Async write requests for bigger transfer sizes

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

3 files changed, 36 insertions, 1 deletions

diff --git a/src/download.c b/src/download.c
index b810a91..21df17d 100644
--- a/src/download.c
+++ b/src/download.c
@@ -195,6 +195,32 @@ int download_ready_read(struct context *context, off_t address, size_t length)
 	return 0;
 }
 
+int download_write_async(struct context *context, void *buffer, size_t length)
+{
+	struct download_write_async_request request;
+	struct download_response response;
+	int rc;
+
+	memset(&request, 0, sizeof(request));
+	request.command = DOWNLOAD_WRITE_ASYNC;
+	request.total_length = htole32(length);
+	request.length = htole32(length);
+
+	rc = hdlc_send(context, &request, sizeof(request));
+	if (rc < 0)
+		return -1;
+
+	rc = download_response(context);
+	if (rc < 0)
+		return -1;
+
+	rc = usb_send(context, buffer, length);
+	if (rc < 0)
+		return -1;
+
+	return 0;
+}
+
 int download_reset(struct context *context)
 {
 	int rc;
diff --git a/src/download.h b/src/download.h
index fc215a6..c1554cb 100644
--- a/src/download.h
+++ b/src/download.h
@@ -93,6 +93,14 @@ struct download_ready_read_request {
 	uint32_t length;
 } __attribute__((__packed__));
 
+struct download_write_async_request {
+	uint8_t command;
+	uint8_t binary_type;
+	uint16_t reserved;
+	uint32_t total_length;
+	uint32_t length;
+} __attribute__((__packed__));
+
 struct download_response {
 	uint8_t ack;
 } __attribute__((__packed__));
@@ -107,6 +115,7 @@ int download_erase(struct context *context, off_t address, size_t length);
 int download_read(struct context *context, void *buffer, size_t length);
 int download_initialize_partition(struct context *context, off_t address, size_t length);
 int download_ready_read(struct context *context, off_t address, size_t length);
+int download_write_async(struct context *context, void *buffer, size_t length);
 int download_reset(struct context *context);
 int download_notify_start_dl(struct context *context);
 
diff --git a/src/lg-downloader.c b/src/lg-downloader.c
index d9cfd3a..8e1e6a6 100644
--- a/src/lg-downloader.c
+++ b/src/lg-downloader.c
@@ -190,7 +190,7 @@ int flash(struct context *context)
 			p += rc;
 		}
 
-		rc = download_write(context, buffer, address, GPT_BLOCK_SIZE);
+		rc = download_write_async(context, buffer, GPT_BLOCK_SIZE);
 		if (rc < 0)
 			goto error;