Author: np
Date: Wed Nov 19 20:16:56 2014
New Revision: 274724
URL: https://svnweb.freebsd.org/changeset/base/274724
Log:
cxgbe(4): figure out the max payload size and save it for later.
MFC after: 1 week
Modified:
head/sys/dev/cxgbe/common/common.h
head/sys/dev/cxgbe/t4_main.c
Modified: head/sys/dev/cxgbe/common/common.h
==============================================================================
--- head/sys/dev/cxgbe/common/common.h Wed Nov 19 19:46:58 2014
(r274723)
+++ head/sys/dev/cxgbe/common/common.h Wed Nov 19 20:16:56 2014
(r274724)
@@ -238,6 +238,7 @@ struct vpd_params {
struct pci_params {
unsigned int vpd_cap_addr;
+ unsigned int mps;
unsigned short speed;
unsigned short width;
};
Modified: head/sys/dev/cxgbe/t4_main.c
==============================================================================
--- head/sys/dev/cxgbe/t4_main.c Wed Nov 19 19:46:58 2014
(r274723)
+++ head/sys/dev/cxgbe/t4_main.c Wed Nov 19 20:16:56 2014
(r274724)
@@ -594,6 +594,8 @@ t4_attach(device_t dev)
v = pci_read_config(dev, i + PCIER_DEVICE_CTL, 2);
v |= PCIEM_CTL_RELAXED_ORD_ENABLE;
pci_write_config(dev, i + PCIER_DEVICE_CTL, v, 2);
+
+ sc->params.pci.mps = 128 << ((v & PCIEM_CTL_MAX_PAYLOAD) >> 5);
}
sc->traceq = -1;
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