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[POWERPC] Make lparcfg.c work when both iseries and pseries are selected
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This also consolidates the initial bits of lparcfg_data() and adds the
partition number to the iSeries flattened device tree.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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Stephen Rothwell authored and Paul Mackerras committed Jun 29, 2006
1 parent f86c974 commit 16e9f99
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Showing 2 changed files with 78 additions and 71 deletions.
147 changes: 76 additions & 71 deletions arch/powerpc/kernel/lparcfg.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -45,60 +45,41 @@
static struct proc_dir_entry *proc_ppc64_lparcfg;
#define LPARCFG_BUFF_SIZE 4096

#ifdef CONFIG_PPC_ISERIES

/*
* For iSeries legacy systems, the PPA purr function is available from the
* emulated_time_base field in the paca.
* Track sum of all purrs across all processors. This is used to further
* calculate usage values by different applications
*/
static unsigned long get_purr(void)
{
unsigned long sum_purr = 0;
int cpu;

for_each_possible_cpu(cpu) {
sum_purr += lppaca[cpu].emulated_time_base;
if (firmware_has_feature(FW_FEATURE_ISERIES))
sum_purr += lppaca[cpu].emulated_time_base;
else {
struct cpu_usage *cu;

#ifdef PURR_DEBUG
printk(KERN_INFO "get_purr for cpu (%d) has value (%ld) \n",
cpu, lppaca[cpu].emulated_time_base);
#endif
cu = &per_cpu(cpu_usage_array, cpu);
sum_purr += cu->current_tb;
}
}
return sum_purr;
}

#define lparcfg_write NULL
#ifdef CONFIG_PPC_ISERIES

/*
* Methods used to fetch LPAR data when running on an iSeries platform.
*/
static int lparcfg_data(struct seq_file *m, void *v)
static int iseries_lparcfg_data(struct seq_file *m, void *v)
{
unsigned long pool_id, lp_index;
unsigned long pool_id;
int shared, entitled_capacity, max_entitled_capacity;
int processors, max_processors;
unsigned long purr = get_purr();

seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);

shared = (int)(get_lppaca()->shared_proc);
seq_printf(m, "serial_number=%c%c%c%c%c%c%c\n",
e2a(xItExtVpdPanel.mfgID[2]),
e2a(xItExtVpdPanel.mfgID[3]),
e2a(xItExtVpdPanel.systemSerial[1]),
e2a(xItExtVpdPanel.systemSerial[2]),
e2a(xItExtVpdPanel.systemSerial[3]),
e2a(xItExtVpdPanel.systemSerial[4]),
e2a(xItExtVpdPanel.systemSerial[5]));

seq_printf(m, "system_type=%c%c%c%c\n",
e2a(xItExtVpdPanel.machineType[0]),
e2a(xItExtVpdPanel.machineType[1]),
e2a(xItExtVpdPanel.machineType[2]),
e2a(xItExtVpdPanel.machineType[3]));

lp_index = HvLpConfig_getLpIndex();
seq_printf(m, "partition_id=%d\n", (int)lp_index);

seq_printf(m, "system_active_processors=%d\n",
(int)HvLpConfig_getSystemPhysicalProcessors());
Expand Down Expand Up @@ -137,6 +118,14 @@ static int lparcfg_data(struct seq_file *m, void *v)

return 0;
}

#else /* CONFIG_PPC_ISERIES */

static int iseries_lparcfg_data(struct seq_file *m, void *v)
{
return 0;
}

#endif /* CONFIG_PPC_ISERIES */

#ifdef CONFIG_PPC_PSERIES
Expand Down Expand Up @@ -213,22 +202,6 @@ static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
log_plpar_hcall_return(rc, "H_PIC");
}

/* Track sum of all purrs across all processors. This is used to further */
/* calculate usage values by different applications */

static unsigned long get_purr(void)
{
unsigned long sum_purr = 0;
int cpu;
struct cpu_usage *cu;

for_each_possible_cpu(cpu) {
cu = &per_cpu(cpu_usage_array, cpu);
sum_purr += cu->current_tb;
}
return sum_purr;
}

#define SPLPAR_CHARACTERISTICS_TOKEN 20
#define SPLPAR_MAXLENGTH 1026*(sizeof(char))

Expand Down Expand Up @@ -333,35 +306,13 @@ static int lparcfg_count_active_processors(void)
return count;
}

static int lparcfg_data(struct seq_file *m, void *v)
static int pseries_lparcfg_data(struct seq_file *m, void *v)
{
int partition_potential_processors;
int partition_active_processors;
struct device_node *rootdn;
const char *model = "";
const char *system_id = "";
unsigned int *lp_index_ptr, lp_index = 0;
struct device_node *rtas_node;
int *lrdrp = NULL;

rootdn = find_path_device("/");
if (rootdn) {
model = get_property(rootdn, "model", NULL);
system_id = get_property(rootdn, "system-id", NULL);
lp_index_ptr = (unsigned int *)
get_property(rootdn, "ibm,partition-no", NULL);
if (lp_index_ptr)
lp_index = *lp_index_ptr;
}

seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);

seq_printf(m, "serial_number=%s\n", system_id);

seq_printf(m, "system_type=%s\n", model);

seq_printf(m, "partition_id=%d\n", (int)lp_index);

rtas_node = find_path_device("/rtas");
if (rtas_node)
lrdrp = (int *)get_property(rtas_node, "ibm,lrdr-capacity",
Expand Down Expand Up @@ -549,8 +500,61 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
return retval;
}

#else /* CONFIG_PPC_PSERIES */

static int pseries_lparcfg_data(struct seq_file *m, void *v)
{
return 0;
}

static ssize_t lparcfg_write(struct file *file, const char __user * buf,
size_t count, loff_t * off)
{
return count;
}

#endif /* CONFIG_PPC_PSERIES */

static int lparcfg_data(struct seq_file *m, void *v)
{
struct device_node *rootdn;
const char *model = "";
const char *system_id = "";
const char *tmp;
unsigned int *lp_index_ptr, lp_index = 0;

seq_printf(m, "%s %s \n", MODULE_NAME, MODULE_VERS);

rootdn = find_path_device("/");
if (rootdn) {
tmp = get_property(rootdn, "model", NULL);
if (tmp) {
model = tmp;
/* Skip "IBM," - see platforms/iseries/dt.c */
if (firmware_has_feature(FW_FEATURE_ISERIES))
model += 4;
}
tmp = get_property(rootdn, "system-id", NULL);
if (tmp) {
system_id = tmp;
/* Skip "IBM," - see platforms/iseries/dt.c */
if (firmware_has_feature(FW_FEATURE_ISERIES))
system_id += 4;
}
lp_index_ptr = (unsigned int *)
get_property(rootdn, "ibm,partition-no", NULL);
if (lp_index_ptr)
lp_index = *lp_index_ptr;
}
seq_printf(m, "serial_number=%s\n", system_id);
seq_printf(m, "system_type=%s\n", model);
seq_printf(m, "partition_id=%d\n", (int)lp_index);

if (firmware_has_feature(FW_FEATURE_ISERIES))
return iseries_lparcfg_data(m, v);
return pseries_lparcfg_data(m, v);
}

static int lparcfg_open(struct inode *inode, struct file *file)
{
return single_open(file, lparcfg_data, NULL);
Expand All @@ -569,7 +573,8 @@ int __init lparcfg_init(void)
mode_t mode = S_IRUSR | S_IRGRP | S_IROTH;

/* Allow writing if we have FW_FEATURE_SPLPAR */
if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
if (firmware_has_feature(FW_FEATURE_SPLPAR) &&
!firmware_has_feature(FW_FEATURE_ISERIES)) {
lparcfg_fops.write = lparcfg_write;
mode |= S_IWUSR;
}
Expand Down
2 changes: 2 additions & 0 deletions arch/powerpc/platforms/iseries/dt.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -252,6 +252,7 @@ static void __init dt_model(struct iseries_flat_dt *dt)
{
char buf[16] = "IBM,";

/* N.B. lparcfg.c knows about the "IBM," prefixes ... */
/* "IBM," + mfgId[2:3] + systemSerial[1:5] */
strne2a(buf + 4, xItExtVpdPanel.mfgID + 2, 2);
strne2a(buf + 6, xItExtVpdPanel.systemSerial + 1, 5);
Expand All @@ -264,6 +265,7 @@ static void __init dt_model(struct iseries_flat_dt *dt)
dt_prop_str(dt, "model", buf);

dt_prop_str(dt, "compatible", "IBM,iSeries");
dt_prop_u32(dt, "ibm,partition-no", HvLpConfig_getLpIndex());
}

static void __init dt_do_vdevice(struct iseries_flat_dt *dt,
Expand Down

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