diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2005-09-16 19:28:01 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-09-20 12:44:31 -0500 |
| commit | fe607aa94f5d25ee84f9a9a4fdf2cce3765e12e4 (patch) | |
| tree | ca259d0afaa16ebc9ddc87e287e1358b069f3f60 /drivers/scsi/dc395x.c | |
| parent | beb8abd9a958999e238c31814230368045b942b3 (diff) | |
[SCSI] dc395x: atomic_kmap for PIO
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/dc395x.c')
| -rw-r--r-- | drivers/scsi/dc395x.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c index 600ba120286..c44af5795b1 100644 --- a/drivers/scsi/dc395x.c +++ b/drivers/scsi/dc395x.c @@ -976,6 +976,16 @@ static void send_srb(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb) } } +static inline void pio_trigger(void) +{ + static int feedback_requested; + + if (!feedback_requested) { + feedback_requested = 1; + printk(KERN_WARNING "%s: Please, contact <linux-scsi@vger.kernel.org> " + "to help improve support for your system.\n", __FILE__); + } +} /* Prepare SRB for being sent to Device DCB w/ command *cmd */ static void build_srb(struct scsi_cmnd *cmd, struct DeviceCtlBlk *dcb, @@ -2320,6 +2330,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, CFG2_WIDEFIFO); while (DC395x_read8(acb, TRM_S1040_SCSI_FIFOCNT) != 0x40) { u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); + pio_trigger(); *(srb->virt_addr)++ = byte; if (debug_enabled(DBG_PIO)) printk(" %02x", byte); @@ -2331,6 +2342,7 @@ static void data_in_phase0(struct AdapterCtlBlk *acb, struct ScsiReqBlk *srb, /* Read the last byte ... */ if (srb->total_xfer_length > 0) { u8 byte = DC395x_read8(acb, TRM_S1040_SCSI_FIFO); + pio_trigger(); *(srb->virt_addr)++ = byte; srb->total_xfer_length--; if (debug_enabled(DBG_PIO)) @@ -2507,6 +2519,7 @@ static void data_io_transfer(struct AdapterCtlBlk *acb, if (debug_enabled(DBG_PIO)) printk(" %02x", (unsigned char) *(srb->virt_addr)); + pio_trigger(); DC395x_write8(acb, TRM_S1040_SCSI_FIFO, *(srb->virt_addr)++); |