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pmgr: Fix struct for older SoCs

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At some point Apple ran out of bits and have to widen the device field
to 16-bit. This adds support for the old 8-bit layout.

Signed-off-by: Nick Chan <towinchenmi@gmail.com>
This commit is contained in:
Nick Chan 2024-10-12 20:51:01 +08:00 committed by Hector Martin
parent 9ca6d1c16f
commit fb59dc03ca
1 changed files with 50 additions and 13 deletions
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63
src/pmgr.c
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@ -21,14 +21,24 @@
#define PMGR_FLAG_VIRTUAL 0x10
struct pmgr_device {
u32 flags;
u16 parent[2];
u8 unk1[2];
u8 flags;
u16 unk1;
u8 id1;
union {
struct {
u8 parent[2];
u8 unk2[2];
} u8id;
struct {
u16 parent[2];
} u16id;
};
u8 unk3[2];
u8 addr_offset;
u8 psreg_idx;
u8 unk2[14];
u16 id;
u8 unk3[4];
u8 unk4[14];
u16 id2;
u8 unk5[4];
const char name[0x10];
} PACKED;
@ -44,6 +54,8 @@ static u32 pmgr_ps_regs_len = 0;
static const struct pmgr_device *pmgr_devices = NULL;
static u32 pmgr_devices_len = 0;
static bool pmgr_u8id = false;
static uintptr_t pmgr_get_psreg(u8 idx)
{
if (idx * 12 >= pmgr_ps_regs_len) {
@ -76,11 +88,19 @@ int pmgr_set_mode(uintptr_t addr, u8 target_mode)
return 0;
}
static u16 pmgr_adt_get_id(const struct pmgr_device *device)
{
if (pmgr_u8id)
return device->id1;
else
return device->id2;
}
static int pmgr_find_device(u16 id, const struct pmgr_device **device)
{
for (size_t i = 0; i < pmgr_devices_len; ++i) {
const struct pmgr_device *i_device = &pmgr_devices[i];
if (i_device->id != id)
if (pmgr_adt_get_id(i_device) != id)
continue;
*device = i_device;
@ -102,6 +122,17 @@ static uintptr_t pmgr_device_get_addr(u8 die, const struct pmgr_device *device)
return addr;
}
static void pmgr_adt_get_parents(const struct pmgr_device *device, u16 parent[2])
{
if (pmgr_u8id) {
parent[0] = device->u8id.parent[0];
parent[1] = device->u8id.parent[1];
} else {
parent[0] = device->u16id.parent[0];
parent[1] = device->u16id.parent[1];
}
}
static int pmgr_set_mode_recursive(u8 die, u16 id, u8 target_mode, bool recurse)
{
if (!pmgr_initialized) {
@ -127,9 +158,10 @@ static int pmgr_set_mode_recursive(u8 die, u16 id, u8 target_mode, bool recurse)
if (recurse)
for (int i = 0; i < 2; i++) {
if (device->parent[i]) {
u16 parent = FIELD_GET(PMGR_DEVICE_ID, device->parent[i]);
int ret = pmgr_set_mode_recursive(die, parent, target_mode, true);
u16 parents[2];
pmgr_adt_get_parents(device, parents);
if (parents[i]) {
int ret = pmgr_set_mode_recursive(die, parents[i], target_mode, true);
if (ret < 0)
return ret;
}
@ -346,6 +378,9 @@ int pmgr_init(void)
for (size_t i = 0; i < pmgr_devices_len; ++i) {
const struct pmgr_device *device = &pmgr_devices[i];
if (device->id1)
pmgr_u8id = true;
if ((device->flags & PMGR_FLAG_VIRTUAL))
continue;
@ -357,10 +392,12 @@ int pmgr_init(void)
if (reg & PMGR_AUTO_ENABLE || FIELD_GET(PMGR_PS_TARGET, reg) == PMGR_PS_ACTIVE) {
for (int j = 0; j < 2; j++) {
if (device->parent[j]) {
u16 parent[2];
pmgr_adt_get_parents(device, parent);
if (parent[j]) {
const struct pmgr_device *pdevice;
if (pmgr_find_device(device->parent[j], &pdevice)) {
printf("pmgr: Failed to find parent #%d for %s\n", device->parent[j],
if (pmgr_find_device(parent[j], &pdevice)) {
printf("pmgr: Failed to find parent #%d for %s\n", parent[j],
device->name);
continue;
}