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authorMark Nutter <mnutter@us.ibm.com>2005-11-15 15:53:49 -0500
committerPaul Mackerras <paulus@samba.org>2006-01-08 22:49:16 -0500
commit5473af049d8b3556874174e61ce1986c9b5e8fa6 (patch)
tree53da74c13eb9125b85e85f9fc44981d3d1b41b49 /arch
parent67207b9664a8d603138ef1556141e6d0a102bea7 (diff)
[PATCH] spufs: switchable spu contexts
Add some infrastructure for saving and restoring the context of an SPE. This patch creates a new structure that can hold the whole state of a physical SPE in memory. It also contains code that avoids races during the context switch and the binary code that is loaded to the SPU in order to access its registers. The actual PPE- and SPE-side context switch code are two separate patches. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/powerpc/platforms/cell/spu_base.c27
-rw-r--r--arch/powerpc/platforms/cell/spufs/Makefile4
-rw-r--r--arch/powerpc/platforms/cell/spufs/context.c18
-rw-r--r--arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped231
-rw-r--r--arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped191
-rw-r--r--arch/powerpc/platforms/cell/spufs/spufs.h2
-rw-r--r--arch/powerpc/platforms/cell/spufs/switch.c174
7 files changed, 643 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index 9e9096590a07..44492d87cdf7 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -62,7 +62,9 @@ static int __spu_trap_error(struct spu *spu)
62static void spu_restart_dma(struct spu *spu) 62static void spu_restart_dma(struct spu *spu)
63{ 63{
64 struct spu_priv2 __iomem *priv2 = spu->priv2; 64 struct spu_priv2 __iomem *priv2 = spu->priv2;
65 out_be64(&priv2->mfc_control_RW, MFC_CNTL_RESTART_DMA_COMMAND); 65
66 if (!test_bit(SPU_CONTEXT_SWITCH_PENDING_nr, &spu->flags))
67 out_be64(&priv2->mfc_control_RW, MFC_CNTL_RESTART_DMA_COMMAND);
66} 68}
67 69
68static int __spu_trap_data_seg(struct spu *spu, unsigned long ea) 70static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
@@ -72,6 +74,11 @@ static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
72 74
73 pr_debug("%s\n", __FUNCTION__); 75 pr_debug("%s\n", __FUNCTION__);
74 76
77 if (test_bit(SPU_CONTEXT_SWITCH_ACTIVE_nr, &spu->flags)) {
78 printk("%s: invalid access during switch!\n", __func__);
79 return 1;
80 }
81
75 if (REGION_ID(ea) != USER_REGION_ID) { 82 if (REGION_ID(ea) != USER_REGION_ID) {
76 pr_debug("invalid region access at %016lx\n", ea); 83 pr_debug("invalid region access at %016lx\n", ea);
77 return 1; 84 return 1;
@@ -98,6 +105,7 @@ static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
98 return 0; 105 return 0;
99} 106}
100 107
108extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap); //XXX
101static int __spu_trap_data_map(struct spu *spu, unsigned long ea) 109static int __spu_trap_data_map(struct spu *spu, unsigned long ea)
102{ 110{
103 unsigned long dsisr; 111 unsigned long dsisr;
@@ -107,8 +115,21 @@ static int __spu_trap_data_map(struct spu *spu, unsigned long ea)
107 priv1 = spu->priv1; 115 priv1 = spu->priv1;
108 dsisr = in_be64(&priv1->mfc_dsisr_RW); 116 dsisr = in_be64(&priv1->mfc_dsisr_RW);
109 117
110 wake_up(&spu->stop_wq); 118 /* Handle kernel space hash faults immediately.
119 User hash faults need to be deferred to process context. */
120 if ((dsisr & MFC_DSISR_PTE_NOT_FOUND)
121 && REGION_ID(ea) != USER_REGION_ID
122 && hash_page(ea, _PAGE_PRESENT, 0x300) == 0) {
123 spu_restart_dma(spu);
124 return 0;
125 }
126
127 if (test_bit(SPU_CONTEXT_SWITCH_ACTIVE_nr, &spu->flags)) {
128 printk("%s: invalid access during switch!\n", __func__);
129 return 1;
130 }
111 131
132 wake_up(&spu->stop_wq);
112 return 0; 133 return 0;
113} 134}
114 135
@@ -382,7 +403,6 @@ void spu_free(struct spu *spu)
382} 403}
383EXPORT_SYMBOL(spu_free); 404EXPORT_SYMBOL(spu_free);
384 405
385extern int hash_page(unsigned long ea, unsigned long access, unsigned long trap); //XXX
386static int spu_handle_mm_fault(struct spu *spu) 406static int spu_handle_mm_fault(struct spu *spu)
387{ 407{
388 struct spu_priv1 __iomem *priv1; 408 struct spu_priv1 __iomem *priv1;
@@ -650,6 +670,7 @@ static int __init create_spu(struct device_node *spe)
650 spu->slb_replace = 0; 670 spu->slb_replace = 0;
651 spu->mm = NULL; 671 spu->mm = NULL;
652 spu->class_0_pending = 0; 672 spu->class_0_pending = 0;
673 spu->flags = 0UL;
653 spin_lock_init(&spu->register_lock); 674 spin_lock_init(&spu->register_lock);
654 675
655 out_be64(&spu->priv1->mfc_sdr_RW, mfspr(SPRN_SDR1)); 676 out_be64(&spu->priv1->mfc_sdr_RW, mfspr(SPRN_SDR1));
diff --git a/arch/powerpc/platforms/cell/spufs/Makefile b/arch/powerpc/platforms/cell/spufs/Makefile
index 6f496e37bcb7..e70e3cc1158f 100644
--- a/arch/powerpc/platforms/cell/spufs/Makefile
+++ b/arch/powerpc/platforms/cell/spufs/Makefile
@@ -1,3 +1,5 @@
1obj-$(CONFIG_SPU_FS) += spufs.o 1obj-$(CONFIG_SPU_FS) += spufs.o
2 2
3spufs-y += inode.o file.o context.o syscalls.o 3spufs-y += inode.o file.o context.o switch.o syscalls.o
4
5$(obj)/switch.o: $(obj)/spu_save_dump.h $(obj)/spu_restore_dump.h
diff --git a/arch/powerpc/platforms/cell/spufs/context.c b/arch/powerpc/platforms/cell/spufs/context.c
index a69b85e2778a..41eea4576b6d 100644
--- a/arch/powerpc/platforms/cell/spufs/context.c
+++ b/arch/powerpc/platforms/cell/spufs/context.c
@@ -22,6 +22,7 @@
22 22
23#include <linux/slab.h> 23#include <linux/slab.h>
24#include <asm/spu.h> 24#include <asm/spu.h>
25#include <asm/spu_csa.h>
25#include "spufs.h" 26#include "spufs.h"
26 27
27struct spu_context *alloc_spu_context(void) 28struct spu_context *alloc_spu_context(void)
@@ -30,9 +31,25 @@ struct spu_context *alloc_spu_context(void)
30 ctx = kmalloc(sizeof *ctx, GFP_KERNEL); 31 ctx = kmalloc(sizeof *ctx, GFP_KERNEL);
31 if (!ctx) 32 if (!ctx)
32 goto out; 33 goto out;
34 /* Future enhancement: do not call spu_alloc()
35 * here. This step should be deferred until
36 * spu_run()!!
37 *
38 * More work needs to be done to read(),
39 * write(), mmap(), etc., so that operations
40 * are performed on CSA when the context is
41 * not currently being run. In this way we
42 * can support arbitrarily large number of
43 * entries in /spu, allow state queries, etc.
44 */
33 ctx->spu = spu_alloc(); 45 ctx->spu = spu_alloc();
34 if (!ctx->spu) 46 if (!ctx->spu)
35 goto out_free; 47 goto out_free;
48 spu_init_csa(&ctx->csa);
49 if (!ctx->csa.lscsa) {
50 spu_free(ctx->spu);
51 goto out_free;
52 }
36 init_rwsem(&ctx->backing_sema); 53 init_rwsem(&ctx->backing_sema);
37 spin_lock_init(&ctx->mmio_lock); 54 spin_lock_init(&ctx->mmio_lock);
38 kref_init(&ctx->kref); 55 kref_init(&ctx->kref);
@@ -50,6 +67,7 @@ void destroy_spu_context(struct kref *kref)
50 ctx = container_of(kref, struct spu_context, kref); 67 ctx = container_of(kref, struct spu_context, kref);
51 if (ctx->spu) 68 if (ctx->spu)
52 spu_free(ctx->spu); 69 spu_free(ctx->spu);
70 spu_fini_csa(&ctx->csa);
53 kfree(ctx); 71 kfree(ctx);
54} 72}
55 73
diff --git a/arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped b/arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped
new file mode 100644
index 000000000000..1b2355ff7036
--- /dev/null
+++ b/arch/powerpc/platforms/cell/spufs/spu_restore_dump.h_shipped
@@ -0,0 +1,231 @@
1/*
2 * spu_restore_dump.h: Copyright (C) 2005 IBM.
3 * Hex-dump auto generated from spu_restore.c.
4 * Do not edit!
5 */
6static unsigned int spu_restore_code[] __page_aligned = {
70x40800000, 0x409ff801, 0x24000080, 0x24fd8081,
80x1cd80081, 0x33001180, 0x42030003, 0x33800284,
90x1c010204, 0x40200000, 0x40200000, 0x40200000,
100x34000190, 0x34004191, 0x34008192, 0x3400c193,
110x141fc205, 0x23fffd84, 0x1c100183, 0x217ffa85,
120x3080a000, 0x3080a201, 0x3080a402, 0x3080a603,
130x3080a804, 0x3080aa05, 0x3080ac06, 0x3080ae07,
140x3080b008, 0x3080b209, 0x3080b40a, 0x3080b60b,
150x3080b80c, 0x3080ba0d, 0x3080bc0e, 0x3080be0f,
160x00003ffc, 0x00000000, 0x00000000, 0x00000000,
170x01a00182, 0x3ec00083, 0xb0a14103, 0x01a00204,
180x3ec10082, 0x4202800e, 0x04000703, 0xb0a14202,
190x21a00803, 0x3fbf028d, 0x3f20068d, 0x3fbe0682,
200x3fe30102, 0x21a00882, 0x3f82028f, 0x3fe3078f,
210x3fbf0784, 0x3f200204, 0x3fbe0204, 0x3fe30204,
220x04000203, 0x21a00903, 0x40848002, 0x21a00982,
230x40800003, 0x21a00a03, 0x40802002, 0x21a00a82,
240x21a00083, 0x40800082, 0x21a00b02, 0x10002818,
250x40a80002, 0x32800007, 0x4207000c, 0x18008208,
260x40a0000b, 0x4080020a, 0x40800709, 0x00200000,
270x42070002, 0x3ac30384, 0x1cffc489, 0x00200000,
280x18008383, 0x38830382, 0x4cffc486, 0x3ac28185,
290xb0408584, 0x28830382, 0x1c020387, 0x38828182,
300xb0408405, 0x1802c408, 0x28828182, 0x217ff886,
310x04000583, 0x21a00803, 0x3fbe0682, 0x3fe30102,
320x04000106, 0x21a00886, 0x04000603, 0x21a00903,
330x40803c02, 0x21a00982, 0x40800003, 0x04000184,
340x21a00a04, 0x40802202, 0x21a00a82, 0x42028005,
350x34208702, 0x21002282, 0x21a00804, 0x21a00886,
360x3fbf0782, 0x3f200102, 0x3fbe0102, 0x3fe30102,
370x21a00902, 0x40804003, 0x21a00983, 0x21a00a04,
380x40805a02, 0x21a00a82, 0x40800083, 0x21a00b83,
390x01a00c02, 0x01a00d83, 0x3420c282, 0x21a00e02,
400x34210283, 0x21a00f03, 0x34200284, 0x77400200,
410x3421c282, 0x21a00702, 0x34218283, 0x21a00083,
420x34214282, 0x21a00b02, 0x4200480c, 0x00200000,
430x1c010286, 0x34220284, 0x34220302, 0x0f608203,
440x5c024204, 0x3b81810b, 0x42013c02, 0x00200000,
450x18008185, 0x38808183, 0x3b814182, 0x21004e84,
460x4020007f, 0x35000100, 0x000004e0, 0x000002a0,
470x000002e8, 0x00000428, 0x00000360, 0x000002e8,
480x000004a0, 0x00000468, 0x000003c8, 0x00000360,
490x409ffe02, 0x30801203, 0x40800204, 0x3ec40085,
500x10009c09, 0x3ac10606, 0xb060c105, 0x4020007f,
510x4020007f, 0x20801203, 0x38810602, 0xb0408586,
520x28810602, 0x32004180, 0x34204702, 0x21a00382,
530x4020007f, 0x327fdc80, 0x409ffe02, 0x30801203,
540x40800204, 0x3ec40087, 0x40800405, 0x00200000,
550x40800606, 0x3ac10608, 0x3ac14609, 0x3ac1860a,
560xb060c107, 0x20801203, 0x41004003, 0x38810602,
570x4020007f, 0xb0408188, 0x4020007f, 0x28810602,
580x41201002, 0x38814603, 0x10009c09, 0xb060c109,
590x4020007f, 0x28814603, 0x41193f83, 0x38818602,
600x60ffc003, 0xb040818a, 0x28818602, 0x32003080,
610x409ffe02, 0x30801203, 0x40800204, 0x3ec40087,
620x41201008, 0x10009c14, 0x40800405, 0x3ac10609,
630x40800606, 0x3ac1460a, 0xb060c107, 0x3ac1860b,
640x20801203, 0x38810602, 0xb0408409, 0x28810602,
650x38814603, 0xb060c40a, 0x4020007f, 0x28814603,
660x41193f83, 0x38818602, 0x60ffc003, 0xb040818b,
670x28818602, 0x32002380, 0x409ffe02, 0x30801204,
680x40800205, 0x3ec40083, 0x40800406, 0x3ac14607,
690x3ac18608, 0xb0810103, 0x41004002, 0x20801204,
700x4020007f, 0x38814603, 0x10009c0b, 0xb060c107,
710x4020007f, 0x4020007f, 0x28814603, 0x38818602,
720x4020007f, 0x4020007f, 0xb0408588, 0x28818602,
730x4020007f, 0x32001780, 0x409ffe02, 0x1000640e,
740x40800204, 0x30801203, 0x40800405, 0x3ec40087,
750x40800606, 0x3ac10608, 0x3ac14609, 0x3ac1860a,
760xb060c107, 0x20801203, 0x413d8003, 0x38810602,
770x4020007f, 0x327fd780, 0x409ffe02, 0x10007f0c,
780x40800205, 0x30801204, 0x40800406, 0x3ec40083,
790x3ac14607, 0x3ac18608, 0xb0810103, 0x413d8002,
800x20801204, 0x38814603, 0x4020007f, 0x327feb80,
810x409ffe02, 0x30801203, 0x40800204, 0x3ec40087,
820x40800405, 0x1000650a, 0x40800606, 0x3ac10608,
830x3ac14609, 0x3ac1860a, 0xb060c107, 0x20801203,
840x38810602, 0xb0408588, 0x4020007f, 0x327fc980,
850x00400000, 0x40800003, 0x4020007f, 0x35000000,
860x00000000, 0x00000000, 0x00000000, 0x00000000,
870x00000000, 0x00000000, 0x00000000, 0x00000000,
880x00000000, 0x00000000, 0x00000000, 0x00000000,
890x00000000, 0x00000000, 0x00000000, 0x00000000,
900x00000000, 0x00000000, 0x00000000, 0x00000000,
910x00000000, 0x00000000, 0x00000000, 0x00000000,
920x00000000, 0x00000000, 0x00000000, 0x00000000,
930x00000000, 0x00000000, 0x00000000, 0x00000000,
940x00000000, 0x00000000, 0x00000000, 0x00000000,
950x00000000, 0x00000000, 0x00000000, 0x00000000,
960x00000000, 0x00000000, 0x00000000, 0x00000000,
970x00000000, 0x00000000, 0x00000000, 0x00000000,
980x00000000, 0x00000000, 0x00000000, 0x00000000,
990x00000000, 0x00000000, 0x00000000, 0x00000000,
1000x00000000, 0x00000000, 0x00000000, 0x00000000,
1010x00000000, 0x00000000, 0x00000000, 0x00000000,
1020x00000000, 0x00000000, 0x00000000, 0x00000000,
1030x00000000, 0x00000000, 0x00000000, 0x00000000,
1040x00000000, 0x00000000, 0x00000000, 0x00000000,
1050x00000000, 0x00000000, 0x00000000, 0x00000000,
1060x00000000, 0x00000000, 0x00000000, 0x00000000,
1070x00000000, 0x00000000, 0x00000000, 0x00000000,
1080x00000000, 0x00000000, 0x00000000, 0x00000000,
1090x00000000, 0x00000000, 0x00000000, 0x00000000,
1100x00000000, 0x00000000, 0x00000000, 0x00000000,
1110x00000000, 0x00000000, 0x00000000, 0x00000000,
1120x00000000, 0x00000000, 0x00000000, 0x00000000,
1130x00000000, 0x00000000, 0x00000000, 0x00000000,
1140x00000000, 0x00000000, 0x00000000, 0x00000000,
1150x00000000, 0x00000000, 0x00000000, 0x00000000,
1160x00000000, 0x00000000, 0x00000000, 0x00000000,
1170x00000000, 0x00000000, 0x00000000, 0x00000000,
1180x00000000, 0x00000000, 0x00000000, 0x00000000,
1190x00000000, 0x00000000, 0x00000000, 0x00000000,
1200x00000000, 0x00000000, 0x00000000, 0x00000000,
1210x00000000, 0x00000000, 0x00000000, 0x00000000,
1220x00000000, 0x00000000, 0x00000000, 0x00000000,
1230x00000000, 0x00000000, 0x00000000, 0x00000000,
1240x00000000, 0x00000000, 0x00000000, 0x00000000,
1250x00000000, 0x00000000, 0x00000000, 0x00000000,
1260x00000000, 0x00000000, 0x00000000, 0x00000000,
1270x00000000, 0x00000000, 0x00000000, 0x00000000,
1280x00000000, 0x00000000, 0x00000000, 0x00000000,
1290x00000000, 0x00000000, 0x00000000, 0x00000000,
1300x00000000, 0x00000000, 0x00000000, 0x00000000,
1310x00000000, 0x00000000, 0x00000000, 0x00000000,
1320x00000000, 0x00000000, 0x00000000, 0x00000000,
1330x00000000, 0x00000000, 0x00000000, 0x00000000,
1340x00000000, 0x00000000, 0x00000000, 0x00000000,
1350x00000000, 0x00000000, 0x00000000, 0x00000000,
1360x00000000, 0x00000000, 0x00000000, 0x00000000,
1370x00000000, 0x00000000, 0x00000000, 0x00000000,
1380x00000000, 0x00000000, 0x00000000, 0x00000000,
1390x00000000, 0x00000000, 0x00000000, 0x00000000,
1400x00000000, 0x00000000, 0x00000000, 0x00000000,
1410x00000000, 0x00000000, 0x00000000, 0x00000000,
1420x00000000, 0x00000000, 0x00000000, 0x00000000,
1430x00000000, 0x00000000, 0x00000000, 0x00000000,
1440x00000000, 0x00000000, 0x00000000, 0x00000000,
1450x00000000, 0x00000000, 0x00000000, 0x00000000,
1460x00000000, 0x00000000, 0x00000000, 0x00000000,
1470x00000000, 0x00000000, 0x00000000, 0x00000000,
1480x00000000, 0x00000000, 0x00000000, 0x00000000,
1490x00000000, 0x00000000, 0x00000000, 0x00000000,
1500x00000000, 0x00000000, 0x00000000, 0x00000000,
1510x00000000, 0x00000000, 0x00000000, 0x00000000,
1520x00000000, 0x00000000, 0x00000000, 0x00000000,
1530x00000000, 0x00000000, 0x00000000, 0x00000000,
1540x00000000, 0x00000000, 0x00000000, 0x00000000,
1550x00000000, 0x00000000, 0x00000000, 0x00000000,
1560x00000000, 0x00000000, 0x00000000, 0x00000000,
1570x00000000, 0x00000000, 0x00000000, 0x00000000,
1580x00000000, 0x00000000, 0x00000000, 0x00000000,
1590x00000000, 0x00000000, 0x00000000, 0x00000000,
1600x00000000, 0x00000000, 0x00000000, 0x00000000,
1610x00000000, 0x00000000, 0x00000000, 0x00000000,
1620x00000000, 0x00000000, 0x00000000, 0x00000000,
1630x00000000, 0x00000000, 0x00000000, 0x00000000,
1640x00000000, 0x00000000, 0x00000000, 0x00000000,
1650x00000000, 0x00000000, 0x00000000, 0x00000000,
1660x00000000, 0x00000000, 0x00000000, 0x00000000,
1670x00000000, 0x00000000, 0x00000000, 0x00000000,
1680x00000000, 0x00000000, 0x00000000, 0x00000000,
1690x00000000, 0x00000000, 0x00000000, 0x00000000,
1700x00000000, 0x00000000, 0x00000000, 0x00000000,
1710x00000000, 0x00000000, 0x00000000, 0x00000000,
1720x00000000, 0x00000000, 0x00000000, 0x00000000,
1730x00000000, 0x00000000, 0x00000000, 0x00000000,
1740x00000000, 0x00000000, 0x00000000, 0x00000000,
1750x00000000, 0x00000000, 0x00000000, 0x00000000,
1760x00000000, 0x00000000, 0x00000000, 0x00000000,
1770x00000000, 0x00000000, 0x00000000, 0x00000000,
1780x00000000, 0x00000000, 0x00000000, 0x00000000,
1790x00000000, 0x00000000, 0x00000000, 0x00000000,
1800x00000000, 0x00000000, 0x00000000, 0x00000000,
1810x00000000, 0x00000000, 0x00000000, 0x00000000,
1820x00000000, 0x00000000, 0x00000000, 0x00000000,
1830x00000000, 0x00000000, 0x00000000, 0x00000000,
1840x00000000, 0x00000000, 0x00000000, 0x00000000,
1850x00000000, 0x00000000, 0x00000000, 0x00000000,
1860x00000000, 0x00000000, 0x00000000, 0x00000000,
1870x00000000, 0x00000000, 0x00000000, 0x00000000,
1880x00000000, 0x00000000, 0x00000000, 0x00000000,
1890x00000000, 0x00000000, 0x00000000, 0x00000000,
1900x00000000, 0x00000000, 0x00000000, 0x00000000,
1910x00000000, 0x00000000, 0x00000000, 0x00000000,
1920x00000000, 0x00000000, 0x00000000, 0x00000000,
1930x00000000, 0x00000000, 0x00000000, 0x00000000,
1940x00000000, 0x00000000, 0x00000000, 0x00000000,
1950x00000000, 0x00000000, 0x00000000, 0x00000000,
1960x00000000, 0x00000000, 0x00000000, 0x00000000,
1970x00000000, 0x00000000, 0x00000000, 0x00000000,
1980x00000000, 0x00000000, 0x00000000, 0x00000000,
1990x00000000, 0x00000000, 0x00000000, 0x00000000,
2000x00000000, 0x00000000, 0x00000000, 0x00000000,
2010x00000000, 0x00000000, 0x00000000, 0x00000000,
2020x00000000, 0x00000000, 0x00000000, 0x00000000,
2030x00000000, 0x00000000, 0x00000000, 0x00000000,
2040x00000000, 0x00000000, 0x00000000, 0x00000000,
2050x00000000, 0x00000000, 0x00000000, 0x00000000,
2060x00000000, 0x00000000, 0x00000000, 0x00000000,
2070x00000000, 0x00000000, 0x00000000, 0x00000000,
2080x00000000, 0x00000000, 0x00000000, 0x00000000,
2090x00000000, 0x00000000, 0x00000000, 0x00000000,
2100x00000000, 0x00000000, 0x00000000, 0x00000000,
2110x00000000, 0x00000000, 0x00000000, 0x00000000,
2120x00000000, 0x00000000, 0x00000000, 0x00000000,
2130x00000000, 0x00000000, 0x00000000, 0x00000000,
2140x00000000, 0x00000000, 0x00000000, 0x00000000,
2150x00000000, 0x00000000, 0x00000000, 0x00000000,
2160x00000000, 0x00000000, 0x00000000, 0x00000000,
2170x00000000, 0x00000000, 0x00000000, 0x00000000,
2180x00000000, 0x00000000, 0x00000000, 0x00000000,
2190x00000000, 0x00000000, 0x00000000, 0x00000000,
2200x00000000, 0x00000000, 0x00000000, 0x00000000,
2210x00000000, 0x00000000, 0x00000000, 0x00000000,
2220x00000000, 0x00000000, 0x00000000, 0x00000000,
2230x00000000, 0x00000000, 0x00000000, 0x00000000,
2240x00000000, 0x00000000, 0x00000000, 0x00000000,
2250x00000000, 0x00000000, 0x00000000, 0x00000000,
2260x00000000, 0x00000000, 0x00000000, 0x00000000,
2270x00000000, 0x00000000, 0x00000000, 0x00000000,
2280x00000000, 0x00000000, 0x00000000, 0x00000000,
2290x00000000, 0x00000000, 0x00000000, 0x00000000,
2300x00000000, 0x00000000, 0x00000000, 0x00000000,
231};
diff --git a/arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped b/arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped
new file mode 100644
index 000000000000..39e54003f1df
--- /dev/null
+++ b/arch/powerpc/platforms/cell/spufs/spu_save_dump.h_shipped
@@ -0,0 +1,191 @@
1/*
2 * spu_save_dump.h: Copyright (C) 2005 IBM.
3 * Hex-dump auto generated from spu_save.c.
4 * Do not edit!
5 */
6static unsigned int spu_save_code[] __page_aligned = {
70x20805000, 0x20805201, 0x20805402, 0x20805603,
80x20805804, 0x20805a05, 0x20805c06, 0x20805e07,
90x20806008, 0x20806209, 0x2080640a, 0x2080660b,
100x2080680c, 0x20806a0d, 0x20806c0e, 0x20806e0f,
110x4201c003, 0x33800184, 0x1c010204, 0x40200000,
120x24000190, 0x24004191, 0x24008192, 0x2400c193,
130x141fc205, 0x23fffd84, 0x1c100183, 0x217ffb85,
140x40800000, 0x409ff801, 0x24000080, 0x24fd8081,
150x1cd80081, 0x33000180, 0x00000000, 0x00000000,
160x01a00182, 0x3ec00083, 0xb1c38103, 0x01a00204,
170x3ec10082, 0x4201400d, 0xb1c38202, 0x01a00583,
180x34218682, 0x3ed80684, 0xb0408184, 0x24218682,
190x01a00603, 0x00200000, 0x34214682, 0x3ed40684,
200xb0408184, 0x40800003, 0x24214682, 0x21a00083,
210x40800082, 0x21a00b02, 0x4020007f, 0x1000251e,
220x40a80002, 0x32800008, 0x4205c00c, 0x00200000,
230x40a0000b, 0x3f82070f, 0x4080020a, 0x40800709,
240x3fe3078f, 0x3fbf0783, 0x3f200183, 0x3fbe0183,
250x3fe30187, 0x18008387, 0x4205c002, 0x3ac30404,
260x1cffc489, 0x00200000, 0x18008403, 0x38830402,
270x4cffc486, 0x3ac28185, 0xb0408584, 0x28830402,
280x1c020408, 0x38828182, 0xb0408385, 0x1802c387,
290x28828182, 0x217ff886, 0x04000582, 0x32800007,
300x21a00802, 0x3fbf0705, 0x3f200285, 0x3fbe0285,
310x3fe30285, 0x21a00885, 0x04000603, 0x21a00903,
320x40803c02, 0x21a00982, 0x04000386, 0x21a00a06,
330x40801202, 0x21a00a82, 0x73000003, 0x24200683,
340x01a00404, 0x00200000, 0x34204682, 0x3ec40683,
350xb0408203, 0x24204682, 0x01a00783, 0x00200000,
360x3421c682, 0x3edc0684, 0xb0408184, 0x2421c682,
370x21a00806, 0x21a00885, 0x3fbf0784, 0x3f200204,
380x3fbe0204, 0x3fe30204, 0x21a00904, 0x40804002,
390x21a00982, 0x21a00a06, 0x40805a02, 0x21a00a82,
400x04000683, 0x21a00803, 0x21a00885, 0x21a00904,
410x40848002, 0x21a00982, 0x21a00a06, 0x40801002,
420x21a00a82, 0x21a00a06, 0x40806602, 0x00200000,
430x35800009, 0x21a00a82, 0x40800083, 0x21a00b83,
440x01a00c02, 0x01a00d83, 0x00003ffb, 0x40800003,
450x4020007f, 0x35000000, 0x00000000, 0x00000000,
460x00000000, 0x00000000, 0x00000000, 0x00000000,
470x00000000, 0x00000000, 0x00000000, 0x00000000,
480x00000000, 0x00000000, 0x00000000, 0x00000000,
490x00000000, 0x00000000, 0x00000000, 0x00000000,
500x00000000, 0x00000000, 0x00000000, 0x00000000,
510x00000000, 0x00000000, 0x00000000, 0x00000000,
520x00000000, 0x00000000, 0x00000000, 0x00000000,
530x00000000, 0x00000000, 0x00000000, 0x00000000,
540x00000000, 0x00000000, 0x00000000, 0x00000000,
550x00000000, 0x00000000, 0x00000000, 0x00000000,
560x00000000, 0x00000000, 0x00000000, 0x00000000,
570x00000000, 0x00000000, 0x00000000, 0x00000000,
580x00000000, 0x00000000, 0x00000000, 0x00000000,
590x00000000, 0x00000000, 0x00000000, 0x00000000,
600x00000000, 0x00000000, 0x00000000, 0x00000000,
610x00000000, 0x00000000, 0x00000000, 0x00000000,
620x00000000, 0x00000000, 0x00000000, 0x00000000,
630x00000000, 0x00000000, 0x00000000, 0x00000000,
640x00000000, 0x00000000, 0x00000000, 0x00000000,
650x00000000, 0x00000000, 0x00000000, 0x00000000,
660x00000000, 0x00000000, 0x00000000, 0x00000000,
670x00000000, 0x00000000, 0x00000000, 0x00000000,
680x00000000, 0x00000000, 0x00000000, 0x00000000,
690x00000000, 0x00000000, 0x00000000, 0x00000000,
700x00000000, 0x00000000, 0x00000000, 0x00000000,
710x00000000, 0x00000000, 0x00000000, 0x00000000,
720x00000000, 0x00000000, 0x00000000, 0x00000000,
730x00000000, 0x00000000, 0x00000000, 0x00000000,
740x00000000, 0x00000000, 0x00000000, 0x00000000,
750x00000000, 0x00000000, 0x00000000, 0x00000000,
760x00000000, 0x00000000, 0x00000000, 0x00000000,
770x00000000, 0x00000000, 0x00000000, 0x00000000,
780x00000000, 0x00000000, 0x00000000, 0x00000000,
790x00000000, 0x00000000, 0x00000000, 0x00000000,
800x00000000, 0x00000000, 0x00000000, 0x00000000,
810x00000000, 0x00000000, 0x00000000, 0x00000000,
820x00000000, 0x00000000, 0x00000000, 0x00000000,
830x00000000, 0x00000000, 0x00000000, 0x00000000,
840x00000000, 0x00000000, 0x00000000, 0x00000000,
850x00000000, 0x00000000, 0x00000000, 0x00000000,
860x00000000, 0x00000000, 0x00000000, 0x00000000,
870x00000000, 0x00000000, 0x00000000, 0x00000000,
880x00000000, 0x00000000, 0x00000000, 0x00000000,
890x00000000, 0x00000000, 0x00000000, 0x00000000,
900x00000000, 0x00000000, 0x00000000, 0x00000000,
910x00000000, 0x00000000, 0x00000000, 0x00000000,
920x00000000, 0x00000000, 0x00000000, 0x00000000,
930x00000000, 0x00000000, 0x00000000, 0x00000000,
940x00000000, 0x00000000, 0x00000000, 0x00000000,
950x00000000, 0x00000000, 0x00000000, 0x00000000,
960x00000000, 0x00000000, 0x00000000, 0x00000000,
970x00000000, 0x00000000, 0x00000000, 0x00000000,
980x00000000, 0x00000000, 0x00000000, 0x00000000,
990x00000000, 0x00000000, 0x00000000, 0x00000000,
1000x00000000, 0x00000000, 0x00000000, 0x00000000,
1010x00000000, 0x00000000, 0x00000000, 0x00000000,
1020x00000000, 0x00000000, 0x00000000, 0x00000000,
1030x00000000, 0x00000000, 0x00000000, 0x00000000,
1040x00000000, 0x00000000, 0x00000000, 0x00000000,
1050x00000000, 0x00000000, 0x00000000, 0x00000000,
1060x00000000, 0x00000000, 0x00000000, 0x00000000,
1070x00000000, 0x00000000, 0x00000000, 0x00000000,
1080x00000000, 0x00000000, 0x00000000, 0x00000000,
1090x00000000, 0x00000000, 0x00000000, 0x00000000,
1100x00000000, 0x00000000, 0x00000000, 0x00000000,
1110x00000000, 0x00000000, 0x00000000, 0x00000000,
1120x00000000, 0x00000000, 0x00000000, 0x00000000,
1130x00000000, 0x00000000, 0x00000000, 0x00000000,
1140x00000000, 0x00000000, 0x00000000, 0x00000000,
1150x00000000, 0x00000000, 0x00000000, 0x00000000,
1160x00000000, 0x00000000, 0x00000000, 0x00000000,
1170x00000000, 0x00000000, 0x00000000, 0x00000000,
1180x00000000, 0x00000000, 0x00000000, 0x00000000,
1190x00000000, 0x00000000, 0x00000000, 0x00000000,
1200x00000000, 0x00000000, 0x00000000, 0x00000000,
1210x00000000, 0x00000000, 0x00000000, 0x00000000,
1220x00000000, 0x00000000, 0x00000000, 0x00000000,
1230x00000000, 0x00000000, 0x00000000, 0x00000000,
1240x00000000, 0x00000000, 0x00000000, 0x00000000,
1250x00000000, 0x00000000, 0x00000000, 0x00000000,
1260x00000000, 0x00000000, 0x00000000, 0x00000000,
1270x00000000, 0x00000000, 0x00000000, 0x00000000,
1280x00000000, 0x00000000, 0x00000000, 0x00000000,
1290x00000000, 0x00000000, 0x00000000, 0x00000000,
1300x00000000, 0x00000000, 0x00000000, 0x00000000,
1310x00000000, 0x00000000, 0x00000000, 0x00000000,
1320x00000000, 0x00000000, 0x00000000, 0x00000000,
1330x00000000, 0x00000000, 0x00000000, 0x00000000,
1340x00000000, 0x00000000, 0x00000000, 0x00000000,
1350x00000000, 0x00000000, 0x00000000, 0x00000000,
1360x00000000, 0x00000000, 0x00000000, 0x00000000,
1370x00000000, 0x00000000, 0x00000000, 0x00000000,
1380x00000000, 0x00000000, 0x00000000, 0x00000000,
1390x00000000, 0x00000000, 0x00000000, 0x00000000,
1400x00000000, 0x00000000, 0x00000000, 0x00000000,
1410x00000000, 0x00000000, 0x00000000, 0x00000000,
1420x00000000, 0x00000000, 0x00000000, 0x00000000,
1430x00000000, 0x00000000, 0x00000000, 0x00000000,
1440x00000000, 0x00000000, 0x00000000, 0x00000000,
1450x00000000, 0x00000000, 0x00000000, 0x00000000,
1460x00000000, 0x00000000, 0x00000000, 0x00000000,
1470x00000000, 0x00000000, 0x00000000, 0x00000000,
1480x00000000, 0x00000000, 0x00000000, 0x00000000,
1490x00000000, 0x00000000, 0x00000000, 0x00000000,
1500x00000000, 0x00000000, 0x00000000, 0x00000000,
1510x00000000, 0x00000000, 0x00000000, 0x00000000,
1520x00000000, 0x00000000, 0x00000000, 0x00000000,
1530x00000000, 0x00000000, 0x00000000, 0x00000000,
1540x00000000, 0x00000000, 0x00000000, 0x00000000,
1550x00000000, 0x00000000, 0x00000000, 0x00000000,
1560x00000000, 0x00000000, 0x00000000, 0x00000000,
1570x00000000, 0x00000000, 0x00000000, 0x00000000,
1580x00000000, 0x00000000, 0x00000000, 0x00000000,
1590x00000000, 0x00000000, 0x00000000, 0x00000000,
1600x00000000, 0x00000000, 0x00000000, 0x00000000,
1610x00000000, 0x00000000, 0x00000000, 0x00000000,
1620x00000000, 0x00000000, 0x00000000, 0x00000000,
1630x00000000, 0x00000000, 0x00000000, 0x00000000,
1640x00000000, 0x00000000, 0x00000000, 0x00000000,
1650x00000000, 0x00000000, 0x00000000, 0x00000000,
1660x00000000, 0x00000000, 0x00000000, 0x00000000,
1670x00000000, 0x00000000, 0x00000000, 0x00000000,
1680x00000000, 0x00000000, 0x00000000, 0x00000000,
1690x00000000, 0x00000000, 0x00000000, 0x00000000,
1700x00000000, 0x00000000, 0x00000000, 0x00000000,
1710x00000000, 0x00000000, 0x00000000, 0x00000000,
1720x00000000, 0x00000000, 0x00000000, 0x00000000,
1730x00000000, 0x00000000, 0x00000000, 0x00000000,
1740x00000000, 0x00000000, 0x00000000, 0x00000000,
1750x00000000, 0x00000000, 0x00000000, 0x00000000,
1760x00000000, 0x00000000, 0x00000000, 0x00000000,
1770x00000000, 0x00000000, 0x00000000, 0x00000000,
1780x00000000, 0x00000000, 0x00000000, 0x00000000,
1790x00000000, 0x00000000, 0x00000000, 0x00000000,
1800x00000000, 0x00000000, 0x00000000, 0x00000000,
1810x00000000, 0x00000000, 0x00000000, 0x00000000,
1820x00000000, 0x00000000, 0x00000000, 0x00000000,
1830x00000000, 0x00000000, 0x00000000, 0x00000000,
1840x00000000, 0x00000000, 0x00000000, 0x00000000,
1850x00000000, 0x00000000, 0x00000000, 0x00000000,
1860x00000000, 0x00000000, 0x00000000, 0x00000000,
1870x00000000, 0x00000000, 0x00000000, 0x00000000,
1880x00000000, 0x00000000, 0x00000000, 0x00000000,
1890x00000000, 0x00000000, 0x00000000, 0x00000000,
1900x00000000, 0x00000000, 0x00000000, 0x00000000,
191};
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index b37fe797ea1c..67aff57faf60 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -28,6 +28,7 @@
28#include <linux/fs.h> 28#include <linux/fs.h>
29 29
30#include <asm/spu.h> 30#include <asm/spu.h>
31#include <asm/spu_csa.h>
31 32
32/* The magic number for our file system */ 33/* The magic number for our file system */
33enum { 34enum {
@@ -36,6 +37,7 @@ enum {
36 37
37struct spu_context { 38struct spu_context {
38 struct spu *spu; /* pointer to a physical SPU */ 39 struct spu *spu; /* pointer to a physical SPU */
40 struct spu_state csa; /* SPU context save area. */
39 struct rw_semaphore backing_sema; /* protects the above */ 41 struct rw_semaphore backing_sema; /* protects the above */
40 spinlock_t mmio_lock; /* protects mmio access */ 42 spinlock_t mmio_lock; /* protects mmio access */
41 43
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c
new file mode 100644
index 000000000000..6804342e99c3
--- /dev/null
+++ b/arch/powerpc/platforms/cell/spufs/switch.c
@@ -0,0 +1,174 @@
1/*
2 * spu_switch.c
3 *
4 * (C) Copyright IBM Corp. 2005
5 *
6 * Author: Mark Nutter <mnutter@us.ibm.com>
7 *
8 * Host-side part of SPU context switch sequence outlined in
9 * Synergistic Processor Element, Book IV.
10 *
11 * A fully premptive switch of an SPE is very expensive in terms
12 * of time and system resources. SPE Book IV indicates that SPE
13 * allocation should follow a "serially reusable device" model,
14 * in which the SPE is assigned a task until it completes. When
15 * this is not possible, this sequence may be used to premptively
16 * save, and then later (optionally) restore the context of a
17 * program executing on an SPE.
18 *
19 *
20 * This program is free software; you can redistribute it and/or modify
21 * it under the terms of the GNU General Public License as published by
22 * the Free Software Foundation; either version 2, or (at your option)
23 * any later version.
24 *
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
29 *
30 * You should have received a copy of the GNU General Public License
31 * along with this program; if not, write to the Free Software
32 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 */
34
35#include <linux/config.h>
36#include <linux/module.h>
37#include <linux/errno.h>
38#include <linux/sched.h>
39#include <linux/kernel.h>
40#include <linux/mm.h>
41#include <linux/vmalloc.h>
42#include <linux/smp.h>
43#include <linux/smp_lock.h>
44#include <linux/stddef.h>
45#include <linux/unistd.h>
46
47#include <asm/io.h>
48#include <asm/spu.h>
49#include <asm/spu_csa.h>
50#include <asm/mmu_context.h>
51
52#include "spu_save_dump.h"
53#include "spu_restore_dump.h"
54
55/**
56 * spu_save - SPU context save, with locking.
57 * @prev: pointer to SPU context save area, to be saved.
58 * @spu: pointer to SPU iomem structure.
59 *
60 * Acquire locks, perform the save operation then return.
61 */
62int spu_save(struct spu_state *prev, struct spu *spu)
63{
64 /* XXX missing */
65
66 return 0;
67}
68
69/**
70 * spu_restore - SPU context restore, with harvest and locking.
71 * @new: pointer to SPU context save area, to be restored.
72 * @spu: pointer to SPU iomem structure.
73 *
74 * Perform harvest + restore, as we may not be coming
75 * from a previous succesful save operation, and the
76 * hardware state is unknown.
77 */
78int spu_restore(struct spu_state *new, struct spu *spu)
79{
80 /* XXX missing */
81
82 return 0;
83}
84
85/**
86 * spu_switch - SPU context switch (save + restore).
87 * @prev: pointer to SPU context save area, to be saved.
88 * @new: pointer to SPU context save area, to be restored.
89 * @spu: pointer to SPU iomem structure.
90 *
91 * Perform save, then restore. Only harvest if the
92 * save fails, as cleanup is otherwise not needed.
93 */
94int spu_switch(struct spu_state *prev, struct spu_state *new, struct spu *spu)
95{
96 /* XXX missing */
97
98 return 0;
99}
100
101static void init_prob(struct spu_state *csa)
102{
103 csa->spu_chnlcnt_RW[9] = 1;
104 csa->spu_chnlcnt_RW[21] = 16;
105 csa->spu_chnlcnt_RW[23] = 1;
106 csa->spu_chnlcnt_RW[28] = 1;
107 csa->spu_chnlcnt_RW[30] = 1;
108 csa->prob.spu_runcntl_RW = SPU_RUNCNTL_STOP;
109}
110
111static void init_priv1(struct spu_state *csa)
112{
113 /* Enable decode, relocate, tlbie response, master runcntl. */
114 csa->priv1.mfc_sr1_RW = MFC_STATE1_LOCAL_STORAGE_DECODE_MASK |
115 MFC_STATE1_MASTER_RUN_CONTROL_MASK |
116 MFC_STATE1_PROBLEM_STATE_MASK |
117 MFC_STATE1_RELOCATE_MASK | MFC_STATE1_BUS_TLBIE_MASK;
118
119 /* Set storage description. */
120 csa->priv1.mfc_sdr_RW = mfspr(SPRN_SDR1);
121
122 /* Enable OS-specific set of interrupts. */
123 csa->priv1.int_mask_class0_RW = CLASS0_ENABLE_DMA_ALIGNMENT_INTR |
124 CLASS0_ENABLE_INVALID_DMA_COMMAND_INTR |
125 CLASS0_ENABLE_SPU_ERROR_INTR;
126 csa->priv1.int_mask_class1_RW = CLASS1_ENABLE_SEGMENT_FAULT_INTR |
127 CLASS1_ENABLE_STORAGE_FAULT_INTR;
128 csa->priv1.int_mask_class2_RW = CLASS2_ENABLE_MAILBOX_INTR |
129 CLASS2_ENABLE_SPU_STOP_INTR | CLASS2_ENABLE_SPU_HALT_INTR;
130}
131
132static void init_priv2(struct spu_state *csa)
133{
134 csa->priv2.spu_lslr_RW = LS_ADDR_MASK;
135 csa->priv2.mfc_control_RW = MFC_CNTL_RESUME_DMA_QUEUE |
136 MFC_CNTL_NORMAL_DMA_QUEUE_OPERATION |
137 MFC_CNTL_DMA_QUEUES_EMPTY_MASK;
138}
139
140/**
141 * spu_alloc_csa - allocate and initialize an SPU context save area.
142 *
143 * Allocate and initialize the contents of an SPU context save area.
144 * This includes enabling address translation, interrupt masks, etc.,
145 * as appropriate for the given OS environment.
146 *
147 * Note that storage for the 'lscsa' is allocated separately,
148 * as it is by far the largest of the context save regions,
149 * and may need to be pinned or otherwise specially aligned.
150 */
151void spu_init_csa(struct spu_state *csa)
152{
153 struct spu_lscsa *lscsa;
154
155 if (!csa)
156 return;
157 memset(csa, 0, sizeof(struct spu_state));
158
159 lscsa = vmalloc(sizeof(struct spu_lscsa));
160 if (!lscsa)
161 return;
162
163 memset(lscsa, 0, sizeof(struct spu_lscsa));
164 csa->lscsa = lscsa;
165
166 init_prob(csa);
167 init_priv1(csa);
168 init_priv2(csa);
169}
170
171void spu_fini_csa(struct spu_state *csa)
172{
173 vfree(csa->lscsa);
174}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-05 17:14:22 -0500