redonkable/alistair23-linux
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[SCSI] isci: link speeds default to gen 2

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Gen-3 operation is marginal, default to gen-2 for now.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Jeff Skirvin 2012-01-04 01:33:00 -08:00 committed by James Bottomley
parent 6024d38b86
commit be168a3b89
2 changed files with 4 additions and 3 deletions
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5
drivers/scsi/isci/host.c
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@ -1676,8 +1676,9 @@ static void sci_controller_set_default_config_parameters(struct isci_host *ihost
/* Initialize all of the phy parameter information. */
for (index = 0; index < SCI_MAX_PHYS; index++) {
/* Default to 6G (i.e. Gen 3) for now. */
ihost->user_parameters.phys[index].max_speed_generation = 3;
/* Default to 3G (i.e. Gen 2). */
ihost->user_parameters.phys[index].max_speed_generation =
SCIC_SDS_PARM_GEN2_SPEED;
/* the frequencies cannot be 0 */
ihost->user_parameters.phys[index].align_insertion_frequency = 0x7f;

2
drivers/scsi/isci/init.c
View file

@ -114,7 +114,7 @@ u16 stp_inactive_to = 5;
module_param(stp_inactive_to, ushort, 0);
MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)");
unsigned char phy_gen = 3;
unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED;
module_param(phy_gen, byte, 0);
MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)");