summaryrefslogtreecommitdiff
path: root/target/linux/cns3xxx/patches-2.6.31/206-cns3xxx_raid_support.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/cns3xxx/patches-2.6.31/206-cns3xxx_raid_support.patch')
-rw-r--r--target/linux/cns3xxx/patches-2.6.31/206-cns3xxx_raid_support.patch438
1 files changed, 0 insertions, 438 deletions
diff --git a/target/linux/cns3xxx/patches-2.6.31/206-cns3xxx_raid_support.patch b/target/linux/cns3xxx/patches-2.6.31/206-cns3xxx_raid_support.patch
deleted file mode 100644
index d6a8bef..0000000
--- a/target/linux/cns3xxx/patches-2.6.31/206-cns3xxx_raid_support.patch
+++ /dev/null
@@ -1,438 +0,0 @@
---- a/crypto/xor.c
-+++ b/crypto/xor.c
-@@ -25,6 +25,26 @@
- /* The xor routines to use. */
- static struct xor_block_template *active_template;
-
-+#ifdef CONFIG_CNS3XXX_RAID
-+extern void do_cns_rdma_xorgen(unsigned int src_no, unsigned int bytes,
-+ void **bh_ptr, void *dst_ptr);
-+/**
-+ * xor_blocks - one pass xor
-+ * @src_count: source count
-+ * @bytes: length in bytes
-+ * @dest: dest
-+ * @srcs: srcs
-+ *
-+ * Desc:
-+ * 1. dest = xor(srcs[0...src_count-1]) within one calc
-+ * 2. don't care if dest also be placed in srcs list or not.
-+ */
-+void xor_blocks(unsigned int src_count, unsigned int bytes, void *dest,
-+ void **srcs)
-+{
-+ do_cns_rdma_xorgen(src_count, bytes, srcs, dest);
-+}
-+#else
- void
- xor_blocks(unsigned int src_count, unsigned int bytes, void *dest, void **srcs)
- {
-@@ -51,6 +71,7 @@ xor_blocks(unsigned int src_count, unsig
- p4 = (unsigned long *) srcs[3];
- active_template->do_5(bytes, dest, p1, p2, p3, p4);
- }
-+#endif /* CONFIG_CNS3XXX_RAID */
- EXPORT_SYMBOL(xor_blocks);
-
- /* Set of all registered templates. */
-@@ -95,7 +116,11 @@ do_xor_speed(struct xor_block_template *
- speed / 1000, speed % 1000);
- }
-
-+#ifdef CONFIG_CNS3XXX_RAID
-+int
-+#else
- static int __init
-+#endif /* CONFIG_CNS3XXX_RAID */
- calibrate_xor_blocks(void)
- {
- void *b1, *b2;
-@@ -139,7 +164,10 @@ calibrate_xor_blocks(void)
- if (f->speed > fastest->speed)
- fastest = f;
- }
--
-+#ifdef CONFIG_CNS3XXX_RAID
-+ /* preferred */
-+ fastest = template_list;
-+#endif /* CONFIG_CNS3XXX_RAID */
- printk(KERN_INFO "xor: using function: %s (%d.%03d MB/sec)\n",
- fastest->name, fastest->speed / 1000, fastest->speed % 1000);
-
-@@ -151,10 +179,20 @@ calibrate_xor_blocks(void)
- return 0;
- }
-
--static __exit void xor_exit(void) { }
-+#ifndef CONFIG_CNS3XXX_RAID
-+static __exit void xor_exit(void)
-+{
-+}
-+#endif /* ! CONFIG_CNS3XXX_RAID */
-
- MODULE_LICENSE("GPL");
-
-+#ifdef CONFIG_CNS3XXX_RAID
-+/*
-+ * Calibrate in R5 init.
-+ */
-+#else
- /* when built-in xor.o must initialize before drivers/md/md.o */
- core_initcall(calibrate_xor_blocks);
- module_exit(xor_exit);
-+#endif /* ! CONFIG_CNS3XXX_RAID */
---- a/drivers/md/Makefile
-+++ b/drivers/md/Makefile
-@@ -17,7 +17,7 @@ raid6_pq-y += raid6algos.o raid6recov.o
- raid6int8.o raid6int16.o raid6int32.o \
- raid6altivec1.o raid6altivec2.o raid6altivec4.o \
- raid6altivec8.o \
-- raid6mmx.o raid6sse1.o raid6sse2.o
-+ raid6mmx.o raid6sse1.o raid6sse2.o raid6cns.o
- hostprogs-y += mktables
-
- # Note: link order is important. All raid personalities
---- a/drivers/md/raid5.c
-+++ b/drivers/md/raid5.c
-@@ -1817,11 +1817,30 @@ static void compute_block_2(struct strip
- compute_parity6(sh, UPDATE_PARITY);
- return;
- } else {
-+#ifdef CONFIG_CNS3XXX_RAID
-+ void *ptrs[disks];
-+
-+ count = 0;
-+ i = d0_idx;
-+ do {
-+ ptrs[count++] = page_address(sh->dev[i].page);
-+ i = raid6_next_disk(i, disks);
-+ if (i != dd_idx1 && i != dd_idx2 &&
-+ !test_bit(R5_UPTODATE, &sh->dev[i].flags))
-+ printk
-+ ("compute_2 with missing block %d/%d\n",
-+ count, i);
-+ } while (i != d0_idx);
-+
-+ raid6_dataq_recov(disks, STRIPE_SIZE, faila, ptrs);
-+#else
-+
- /* We're missing D+Q; recompute D from P */
- compute_block_1(sh, ((dd_idx1 == sh->qd_idx) ?
- dd_idx2 : dd_idx1),
- 0);
- compute_parity6(sh, UPDATE_PARITY); /* Is this necessary? */
-+#endif /* CONFIG_CNS3XXX_RAID */
- return;
- }
- }
-@@ -5412,8 +5431,21 @@ static struct mdk_personality raid4_pers
- .quiesce = raid5_quiesce,
- };
-
-+#ifdef CONFIG_CNS3XXX_RAID
-+extern int calibrate_xor_blocks(void);
-+#endif /* CONFIG_CNS3XXX_RAID */
-+
- static int __init raid5_init(void)
- {
-+
-+#ifdef CONFIG_CNS3XXX_RAID
-+ /* Just execute calibrate xor blocks */
-+ int e;
-+ e = calibrate_xor_blocks();
-+ if (e)
-+ return e;
-+#endif /* CONFIG_CNS3XXX_RAID */
-+
- register_md_personality(&raid6_personality);
- register_md_personality(&raid5_personality);
- register_md_personality(&raid4_personality);
---- a/drivers/md/raid6algos.c
-+++ b/drivers/md/raid6algos.c
-@@ -49,6 +49,9 @@ extern const struct raid6_calls raid6_al
- extern const struct raid6_calls raid6_altivec2;
- extern const struct raid6_calls raid6_altivec4;
- extern const struct raid6_calls raid6_altivec8;
-+#ifdef CONFIG_CNS3XXX_RAID
-+extern const struct raid6_calls raid6_cns_raid;
-+#endif /* CONFIG_CNS3XXX_RAID */
-
- const struct raid6_calls * const raid6_algos[] = {
- &raid6_intx1,
-@@ -78,6 +81,11 @@ const struct raid6_calls * const raid6_a
- &raid6_altivec4,
- &raid6_altivec8,
- #endif
-+#ifdef CONFIG_CNS3XXX_RAID
-+ /* CNS3000 HW RAID acceleration */
-+ &raid6_cns_raid,
-+#endif /* CONFIG_CNS3XXX_RAID */
-+
- NULL
- };
-
-@@ -125,7 +133,9 @@ int __init raid6_select_algo(void)
- if ( !(*algo)->valid || (*algo)->valid() ) {
- perf = 0;
-
-+#ifndef CONFIG_CNS3XXX_RAID
- preempt_disable();
-+#endif
- j0 = jiffies;
- while ( (j1 = jiffies) == j0 )
- cpu_relax();
-@@ -134,7 +144,9 @@ int __init raid6_select_algo(void)
- (*algo)->gen_syndrome(disks, PAGE_SIZE, dptrs);
- perf++;
- }
-+#ifndef CONFIG_CNS3XXX_RAID
- preempt_enable();
-+#endif
-
- if ( (*algo)->prefer > bestprefer ||
- ((*algo)->prefer == bestprefer &&
---- /dev/null
-+++ b/drivers/md/raid6cns.c
-@@ -0,0 +1,38 @@
-+/*
-+ * raid6cns.c
-+ *
-+ * CNS3xxx xor & gen_syndrome functions
-+ *
-+ */
-+
-+#ifdef CONFIG_CNS3XXX_RAID
-+
-+#include <linux/raid/pq.h>
-+
-+extern void do_cns_rdma_gfgen(unsigned int src_no, unsigned int bytes, void **bh_ptr,
-+ void *p_dst, void *q_dst);
-+
-+/**
-+ * raid6_cnsraid_gen_syndrome - CNSRAID Syndrome Generate
-+ *
-+ * @disks: raid disks
-+ * @bytes: length
-+ * @ptrs: already arranged stripe ptrs,
-+ * disk0=[0], diskNNN=[disks-3],
-+ * P/Q=[z0+1] & [z0+2], or, [disks-2], [disks-1]
-+ */
-+static void raid6_cnsraid_gen_syndrome(int disks, size_t bytes, void **ptrs)
-+{
-+ do_cns_rdma_gfgen(disks - 2, bytes, ptrs, ptrs[disks-2], ptrs[disks-1]);
-+}
-+
-+const struct raid6_calls raid6_cns_raid = {
-+ raid6_cnsraid_gen_syndrome, /* callback */
-+ NULL, /* always valid */
-+ "CNS-RAID", /* name */
-+ 1 /* preferred: revise it to "0" to compare/compete with others algos */
-+};
-+
-+EXPORT_SYMBOL(raid6_cns_raid);
-+
-+#endif /* CONFIG_CNS3XXX_RAID */
---- a/drivers/md/raid6recov.c
-+++ b/drivers/md/raid6recov.c
-@@ -20,6 +20,136 @@
-
- #include <linux/raid/pq.h>
-
-+#ifdef CONFIG_CNS3XXX_RAID
-+#define R6_RECOV_PD 1
-+#define R6_RECOV_DD 2
-+#define R6_RECOV_DQ 3
-+extern void do_cns_rdma_gfgen_pd_dd_dq(unsigned int src_no, unsigned int bytes,
-+ void **bh_ptr, void *w1_dst,
-+ void *w2_dst, int pd_dd_qd,
-+ unsigned int w1_idx, unsigned int w2_idx,
-+ unsigned int *src_idx);
-+
-+/**
-+ * @disks: nr_disks
-+ * @bytes: len
-+ * @faila: 1st failed DD
-+ * @ptrs: ptrs by order {d0, d1, ..., da, ..., dn, P, Q}
-+ *
-+ * Desc:
-+ * new_read_ptrs = {d0, d1, ... dn, Q}
-+ * dd1 = faila
-+ * p_dst = P
-+ */
-+void raid6_datap_recov(int disks, size_t bytes, int faila, void **ptrs)
-+{
-+ int cnt = 0;
-+ int count = 0;
-+ void *p_dst, *q;
-+ void *dd1_dst;
-+ void *new_read_ptrs[disks - 2];
-+ unsigned int read_idx[disks - 2];
-+
-+ q = ptrs[disks - 1];
-+ p_dst = ptrs[disks - 2];
-+ dd1_dst = ptrs[faila];
-+
-+ while (cnt < disks) {
-+ if (cnt != faila && cnt != disks - 2) {
-+ new_read_ptrs[count] = ptrs[cnt];
-+ read_idx[count] = cnt;
-+ count++;
-+ }
-+ cnt++;
-+ }
-+
-+ do_cns_rdma_gfgen_pd_dd_dq(disks - 2, bytes,
-+ new_read_ptrs, p_dst, dd1_dst,
-+ R6_RECOV_PD, disks - 1, faila + 1, read_idx);
-+}
-+
-+/**
-+ * @disks: nr_disks
-+ * @bytes: len
-+ * @faila: 1st failed DD
-+ * @failb: 2nd failed DD
-+ * @ptrs: ptrs by order {d0, d1, ..., da, ..., db, ..., dn, P, Q}
-+ *
-+ * Desc:
-+ * new_read_ptrs = {d0, d1, ... dn, P, Q}
-+ * dd1_dst = faila
-+ * dd2_dst = failb
-+ */
-+void raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
-+ void **ptrs)
-+{
-+
-+ int cnt = 0;
-+ int count = 0;
-+ void *p, *q;
-+ void *dd1_dst, *dd2_dst;
-+ void *new_read_ptrs[disks - 2];
-+ unsigned int read_idx[disks - 2];
-+
-+ q = ptrs[disks - 1];
-+ p = ptrs[disks - 2];
-+ dd1_dst = ptrs[faila];
-+ dd2_dst = ptrs[failb];
-+
-+ while (cnt < disks) {
-+ if (cnt != faila && cnt != failb) {
-+ new_read_ptrs[count] = ptrs[cnt];
-+ read_idx[count] = cnt;
-+ count++;
-+ }
-+ cnt++;
-+ }
-+
-+ do_cns_rdma_gfgen_pd_dd_dq(disks - 2, bytes,
-+ new_read_ptrs, dd1_dst, dd2_dst,
-+ R6_RECOV_DD, faila + 1, failb + 1, read_idx);
-+}
-+
-+/**
-+ * @disks: nr_disks
-+ * @bytes: len
-+ * @faila: 1st failed DD
-+ * @ptrs: ptrs by order {d0, d1, ..., da, ..., dn, P, Q}
-+ *
-+ * Desc:
-+ * new_read_ptrs = {d0, d1, ... dn, P}
-+ * dd1 = faila
-+ * q_dst = Q
-+ */
-+void raid6_dataq_recov(int disks, size_t bytes, int faila, void **ptrs)
-+{
-+ int cnt = 0;
-+ int count = 0;
-+ void *q_dst, *p;
-+ void *dd1_dst;
-+ void *new_read_ptrs[disks - 2];
-+ unsigned int read_idx[disks - 2];
-+
-+ p = ptrs[disks - 2];
-+ q_dst = ptrs[disks - 1];
-+ dd1_dst = ptrs[faila];
-+
-+ while (cnt < disks) {
-+ if (cnt != faila && cnt != disks - 1) {
-+ new_read_ptrs[count] = ptrs[cnt];
-+ read_idx[count] = cnt;
-+ count++;
-+ }
-+ cnt++;
-+ }
-+
-+ do_cns_rdma_gfgen_pd_dd_dq(disks - 2, bytes,
-+ new_read_ptrs, dd1_dst, q_dst,
-+ R6_RECOV_DQ, faila + 1, disks, read_idx);
-+}
-+
-+#else /* CONFIG_CNS3XXX_RAID
-+
- /* Recover two failed data blocks. */
- void raid6_2data_recov(int disks, size_t bytes, int faila, int failb,
- void **ptrs)
-@@ -96,6 +226,7 @@ void raid6_datap_recov(int disks, size_t
- }
- }
- EXPORT_SYMBOL_GPL(raid6_datap_recov);
-+#endif /* CONFIG_CNS3XXX_RAID */
-
- #ifndef __KERNEL__
- /* Testing only */
---- a/include/linux/raid/pq.h
-+++ b/include/linux/raid/pq.h
-@@ -100,6 +100,9 @@ void raid6_2data_recov(int disks, size_t
- void raid6_datap_recov(int disks, size_t bytes, int faila, void **ptrs);
- void raid6_dual_recov(int disks, size_t bytes, int faila, int failb,
- void **ptrs);
-+#ifdef CONFIG_CNS3XXX_RAID
-+void raid6_dataq_recov(int disks, size_t bytes, int faila, void **ptrs);
-+#endif /* CONFIG_CNS3XXX_RAID */
-
- /* Some definitions to allow code to be compiled for testing in userspace */
- #ifndef __KERNEL__
---- a/include/linux/raid/xor.h
-+++ b/include/linux/raid/xor.h
-@@ -1,7 +1,11 @@
- #ifndef _XOR_H
- #define _XOR_H
-
-+#ifdef CONFIG_CNS3XXX_RAID
-+#define MAX_XOR_BLOCKS 32
-+#else
- #define MAX_XOR_BLOCKS 4
-+#endif /* CONFIG_CNS3XXX_RAID */
-
- extern void xor_blocks(unsigned int count, unsigned int bytes,
- void *dest, void **srcs);
---- a/mm/mempool.c
-+++ b/mm/mempool.c
-@@ -250,6 +250,28 @@ repeat_alloc:
- }
- EXPORT_SYMBOL(mempool_alloc);
-
-+#ifdef CONFIG_CNS3XXX_RAID
-+/**
-+ * acs_mempool_alloc - allocate an element from a specific memory pool
-+ * @pool: pointer to the memory pool which was allocated via
-+ * mempool_create().
-+ *
-+ * this function differs from mempool_alloc by directly allocating an element
-+ * from @pool without calling @pool->alloc().
-+ */
-+void *acs_mempool_alloc(mempool_t * pool)
-+{
-+ unsigned long flags;
-+ void *element = NULL;
-+
-+ spin_lock_irqsave(&pool->lock, flags);
-+ if (likely(pool->curr_nr))
-+ element = remove_element(pool);
-+ spin_unlock_irqrestore(&pool->lock, flags);
-+ return element;
-+}
-+#endif /* CONFIG_CNS3XXX_RAID */
-+
- /**
- * mempool_free - return an element to the pool.
- * @element: pool element pointer.
generated by cgit v1.1 at 2024-07-23 08:18:28 +0000