diff options
Diffstat (limited to 'sys/dev/firewire/fwohci.c')
| -rw-r--r-- | sys/dev/firewire/fwohci.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/sys/dev/firewire/fwohci.c b/sys/dev/firewire/fwohci.c index ae753d5..214f8f8 100644 --- a/sys/dev/firewire/fwohci.c +++ b/sys/dev/firewire/fwohci.c @@ -55,6 +55,7 @@ #include <sys/kdb.h> #include <machine/bus.h> +#include <machine/md_var.h> #if defined(__DragonFly__) || __FreeBSD_version < 500000 #include <machine/clock.h> /* for DELAY() */ @@ -202,6 +203,7 @@ static void fwohci_task_dma(void *, int); #define OHCI_PREQLO 0x118 #define OHCI_PREQLOCLR 0x11c #define OHCI_PREQUPPER 0x120 +#define OHCI_PREQUPPER_MAX 0xffff0000 #define OHCI_SID_BUF 0x64 #define OHCI_SID_CNT 0x68 @@ -869,7 +871,7 @@ fwohci_execute_db2(void *arg, bus_dma_segment_t *segs, int nseg, static void fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch) { - int i, s; + int i; int tcode, hdr_len, pl_off; int fsegment = -1; uint32_t off; @@ -895,7 +897,6 @@ fwohci_start(struct fwohci_softc *sc, struct fwohci_dbch *dbch) if (dbch->flags & FWOHCI_DBCH_FULL) return; - s = splfw(); db_tr = dbch->top; txloop: xfer = STAILQ_FIRST(&dbch->xferq.q); @@ -1045,7 +1046,6 @@ kick: } dbch->top = db_tr; - splx(s); return; } @@ -1841,6 +1841,7 @@ static void fwohci_intr_core(struct fwohci_softc *sc, uint32_t stat, int count) { struct firewire_comm *fc = (struct firewire_comm *)sc; + uintmax_t prequpper; uint32_t node_id, plen; FW_GLOCK_ASSERT(fc); @@ -1872,8 +1873,27 @@ fwohci_intr_core(struct fwohci_softc *sc, uint32_t stat, int count) /* allow from all nodes */ OWRITE(sc, OHCI_PREQHI, 0x7fffffff); OWRITE(sc, OHCI_PREQLO, 0xffffffff); - /* 0 to 4GB region */ - OWRITE(sc, OHCI_PREQUPPER, 0x10000); + prequpper = ((uintmax_t)Maxmem << PAGE_SHIFT) >> 16; + if (prequpper > OHCI_PREQUPPER_MAX) { + device_printf(fc->dev, + "Physical memory size of 0x%jx exceeds " + "fire wire address space. Limiting dma " + "to memory below 0x%jx\n", + (uintmax_t)Maxmem << PAGE_SHIFT, + (uintmax_t)OHCI_PREQUPPER_MAX << 16); + prequpper = OHCI_PREQUPPER_MAX; + } + OWRITE(sc, OHCI_PREQUPPER, prequpper & 0xffffffff); + if (OREAD(sc, OHCI_PREQUPPER) != + (prequpper & 0xffffffff)) { + device_printf(fc->dev, + "PhysicalUpperBound register is not " + "implemented. Physical memory access " + "is limited to the first 4GB\n"); + device_printf(fc->dev, + "PhysicalUpperBound = 0x%08x\n", + OREAD(sc, OHCI_PREQUPPER)); + } } /* Set ATRetries register */ OWRITE(sc, OHCI_ATRETRY, 1<<(13+16) | 0xfff); @@ -2193,7 +2213,7 @@ fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) struct fw_bulkxfer *chunk; struct fw_xferq *ir; uint32_t stat; - int s, w = 0, ldesc; + int w = 0, ldesc; ir = fc->ir[dmach]; ldesc = sc->ir[dmach].ndesc - 1; @@ -2201,7 +2221,6 @@ fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) #if 0 dump_db(sc, dmach); #endif - s = splfw(); if ((ir->flag & FWXFERQ_HANDLER) == 0) FW_GLOCK(fc); fwdma_sync_multiseg_all(sc->ir[dmach].am, BUS_DMASYNC_POSTREAD); @@ -2240,7 +2259,6 @@ fwohci_rbuf_update(struct fwohci_softc *sc, int dmach) } if ((ir->flag & FWXFERQ_HANDLER) == 0) FW_GUNLOCK(fc); - splx(s); if (w == 0) return; |
