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drm/nouveau: implement init table opcode 0x5c 

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-03-21 21:31:21 +10:00
parent fb522ee1aa
commit ec64a40868
1 changed files with 24 additions and 3 deletions
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27
drivers/gpu/drm/nouveau/nouveau_bios.c
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@ -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
@ -2010,6 +2010,27 @@ init_sub_direct(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
return 3;
}
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.