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sandbox: scsi: Move reply setup out of helper

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Move this code out of the helper function so we can (later) add it as part
of the shared emulation code. Set a default value of 0 for buff_used since
that is what we use when there is an error.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2022-09-21 16:21:41 +02:00
parent f148ad1b5f
commit f75b6f76a4
1 changed files with 9 additions and 13 deletions
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22
drivers/usb/emul/sandbox_flash.c
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@ -181,14 +181,12 @@ static int sandbox_flash_control(struct udevice *dev, struct usb_device *udev,
static void setup_fail_response(struct sandbox_flash_priv *priv)
{
struct scsi_emul_info *info = &priv->eminfo;
struct umass_bbb_csw *csw = &priv->status;
csw->dCSWSignature = CSWSIGNATURE;
csw->dCSWTag = priv->tag;
csw->dCSWDataResidue = 0;
csw->bCSWStatus = CSWSTATUS_FAILED;
info->buff_used = 0;
}
/**
@ -198,19 +196,14 @@ static void setup_fail_response(struct sandbox_flash_priv *priv)
* @resp: Response to send, or NULL if none
* @size: Size of response
*/
static void setup_response(struct sandbox_flash_priv *priv, void *resp,
int size)
static void setup_response(struct sandbox_flash_priv *priv)
{
struct scsi_emul_info *info = &priv->eminfo;
struct umass_bbb_csw *csw = &priv->status;
csw->dCSWSignature = CSWSIGNATURE;
csw->dCSWTag = priv->tag;
csw->dCSWDataResidue = 0;
csw->bCSWStatus = CSWSTATUS_GOOD;
assert(!resp || resp == info->buff);
info->buff_used = size;
}
static void handle_read(struct sandbox_flash_priv *priv, ulong lba,
@ -222,8 +215,8 @@ static void handle_read(struct sandbox_flash_priv *priv, ulong lba,
info->read_len = transfer_len;
if (priv->fd != -1) {
os_lseek(priv->fd, lba * info->block_size, OS_SEEK_SET);
setup_response(priv, info->buff,
transfer_len * info->block_size);
info->buff_used = transfer_len * info->block_size;
setup_response(priv);
} else {
setup_fail_response(priv);
}
@ -236,6 +229,7 @@ static int handle_ufi_command(struct sandbox_flash_plat *plat,
struct scsi_emul_info *info = &priv->eminfo;
const struct scsi_cmd *req = buff;
info->buff_used = 0;
switch (*req->cmd) {
case SCSI_INQUIRY: {
struct scsi_inquiry_resp *resp = (void *)info->buff;
@ -247,11 +241,12 @@ static int handle_ufi_command(struct sandbox_flash_plat *plat,
strncpy(resp->vendor, info->vendor, sizeof(resp->vendor));
strncpy(resp->product, info->product, sizeof(resp->product));
strncpy(resp->revision, "1.0", sizeof(resp->revision));
setup_response(priv, resp, sizeof(*resp));
info->buff_used = sizeof(*resp);
setup_response(priv);
break;
}
case SCSI_TST_U_RDY:
setup_response(priv, NULL, 0);
setup_response(priv);
break;
case SCSI_RD_CAPAC: {
struct scsi_read_capacity_resp *resp = (void *)info->buff;
@ -263,7 +258,8 @@ static int handle_ufi_command(struct sandbox_flash_plat *plat,
blocks = 0;
resp->last_block_addr = cpu_to_be32(blocks);
resp->block_len = cpu_to_be32(info->block_size);
setup_response(priv, resp, sizeof(*resp));
info->buff_used = sizeof(*resp);
setup_response(priv);
break;
}
case SCSI_READ10: {