diff options
author | scottl <scottl@FreeBSD.org> | 2013-08-12 23:30:01 +0000 |
---|---|---|
committer | scottl <scottl@FreeBSD.org> | 2013-08-12 23:30:01 +0000 |
commit | 28bd1409da1e9911c4152b06c5c7b89235e2b17a (patch) | |
tree | 34ad11c71aadd28f5ff680b63e3f0fd70956bed5 /sys/dev/rp | |
parent | c8a53736fe9139a202d17ed7f95389d33326cb61 (diff) | |
download | FreeBSD-src-28bd1409da1e9911c4152b06c5c7b89235e2b17a.zip FreeBSD-src-28bd1409da1e9911c4152b06c5c7b89235e2b17a.tar.gz |
Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI
command register. The lazy BAR allocation code in FreeBSD sometimes
disables this bit when it detects a range conflict, and will re-enable
it on demand when a driver allocates the BAR. Thus, the bit is no longer
a reliable indication of capability, and should not be checked. This
results in the elimination of a lot of code from drivers, and also gives
the opportunity to simplify a lot of drivers to use a helper API to set
the busmaster enable bit.
This changes fixes some recent reports of disk controllers and their
associated drives/enclosures disappearing during boot.
Submitted by: jhb
Reviewed by: jfv, marius, achadd, achim
MFC after: 1 day
Diffstat (limited to 'sys/dev/rp')
-rw-r--r-- | sys/dev/rp/rp_pci.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/sys/dev/rp/rp_pci.c b/sys/dev/rp/rp_pci.c index cbd5516..e7b9832 100644 --- a/sys/dev/rp/rp_pci.c +++ b/sys/dev/rp/rp_pci.c @@ -151,7 +151,6 @@ rp_pciattach(device_t dev) CONTROLLER_t *ctlp; int unit; int retval; - u_int32_t stcmd; ctlp = device_get_softc(dev); bzero(ctlp, sizeof(*ctlp)); @@ -161,13 +160,6 @@ rp_pciattach(device_t dev) ctlp->aiop2off = rp_pci_aiop2off; ctlp->ctlmask = rp_pci_ctlmask; - /* Wake up the device. */ - stcmd = pci_read_config(dev, PCIR_COMMAND, 4); - if ((stcmd & PCIM_CMD_PORTEN) == 0) { - stcmd |= (PCIM_CMD_PORTEN); - pci_write_config(dev, PCIR_COMMAND, 4, stcmd); - } - /* The IO ports of AIOPs for a PCI controller are continuous. */ ctlp->io_num = 1; ctlp->io_rid = malloc(sizeof(*(ctlp->io_rid)) * ctlp->io_num, M_DEVBUF, M_NOWAIT | M_ZERO); |