Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
Dean Nelson | 45d9ca4 | 2008-04-22 14:46:56 -0500 | [diff] [blame] | 6 | * Copyright (c) 2004-2008 Silicon Graphics, Inc. All Rights Reserved. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 9 | /* |
| 10 | * Cross Partition Communication (XPC) partition support. |
| 11 | * |
| 12 | * This is the part of XPC that detects the presence/absence of |
| 13 | * other partitions. It provides a heartbeat and monitors the |
| 14 | * heartbeats of other partitions. |
| 15 | * |
| 16 | */ |
| 17 | |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 18 | #include <linux/device.h> |
| 19 | #include <linux/hardirq.h> |
Dean Nelson | 45d9ca4 | 2008-04-22 14:46:56 -0500 | [diff] [blame] | 20 | #include "xpc.h" |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 21 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 22 | /* XPC is exiting flag */ |
| 23 | int xpc_exiting; |
| 24 | |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 25 | /* this partition's reserved page pointers */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 26 | struct xpc_rsvd_page *xpc_rsvd_page; |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 27 | static unsigned long *xpc_part_nasids; |
| 28 | unsigned long *xpc_mach_nasids; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 29 | |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 30 | static int xpc_nasid_mask_nbytes; /* #of bytes in nasid mask */ |
| 31 | int xpc_nasid_mask_nlongs; /* #of longs in nasid mask */ |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 32 | |
Dean Nelson | bc63d38 | 2008-07-29 22:34:04 -0700 | [diff] [blame] | 33 | struct xpc_partition *xpc_partitions; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 34 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 35 | /* |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 36 | * Guarantee that the kmalloc'd memory is cacheline aligned. |
| 37 | */ |
Dean Nelson | 7682a4c | 2006-08-08 15:03:29 -0500 | [diff] [blame] | 38 | void * |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 39 | xpc_kmalloc_cacheline_aligned(size_t size, gfp_t flags, void **base) |
| 40 | { |
| 41 | /* see if kmalloc will give us cachline aligned memory by default */ |
| 42 | *base = kmalloc(size, flags); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 43 | if (*base == NULL) |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 44 | return NULL; |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 45 | |
| 46 | if ((u64)*base == L1_CACHE_ALIGN((u64)*base)) |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 47 | return *base; |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 48 | |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 49 | kfree(*base); |
| 50 | |
| 51 | /* nope, we'll have to do it ourselves */ |
| 52 | *base = kmalloc(size + L1_CACHE_BYTES, flags); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 53 | if (*base == NULL) |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 54 | return NULL; |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 55 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 56 | return (void *)L1_CACHE_ALIGN((u64)*base); |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 57 | } |
| 58 | |
Jes Sorensen | 7aa6ba4 | 2006-02-17 05:18:43 -0500 | [diff] [blame] | 59 | /* |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 60 | * Given a nasid, get the physical address of the partition's reserved page |
| 61 | * for that nasid. This function returns 0 on any error. |
| 62 | */ |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 63 | static unsigned long |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 64 | xpc_get_rsvd_page_pa(int nasid) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 65 | { |
Dean Nelson | 908787d | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 66 | enum xp_retval ret; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 67 | u64 cookie = 0; |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 68 | unsigned long rp_pa = nasid; /* seed with nasid */ |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 69 | size_t len = 0; |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 70 | size_t buf_len = 0; |
| 71 | void *buf = buf; |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 72 | void *buf_base = NULL; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 73 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 74 | while (1) { |
| 75 | |
Dean Nelson | 5b8669d | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 76 | /* !!! rp_pa will need to be _gpa on UV. |
| 77 | * ??? So do we save it into the architecture specific parts |
| 78 | * ??? of the xpc_partition structure? Do we rename this |
| 79 | * ??? function or have two versions? Rename rp_pa for UV to |
| 80 | * ??? rp_gpa? |
| 81 | */ |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 82 | ret = xpc_get_partition_rsvd_page_pa(buf, &cookie, &rp_pa, |
| 83 | &len); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 84 | |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 85 | dev_dbg(xpc_part, "SAL returned with ret=%d, cookie=0x%016lx, " |
| 86 | "address=0x%016lx, len=0x%016lx\n", ret, |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 87 | (unsigned long)cookie, rp_pa, len); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 88 | |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 89 | if (ret != xpNeedMoreInfo) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 90 | break; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 91 | |
Dean Nelson | ea57f80 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 92 | /* !!! L1_CACHE_ALIGN() is only a sn2-bte_copy requirement */ |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 93 | if (L1_CACHE_ALIGN(len) > buf_len) { |
Jesper Juhl | cbf283c | 2006-04-20 10:11:09 -0700 | [diff] [blame] | 94 | kfree(buf_base); |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 95 | buf_len = L1_CACHE_ALIGN(len); |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 96 | buf = xpc_kmalloc_cacheline_aligned(buf_len, GFP_KERNEL, |
| 97 | &buf_base); |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 98 | if (buf_base == NULL) { |
| 99 | dev_err(xpc_part, "unable to kmalloc " |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 100 | "len=0x%016lx\n", buf_len); |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 101 | ret = xpNoMemory; |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 102 | break; |
| 103 | } |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 104 | } |
| 105 | |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 106 | ret = xp_remote_memcpy(xp_pa(buf), rp_pa, buf_len); |
Dean Nelson | 908787d | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 107 | if (ret != xpSuccess) { |
| 108 | dev_dbg(xpc_part, "xp_remote_memcpy failed %d\n", ret); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 109 | break; |
| 110 | } |
| 111 | } |
| 112 | |
Jesper Juhl | cbf283c | 2006-04-20 10:11:09 -0700 | [diff] [blame] | 113 | kfree(buf_base); |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 114 | |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 115 | if (ret != xpSuccess) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 116 | rp_pa = 0; |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 117 | |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 118 | dev_dbg(xpc_part, "reserved page at phys address 0x%016lx\n", rp_pa); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 119 | return rp_pa; |
| 120 | } |
| 121 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 122 | /* |
| 123 | * Fill the partition reserved page with the information needed by |
| 124 | * other partitions to discover we are alive and establish initial |
| 125 | * communications. |
| 126 | */ |
Dean Nelson | 5b8669d | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 127 | int |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 128 | xpc_setup_rsvd_page(void) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 129 | { |
Dean Nelson | 5b8669d | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 130 | int ret; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 131 | struct xpc_rsvd_page *rp; |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 132 | unsigned long rp_pa; |
Dean Nelson | 81fe788 | 2008-07-29 22:34:15 -0700 | [diff] [blame] | 133 | unsigned long new_ts_jiffies; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 134 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 135 | /* get the local reserved page's address */ |
| 136 | |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 137 | preempt_disable(); |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 138 | rp_pa = xpc_get_rsvd_page_pa(xp_cpu_to_nasid(smp_processor_id())); |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 139 | preempt_enable(); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 140 | if (rp_pa == 0) { |
| 141 | dev_err(xpc_part, "SAL failed to locate the reserved page\n"); |
Dean Nelson | 5b8669d | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 142 | return -ESRCH; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 143 | } |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 144 | rp = (struct xpc_rsvd_page *)__va(rp_pa); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 145 | |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 146 | if (rp->SAL_version < 3) { |
| 147 | /* SAL_versions < 3 had a SAL_partid defined as a u8 */ |
| 148 | rp->SAL_partid &= 0xff; |
| 149 | } |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 150 | BUG_ON(rp->SAL_partid != xp_partition_id); |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 151 | |
| 152 | if (rp->SAL_partid < 0 || rp->SAL_partid >= xp_max_npartitions) { |
| 153 | dev_err(xpc_part, "the reserved page's partid of %d is outside " |
| 154 | "supported range (< 0 || >= %d)\n", rp->SAL_partid, |
| 155 | xp_max_npartitions); |
Dean Nelson | 5b8669d | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 156 | return -EINVAL; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | rp->version = XPC_RP_VERSION; |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 160 | rp->max_npartitions = xp_max_npartitions; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 161 | |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 162 | /* establish the actual sizes of the nasid masks */ |
| 163 | if (rp->SAL_version == 1) { |
| 164 | /* SAL_version 1 didn't set the nasids_size field */ |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 165 | rp->SAL_nasids_size = 128; |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 166 | } |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 167 | xpc_nasid_mask_nbytes = rp->SAL_nasids_size; |
| 168 | xpc_nasid_mask_nlongs = BITS_TO_LONGS(rp->SAL_nasids_size * |
| 169 | BITS_PER_BYTE); |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 170 | |
| 171 | /* setup the pointers to the various items in the reserved page */ |
| 172 | xpc_part_nasids = XPC_RP_PART_NASIDS(rp); |
| 173 | xpc_mach_nasids = XPC_RP_MACH_NASIDS(rp); |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 174 | |
Dean Nelson | 5b8669d | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 175 | ret = xpc_setup_rsvd_page_sn(rp); |
| 176 | if (ret != 0) |
| 177 | return ret; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 178 | |
| 179 | /* |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 180 | * Set timestamp of when reserved page was setup by XPC. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 181 | * This signifies to the remote partition that our reserved |
| 182 | * page is initialized. |
| 183 | */ |
Dean Nelson | 81fe788 | 2008-07-29 22:34:15 -0700 | [diff] [blame] | 184 | new_ts_jiffies = jiffies; |
| 185 | if (new_ts_jiffies == 0 || new_ts_jiffies == rp->ts_jiffies) |
| 186 | new_ts_jiffies++; |
| 187 | rp->ts_jiffies = new_ts_jiffies; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 188 | |
Dean Nelson | 5b8669d | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 189 | xpc_rsvd_page = rp; |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | void |
| 194 | xpc_teardown_rsvd_page(void) |
| 195 | { |
| 196 | /* a zero timestamp indicates our rsvd page is not initialized */ |
| 197 | xpc_rsvd_page->ts_jiffies = 0; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 198 | } |
| 199 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 200 | /* |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 201 | * Get a copy of a portion of the remote partition's rsvd page. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 202 | * |
| 203 | * remote_rp points to a buffer that is cacheline aligned for BTE copies and |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 204 | * is large enough to contain a copy of their reserved page header and |
| 205 | * part_nasids mask. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 206 | */ |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 207 | enum xp_retval |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 208 | xpc_get_remote_rp(int nasid, unsigned long *discovered_nasids, |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 209 | struct xpc_rsvd_page *remote_rp, unsigned long *remote_rp_pa) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 210 | { |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 211 | int l; |
Dean Nelson | 908787d | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 212 | enum xp_retval ret; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 213 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 214 | /* get the reserved page's physical address */ |
| 215 | |
Dean Nelson | 2792902 | 2005-10-25 14:11:53 -0500 | [diff] [blame] | 216 | *remote_rp_pa = xpc_get_rsvd_page_pa(nasid); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 217 | if (*remote_rp_pa == 0) |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 218 | return xpNoRsvdPageAddr; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 219 | |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 220 | /* pull over the reserved page header and part_nasids mask */ |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 221 | ret = xp_remote_memcpy(xp_pa(remote_rp), *remote_rp_pa, |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 222 | XPC_RP_HEADER_SIZE + xpc_nasid_mask_nbytes); |
Dean Nelson | 908787d | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 223 | if (ret != xpSuccess) |
| 224 | return ret; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 225 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 226 | if (discovered_nasids != NULL) { |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 227 | unsigned long *remote_part_nasids = |
| 228 | XPC_RP_PART_NASIDS(remote_rp); |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 229 | |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 230 | for (l = 0; l < xpc_nasid_mask_nlongs; l++) |
| 231 | discovered_nasids[l] |= remote_part_nasids[l]; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 232 | } |
| 233 | |
Dean Nelson | 81fe788 | 2008-07-29 22:34:15 -0700 | [diff] [blame] | 234 | /* zero timestamp indicates the reserved page has not been setup */ |
| 235 | if (remote_rp->ts_jiffies == 0) |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 236 | return xpRsvdPageNotSet; |
| 237 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 238 | if (XPC_VERSION_MAJOR(remote_rp->version) != |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 239 | XPC_VERSION_MAJOR(XPC_RP_VERSION)) { |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 240 | return xpBadVersion; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 241 | } |
| 242 | |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 243 | /* check that both remote and local partids are valid for each side */ |
Dean Nelson | aaa3cd6 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 244 | if (remote_rp->SAL_partid < 0 || |
| 245 | remote_rp->SAL_partid >= xp_max_npartitions || |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 246 | remote_rp->max_npartitions <= xp_partition_id) { |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 247 | return xpInvalidPartid; |
Dean Nelson | aaa3cd6 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 248 | } |
| 249 | |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 250 | if (remote_rp->SAL_partid == xp_partition_id) |
Dean Nelson | aaa3cd6 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 251 | return xpLocalPartid; |
Dean Nelson | 94bd270 | 2008-07-29 22:34:05 -0700 | [diff] [blame] | 252 | |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 253 | return xpSuccess; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 254 | } |
| 255 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 256 | /* |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 257 | * See if the other side has responded to a partition deactivate request |
| 258 | * from us. Though we requested the remote partition to deactivate with regard |
| 259 | * to us, we really only need to wait for the other side to disengage from us. |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 260 | */ |
| 261 | int |
| 262 | xpc_partition_disengaged(struct xpc_partition *part) |
| 263 | { |
Dean Nelson | 64d032b | 2008-05-12 14:02:03 -0700 | [diff] [blame] | 264 | short partid = XPC_PARTID(part); |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 265 | int disengaged; |
| 266 | |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 267 | disengaged = !xpc_partition_engaged(partid); |
| 268 | if (part->disengage_timeout) { |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 269 | if (!disengaged) { |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 270 | if (time_is_after_jiffies(part->disengage_timeout)) { |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 271 | /* timelimit hasn't been reached yet */ |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | /* |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 276 | * Other side hasn't responded to our deactivate |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 277 | * request in a timely fashion, so assume it's dead. |
| 278 | */ |
| 279 | |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 280 | dev_info(xpc_part, "deactivate request to remote " |
| 281 | "partition %d timed out\n", partid); |
| 282 | xpc_disengage_timedout = 1; |
| 283 | xpc_assume_partition_disengaged(partid); |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 284 | disengaged = 1; |
| 285 | } |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 286 | part->disengage_timeout = 0; |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 287 | |
| 288 | /* cancel the timer function, provided it's not us */ |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 289 | if (!in_interrupt()) |
| 290 | del_singleshot_timer_sync(&part->disengage_timer); |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 291 | |
Dean Nelson | 83469b5 | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 292 | DBUG_ON(part->act_state != XPC_P_AS_DEACTIVATING && |
| 293 | part->act_state != XPC_P_AS_INACTIVE); |
| 294 | if (part->act_state != XPC_P_AS_INACTIVE) |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 295 | xpc_wakeup_channel_mgr(part); |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 296 | |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 297 | xpc_cancel_partition_deactivation_request(part); |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 298 | } |
| 299 | return disengaged; |
| 300 | } |
| 301 | |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 302 | /* |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 303 | * Mark specified partition as active. |
| 304 | */ |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 305 | enum xp_retval |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 306 | xpc_mark_partition_active(struct xpc_partition *part) |
| 307 | { |
| 308 | unsigned long irq_flags; |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 309 | enum xp_retval ret; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 310 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 311 | dev_dbg(xpc_part, "setting partition %d to ACTIVE\n", XPC_PARTID(part)); |
| 312 | |
| 313 | spin_lock_irqsave(&part->act_lock, irq_flags); |
Dean Nelson | 83469b5 | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 314 | if (part->act_state == XPC_P_AS_ACTIVATING) { |
| 315 | part->act_state = XPC_P_AS_ACTIVE; |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 316 | ret = xpSuccess; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 317 | } else { |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 318 | DBUG_ON(part->reason == xpSuccess); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 319 | ret = part->reason; |
| 320 | } |
| 321 | spin_unlock_irqrestore(&part->act_lock, irq_flags); |
| 322 | |
| 323 | return ret; |
| 324 | } |
| 325 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 326 | /* |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 327 | * Start the process of deactivating the specified partition. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 328 | */ |
| 329 | void |
| 330 | xpc_deactivate_partition(const int line, struct xpc_partition *part, |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 331 | enum xp_retval reason) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 332 | { |
| 333 | unsigned long irq_flags; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 334 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 335 | spin_lock_irqsave(&part->act_lock, irq_flags); |
| 336 | |
Dean Nelson | 83469b5 | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 337 | if (part->act_state == XPC_P_AS_INACTIVE) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 338 | XPC_SET_REASON(part, reason, line); |
| 339 | spin_unlock_irqrestore(&part->act_lock, irq_flags); |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 340 | if (reason == xpReactivating) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 341 | /* we interrupt ourselves to reactivate partition */ |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 342 | xpc_request_partition_reactivation(part); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 343 | } |
| 344 | return; |
| 345 | } |
Dean Nelson | 83469b5 | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 346 | if (part->act_state == XPC_P_AS_DEACTIVATING) { |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 347 | if ((part->reason == xpUnloading && reason != xpUnloading) || |
| 348 | reason == xpReactivating) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 349 | XPC_SET_REASON(part, reason, line); |
| 350 | } |
| 351 | spin_unlock_irqrestore(&part->act_lock, irq_flags); |
| 352 | return; |
| 353 | } |
| 354 | |
Dean Nelson | 83469b5 | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 355 | part->act_state = XPC_P_AS_DEACTIVATING; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 356 | XPC_SET_REASON(part, reason, line); |
| 357 | |
| 358 | spin_unlock_irqrestore(&part->act_lock, irq_flags); |
| 359 | |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 360 | /* ask remote partition to deactivate with regard to us */ |
| 361 | xpc_request_partition_deactivation(part); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 362 | |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 363 | /* set a timelimit on the disengage phase of the deactivation request */ |
| 364 | part->disengage_timeout = jiffies + (xpc_disengage_timelimit * HZ); |
| 365 | part->disengage_timer.expires = part->disengage_timeout; |
| 366 | add_timer(&part->disengage_timer); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 367 | |
Dean Nelson | e54af72 | 2005-10-25 14:07:43 -0500 | [diff] [blame] | 368 | dev_dbg(xpc_part, "bringing partition %d down, reason = %d\n", |
| 369 | XPC_PARTID(part), reason); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 370 | |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 371 | xpc_partition_going_down(part, reason); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 372 | } |
| 373 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 374 | /* |
Dean Nelson | a607c38 | 2005-09-01 14:01:37 -0500 | [diff] [blame] | 375 | * Mark specified partition as inactive. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 376 | */ |
| 377 | void |
| 378 | xpc_mark_partition_inactive(struct xpc_partition *part) |
| 379 | { |
| 380 | unsigned long irq_flags; |
| 381 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 382 | dev_dbg(xpc_part, "setting partition %d to INACTIVE\n", |
| 383 | XPC_PARTID(part)); |
| 384 | |
| 385 | spin_lock_irqsave(&part->act_lock, irq_flags); |
Dean Nelson | 83469b5 | 2008-07-29 22:34:18 -0700 | [diff] [blame] | 386 | part->act_state = XPC_P_AS_INACTIVE; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 387 | spin_unlock_irqrestore(&part->act_lock, irq_flags); |
| 388 | part->remote_rp_pa = 0; |
| 389 | } |
| 390 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 391 | /* |
| 392 | * SAL has provided a partition and machine mask. The partition mask |
| 393 | * contains a bit for each even nasid in our partition. The machine |
| 394 | * mask contains a bit for each even nasid in the entire machine. |
| 395 | * |
| 396 | * Using those two bit arrays, we can determine which nasids are |
| 397 | * known in the machine. Each should also have a reserved page |
| 398 | * initialized if they are available for partitioning. |
| 399 | */ |
| 400 | void |
| 401 | xpc_discovery(void) |
| 402 | { |
| 403 | void *remote_rp_base; |
| 404 | struct xpc_rsvd_page *remote_rp; |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 405 | unsigned long remote_rp_pa; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 406 | int region; |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 407 | int region_size; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 408 | int max_regions; |
| 409 | int nasid; |
| 410 | struct xpc_rsvd_page *rp; |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 411 | unsigned long *discovered_nasids; |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 412 | enum xp_retval ret; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 413 | |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 414 | remote_rp = xpc_kmalloc_cacheline_aligned(XPC_RP_HEADER_SIZE + |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 415 | xpc_nasid_mask_nbytes, |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 416 | GFP_KERNEL, &remote_rp_base); |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 417 | if (remote_rp == NULL) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 418 | return; |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 419 | |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 420 | discovered_nasids = kzalloc(sizeof(long) * xpc_nasid_mask_nlongs, |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 421 | GFP_KERNEL); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 422 | if (discovered_nasids == NULL) { |
| 423 | kfree(remote_rp_base); |
| 424 | return; |
| 425 | } |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 426 | |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 427 | rp = (struct xpc_rsvd_page *)xpc_rsvd_page; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 428 | |
| 429 | /* |
| 430 | * The term 'region' in this context refers to the minimum number of |
| 431 | * nodes that can comprise an access protection grouping. The access |
| 432 | * protection is in regards to memory, IOI and IPI. |
| 433 | */ |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 434 | max_regions = 64; |
Dean Nelson | 261f3b4 | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 435 | region_size = xp_region_size; |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 436 | |
| 437 | switch (region_size) { |
| 438 | case 128: |
| 439 | max_regions *= 2; |
| 440 | case 64: |
| 441 | max_regions *= 2; |
| 442 | case 32: |
| 443 | max_regions *= 2; |
| 444 | region_size = 16; |
| 445 | DBUG_ON(!is_shub2()); |
| 446 | } |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 447 | |
| 448 | for (region = 0; region < max_regions; region++) { |
| 449 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 450 | if (xpc_exiting) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 451 | break; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 452 | |
| 453 | dev_dbg(xpc_part, "searching region %d\n", region); |
| 454 | |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 455 | for (nasid = (region * region_size * 2); |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 456 | nasid < ((region + 1) * region_size * 2); nasid += 2) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 457 | |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 458 | if (xpc_exiting) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 459 | break; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 460 | |
| 461 | dev_dbg(xpc_part, "checking nasid %d\n", nasid); |
| 462 | |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 463 | if (test_bit(nasid / 2, xpc_part_nasids)) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 464 | dev_dbg(xpc_part, "PROM indicates Nasid %d is " |
| 465 | "part of the local partition; skipping " |
| 466 | "region\n", nasid); |
| 467 | break; |
| 468 | } |
| 469 | |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 470 | if (!(test_bit(nasid / 2, xpc_mach_nasids))) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 471 | dev_dbg(xpc_part, "PROM indicates Nasid %d was " |
| 472 | "not on Numa-Link network at reset\n", |
| 473 | nasid); |
| 474 | continue; |
| 475 | } |
| 476 | |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 477 | if (test_bit(nasid / 2, discovered_nasids)) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 478 | dev_dbg(xpc_part, "Nasid %d is part of a " |
| 479 | "partition which was previously " |
| 480 | "discovered\n", nasid); |
| 481 | continue; |
| 482 | } |
| 483 | |
Dean Nelson | 33ba3c7 | 2008-07-29 22:34:07 -0700 | [diff] [blame] | 484 | /* pull over the rsvd page header & part_nasids mask */ |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 485 | |
| 486 | ret = xpc_get_remote_rp(nasid, discovered_nasids, |
Dean Nelson | 4a3ad2d | 2008-04-22 14:48:01 -0500 | [diff] [blame] | 487 | remote_rp, &remote_rp_pa); |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 488 | if (ret != xpSuccess) { |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 489 | dev_dbg(xpc_part, "unable to get reserved page " |
| 490 | "from nasid %d, reason=%d\n", nasid, |
| 491 | ret); |
| 492 | |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 493 | if (ret == xpLocalPartid) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 494 | break; |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 495 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 496 | continue; |
| 497 | } |
| 498 | |
Dean Nelson | a47d5da | 2008-07-29 22:34:09 -0700 | [diff] [blame] | 499 | xpc_request_partition_activation(remote_rp, |
| 500 | remote_rp_pa, nasid); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 501 | } |
| 502 | } |
| 503 | |
| 504 | kfree(discovered_nasids); |
| 505 | kfree(remote_rp_base); |
| 506 | } |
| 507 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 508 | /* |
| 509 | * Given a partid, get the nasids owned by that partition from the |
Dean Nelson | 3a7d555 | 2005-04-04 13:14:00 -0700 | [diff] [blame] | 510 | * remote partition's reserved page. |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 511 | */ |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 512 | enum xp_retval |
Dean Nelson | 64d032b | 2008-05-12 14:02:03 -0700 | [diff] [blame] | 513 | xpc_initiate_partid_to_nasids(short partid, void *nasid_mask) |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 514 | { |
| 515 | struct xpc_partition *part; |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 516 | unsigned long part_nasid_pa; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 517 | |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 518 | part = &xpc_partitions[partid]; |
Dean Nelson | 2c2b94f | 2008-04-22 14:50:17 -0500 | [diff] [blame] | 519 | if (part->remote_rp_pa == 0) |
Dean Nelson | 65c17b8 | 2008-05-12 14:02:02 -0700 | [diff] [blame] | 520 | return xpPartitionDown; |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 521 | |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 522 | memset(nasid_mask, 0, xpc_nasid_mask_nbytes); |
Dean Nelson | 4b38fcd | 2005-10-25 14:09:51 -0500 | [diff] [blame] | 523 | |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 524 | part_nasid_pa = (unsigned long)XPC_RP_PART_NASIDS(part->remote_rp_pa); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 525 | |
Dean Nelson | a812dcc | 2008-07-29 22:34:16 -0700 | [diff] [blame] | 526 | return xp_remote_memcpy(xp_pa(nasid_mask), part_nasid_pa, |
Dean Nelson | 04de741 | 2008-07-29 22:34:14 -0700 | [diff] [blame] | 527 | xpc_nasid_mask_nbytes); |
Dean Nelson | 89eb8eb | 2005-03-23 19:50:00 -0700 | [diff] [blame] | 528 | } |