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atapi: GESN: Standardise event response handling for future additions

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Handle GET_EVENT_STATUS_NOTIFICATION's No Event Available response in a
generic way so that future additions to the code to handle other
response types is easier.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Acked-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Amit Shah 2011-04-12 21:36:06 +05:30 committed by Kevin Wolf
parent 8f8e834d70
commit 0af63ba362
1 changed files with 19 additions and 6 deletions
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25
hw/ide/core.c
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@ -1098,9 +1098,17 @@ static void handle_get_event_status_notification(IDEState *s,
uint8_t control;
} __attribute__((packed)) *gesn_cdb;
unsigned int max_len;
struct {
uint16_t len;
uint8_t notification_class;
uint8_t supported_events;
} __attribute((packed)) *gesn_event_header;
unsigned int max_len, used_len;
gesn_cdb = (void *)packet;
gesn_event_header = (void *)buf;
max_len = be16_to_cpu(gesn_cdb->len);
/* It is fine by the MMC spec to not support async mode operations */
@ -1111,12 +1119,17 @@ static void handle_get_event_status_notification(IDEState *s,
return;
}
/* polling */
/* polling mode operation */
/* We don't support any event class (yet). */
cpu_to_ube16(buf, 0x00); /* No event descriptor returned */
buf[2] = 0x80; /* No Event Available (NEA) */
buf[3] = 0x00; /* Empty supported event classes */
ide_atapi_cmd_reply(s, 4, max_len);
gesn_event_header->supported_events = 0;
gesn_event_header->notification_class = 0x80; /* No event available */
used_len = sizeof(*gesn_event_header);
gesn_event_header->len = cpu_to_be16(used_len
- sizeof(*gesn_event_header));
ide_atapi_cmd_reply(s, used_len, max_len);
}
static void ide_atapi_cmd(IDEState *s)