From: Dave Olson Date: Fri, 20 Jul 2007 21:23:37 +0000 (-0700) Subject: IB/ipath: Fix some issues with buffer cancel and sendctrl register update X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3810f2a84e994e295e181eb9bd4b8007f611b5eb;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git IB/ipath: Fix some issues with buffer cancel and sendctrl register update There was confused use of INFINIPATH_S_PIOBUFAVAILUPD (value) and IPATH_S_PIOBUFAVAILUPD (bit position). Also, some callers of ipath_cancel_sends() need kr_sendctrl restored, and some want to do it later. Signed-off-by: Dave Olson Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c index 09c5fd84b1e..6ccba365a24 100644 --- a/drivers/infiniband/hw/ipath/ipath_driver.c +++ b/drivers/infiniband/hw/ipath/ipath_driver.c @@ -740,7 +740,7 @@ void ipath_disarm_piobufs(struct ipath_devdata *dd, unsigned first, * pioavail updates to memory to stop. */ ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - sendorig & ~IPATH_S_PIOBUFAVAILUPD); + sendorig & ~INFINIPATH_S_PIOBUFAVAILUPD); sendorig = ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); @@ -1614,7 +1614,7 @@ int ipath_waitfor_mdio_cmdready(struct ipath_devdata *dd) * it's safer to always do it. * PIOAvail bits are updated by the chip as if normal send had happened. */ -void ipath_cancel_sends(struct ipath_devdata *dd) +void ipath_cancel_sends(struct ipath_devdata *dd, int restore_sendctrl) { ipath_dbg("Cancelling all in-progress send buffers\n"); dd->ipath_lastcancel = jiffies+HZ/2; /* skip armlaunch errs a bit */ @@ -1627,6 +1627,9 @@ void ipath_cancel_sends(struct ipath_devdata *dd) ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); ipath_disarm_piobufs(dd, 0, (unsigned)(dd->ipath_piobcnt2k + dd->ipath_piobcnt4k)); + if (restore_sendctrl) /* else done by caller later */ + ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, + dd->ipath_sendctrl); /* and again, be sure all have hit the chip */ ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); @@ -1655,7 +1658,7 @@ static void ipath_set_ib_lstate(struct ipath_devdata *dd, int which) /* flush all queued sends when going to DOWN or INIT, to be sure that * they don't block MAD packets */ if (!linkcmd || linkcmd == INFINIPATH_IBCC_LINKCMD_INIT) - ipath_cancel_sends(dd); + ipath_cancel_sends(dd, 1); ipath_write_kreg(dd, dd->ipath_kregs->kr_ibcctrl, dd->ipath_ibcctrl | which); @@ -2000,7 +2003,7 @@ void ipath_shutdown_device(struct ipath_devdata *dd) ipath_set_ib_lstate(dd, INFINIPATH_IBCC_LINKINITCMD_DISABLE << INFINIPATH_IBCC_LINKINITCMD_SHIFT); - ipath_cancel_sends(dd); + ipath_cancel_sends(dd, 0); /* disable IBC */ dd->ipath_control &= ~INFINIPATH_C_LINKENABLE; diff --git a/drivers/infiniband/hw/ipath/ipath_init_chip.c b/drivers/infiniband/hw/ipath/ipath_init_chip.c index 49951d58380..71e6c9d4a71 100644 --- a/drivers/infiniband/hw/ipath/ipath_init_chip.c +++ b/drivers/infiniband/hw/ipath/ipath_init_chip.c @@ -782,7 +782,7 @@ int ipath_init_chip(struct ipath_devdata *dd, int reinit) * Follows early_init because some chips have to initialize * PIO buffers in early_init to avoid false parity errors. */ - ipath_cancel_sends(dd); + ipath_cancel_sends(dd, 0); /* early_init sets rcvhdrentsize and rcvhdrsize, so this must be * done after early_init */ diff --git a/drivers/infiniband/hw/ipath/ipath_intr.c b/drivers/infiniband/hw/ipath/ipath_intr.c index cba2041bb0b..0c075cf8316 100644 --- a/drivers/infiniband/hw/ipath/ipath_intr.c +++ b/drivers/infiniband/hw/ipath/ipath_intr.c @@ -303,7 +303,7 @@ static void handle_e_ibstatuschanged(struct ipath_devdata *dd, * Flush all queued sends when link went to DOWN or INIT, * to be sure that they don't block SMA and other MAD packets */ - ipath_cancel_sends(dd); + ipath_cancel_sends(dd, 1); } else if (lstate == IPATH_IBSTATE_INIT || lstate == IPATH_IBSTATE_ARM || lstate == IPATH_IBSTATE_ACTIVE) { @@ -799,13 +799,13 @@ void ipath_clear_freeze(struct ipath_devdata *dd) * therefore would not be sent, and eventually * might cause the process to run out of bufs */ - ipath_cancel_sends(dd); + ipath_cancel_sends(dd, 0); ipath_write_kreg(dd, dd->ipath_kregs->kr_control, dd->ipath_control); /* ensure pio avail updates continue */ ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, - dd->ipath_sendctrl & ~IPATH_S_PIOBUFAVAILUPD); + dd->ipath_sendctrl & ~INFINIPATH_S_PIOBUFAVAILUPD); ipath_read_kreg64(dd, dd->ipath_kregs->kr_scratch); ipath_write_kreg(dd, dd->ipath_kregs->kr_sendctrl, dd->ipath_sendctrl); diff --git a/drivers/infiniband/hw/ipath/ipath_kernel.h b/drivers/infiniband/hw/ipath/ipath_kernel.h index ace63ef78e6..ef773298b80 100644 --- a/drivers/infiniband/hw/ipath/ipath_kernel.h +++ b/drivers/infiniband/hw/ipath/ipath_kernel.h @@ -683,7 +683,7 @@ int ipath_unordered_wc(void); void ipath_disarm_piobufs(struct ipath_devdata *, unsigned first, unsigned cnt); -void ipath_cancel_sends(struct ipath_devdata *); +void ipath_cancel_sends(struct ipath_devdata *, int); int ipath_create_rcvhdrq(struct ipath_devdata *, struct ipath_portdata *); void ipath_free_pddata(struct ipath_devdata *, struct ipath_portdata *);