2 * Copyright 2001 Mike Corrigan, IBM Corp
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
9 #include <linux/config.h>
10 #include <linux/types.h>
11 #include <linux/threads.h>
12 #include <linux/module.h>
13 #include <linux/bitops.h>
14 #include <asm/processor.h>
15 #include <asm/ptrace.h>
17 #include <asm/abs_addr.h>
18 #include <asm/iSeries/ItLpNaca.h>
19 #include <asm/lppaca.h>
20 #include <asm/iSeries/ItLpRegSave.h>
22 #include <asm/iSeries/HvReleaseData.h>
23 #include <asm/iSeries/LparMap.h>
24 #include <asm/iSeries/ItVpdAreas.h>
25 #include <asm/iSeries/ItIplParmsReal.h>
26 #include <asm/iSeries/ItExtVpdPanel.h>
27 #include <asm/iSeries/ItLpQueue.h>
28 #include <asm/iSeries/IoHriProcessorVpd.h>
29 #include <asm/iSeries/ItSpCommArea.h>
32 /* The HvReleaseData is the root of the information shared between
33 * the hypervisor and Linux.
36 struct HvReleaseData hvReleaseData = {
37 .xDesc = 0xc8a5d9c4, /* "HvRD" ebcdic */
38 .xSize = sizeof(struct HvReleaseData),
39 .xVpdAreasPtrOffset = offsetof(struct naca_struct, xItVpdAreas),
40 .xSlicNacaAddr = &naca, /* 64-bit Naca address */
41 .xMsNucDataOffset = 0x4800, /* offset of LparMap within loadarea (see head.S) */
42 .xTagsMode = 1, /* tags inactive */
43 .xAddressSize = 0, /* 64 bit */
44 .xNoSharedProcs = 0, /* shared processors */
45 .xNoHMT = 0, /* HMT allowed */
46 .xRsvd2 = 6, /* TEMP: This allows non-GA driver */
47 .xVrmIndex = 4, /* We are v5r2m0 */
48 .xMinSupportedPlicVrmIndex = 3, /* v5r1m0 */
49 .xMinCompatablePlicVrmIndex = 3, /* v5r1m0 */
50 .xVrmName = { 0xd3, 0x89, 0x95, 0xa4, /* "Linux 2.4.64" ebcdic */
51 0xa7, 0x40, 0xf2, 0x4b,
52 0xf4, 0x4b, 0xf6, 0xf4 },
55 extern void system_reset_iSeries(void);
56 extern void machine_check_iSeries(void);
57 extern void data_access_iSeries(void);
58 extern void instruction_access_iSeries(void);
59 extern void hardware_interrupt_iSeries(void);
60 extern void alignment_iSeries(void);
61 extern void program_check_iSeries(void);
62 extern void fp_unavailable_iSeries(void);
63 extern void decrementer_iSeries(void);
64 extern void trap_0a_iSeries(void);
65 extern void trap_0b_iSeries(void);
66 extern void system_call_iSeries(void);
67 extern void single_step_iSeries(void);
68 extern void trap_0e_iSeries(void);
69 extern void performance_monitor_iSeries(void);
70 extern void data_access_slb_iSeries(void);
71 extern void instruction_access_slb_iSeries(void);
73 struct ItLpNaca itLpNaca = {
74 .xDesc = 0xd397d581, /* "LpNa" ebcdic */
75 .xSize = 0x0400, /* size of ItLpNaca */
76 .xIntHdlrOffset = 0x0300, /* offset to int array */
77 .xMaxIntHdlrEntries = 19, /* # ents */
78 .xPrimaryLpIndex = 0, /* Part # of primary */
79 .xServiceLpIndex = 0, /* Part # of serv */
80 .xLpIndex = 0, /* Part # of me */
81 .xMaxLpQueues = 0, /* # of LP queues */
82 .xLpQueueOffset = 0x100, /* offset of start of LP queues */
83 .xPirEnvironMode = 0, /* Piranha stuff */
92 .xPlicVrmIndex = 0, /* VRM index of PLIC */
93 .xMinSupportedSlicVrmInd = 0, /* min supported SLIC */
94 .xMinCompatableSlicVrmInd = 0, /* min compat SLIC */
95 .xLoadAreaAddr = 0, /* 64-bit addr of load area */
96 .xLoadAreaChunks = 0, /* chunks for load area */
97 .xPaseSysCallCRMask = 0, /* PASE mask */
98 .xSlicSegmentTablePtr = 0, /* seg table */
99 .xOldLpQueue = { 0 }, /* Old LP Queue */
101 (u64)system_reset_iSeries, /* 0x100 System Reset */
102 (u64)machine_check_iSeries, /* 0x200 Machine Check */
103 (u64)data_access_iSeries, /* 0x300 Data Access */
104 (u64)instruction_access_iSeries, /* 0x400 Instruction Access */
105 (u64)hardware_interrupt_iSeries, /* 0x500 External */
106 (u64)alignment_iSeries, /* 0x600 Alignment */
107 (u64)program_check_iSeries, /* 0x700 Program Check */
108 (u64)fp_unavailable_iSeries, /* 0x800 FP Unavailable */
109 (u64)decrementer_iSeries, /* 0x900 Decrementer */
110 (u64)trap_0a_iSeries, /* 0xa00 Trap 0A */
111 (u64)trap_0b_iSeries, /* 0xb00 Trap 0B */
112 (u64)system_call_iSeries, /* 0xc00 System Call */
113 (u64)single_step_iSeries, /* 0xd00 Single Step */
114 (u64)trap_0e_iSeries, /* 0xe00 Trap 0E */
115 (u64)performance_monitor_iSeries,/* 0xf00 Performance Monitor */
118 0, /* int 0x1020 CPU ctls */
119 (u64)hardware_interrupt_iSeries, /* SC Ret Hdlr */
120 (u64)data_access_slb_iSeries, /* 0x380 D-SLB */
121 (u64)instruction_access_slb_iSeries /* 0x480 I-SLB */
124 EXPORT_SYMBOL(itLpNaca);
126 /* May be filled in by the hypervisor so cannot end up in the BSS */
127 struct ItIplParmsReal xItIplParmsReal __attribute__((__section__(".data")));
129 /* May be filled in by the hypervisor so cannot end up in the BSS */
130 struct ItExtVpdPanel xItExtVpdPanel __attribute__((__section__(".data")));
131 EXPORT_SYMBOL(xItExtVpdPanel);
133 #define maxPhysicalProcessors 32
135 struct IoHriProcessorVpd xIoHriProcessorVpd[maxPhysicalProcessors] = {
137 .xInstCacheOperandSize = 32,
138 .xDataCacheOperandSize = 32,
139 .xProcFreq = 50000000,
140 .xTimeBaseFreq = 50000000,
145 /* Space for Main Store Vpd 27,200 bytes */
146 /* May be filled in by the hypervisor so cannot end up in the BSS */
147 u64 xMsVpd[3400] __attribute__((__section__(".data")));
149 /* Space for Recovery Log Buffer */
150 /* May be filled in by the hypervisor so cannot end up in the BSS */
151 u64 xRecoveryLogBuffer[32] __attribute__((__section__(".data")));
153 struct SpCommArea xSpCommArea = {
158 /* The LparMap data is now located at offset 0x6000 in head.S
159 * It was put there so that the HvReleaseData could address it
160 * with a 32-bit offset as required by the iSeries hypervisor
162 * The Naca has a pointer to the ItVpdAreas. The hypervisor finds
163 * the Naca via the HvReleaseData area. The HvReleaseData has the
164 * offset into the Naca of the pointer to the ItVpdAreas.
166 struct ItVpdAreas itVpdAreas = {
167 .xSlicDesc = 0xc9a3e5c1, /* "ItVA" */
168 .xSlicSize = sizeof(struct ItVpdAreas),
169 .xSlicVpdEntries = ItVpdMaxEntries, /* # VPD array entries */
170 .xSlicDmaEntries = ItDmaMaxEntries, /* # DMA array entries */
171 .xSlicMaxLogicalProcs = NR_CPUS * 2, /* Max logical procs */
172 .xSlicMaxPhysicalProcs = maxPhysicalProcessors, /* Max physical procs */
173 .xSlicDmaToksOffset = offsetof(struct ItVpdAreas, xPlicDmaToks),
174 .xSlicVpdAdrsOffset = offsetof(struct ItVpdAreas, xSlicVpdAdrs),
175 .xSlicDmaLensOffset = offsetof(struct ItVpdAreas, xPlicDmaLens),
176 .xSlicVpdLensOffset = offsetof(struct ItVpdAreas, xSlicVpdLens),
177 .xSlicMaxSlotLabels = 0, /* max slot labels */
178 .xSlicMaxLpQueues = 1, /* max LP queues */
179 .xPlicDmaLens = { 0 }, /* DMA lengths */
180 .xPlicDmaToks = { 0 }, /* DMA tokens */
181 .xSlicVpdLens = { /* VPD lengths */
183 sizeof(xItExtVpdPanel), /* 3 Extended VPD */
184 sizeof(struct paca_struct), /* 4 length of Paca */
186 sizeof(struct ItIplParmsReal),/* 6 length of IPL parms */
187 26992, /* 7 length of MS VPD */
189 sizeof(struct ItLpNaca),/* 9 length of LP Naca */
191 256, /* 11 length of Recovery Log Buf */
192 sizeof(struct SpCommArea), /* 12 length of SP Comm Area */
194 sizeof(struct IoHriProcessorVpd),/* 16 length of Proc Vpd */
195 0,0,0,0,0,0, /* 17 - 22 */
196 sizeof(struct hvlpevent_queue), /* 23 length of Lp Queue */
199 .xSlicVpdAdrs = { /* VPD addresses */
201 &xItExtVpdPanel, /* 3 Extended VPD */
202 &paca[0], /* 4 first Paca */
204 &xItIplParmsReal, /* 6 IPL parms */
205 &xMsVpd, /* 7 MS Vpd */
207 &itLpNaca, /* 9 LpNaca */
209 &xRecoveryLogBuffer, /* 11 Recovery Log Buffer */
210 &xSpCommArea, /* 12 SP Comm Area */
212 &xIoHriProcessorVpd, /* 16 Proc Vpd */
213 0,0,0,0,0,0, /* 17 - 22 */
214 &hvlpevent_queue, /* 23 Lp Queue */
219 struct msChunks msChunks;
220 EXPORT_SYMBOL(msChunks);
222 /* Depending on whether this is called from iSeries or pSeries setup
223 * code, the location of the msChunks struct may or may not have
224 * to be reloc'd, so we force the caller to do that for us by passing
225 * in a pointer to the structure.
228 msChunks_alloc(unsigned long mem, unsigned long num_chunks, unsigned long chunk_size)
230 unsigned long offset = reloc_offset();
231 struct msChunks *_msChunks = PTRRELOC(&msChunks);
233 _msChunks->num_chunks = num_chunks;
234 _msChunks->chunk_size = chunk_size;
235 _msChunks->chunk_shift = __ilog2(chunk_size);
236 _msChunks->chunk_mask = (1UL<<_msChunks->chunk_shift)-1;
238 mem = _ALIGN(mem, sizeof(msChunks_entry));
239 _msChunks->abs = (msChunks_entry *)(mem + offset);
240 mem += num_chunks * sizeof(msChunks_entry);