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ahci: EM message type auto detect

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Detect enclosure management message type automatically at driver
initialization, instead of using module parameter "ahci_em_messages".

Signed-off-by: Harry Zhang <harry.zhang@amd.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Harry Zhang
2010-04-23 17:27:19 +08:00
committed by Jeff Garzik
parent ec86c81dfc
commit 008dbd61eb
3 changed files with 28 additions and 20 deletions
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drivers/ata/ahci.h
+7 -1
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@@ -227,6 +227,12 @@ enum {
EM_CTL_RST = (1 << 9), /* Reset */
EM_CTL_TM = (1 << 8), /* Transmit Message */
EM_CTL_ALHD = (1 << 26), /* Activity LED */
/* em message type */
EM_MSG_TYPE_LED = (1 << 0), /* LED */
EM_MSG_TYPE_SAFTE = (1 << 1), /* SAF-TE */
EM_MSG_TYPE_SES2 = (1 << 2), /* SES-2 */
EM_MSG_TYPE_SGPIO = (1 << 3), /* SGPIO */
};
struct ahci_cmd_hdr {
@@ -282,9 +288,9 @@ struct ahci_host_priv {
u32 saved_cap2; /* saved initial cap2 */
u32 saved_port_map; /* saved initial port_map */
u32 em_loc; /* enclosure management location */
u32 em_msg_type; /* EM message type */
};
extern int ahci_em_messages;
extern int ahci_ignore_sss;
extern struct scsi_host_template ahci_sht;