drivers/scsi/qla1280.c

39 	- Handle interrupts during mailbox testing
50 	- Delete completion queue from srb if mailbox command failed to
93 	- Use completion queue for mailbox commands instead of busy wait
121 	- Rely on mailbox commands generating interrupts - do not
139 	- Enable interrupts early (before any mailbox access) in preparation
140 	  for cleaning up the mailbox handling
729 	printk(KERN_ERR "scsi(%ld): mailbox timed out, mailbox0 %04x, "
907 	 * by the issuance of the mailbox command.
1420 	/* Insure mailbox registers are free. */
2399  *      Issue mailbox command and waits for completion.
2403  *      mr = mailbox registers to load.
2404  *      mb = data pointer for mailbox registers.
2407  *      mb[MAILBOX_REGISTER_COUNT] = returned mailbox data.
2425 		printk(KERN_ERR "Warning mailbox wait already in use!\n");
2430 	 * We really should start out by verifying that the mailbox is
2433 	/* Load mailbox registers. */
2463 	/* Check for mailbox command timeout. */
2478 	/* Load return mailbox registers. */
3340 	uint16_t mailbox[MAILBOX_REGISTER_COUNT];
3351 	/* Save mailbox register 5 */
3352 	mailbox[5] = RD_REG_WORD(&reg->mailbox5);
3354 	/* Check for mailbox interrupt. */
3356 	mailbox[0] = RD_REG_WORD_dmasync(&reg->semaphore);
3358 	if (mailbox[0] & BIT_0) {
3359 		/* Get mailbox data. */
3360 		/* dprintk(1, "qla1280_isr: In Get mailbox data \n"); */
3362 		wptr = &mailbox[0];
3366 		if (mailbox[0] != MBA_SCSI_COMPLETION) {
3375 		/* Release mailbox registers. */
3380 		dprintk(5, "qla1280_isr: mailbox interrupt mailbox[0] = 0x%x",
3381 			mailbox[0]);
3384 		switch (mailbox[0]) {
3386 			dprintk(5, "qla1280_isr: mailbox SCSI response "
3391 				index = mailbox[2] << 16 | mailbox[1];
3421 			index = mailbox[6] & BIT_0;
3431 			       "%xh, mbx3=%xh\n", mailbox[1], mailbox[2],
3432 			       mailbox[3]);
3459 			index = mailbox[6] & BIT_0;
3470 			if (mailbox[0] < MBA_ASYNC_EVENT) {
3471 				wptr = &mailbox[0];
3486 	 * We will receive interrupts during mailbox testing prior to
3494 	if (mailbox[5] >= RESPONSE_ENTRY_CNT)
3497 	while (ha->rsp_ring_index != mailbox[5]) {
3500 		dprintk(5, "qla1280_isr: ha->rsp_ring_index = 0x%x, mailbox[5]"
3501 			" = 0x%x\n", ha->rsp_ring_index, mailbox[5]);
3509 					"0x%x mailbox[5] = 0x%x, comp_status "
3511 					ha->rsp_ring_index, mailbox[5],
3517 				"0x%x, mailbox[5] = 0x%x\n",
3518 				ha->rsp_ring_index, mailbox[5]);