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author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-05-15 10:26:50 -0400 |
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committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-05-15 10:26:50 -0400 |
commit | 12e04ffcd93b25dfd726d46338c2ee7d23de556e (patch) | |
tree | f91479a62805619168994fd3ee55e3ffa23fc24e /arch/s390/kernel/mem_detect.c | |
parent | 9eff37a8713939f218ab8bf0dc93f1d67af7b8b4 (diff) | |
parent | f722406faae2d073cc1d01063d1123c35425939e (diff) |
Merge tag 'v3.10-rc1' into stable/for-linus-3.10
Linux 3.10-rc1
* tag 'v3.10-rc1': (12273 commits)
Linux 3.10-rc1
[SCSI] qla2xxx: Update firmware link in Kconfig file.
[SCSI] iscsi class, qla4xxx: fix sess/conn refcounting when find fns are used
[SCSI] sas: unify the pointlessly separated enums sas_dev_type and sas_device_type
[SCSI] pm80xx: thermal, sas controller config and error handling update
[SCSI] pm80xx: NCQ error handling changes
[SCSI] pm80xx: WWN Modification for PM8081/88/89 controllers
[SCSI] pm80xx: Changed module name and debug messages update
[SCSI] pm80xx: Firmware flash memory free fix, with addition of new memory region for it
[SCSI] pm80xx: SPC new firmware changes for device id 0x8081 alone
[SCSI] pm80xx: Added SPCv/ve specific hardware functionalities and relevant changes in common files
[SCSI] pm80xx: MSI-X implementation for using 64 interrupts
[SCSI] pm80xx: Updated common functions common for SPC and SPCv/ve
[SCSI] pm80xx: Multiple inbound/outbound queue configuration
[SCSI] pm80xx: Added SPCv/ve specific ids, variables and modify for SPC
[SCSI] lpfc: fix up Kconfig dependencies
[SCSI] Handle MLQUEUE busy response in scsi_send_eh_cmnd
dm cache: set config value
dm cache: move config fns
dm thin: generate event when metadata threshold passed
...
Diffstat (limited to 'arch/s390/kernel/mem_detect.c')
-rw-r--r-- | arch/s390/kernel/mem_detect.c | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/arch/s390/kernel/mem_detect.c b/arch/s390/kernel/mem_detect.c deleted file mode 100644 index 22d502e885e..00000000000 --- a/arch/s390/kernel/mem_detect.c +++ /dev/null @@ -1,145 +0,0 @@ -/* - * Copyright IBM Corp. 2008, 2009 - * - * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <asm/ipl.h> -#include <asm/sclp.h> -#include <asm/setup.h> - -#define ADDR2G (1ULL << 31) - -static void find_memory_chunks(struct mem_chunk chunk[]) -{ - unsigned long long memsize, rnmax, rzm; - unsigned long addr = 0, size; - int i = 0, type; - - rzm = sclp_get_rzm(); - rnmax = sclp_get_rnmax(); - memsize = rzm * rnmax; - if (!rzm) - rzm = 1ULL << 17; - if (sizeof(long) == 4) { - rzm = min(ADDR2G, rzm); - memsize = memsize ? min(ADDR2G, memsize) : ADDR2G; - } - do { - size = 0; - type = tprot(addr); - do { - size += rzm; - if (memsize && addr + size >= memsize) - break; - } while (type == tprot(addr + size)); - if (type == CHUNK_READ_WRITE || type == CHUNK_READ_ONLY) { - chunk[i].addr = addr; - chunk[i].size = size; - chunk[i].type = type; - i++; - } - addr += size; - } while (addr < memsize && i < MEMORY_CHUNKS); -} - -void detect_memory_layout(struct mem_chunk chunk[]) -{ - unsigned long flags, cr0; - - memset(chunk, 0, MEMORY_CHUNKS * sizeof(struct mem_chunk)); - /* Disable IRQs, DAT and low address protection so tprot does the - * right thing and we don't get scheduled away with low address - * protection disabled. - */ - flags = __arch_local_irq_stnsm(0xf8); - __ctl_store(cr0, 0, 0); - __ctl_clear_bit(0, 28); - find_memory_chunks(chunk); - __ctl_load(cr0, 0, 0); - arch_local_irq_restore(flags); -} -EXPORT_SYMBOL(detect_memory_layout); - -/* - * Move memory chunks array from index "from" to index "to" - */ -static void mem_chunk_move(struct mem_chunk chunk[], int to, int from) -{ - int cnt = MEMORY_CHUNKS - to; - - memmove(&chunk[to], &chunk[from], cnt * sizeof(struct mem_chunk)); -} - -/* - * Initialize memory chunk - */ -static void mem_chunk_init(struct mem_chunk *chunk, unsigned long addr, - unsigned long size, int type) -{ - chunk->type = type; - chunk->addr = addr; - chunk->size = size; -} - -/* - * Create memory hole with given address, size, and type - */ -void create_mem_hole(struct mem_chunk chunk[], unsigned long addr, - unsigned long size, int type) -{ - unsigned long lh_start, lh_end, lh_size, ch_start, ch_end, ch_size; - int i, ch_type; - - for (i = 0; i < MEMORY_CHUNKS; i++) { - if (chunk[i].size == 0) - continue; - - /* Define chunk properties */ - ch_start = chunk[i].addr; - ch_size = chunk[i].size; - ch_end = ch_start + ch_size - 1; - ch_type = chunk[i].type; - - /* Is memory chunk hit by memory hole? */ - if (addr + size <= ch_start) - continue; /* No: memory hole in front of chunk */ - if (addr > ch_end) - continue; /* No: memory hole after chunk */ - - /* Yes: Define local hole properties */ - lh_start = max(addr, chunk[i].addr); - lh_end = min(addr + size - 1, ch_end); - lh_size = lh_end - lh_start + 1; - - if (lh_start == ch_start && lh_end == ch_end) { - /* Hole covers complete memory chunk */ - mem_chunk_init(&chunk[i], lh_start, lh_size, type); - } else if (lh_end == ch_end) { - /* Hole starts in memory chunk and convers chunk end */ - mem_chunk_move(chunk, i + 1, i); - mem_chunk_init(&chunk[i], ch_start, ch_size - lh_size, - ch_type); - mem_chunk_init(&chunk[i + 1], lh_start, lh_size, type); - i += 1; - } else if (lh_start == ch_start) { - /* Hole ends in memory chunk */ - mem_chunk_move(chunk, i + 1, i); - mem_chunk_init(&chunk[i], lh_start, lh_size, type); - mem_chunk_init(&chunk[i + 1], lh_end + 1, - ch_size - lh_size, ch_type); - break; - } else { - /* Hole splits memory chunk */ - mem_chunk_move(chunk, i + 2, i); - mem_chunk_init(&chunk[i], ch_start, - lh_start - ch_start, ch_type); - mem_chunk_init(&chunk[i + 1], lh_start, lh_size, type); - mem_chunk_init(&chunk[i + 2], lh_end + 1, - ch_end - lh_end, ch_type); - break; - } - } -} |