* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
- * Copyright (C) 1999,2001-2003 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (C) 1999,2001-2004 Silicon Graphics, Inc. All Rights Reserved.
*
* Module to export the system's Firmware Interface Tables, including
- * PROM revision numbers, in /proc
+ * PROM revision numbers and banners, in /proc
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/proc_fs.h>
#include <asm/system.h>
#include <asm/io.h>
-#include <asm/sn/sn2/addrs.h>
-#include <asm/sn/simulator.h>
-
-/* to lookup nasids */
+#include <asm/sn/sn_sal.h>
#include <asm/sn/sn_cpuid.h>
+#include <asm/sn/sn2/addrs.h>
MODULE_DESCRIPTION("PROM version reporting for /proc");
MODULE_AUTHOR("Chad Talbott");
MODULE_LICENSE("GPL");
-#undef DEBUG_PROMINFO
-
-#define TRACE_PROMINFO
-
-#if defined(DEBUG_PROMINFO)
-# define DPRINTK(x...) printk(KERN_DEBUG x)
-#else
-# define DPRINTK(x...)
-#endif
-
-#if defined(TRACE_PROMINFO) && defined(DEBUG_PROMINFO)
-# if defined(__GNUC__)
-# define TRACE() printk(KERN_DEBUG "%s:%d:%s\n", \
- __FILE__, __LINE__, __FUNCTION__)
-# else
-# define TRACE() printk(KERN_DEBUG "%s:%d\n", __LINE__, __FILE__)
-# endif
-#else
-# define TRACE()
-#endif
-
-/* Sub-regions determined by bits in Node Offset */
-#define LB_PROM_SPACE 0x0000000700000000ul /* Local LB PROM */
-
-#define FIT_SIGNATURE 0x2020205f5449465ful
/* Standard Intel FIT entry types */
#define FIT_ENTRY_FIT_HEADER 0x00 /* FIT header entry */
#define FIT_ENTRY_PAL_B 0x01 /* PAL_B entry */
#define FIT_TYPE(q) \
((unsigned) ((q) >> FIT_TYPE_SHIFT) & FIT_TYPE_MASK)
-#define FIT_ENTRY(type, maj, min, size) \
- ((((unsigned long)(maj) & FIT_MAJOR_MASK) << FIT_MAJOR_SHIFT) | \
- (((unsigned long)(min) & FIT_MINOR_MASK) << FIT_MINOR_SHIFT) | \
- (((unsigned long)(type) & FIT_TYPE_MASK) << FIT_TYPE_SHIFT) | \
- (size))
-
struct fit_type_map_t {
unsigned char type;
const char *name;
return "Unknown type";
}
-/* These two routines read the FIT table directly from the FLASH PROM
- * on a specific node. The PROM can only be accessed using aligned 64
- * bit reads, so we do that and then shift and mask the result to get
- * at each field.
+
+/* ============ BEGIN temp til old PROMs are no longer supported =============
+ *
+ * The OS should not make direct access to the PROM flash memory. Access to
+ * this region must be serialized with a PROM lock. If SAL on one cpu is
+ * updating the FLASH error log at the same time another cpu is accessing the
+ * PROM, data corruption will occur.
+ *
+ * To solve the problem, all flash PROM access has been moved to SAL. Because
+ * not all systems will have instant PROM updates, we need to support a new OS
+ * running on a system with old PROMs.
+ *
+ * This code should be deleted after 1 OS/PROM release has occurred & the OS
+ * no longer supports downrev PROMs. (PROM support should be in the 3.50
+ * PROMs).
+ */
+#define SUPPORT_OLD_PROMS
+#ifdef SUPPORT_OLD_PROMS
+
+
+#define FIT_SIGNATURE 0x2020205f5449465ful
+
+/* Sub-regions determined by bits in Node Offset */
+#define LB_PROM_SPACE 0x0000000700000000ul /* Local LB PROM */
+
+/* Offset of PROM banner pointers in SAL A and SAL B */
+#define SAL_A_BANNER_OFFSET (1 * 16)
+#define SAL_B_BANNER_OFFSET (3 * 16)
+
+/* Architected IA64 firmware space */
+#define FW_BASE 0x00000000FF000000
+#define FW_TOP 0x0000000100000000
+
+static unsigned long
+convert_fw_addr(nasid_t nasid, unsigned long addr)
+{
+ /* snag just the node-relative offset */
+ addr &= ~0ul >> (63-35);
+ /* the pointer to SAL A is relative to IA-64 compatibility
+ * space. However, the PROM is mapped at a different offset
+ * in MMR space (both local and global)
+ */
+ addr += 0x700000000;
+ return GLOBAL_MMR_ADDR(nasid, addr);
+}
+
+static int
+valid_fw_addr(unsigned long addr)
+{
+ addr &= ~(1ul << 63); /* Clear cached/uncached bit */
+ return (addr >= FW_BASE && addr < FW_TOP);
+}
+
+static unsigned long *
+lookup_fit(int nasid)
+{
+ unsigned long *fitp;
+ unsigned long fit_paddr;
+ unsigned long *fit_vaddr;
+
+ fitp = (void *)GLOBAL_MMR_ADDR(nasid, LB_PROM_SPACE - 32);
+ fit_paddr = readq(fitp);
+ fit_vaddr = (unsigned long *) convert_fw_addr(nasid, fit_paddr);
+ return fit_vaddr;
+}
+#endif /* SUPPORT_OLD_PROMS */
+/* ============ END temp til old PROMs are no longer supported ============= */
+
+static int
+get_fit_entry(unsigned long nasid, int index, unsigned long *fentry,
+ char *banner, int banlen)
+{
+ int ret;
+
+ ret = ia64_sn_get_fit_compt(nasid, index, fentry, banner, banlen);
+
+#ifdef SUPPORT_OLD_PROMS
+ /* The following is hack is temporary until PROMs are updated */
+ if (ret == SALRET_NOT_IMPLEMENTED) {
+ unsigned long *fitadr = lookup_fit(nasid);
+ int nentries;
+
+ if (readq(fitadr) != FIT_SIGNATURE) {
+ printk(KERN_WARNING "Unrecognized FIT signature");
+ return -2;
+ }
+
+ nentries = (unsigned int) (readq(fitadr + 1) & 0xffffff);
+ if (index >= nentries)
+ return -2;
+
+ fentry[0] = readq(fitadr + 2 * index);
+ fentry[1] = readq(fitadr + 2 * index + 1);
+ ret = 0;
+
+ if (banner && FIT_TYPE(fentry[1]) == FIT_ENTRY_SAL_A) {
+ unsigned long i, qw, *bwp, *qwp;
+
+ banner[0] = '\0';
+ qw = fentry[0]; /* Address of SAL A */
+ if (!valid_fw_addr(qw))
+ return 0;
+
+ qw += SAL_A_BANNER_OFFSET;
+ qw = convert_fw_addr(nasid, qw);
+
+ qw = readq(qw); /* Address of banner */
+ if (!valid_fw_addr(qw))
+ return 0;
+ qw = convert_fw_addr(nasid, qw);
+ qwp = (unsigned long *) qw;
+ bwp = (unsigned long *) banner;
+ for (i=0; i<banlen/8; i++)
+ bwp[i] = qwp[i];
+ }
+ }
+#endif /* SUPPORT_OLD_PROMS */
+ return ret;
+}
+
+
+/*
+ * These two routines display the FIT table for each node.
*/
static int
dump_fit_entry(char *page, unsigned long *fentry)
{
- unsigned long q1, q2;
unsigned type;
- TRACE();
-
- q1 = readq(fentry);
- q2 = readq(fentry + 1);
- type = FIT_TYPE(q2);
+ type = FIT_TYPE(fentry[1]);
return sprintf(page, "%02x %-25s %x.%02x %016lx %u\n",
type,
fit_type_name(type),
- FIT_MAJOR(q2), FIT_MINOR(q2),
- q1,
+ FIT_MAJOR(fentry[1]), FIT_MINOR(fentry[1]),
+ fentry[0],
/* mult by sixteen to get size in bytes */
- (unsigned)q2 * 16);
+ (unsigned)(fentry[1] & 0xffffff) * 16);
}
-/* We assume that the fit table will be small enough that we can print
+
+/*
+ * We assume that the fit table will be small enough that we can print
* the whole thing into one page. (This is true for our default 16kB
* pages -- each entry is about 60 chars wide when printed.) I read
* somewhere that the maximum size of the FIT is 128 entries, so we're
* anyway).
*/
static int
-dump_fit(char *page, unsigned long *fit)
+dump_fit(char *page, unsigned long nasid)
{
- unsigned long qw;
- int nentries;
- int fentry;
+ unsigned long fentry[2];
+ int index;
char *p;
- TRACE();
-
- DPRINTK("dumping fit from %p\n", (void *)fit);
-
- qw = readq(fit);
- DPRINTK("FIT signature: %016lx (%.8s)\n", qw, (char *)&qw);
- if (qw != FIT_SIGNATURE)
- printk(KERN_WARNING "Unrecognized FIT signature");
-
- qw = readq(fit + 1);
- nentries = (unsigned)qw;
- DPRINTK("number of fit entries: %u\n", nentries);
- /* check that we won't overflow the page -- see comment above */
- BUG_ON(nentries * 60 > PAGE_SIZE);
-
p = page;
- for (fentry = 0; fentry < nentries; fentry++)
- /* each FIT entry is two 64 bit words */
- p += dump_fit_entry(p, fit + 2 * fentry);
+ for (index=0;;index++) {
+ BUG_ON(index * 60 > PAGE_SIZE);
+ if (get_fit_entry(nasid, index, fentry, NULL, 0))
+ break;
+ p += dump_fit_entry(p, fentry);
+ }
return p - page;
}
static int
-dump_version(char *page, unsigned long *fit)
+dump_version(char *page, unsigned long nasid)
{
- int nentries;
- int fentry;
- unsigned long qw;
+ unsigned long fentry[2];
+ char banner[128];
+ int index;
+ int len;
+
+ for (index = 0; ; index++) {
+ if (get_fit_entry(nasid, index, fentry, banner,
+ sizeof(banner)))
+ return 0;
+ if (FIT_TYPE(fentry[1]) == FIT_ENTRY_SAL_A)
+ break;
+ }
- TRACE();
+ len = sprintf(page, "%x.%02x\n", FIT_MAJOR(fentry[1]),
+ FIT_MINOR(fentry[1]));
+ page += len;
- nentries = (unsigned)readq(fit + 1);
- BUG_ON(nentries * 60 > PAGE_SIZE);
+ if (banner[0])
+ len += snprintf(page, PAGE_SIZE-len, "%s\n", banner);
- for (fentry = 0; fentry < nentries; fentry++) {
- qw = readq(fit + 2 * fentry + 1);
- if (FIT_TYPE(qw) == FIT_ENTRY_SAL_A)
- return sprintf(page, "%x.%02x\n",
- FIT_MAJOR(qw), FIT_MINOR(qw));
- }
- return 0;
+ return len;
}
/* same as in proc_misc.c */
{
int len = 0;
- /* data holds the pointer to this node's FIT */
- len = dump_version(page, (unsigned long *)data);
+ /* data holds the NASID of the node */
+ len = dump_version(page, (unsigned long)data);
len = proc_calc_metrics(page, start, off, count, eof, len);
return len;
}
{
int len = 0;
- /* data holds the pointer to this node's FIT */
- len = dump_fit(page, (unsigned long *)data);
+ /* data holds the NASID of the node */
+ len = dump_fit(page, (unsigned long)data);
len = proc_calc_metrics(page, start, off, count, eof, len);
return len;
}
-/* this is a fake FIT that's used on the medusa simulator which
- * doesn't usually run a complete PROM.
- */
-#ifdef CONFIG_IA64_SGI_SN_SIM
-static unsigned long fakefit[] = {
- /* this is all we need to satisfy the code below */
- FIT_SIGNATURE,
- FIT_ENTRY(FIT_ENTRY_FIT_HEADER, 0x02, 0x60, 2),
- /* dump something arbitrary for
- * /proc/sgi_prominfo/nodeX/version */
- 0xbadbeef00fa3ef17ul,
- FIT_ENTRY(FIT_ENTRY_SAL_A, 0, 0x99, 0x100)
-};
-#endif
-
-static unsigned long *
-lookup_fit(int nasid)
-{
- unsigned long *fitp;
- unsigned long fit_paddr;
- unsigned long *fit_vaddr;
-
-#ifdef CONFIG_IA64_SGI_SN_SIM
- if (IS_RUNNING_ON_SIMULATOR())
- return fakefit;
-#endif
-
- fitp = (void *)GLOBAL_MMR_ADDR(nasid, LB_PROM_SPACE - 32);
- DPRINTK("pointer to fit at %p\n", (void *)fitp);
- fit_paddr = readq(fitp);
- DPRINTK("fit pointer contains %lx\n", fit_paddr);
- /* snag just the node-relative offset */
- fit_paddr &= ~0ul >> (63-35);
- /* the pointer to the FIT is relative to IA-64 compatibility
- * space. However, the PROM is mapped at a different offset
- * in MMR space (both local and global)
- */
- fit_paddr += 0x700000000;
- fit_vaddr = (void *)GLOBAL_MMR_ADDR(nasid, fit_paddr);
- DPRINTK("fit at %p\n", (void *)fit_vaddr);
- return fit_vaddr;
-}
-
/* module entry points */
int __init prominfo_init(void);
void __exit prominfo_exit(void);
struct proc_dir_entry **entp;
struct proc_dir_entry *p;
cnodeid_t cnodeid;
- nasid_t nasid;
+ unsigned long nasid;
char name[NODE_NAME_LEN];
if (!ia64_platform_is("sn2"))
return 0;
- TRACE();
-
- DPRINTK("running on cpu %d\n", smp_processor_id());
- DPRINTK("numnodes %d\n", numnodes);
-
proc_entries = kmalloc(numnodes * sizeof(struct proc_dir_entry *),
GFP_KERNEL);
nasid = cnodeid_to_nasid(cnodeid);
p = create_proc_read_entry(
"fit", 0, *entp, read_fit_entry,
- lookup_fit(nasid));
+ (void *)nasid);
if (p)
p->owner = THIS_MODULE;
p = create_proc_read_entry(
"version", 0, *entp, read_version_entry,
- lookup_fit(nasid));
+ (void *)nasid);
if (p)
p->owner = THIS_MODULE;
}
unsigned cnodeid;
char name[NODE_NAME_LEN];
- TRACE();
-
for (cnodeid = 0, entp = proc_entries;
cnodeid < numnodes;
cnodeid++, entp++) {
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