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[Qemu-devel] [PATCH v3 3/5] atapi: GESN: Use structs for commonly-used f
From: |
Amit Shah |
Subject: |
[Qemu-devel] [PATCH v3 3/5] atapi: GESN: Use structs for commonly-used field types |
Date: |
Tue, 12 Apr 2011 17:13:22 +0530 |
Instead of using magic numbers, use structs that are more descriptive of
the fields being used.
Signed-off-by: Amit Shah <address@hidden>
---
hw/ide/core.c | 22 +++++++++++++++++-----
1 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/hw/ide/core.c b/hw/ide/core.c
index 5b64676..e838990 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1088,11 +1088,23 @@ static void
handle_get_event_status_notification(IDEState *s,
uint8_t *buf,
const uint8_t *packet)
{
- unsigned int max_len;
-
- max_len = ube16_to_cpu(packet + 7);
-
- if (!(packet[1] & 0x01)) { /* asynchronous mode */
+ struct {
+ uint8_t opcode;
+ uint8_t polled; /* lsb bit is polled; others are reserved */
+ uint8_t reserved2[2];
+ uint8_t class;
+ uint8_t reserved3[2];
+ uint16_t len;
+ uint8_t control;
+ } __attribute__((packed)) *gesn_cdb;
+
+ unsigned int max_len, used_len;
+
+ gesn_cdb = (void *)packet;
+ max_len = be16_to_cpu(gesn_cdb->len);
+
+ /* It is fine by the MMC spec to not support async mode operations */
+ if (!(gesn_cdb->polled & 0x01)) { /* asynchronous mode */
/* Only polling is supported, asynchronous mode is not. */
ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,
ASC_INV_FIELD_IN_CMD_PACKET);
--
1.7.4.2
[Qemu-devel] [PATCH v3 5/5] atapi: GESN: implement 'media' subcommand, Amit Shah, 2011/04/12