diff options
Diffstat (limited to 'sys/dev/aic7xxx/aic7xxx.h')
| -rw-r--r-- | sys/dev/aic7xxx/aic7xxx.h | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/sys/dev/aic7xxx/aic7xxx.h b/sys/dev/aic7xxx/aic7xxx.h index 06f7d4a..560cb3f 100644 --- a/sys/dev/aic7xxx/aic7xxx.h +++ b/sys/dev/aic7xxx/aic7xxx.h @@ -34,7 +34,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: aic7xxx.h,v 1.40 1997/02/25 03:05:35 gibbs Exp $ + * $Id: aic7xxx.h,v 1.1 1998/09/15 07:24:16 gibbs Exp $ */ #ifndef _AIC7XXX_H_ @@ -68,6 +68,12 @@ * aic7850 has only 3. */ +#define AHC_TMODE_CMDS 256 /* + * Ring Buffer of incoming target commands. + * We allocate 256 to simplify the logic + * in the sequencer by using the natural + * wrap point of an 8bit counter. + */ #if defined(__FreeBSD__) extern u_long ahc_unit; @@ -247,13 +253,17 @@ struct scb_data { * Connection desciptor for select-in requests in target mode. * The first byte is the connecting target, followed by identify * message and optional tag information, terminated by 0xFF. The - * remainder is the command to execute. + * remainder is the command to execute. The cmd_valid byte is on + * an 8 byte boundary to simplify setting it on aic7880 hardware + * which only has limited direct access to the DMA FIFO. */ struct target_cmd { - u_int8_t icl; /* Really only holds Initiator ID */ - u_int8_t targ_id; /* Target ID we were selected at */ - u_int8_t identify; /* Identify message */ - u_int8_t bytes[29]; + u_int8_t initiator_channel; + u_int8_t targ_id; /* Target ID we were selected at */ + u_int8_t identify; /* Identify message */ + u_int8_t bytes[21]; + u_int8_t cmd_valid; + u_int8_t pad[7]; }; /* @@ -462,10 +472,11 @@ struct ahc_softc { int unsolicited_ints; pcici_t pci_config_id; - /* Hmmm. */ + /* + * Target incoming command FIFO. + */ struct target_cmd *targetcmds; - int next_targetcmd; - int num_targetcmds; + u_int8_t tqinfifonext; /* * Incoming and outgoing message handling. |
