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AMD northbridges: rewrite CPU allocation 

Use of alloc_find_dev() prevents creation of a device duplicates
for device_path and is SMP safe.

Reduce scope of variables to make the code more readable and in
preparation for refactoring the allocation out of northbridge.c.

Change-Id: I153dc1a5cab4f2eae4ab3a57af02841cb1a261c0
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/1186
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
This commit is contained in:
Kyösti Mälkki 2012-07-06 19:02:56 +03:00 committed by Alexandru Gagniuc
parent 8c02790882
commit cd9fc1aa5f
6 changed files with 102 additions and 154 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
src/northbridge/amd/agesa/family10/northbridge.c
View File

@ -1311,8 +1311,7 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
/* Find which cpus are present */
cpu_bus = dev->link_list;
for (i = 0; i < nodes; i++) {
device_t cdb_dev, cpu;
struct device_path cpu_path;
device_t cdb_dev;
unsigned busn, devn;
struct bus *pbus;
@ -1355,7 +1354,8 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
cores_found = 0; // one core
cdb_dev = dev_find_slot(busn, PCI_DEVFN(devn, 3));
if (cdb_dev && cdb_dev->enabled) {
int enable_node = cdb_dev && cdb_dev->enabled;
if (enable_node) {
j = pci_read_config32(cdb_dev, 0xe8);
cores_found = (j >> 12) & 3; // dev is func 3
if (siblings > 3)
@ -1374,6 +1374,8 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
extern CONST OPTIONS_CONFIG_TOPOLOGY ROMDATA TopologyConfiguration;
u32 modules = TopologyConfiguration.PlatformNumberOfModules;
u32 lapicid_start = 0;
struct device_path cpu_path;
device_t cpu;
/* Build the cpu device path */
cpu_path.type = DEVICE_PATH_APIC;
@ -1394,31 +1396,19 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
}
cpu_path.apic.apic_id = (lapicid_start * (i/modules + 1)) + ((i % modules) ? (j + (cores_found + 1)) : j);
/* See if I can find the cpu */
/* Update CPU in devicetree. */
if (enable_node)
cpu = alloc_find_dev(cpu_bus, &cpu_path);
else
cpu = find_dev_path(cpu_bus, &cpu_path);
if (!cpu)
continue;
/* Enable the cpu if I have the processor */
if (cdb_dev && cdb_dev->enabled) {
if (!cpu) {
cpu = alloc_dev(cpu_bus, &cpu_path);
}
if (cpu) {
cpu->enabled = 1;
}
}
/* Disable the cpu if I don't have the processor */
if (cpu && (!cdb_dev || !cdb_dev->enabled)) {
cpu->enabled = 0;
}
/* Report what I have done */
if (cpu) {
cpu->enabled = enable_node;
cpu->path.apic.node_id = i;
cpu->path.apic.core_id = j;
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
}
} //j
}

9
src/northbridge/amd/agesa/family14/northbridge.c
View File

@ -832,7 +832,6 @@ static void cpu_bus_set_resources(device_t dev) {
static u32 cpu_bus_scan(device_t dev, u32 max)
{
device_t cpu;
struct device_path cpu_path;
int apic_id, cores_found;
/* There is only one node for fam14, but there may be multiple cores. */
@ -845,18 +844,18 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
for (apic_id = 0; apic_id <= cores_found; apic_id++) {
struct device_path cpu_path;
cpu_path.type = DEVICE_PATH_APIC;
cpu_path.apic.apic_id = apic_id;
cpu = alloc_find_dev(dev->link_list, &cpu_path);
if (cpu) {
if (!cpu)
continue;
cpu->enabled = 1;
cpu->path.apic.node_id = 0;
cpu->path.apic.core_id = apic_id;
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
} else {
cpu->enabled = 0;
}
}
return max;
}

31
src/northbridge/amd/agesa/family15/northbridge.c
View File

@ -988,8 +988,7 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
/* Find which cpus are present */
cpu_bus = dev->link_list;
for (i = 0; i < node_nums; i++) {
device_t cdb_dev, cpu;
struct device_path cpu_path;
device_t cdb_dev;
unsigned busn, devn;
struct bus *pbus;
@ -1045,6 +1044,7 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
} else {
siblings = 0; //default one core
}
int enable_node = cdb_dev && cdb_dev->enabled;
printk(BIOS_SPEW, "%s family%xh, core_max=0x%x, core_nums=0x%x, siblings=0x%x\n",
dev_path(cdb_dev), 0x0f + family, core_max, core_nums, siblings);
@ -1052,6 +1052,8 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
extern CONST OPTIONS_CONFIG_TOPOLOGY ROMDATA TopologyConfiguration;
u32 modules = TopologyConfiguration.PlatformNumberOfModules;
u32 lapicid_start = 0;
struct device_path cpu_path;
device_t cpu;
/* Build the cpu device path */
cpu_path.type = DEVICE_PATH_APIC;
@ -1080,28 +1082,19 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
printk(BIOS_SPEW, "node 0x%x core 0x%x apicid=0x%x\n",
i, j, cpu_path.apic.apic_id);
/* See if I can find the cpu */
/* Update CPU in devicetree. */
if (enable_node)
cpu = alloc_find_dev(cpu_bus, &cpu_path);
else
cpu = find_dev_path(cpu_bus, &cpu_path);
/* Enable the cpu if I have the processor */
if (cdb_dev && cdb_dev->enabled) {
if (!cpu) {
cpu = alloc_dev(cpu_bus, &cpu_path);
}
if (cpu) {
cpu->enabled = 1;
}
}
/* Disable the cpu if I don't have the processor */
if (cpu && (!cdb_dev || !cdb_dev->enabled)) {
cpu->enabled = 0;
}
/* Report what I have done */
if (cpu) {
if (!cpu)
continue;
cpu->enabled = enable_node;
cpu->path.apic.node_id = i;
cpu->path.apic.core_id = j;
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
}
} //j
}
return max;

31
src/northbridge/amd/agesa/family15tn/northbridge.c
View File

@ -996,8 +996,7 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
/* Find which cpus are present */
cpu_bus = dev->link_list;
for (i = 0; i < node_nums; i++) {
device_t cdb_dev, cpu;
struct device_path cpu_path;
device_t cdb_dev;
unsigned busn, devn;
struct bus *pbus;
@ -1053,6 +1052,7 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
} else {
siblings = 0; //default one core
}
int enable_node = cdb_dev && cdb_dev->enabled;
printk(BIOS_SPEW, "%s family%xh, core_max=0x%x, core_nums=0x%x, siblings=0x%x\n",
dev_path(cdb_dev), 0x0f + family, core_max, core_nums, siblings);
@ -1060,6 +1060,8 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
extern CONST OPTIONS_CONFIG_TOPOLOGY ROMDATA TopologyConfiguration;
u32 modules = TopologyConfiguration.PlatformNumberOfModules;
u32 lapicid_start = 0;
struct device_path cpu_path;
device_t cpu;
/* Build the cpu device path */
cpu_path.type = DEVICE_PATH_APIC;
@ -1088,28 +1090,19 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
printk(BIOS_SPEW, "node 0x%x core 0x%x apicid=0x%x\n",
i, j, cpu_path.apic.apic_id);
/* See if I can find the cpu */
/* Update CPU in devicetree. */
if (enable_node)
cpu = alloc_find_dev(cpu_bus, &cpu_path);
else
cpu = find_dev_path(cpu_bus, &cpu_path);
/* Enable the cpu if I have the processor */
if (cdb_dev && cdb_dev->enabled) {
if (!cpu) {
cpu = alloc_dev(cpu_bus, &cpu_path);
}
if (cpu) {
cpu->enabled = 1;
}
}
/* Disable the cpu if I don't have the processor */
if (cpu && (!cdb_dev || !cdb_dev->enabled)) {
cpu->enabled = 0;
}
/* Report what I have done */
if (cpu) {
if (!cpu)
continue;
cpu->enabled = enable_node;
cpu->path.apic.node_id = i;
cpu->path.apic.core_id = j;
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
}
} //j
}
return max;

44
src/northbridge/amd/amdfam10/northbridge.c
View File

@ -1345,8 +1345,7 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
/* Find which cpus are present */
cpu_bus = dev->link_list;
for(i = 0; i < nodes; i++) {
device_t cdb_dev, cpu;
struct device_path cpu_path;
device_t cdb_dev;
unsigned busn, devn;
struct bus *pbus;
@ -1389,7 +1388,8 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
cores_found = 0; // one core
cdb_dev = dev_find_slot(busn, PCI_DEVFN(devn, 3));
if (cdb_dev && cdb_dev->enabled) {
int enable_node = cdb_dev && cdb_dev->enabled;
if (enable_node) {
j = pci_read_config32(cdb_dev, 0xe8);
cores_found = (j >> 12) & 3; // dev is func 3
if (siblings > 3)
@ -1406,47 +1406,33 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
}
for (j = 0; j <=jj; j++ ) {
struct device_path cpu_path;
device_t cpu;
/* Build the cpu device path */
cpu_path.type = DEVICE_PATH_APIC;
cpu_path.apic.apic_id = i * (nb_cfg_54?(siblings+1):1) + j * (nb_cfg_54?1:64); // ?
/* See if I can find the cpu */
/* Update CPU in devicetree. */
if (enable_node)
cpu = alloc_find_dev(cpu_bus, &cpu_path);
else
cpu = find_dev_path(cpu_bus, &cpu_path);
if (!cpu)
continue;
/* Enable the cpu if I have the processor */
if (cdb_dev && cdb_dev->enabled) {
if (!cpu) {
cpu = alloc_dev(cpu_bus, &cpu_path);
}
if (cpu) {
cpu->enabled = 1;
}
}
/* Disable the cpu if I don't have the processor */
if (cpu && (!cdb_dev || !cdb_dev->enabled)) {
cpu->enabled = 0;
}
/* Report what I have done */
if (cpu) {
cpu->path.apic.node_id = i;
cpu->path.apic.core_id = j;
#if CONFIG_ENABLE_APIC_EXT_ID && (CONFIG_APIC_ID_OFFSET>0)
if(sysconf.enabled_apic_ext_id) {
if(sysconf.lift_bsp_apicid) {
cpu->path.apic.apic_id += sysconf.apicid_offset;
} else
{
if (cpu->path.apic.apic_id != 0)
if (cpu->path.apic.apic_id != 0 || sysconf.lift_bsp_apicid) {
cpu->path.apic.apic_id += sysconf.apicid_offset;
}
}
#endif
cpu->enabled = enable_node;
cpu->path.apic.node_id = i;
cpu->path.apic.core_id = j;
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
}
} //j
}

43
src/northbridge/amd/amdk8/northbridge.c
View File

@ -1239,8 +1239,7 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
/* Find which cpus are present */
cpu_bus = dev->link_list;
for(i = 0; i < sysconf.nodes; i++) {
device_t cpu_dev, cpu;
struct device_path cpu_path;
device_t cpu_dev;
/* Find the cpu's pci device */
cpu_dev = dev_find_slot(0, PCI_DEVFN(0x18 + i, 3));
@ -1264,7 +1263,8 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
}
e0_later_single_core = 0;
if (cpu_dev && cpu_dev->enabled) {
int enable_node = cpu_dev && cpu_dev->enabled;
if (enable_node) {
j = pci_read_config32(cpu_dev, 0xe8);
j = (j >> 12) & 3; // dev is func 3
printk(BIOS_DEBUG, " %s siblings=%d\n", dev_path(cpu_dev), j);
@ -1311,45 +1311,32 @@ static u32 cpu_bus_scan(device_t dev, u32 max)
#endif
for (j = 0; j <=jj; j++ ) {
struct device_path cpu_path;
device_t cpu;
/* Build the cpu device path */
cpu_path.type = DEVICE_PATH_APIC;
cpu_path.apic.apic_id = i * (nb_cfg_54?(siblings+1):1) + j * (nb_cfg_54?1:8);
/* See if I can find the cpu */
/* Update CPU in devicetree. */
if (enable_node)
cpu = alloc_find_dev(cpu_bus, &cpu_path);
else
cpu = find_dev_path(cpu_bus, &cpu_path);
if (!cpu)
continue;
/* Enable the cpu if I have the processor */
if (cpu_dev && cpu_dev->enabled) {
if (!cpu) {
cpu = alloc_dev(cpu_bus, &cpu_path);
}
if (cpu) {
cpu->enabled = 1;
if(sysconf.enabled_apic_ext_id) {
if (cpu->path.apic.apic_id != 0 || sysconf.lift_bsp_apicid) {
cpu->path.apic.apic_id += sysconf.apicid_offset;
}
}
/* Disable the cpu if I don't have the processor */
if (cpu && (!cpu_dev || !cpu_dev->enabled)) {
cpu->enabled = 0;
}
/* Report what I have done */
if (cpu) {
cpu->enabled = enable_node;
cpu->path.apic.node_id = i;
cpu->path.apic.core_id = j;
if(sysconf.enabled_apic_ext_id) {
if(sysconf.lift_bsp_apicid) {
cpu->path.apic.apic_id += sysconf.apicid_offset;
} else
{
if (cpu->path.apic.apic_id != 0)
cpu->path.apic.apic_id += sysconf.apicid_offset;
}
}
printk(BIOS_DEBUG, "CPU: %s %s\n",
dev_path(cpu), cpu->enabled?"enabled":"disabled");
}
} //j
}