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MFp4: Add a sysctl knob to disable cycle master mode and add some comments.

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MFC after: 1 week
This commit is contained in:
Hidetoshi Shimokawa 2007-04-30 12:38:50 +00:00
parent 78b1168bd8
commit 6b3ecf71ea
1 changed files with 9 additions and 1 deletions
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10
sys/dev/firewire/fwohci.c
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@ -47,6 +47,7 @@
#include <sys/mbuf.h>
#include <sys/malloc.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/conf.h>
@ -76,6 +77,11 @@
#undef OHCI_DEBUG
static int nocyclemaster = 0;
SYSCTL_DECL(_hw_firewire);
SYSCTL_INT(_hw_firewire, OID_AUTO, nocyclemaster, CTLFLAG_RW, &nocyclemaster, 0,
"Do not send cycle start packets");
static char dbcode[16][0x10]={"OUTM", "OUTL","INPM","INPL",
"STOR","LOAD","NOP ","STOP",};
@ -1900,8 +1906,10 @@ busresetout:
/* Allow async. request to us */
OWRITE(sc, OHCI_AREQHI, 1 << 31);
/* XXX insecure ?? */
/* allow from all nodes */
OWRITE(sc, OHCI_PREQHI, 0x7fffffff);
OWRITE(sc, OHCI_PREQLO, 0xffffffff);
/* 0 to 4GB regison */
OWRITE(sc, OHCI_PREQUPPER, 0x10000);
/* Set ATRetries register */
OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff);
@ -1922,7 +1930,7 @@ busresetout:
/* cycle timer */
sc->cycle_lost = 0;
OWRITE(sc, FWOHCI_INTMASK, OHCI_INT_CYC_LOST);
if (node_id & OHCI_NODE_ROOT) {
if ((node_id & OHCI_NODE_ROOT) && !nocyclemaster) {
printf("CYCLEMASTER mode\n");
OWRITE(sc, OHCI_LNKCTL,
OHCI_CNTL_CYCMTR | OHCI_CNTL_CYCTIMER);