')
- hvputc('\r');
-
- HvCall_writeLogBuffer(&c, 1);
-}
-
-void __init udbg_init_iseries(void)
-{
- udbg_putc = hvputc;
-}