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/* Copyright 2013-2014 IBM Corp.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
* implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <skiboot.h>
#include <chip.h>
#include <device.h>
static struct proc_chip *chips[MAX_CHIPS];
enum proc_chip_quirks proc_chip_quirks;
uint32_t pir_to_chip_id(uint32_t pir)
{
if (proc_gen == proc_gen_p8)
return P8_PIR2GCID(pir);
else
return P7_PIR2GCID(pir);
}
uint32_t pir_to_core_id(uint32_t pir)
{
if (proc_gen == proc_gen_p8)
return P8_PIR2COREID(pir);
else
return P7_PIR2COREID(pir);
}
uint32_t pir_to_thread_id(uint32_t pir)
{
if (proc_gen == proc_gen_p8)
return P8_PIR2THREADID(pir);
else
return P7_PIR2THREADID(pir);
}
struct proc_chip *next_chip(struct proc_chip *chip)
{
unsigned int i;
for (i = chip ? (chip->id + 1) : 0; i < MAX_CHIPS; i++)
if (chips[i])
return chips[i];
return NULL;
}
struct proc_chip *get_chip(uint32_t chip_id)
{
if (chip_id >= MAX_CHIPS)
return NULL;
return chips[chip_id];
}
void init_chips(void)
{
struct proc_chip *chip;
struct dt_node *xn;
/* Detect mambo chip */
if (dt_find_by_path(dt_root, "/mambo")) {
proc_chip_quirks |= QUIRK_NO_CHIPTOD | QUIRK_MAMBO_CALLOUTS
| QUIRK_NO_F000F | QUIRK_NO_PBA | QUIRK_NO_OCC_IRQ
| QUIRK_DISABLE_NAP;
prlog(PR_NOTICE, "CHIP: Detected Mambo simulator\n");
}
if (dt_node_is_compatible(dt_root, "qemu,powernv")) {
proc_chip_quirks |= QUIRK_NO_CHIPTOD | QUIRK_NO_PBA;
prlog(PR_NOTICE, "CHIP: Detected Qemu simulator\n");
}
/* We walk the chips based on xscom nodes in the tree */
dt_for_each_compatible(dt_root, xn, "ibm,xscom") {
uint32_t id = dt_get_chip_id(xn);
assert(id < MAX_CHIPS);
chip = zalloc(sizeof(struct proc_chip));
assert(chip);
chip->id = id;
chip->devnode = xn;
chips[id] = chip;
chip->dbob_id = dt_prop_get_u32_def(xn, "ibm,dbob-id",
0xffffffff);
chip->pcid = dt_prop_get_u32_def(xn, "ibm,proc-chip-id",
0xffffffff);
list_head_init(&chip->i2cms);
list_head_init(&chip->lpc_clients);
};
}
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