73 lines
2.5 KiB
Diff
73 lines
2.5 KiB
Diff
From 2120b3b32d96d523b18c82beb99a2d1c6135eb49 Mon Sep 17 00:00:00 2001
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From: Ben Skeggs <bskeggs@redhat.com>
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Date: Mon, 21 Mar 2011 21:31:21 +1000
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Subject: [PATCH] drm/nouveau: implement init table opcode 0x5c
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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---
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drivers/gpu/drm/nouveau/nouveau_bios.c | 27 ++++++++++++++++++++++++---
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1 files changed, 24 insertions(+), 3 deletions(-)
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diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
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index 8314a49..eca191a 100644
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--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
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+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
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@@ -269,7 +269,7 @@ struct init_tbl_entry {
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int (*handler)(struct nvbios *, uint16_t, struct init_exec *);
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};
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-static int parse_init_table(struct nvbios *, unsigned int, struct init_exec *);
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+static int parse_init_table(struct nvbios *, uint16_t, struct init_exec *);
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#define MACRO_INDEX_SIZE 2
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#define MACRO_SIZE 8
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@@ -2011,6 +2011,27 @@ init_sub_direct(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
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}
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static int
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+init_jump(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
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+{
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+ /*
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+ * INIT_JUMP opcode: 0x5C ('\')
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+ *
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+ * offset (8 bit): opcode
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+ * offset + 1 (16 bit): offset (in bios)
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+ *
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+ * Continue execution of init table from 'offset'
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+ */
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+
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+ uint16_t jmp_offset = ROM16(bios->data[offset + 1]);
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+
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+ if (!iexec->execute)
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+ return 3;
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+
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+ BIOSLOG(bios, "0x%04X: Jump to 0x%04X\n", offset, jmp_offset);
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+ return jmp_offset - offset;
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+}
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+
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+static int
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init_i2c_if(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
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{
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/*
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@@ -3659,6 +3680,7 @@ static struct init_tbl_entry itbl_entry[] = {
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{ "INIT_ZM_REG_SEQUENCE" , 0x58, init_zm_reg_sequence },
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/* INIT_INDIRECT_REG (0x5A, 7, 0, 0) removed due to no example of use */
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{ "INIT_SUB_DIRECT" , 0x5B, init_sub_direct },
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+ { "INIT_JUMP" , 0x5C, init_jump },
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{ "INIT_I2C_IF" , 0x5E, init_i2c_if },
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{ "INIT_COPY_NV_REG" , 0x5F, init_copy_nv_reg },
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{ "INIT_ZM_INDEX_IO" , 0x62, init_zm_index_io },
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@@ -3700,8 +3722,7 @@ static struct init_tbl_entry itbl_entry[] = {
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#define MAX_TABLE_OPS 1000
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static int
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-parse_init_table(struct nvbios *bios, unsigned int offset,
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- struct init_exec *iexec)
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+parse_init_table(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
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{
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/*
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* Parses all commands in an init table.
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--
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1.7.4.1
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