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| author | Ben Skeggs <bskeggs@redhat.com> | 2011-03-21 21:31:21 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2011-04-05 11:07:13 +1000 |
| commit | ec64a40868469d308ad1e040c6ead2373af334dd (patch) | |
| tree | b947095cdf77810e75fe178780bc668b4050316d /drivers/gpu | |
| parent | fb522ee1aa57f2bb57ebd1111524601076d9ad0a (diff) | |
| download | linux-3.10-ec64a40868469d308ad1e040c6ead2373af334dd.tar.gz linux-3.10-ec64a40868469d308ad1e040c6ead2373af334dd.tar.bz2 linux-3.10-ec64a40868469d308ad1e040c6ead2373af334dd.zip | |
drm/nouveau: implement init table opcode 0x5c
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bios.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index 8314a49b6b9..eca191accb6 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -269,7 +269,7 @@ struct init_tbl_entry { int (*handler)(struct nvbios *, uint16_t, struct init_exec *); }; -static int parse_init_table(struct nvbios *, unsigned int, struct init_exec *); +static int parse_init_table(struct nvbios *, uint16_t, struct init_exec *); #define MACRO_INDEX_SIZE 2 #define MACRO_SIZE 8 @@ -2011,6 +2011,27 @@ init_sub_direct(struct nvbios *bios, uint16_t offset, struct init_exec *iexec) } static int +init_jump(struct nvbios *bios, uint16_t offset, struct init_exec *iexec) +{ + /* + * INIT_JUMP opcode: 0x5C ('\') + * + * offset (8 bit): opcode + * offset + 1 (16 bit): offset (in bios) + * + * Continue execution of init table from 'offset' + */ + + uint16_t jmp_offset = ROM16(bios->data[offset + 1]); + + if (!iexec->execute) + return 3; + + BIOSLOG(bios, "0x%04X: Jump to 0x%04X\n", offset, jmp_offset); + return jmp_offset - offset; +} + +static int init_i2c_if(struct nvbios *bios, uint16_t offset, struct init_exec *iexec) { /* @@ -3659,6 +3680,7 @@ static struct init_tbl_entry itbl_entry[] = { { "INIT_ZM_REG_SEQUENCE" , 0x58, init_zm_reg_sequence }, /* INIT_INDIRECT_REG (0x5A, 7, 0, 0) removed due to no example of use */ { "INIT_SUB_DIRECT" , 0x5B, init_sub_direct }, + { "INIT_JUMP" , 0x5C, init_jump }, { "INIT_I2C_IF" , 0x5E, init_i2c_if }, { "INIT_COPY_NV_REG" , 0x5F, init_copy_nv_reg }, { "INIT_ZM_INDEX_IO" , 0x62, init_zm_index_io }, @@ -3700,8 +3722,7 @@ static struct init_tbl_entry itbl_entry[] = { #define MAX_TABLE_OPS 1000 static int -parse_init_table(struct nvbios *bios, unsigned int offset, - struct init_exec *iexec) +parse_init_table(struct nvbios *bios, uint16_t offset, struct init_exec *iexec) { /* * Parses all commands in an init table. |