NetBSD/sys/dev/marvell
scw 0dcbc9ae84 Try to drain the Tx pending queues after dealing with Rx/Tx interrupts.
This fixes a bug whereby a fast cpu with a decent cache can easily
outstrip the GT's ability to put packets on the wire, resulting in a
permanent backlog of mbufs in the Tx pending queues under heavy Tx load.

The bug was masked if the packet buffer was mapped non-cached, which
slowed down the cpu to where it couldn't keep up with the GT at 100mbit.
2003-08-05 14:55:06 +00:00
..
README
files.discovery Add an option to control whether the GT's internal PCI Arbiter should 2003-05-27 11:39:50 +00:00
gt.c add missing __KERNEL_RCSID() 2003-07-14 15:47:00 +00:00
gtbrgreg.h
gtethreg.h Use a subregion for the mac's ethernet registers. Shaves 512 bytes 2003-03-17 16:41:15 +00:00
gtidma.c add missing __KERNEL_RCSID() 2003-07-14 15:47:00 +00:00
gtidmareg.h
gtidmavar.h
gtintrreg.h
gtmpsc.c add missing __KERNEL_RCSID() 2003-07-14 15:47:00 +00:00
gtmpscreg.h
gtmpscvar.h Make gtmpsc configurable via config file. (baud rate source, frequency). 2003-03-24 17:02:14 +00:00
gtpci.c add missing __KERNEL_RCSID() 2003-07-14 15:47:00 +00:00
gtpcireg.h Fix tyops. Add 2 defines. 2003-03-24 17:03:18 +00:00
gtpcivar.h Add basic support for non-PCI host mode. 2003-06-12 19:18:49 +00:00
gtreg.h
gtsdmareg.h
gtvar.h Add basic support for non-PCI host mode. 2003-06-12 19:18:49 +00:00
if_gfe.c Try to drain the Tx pending queues after dealing with Rx/Tx interrupts. 2003-08-05 14:55:06 +00:00
if_gfevar.h Use PAGE_SIZE rather than NBPG. 2003-04-08 23:39:14 +00:00
obio.c add missing __KERNEL_RCSID() 2003-07-14 15:47:00 +00:00

README

External m.d. interface points:

To config, code should configure 'gt' with a struct gtbus_attach_args
filled in.  The code should have already set up the bus_space and
bus_dma tags that are passed in.

m.d. pci_chipset_tag_t should contain at least a copy of the
gtpci_chipset_tag_t data structure.

m.d. code must provide the following functions:

pci_intr_map
pci_intr_string
pci_intr_establish,
pci_intr_disestablish

void *gtmpp_intr_establish(struct gt_softc *gt, int mpp_pin, int ipl,
		     int (*handler)(void *), void *arg);
	Add an interrupt attached to Discovery MPP pin <mpp_pin> at
	the given ipl with the given handler.

void gtmpp_intr_disestablish(struct gt_softc *gt, void *cookie);
	Remove an interrupt attached to Discovery MPP pin.

int gtget_macaddr(struct gt_softc *gt, int function, char *enaddr);
	Get MAC for Discovery ethernet <function>

void intr_enable(void);
	Enable all interrupts (disregarding spls)

void intr_disable(void);
	Disable all interrupts (disregarding spls)