4  * The contents of this file are subject to the terms of the
24  * Use is subject to license terms.
33  *    various routines that are used to implement remote Config ROM reading.
39  *    a block read and fallback to quad reads if this fails.
171  *    is the bus reset thread. Its sole purpose is to read/reread config roms
218 		/* Try to reallocate all isoch resources */
264  *    to read the config roms as appropriate (indicated by BR_THR_CFGROM_SCAN).
265  *    If the services layer wishes to kill the bus reset thread, it signals
328  *    completion queue and passes it to the "completion handler" function
497  *    tells the ndi event framework to invoke any callbacks registered for
525  *    node cfgrom state. Drops topology_tree_mutex around the calls to
542 	 * if cfgrom is non-NULL, this has to be generation changed
543 	 * case (where we allocate cfgrom again to reread the cfgrom)
549 	 * if node matched, either cfgrom has to be NULL or link should be
649  *    Copies config rom info from "from" node to "to" node. Clears
652  *    has a pointer to it; if clear, both the node in the current tree as
653  *    well as the corresponding node in the old tree point to the same memory).
656 s1394_copy_cfgrom(s1394_node_t *to, s1394_node_t *from)
659 	    "", tnf_int, to_node, to->node_num, tnf_int,
662 	ASSERT(to->cfgrom == NULL);
664 	to->cfgrom = from->cfgrom;
665 	to->cfgrom_state = from->cfgrom_state;
666 	to->cfgrom_valid_size = from->cfgrom_valid_size;
667 	to->cfgrom_size = from->cfgrom_size;
668 	to->node_state = from->node_state;
670 	bcopy(from->dir_stack, to->dir_stack,
674 	to->cfgrom_quad_to_read = from->cfgrom_quad_to_read;
676 	CLEAR_CFGROM_NEW_ALLOC(to);
693 		s1394_selfid_pkt_t *selfid_pkt = to->selfid_packet;
696 			SET_LINK_ACTIVE(to);
705  *    Attempts to kick off reading IEEE1212_NODE_CAP_QUAD quad or quad 0.
707  *    issued, else sets status to the failure reason and returns DDI_FAILURE.
741 		    "", tnf_string, msg, "unable to relock the tree");
766 	 * if this is a matched node, read quad 2 (node capabilities) to
801 		    "", tnf_string, msg, "Unable to start read");
802 		/* free the command if it wasn't handed over to the HAL */
826  *    Attempts to start reading node->cfgrom_quad_to_read quadlet. Increments
828  *    else sets status to the failure reason and returns DDI_FAILURE.
864 		    "unable to relock the tree");
888 		    "unable to start read");
889 		/* free the command if it wasn't handed over to the HAL */
913  *    Attempts to read bus info blocks for nodes as needed. Returns DDI_FAILURE
971 		 * or if matched but config rom generation > 1 (this is to
1061  *    did not change, move targets hanging off the old node to the current
1068  *    S1394_HCMD_NODE_DONE, else returns S1394_HCMD_NODE_EXPECT_MORE (to
1074  *    is not due to bus generations changing.
1101 		    "unable to lock tree");
1178 					/* we failed to relock the tree */
1190 		 * Pass1 Rio bug workaround. Due to this bug, if we read
1223 					    "unable to relock tree", tnf_uint,
1230 					 * Failed to get going. If command was
1231 					 * successfully handed over to the HAL,
1239 					    "unable to read", tnf_uint,
1294 				    "unable to relock tree", tnf_uint,
1301 				 * Failed to get going. If command was
1302 				 * successfully handed over to the HAL,
1309 				    msg, "unable to re-read", tnf_uint,
1370  *    and new topology trees to identify which node moved where. Processes
1420 		    "unable to relock the tree");
1439 		    "unable to relock the tree after isoch notify");
1453 		    "unable to relock the tree after reset notify");
1459 	/* Set HAL state to normal */
1483 		    "unable to relock after processing topology tree");
1523  *    valid and calls s1394_update_devinfo_tree() to parse the config rom.
1524  *    If need to get more quadlets, attempts to kick off the read and returns
1528  *    S1394_HCMD_NODE_DONE, else returns S1394_HCMD_NODE_EXPECT_MORE (to
1560 		    "unable to lock tree", tnf_int, node_num, node_num,
1602 				    msg, "unable to relock the tree",
1650 				    msg, "unable to relock for reread",
1665 					    tnf_string, msg, "unable to retry",
1719 		 * a DDI_FAILURE. Set locked to 0 so in this case so that
1816 		    "unable to relock the tree");
1828  *    due to bus reset else appends the command to the completion queue
1932  *    attempts to match nnode (which is in the current topology tree) with
1935  *    are set point to each other. Also, this routine makes both the nodes
1936  *    point at the same config rom.  If unable to relock the tree, returns
2016 			 * If generations changed, need to offline any targets
2017 			 * hanging off the old node, prior to freeing up old
2096  *    attempt to match each node in the current topology tree with the a
2097  *    node in the old topology tree.  If unable to relock the tree, returns
2120 			 * changed, we want to call s1394_match_GUID() even
2240 	 * Ideally, we would like to do crc validations for the entire cfgrom
2302  *    time expires, the local host may attempt to become the Bus Manager.
2303  *    This is done by sending a request to the current IRM on the bus.  The
2350 	/* Send compare-swap to BUS_MANAGER_ID */
2421 			/* Need to free the command */
2449 			/* Need to free the command */
2461  *    to send the Bus Manager request to a remote IRM.  After the completion
2463  *    in the request to determine whether or not it has become the Bus
2465  *    incumbent_bus_mgr fields to their appropriate values.
2510 		    "Error while attempting to become bus manager",
2523 	/* Need to free the command */
2536  *    Its purpose is to determine whether the local node is capable of
2537  *    becoming the Bus Manager (has the IRMC bit set) and if so to call
2539  *    NOTE: we overload DDI_FAILURE return value to mean jump back to
2579  *    is used to perform those operations expected of the Bus Manager.
2585  *    root holdoff bit (to ensure that the cycle master is/stays root).
2587  *    NOTE: we overload DDI_FAILURE return value to mean jump back to
2604 	/* Wait for Bus Manager to be determined */
2605 	/* or a Bus Reset to happen */
2660 			/* Set the gap_count to optimum */
2760 				/* Try to become bus manager */
2772 				/* Wait 125ms, then try to become bus manager */
2794  *    is used to determine a device's maximum payload size.  That is to
2827 	/* Set dev_max_payload to local (HAL's) size */
2859 		/* Speed is to be filled in from speed map */
2867 		/* Set dev_max_payload to local (HAL's) size */
2878  *    is used to determine whether or not the current root node on the
2897 	/* Get a pointer to the root node */
2909 	 * We want to pick a new root if link is off or we don't have
2943  *    is called by s1394_do_bus_mgr_processing() to setup and send out
2948  *    NOTE: we overload DDI_FAILURE return value to mean jump back to
2967 	/* Gap count needs to be optimized */
2980 	/* Root node needs to be changed */
2998 			    "Unable to allocate PHY config packet");
3023 		/* Get a pointer to the HAL private struct */
3049 			    "Unable to send PHY config packet",
3118  *    Attempts to lock the topology tree. Returns DDI_FAILURE if generations
3119  *    changed or if the services layer signals the bus reset thread to go
3189  *    figures out the next quadlet to read. This maintains a stack of
3198  *    Returns 0 is more quads to read, else returns non-zero.
3243 	 * check to make sure we are looking at a dir. If the config rom
3244 	 * is broken, then revert to normal scanning of the config rom
3296 			 * cfgrom_valid_size to the len specfied as crc len
3334 					 * dir stack and fall back to serial
3368 					/* and set the next quadlet to read */

Indexes created Thu Sep 05 20:28:34 MDT 2024