isci: Added support for C0 to SCU Driver
C0 silicon updates the pci revision id and requires new AFE parameters
for phy signal integrity. Support for previous silicon revisions is
deprecated (it's also broken for the theoretical case of multiple
controllers at different silicon revisions, all the more reason to get
it removed as soon as possible)
Signed-off-by: Adam Gruchala <adam.gruchala@intel.com>
[fixed up deprecated silicon support]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/scsi/isci/probe_roms.c b/drivers/scsi/isci/probe_roms.c
index 084fdc6..bc52a61 100644
--- a/drivers/scsi/isci/probe_roms.c
+++ b/drivers/scsi/isci/probe_roms.c
@@ -136,6 +136,7 @@
struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw)
{
struct isci_orom *orom = NULL, *data;
+ int i, j;
if (request_firmware(&fw, ISCI_FW_NAME, &pdev->dev) != 0)
return NULL;
@@ -155,6 +156,20 @@
memcpy(orom, fw->data, fw->size);
+ /*
+ * deprecated: override default amp_control for pre-preproduction
+ * silicon revisions
+ */
+ if (isci_si_rev <= ISCI_SI_REVB0)
+ goto out;
+
+ for (i = 0; i < ARRAY_SIZE(orom->ctrl); i++)
+ for (j = 0; j < ARRAY_SIZE(orom->ctrl[i].phys); j++) {
+ orom->ctrl[i].phys[j].afe_tx_amp_control0 = 0xe7c03;
+ orom->ctrl[i].phys[j].afe_tx_amp_control1 = 0xe7c03;
+ orom->ctrl[i].phys[j].afe_tx_amp_control2 = 0xe7c03;
+ orom->ctrl[i].phys[j].afe_tx_amp_control3 = 0xe7c03;
+ }
out:
release_firmware(fw);