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Subject[PATCH 3/9] media: mtk-vcodec: support version 2 of decoder firmware ABI
Date
Add support for decoder firmware version 2, which makes the kernel
responsible for managing the VSI context and is used for stateless
codecs.

Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
---
.../media/platform/mtk-vcodec/vdec_ipi_msg.h | 18 +++++++++---
.../media/platform/mtk-vcodec/vdec_vpu_if.c | 28 +++++++++++++++----
.../media/platform/mtk-vcodec/vdec_vpu_if.h | 5 ++++
3 files changed, 42 insertions(+), 9 deletions(-)

diff --git a/drivers/media/platform/mtk-vcodec/vdec_ipi_msg.h b/drivers/media/platform/mtk-vcodec/vdec_ipi_msg.h
index eb66729fda63..a0e773ae3ab3 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_ipi_msg.h
+++ b/drivers/media/platform/mtk-vcodec/vdec_ipi_msg.h
@@ -29,11 +29,15 @@ enum vdec_ipi_msgid {
/**
* struct vdec_ap_ipi_cmd - generic AP to VPU ipi command format
* @msg_id : vdec_ipi_msgid
- * @vpu_inst_addr : VPU decoder instance address
+ * @vpu_inst_addr : VPU decoder instance address. Used if ABI version < 2.
+ * @inst_id : instance ID. Used if the ABI version >= 2.
*/
struct vdec_ap_ipi_cmd {
uint32_t msg_id;
- uint32_t vpu_inst_addr;
+ union {
+ uint32_t vpu_inst_addr;
+ uint32_t inst_id;
+ };
};

/**
@@ -63,7 +67,8 @@ struct vdec_ap_ipi_init {
/**
* struct vdec_ap_ipi_dec_start - for AP_IPIMSG_DEC_START
* @msg_id : AP_IPIMSG_DEC_START
- * @vpu_inst_addr : VPU decoder instance address
+ * @vpu_inst_addr : VPU decoder instance address. Used if ABI version < 2.
+ * @inst_id : instance ID. Used if the ABI version >= 2.
* @data : Header info
* H264 decoder [0]:buf_sz [1]:nal_start
* VP8 decoder [0]:width/height
@@ -72,7 +77,10 @@ struct vdec_ap_ipi_init {
*/
struct vdec_ap_ipi_dec_start {
uint32_t msg_id;
- uint32_t vpu_inst_addr;
+ union {
+ uint32_t vpu_inst_addr;
+ uint32_t inst_id;
+ };
uint32_t data[3];
uint32_t reserved;
};
@@ -87,6 +95,7 @@ struct vdec_ap_ipi_dec_start {
* ensure that it is compatible with the firmware.
* This field is not valid for MT8173 and must not be
* accessed for this chip.
+ * @inst_id : instance ID. Valid only if the ABI version >= 2.
*/
struct vdec_vpu_ipi_init_ack {
uint32_t msg_id;
@@ -94,6 +103,7 @@ struct vdec_vpu_ipi_init_ack {
uint64_t ap_inst_addr;
uint32_t vpu_inst_addr;
uint32_t vdec_abi_version;
+ uint32_t inst_id;
};

#endif
diff --git a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c
index 203089213e67..5dffc459a33d 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c
@@ -25,18 +25,30 @@ static void handle_init_ack_msg(const struct vdec_vpu_ipi_init_ack *msg)

mtk_vcodec_debug(vpu, "- vpu_inst_addr = 0x%x", vpu->inst_addr);

+ /* Set default ABI version if dealing with unversioned firmware. */
+ vpu->fw_abi_version = 0;
+ /*
+ * Instance ID is only used if ABI version >= 2. Initialize it with
+ * garbage by default.
+ */
+ vpu->inst_id = 0xdeadbeef;
+
/* Firmware version field does not exist on MT8173. */
if (vpu->ctx->dev->vdec_pdata->chip == MTK_MT8173)
return;

/* Check firmware version. */
- mtk_vcodec_debug(vpu, "firmware version 0x%x\n", msg->vdec_abi_version);
- switch (msg->vdec_abi_version) {
+ vpu->fw_abi_version = msg->vdec_abi_version;
+ mtk_vcodec_debug(vpu, "firmware version 0x%x\n", vpu->fw_abi_version);
+ switch (vpu->fw_abi_version) {
case 1:
break;
+ case 2:
+ vpu->inst_id = msg->inst_id;
+ break;
default:
mtk_vcodec_err(vpu, "unhandled firmware version 0x%x\n",
- msg->vdec_abi_version);
+ vpu->fw_abi_version);
vpu->failure = 1;
break;
}
@@ -113,7 +125,10 @@ static int vcodec_send_ap_ipi(struct vdec_vpu_inst *vpu, unsigned int msg_id)

memset(&msg, 0, sizeof(msg));
msg.msg_id = msg_id;
- msg.vpu_inst_addr = vpu->inst_addr;
+ if (vpu->fw_abi_version < 2)
+ msg.vpu_inst_addr = vpu->inst_addr;
+ else
+ msg.inst_id = vpu->inst_id;

err = vcodec_vpu_send_msg(vpu, &msg, sizeof(msg));
mtk_vcodec_debug(vpu, "- id=%X ret=%d", msg_id, err);
@@ -163,7 +178,10 @@ int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len)

memset(&msg, 0, sizeof(msg));
msg.msg_id = AP_IPIMSG_DEC_START;
- msg.vpu_inst_addr = vpu->inst_addr;
+ if (vpu->fw_abi_version < 2)
+ msg.vpu_inst_addr = vpu->inst_addr;
+ else
+ msg.inst_id = vpu->inst_id;

for (i = 0; i < len; i++)
msg.data[i] = data[i];
diff --git a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h
index 85224eb7e34b..c2ed5b6cab8b 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h
+++ b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h
@@ -18,6 +18,9 @@ struct mtk_vcodec_ctx;
* for control and info share
* @failure : VPU execution result status, 0: success, others: fail
* @inst_addr : VPU decoder instance address
+ * @fw_abi_version : ABI version of the firmware.
+ * @inst_id : if fw_abi_version >= 2, contains the instance ID to be given
+ * in place of inst_addr in messages.
* @signaled : 1 - Host has received ack message from VPU, 0 - not received
* @ctx : context for v4l2 layer integration
* @dev : platform device of VPU
@@ -29,6 +32,8 @@ struct vdec_vpu_inst {
void *vsi;
int32_t failure;
uint32_t inst_addr;
+ uint32_t fw_abi_version;
+ uint32_t inst_id;
unsigned int signaled;
struct mtk_vcodec_ctx *ctx;
wait_queue_head_t wq;
--
2.27.0.212.ge8ba1cc988-goog
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