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authorMichael Ellerman <michael@ellerman.id.au>2005-08-03 20:21:23 +1000
committerPaul Mackerras <paulus@samba.org>2005-08-29 10:53:35 +1000
commit34c8f6961fc601294a38c5bd5ca12131b2e52674 (patch)
tree98035e5581a0addfca935fa2d8afddfc7c56c631 /arch
parent38e85dc18036804ada8698951cfad4e6114fec1b (diff)
downloadop-kernel-dev-34c8f6961fc601294a38c5bd5ca12131b2e52674.zip
op-kernel-dev-34c8f6961fc601294a38c5bd5ca12131b2e52674.tar.gz
[PATCH] ppc64: msChunks cleanups
Chunks are 256KB, so use constants for the size/shift/mask, rather than getting them from the msChunks struct. The iSeries debugger (??) might still need access to the values in the msChunks struct, so we keep them around for now, but set them from the constant values. Replace msChunks_entry typedef with regular u32. Simplify msChunks_alloc() to manipulate klimit directly, rather than via a parameter. Move msChunks_alloc() and msChunks into iSeries_setup.c, as that's where they're used. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/ppc64/kernel/LparData.c18
-rw-r--r--arch/ppc64/kernel/iSeries_setup.c20
2 files changed, 18 insertions, 20 deletions
diff --git a/arch/ppc64/kernel/LparData.c b/arch/ppc64/kernel/LparData.c
index 0ed77b2..0a9c23c 100644
--- a/arch/ppc64/kernel/LparData.c
+++ b/arch/ppc64/kernel/LparData.c
@@ -225,21 +225,3 @@ struct ItVpdAreas itVpdAreas = {
0,0
}
};
-
-struct msChunks msChunks;
-EXPORT_SYMBOL(msChunks);
-
-unsigned long
-msChunks_alloc(unsigned long mem, unsigned long num_chunks, unsigned long chunk_size)
-{
- _msChunks->num_chunks = num_chunks;
- _msChunks->chunk_size = chunk_size;
- _msChunks->chunk_shift = __ilog2(chunk_size);
- _msChunks->chunk_mask = (1UL<<_msChunks->chunk_shift)-1;
-
- mem = _ALIGN(mem, sizeof(msChunks_entry));
- _msChunks->abs = (msChunks_entry *)mem;
- mem += num_chunks * sizeof(msChunks_entry);
-
- return mem;
-}
diff --git a/arch/ppc64/kernel/iSeries_setup.c b/arch/ppc64/kernel/iSeries_setup.c
index 460e7df..e47984b 100644
--- a/arch/ppc64/kernel/iSeries_setup.c
+++ b/arch/ppc64/kernel/iSeries_setup.c
@@ -415,6 +415,22 @@ static void __init iSeries_init_early(void)
DBG(" <- iSeries_init_early()\n");
}
+struct msChunks msChunks = {
+ /* 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);
+
+void msChunks_alloc(unsigned long num_chunks)
+{
+ klimit = _ALIGN(klimit, sizeof(u32));
+ msChunks.abs = (u32 *)klimit;
+ klimit += num_chunks * sizeof(u32);
+ msChunks.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
@@ -452,7 +468,7 @@ static void __init build_iSeries_Memory_Map(void)
/* Chunk size on iSeries is 256K bytes */
totalChunks = (u32)HvLpConfig_getMsChunks();
- klimit = msChunks_alloc(klimit, totalChunks, 1UL << 18);
+ msChunks_alloc(totalChunks);
/*
* Get absolute address of our load area
@@ -498,7 +514,7 @@ static void __init build_iSeries_Memory_Map(void)
*/
hptFirstChunk = (u32)addr_to_chunk(HvCallHpt_getHptAddress());
hptSizePages = (u32)HvCallHpt_getHptPages();
- hptSizeChunks = hptSizePages >> (msChunks.chunk_shift - PAGE_SHIFT);
+ hptSizeChunks = hptSizePages >> (MSCHUNKS_CHUNK_SHIFT - PAGE_SHIFT);
hptLastChunk = hptFirstChunk + hptSizeChunks - 1;
printk("HPT absolute addr = %016lx, size = %dK\n",
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