2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
8 * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2, or (at your option)
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; see the file COPYING. If not, write to
22 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 * Abstract: Hardware miniport for Drawbridge specific hardware functions.
31 #include <linux/kernel.h>
32 #include <linux/init.h>
33 #include <linux/types.h>
34 #include <linux/sched.h>
35 #include <linux/pci.h>
36 #include <linux/spinlock.h>
37 #include <linux/slab.h>
38 #include <linux/blkdev.h>
39 #include <linux/delay.h>
40 #include <linux/completion.h>
41 #include <linux/time.h>
42 #include <linux/interrupt.h>
43 #include <asm/semaphore.h>
45 #include <scsi/scsi_host.h>
49 static irqreturn_t aac_rkt_intr(int irq, void *dev_id, struct pt_regs *regs)
51 struct aac_dev *dev = dev_id;
52 unsigned long bellbits;
54 intstat = rkt_readb(dev, MUnit.OISR);
56 * Read mask and invert because drawbridge is reversed.
57 * This allows us to only service interrupts that have
61 /* Check to see if this is our interrupt. If it isn't just return */
64 bellbits = rkt_readl(dev, OutboundDoorbellReg);
65 if (bellbits & DoorBellPrintfReady) {
66 aac_printf(dev, rkt_readl(dev, IndexRegs.Mailbox[5]));
67 rkt_writel(dev, MUnit.ODR,DoorBellPrintfReady);
68 rkt_writel(dev, InboundDoorbellReg,DoorBellPrintfDone);
70 else if (bellbits & DoorBellAdapterNormCmdReady) {
71 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdReady);
72 aac_command_normal(&dev->queues->queue[HostNormCmdQueue]);
74 else if (bellbits & DoorBellAdapterNormRespReady) {
75 aac_response_normal(&dev->queues->queue[HostNormRespQueue]);
76 rkt_writel(dev, MUnit.ODR,DoorBellAdapterNormRespReady);
78 else if (bellbits & DoorBellAdapterNormCmdNotFull) {
79 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
81 else if (bellbits & DoorBellAdapterNormRespNotFull) {
82 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormCmdNotFull);
83 rkt_writel(dev, MUnit.ODR, DoorBellAdapterNormRespNotFull);
91 * aac_rkt_disable_interrupt - Disable interrupts
95 static void aac_rkt_disable_interrupt(struct aac_dev *dev)
97 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
101 * rkt_sync_cmd - send a command and wait
103 * @command: Command to execute
104 * @p1: first parameter
105 * @ret: adapter status
107 * This routine will send a synchronous command to the adapter and wait
108 * for its completion.
111 static int rkt_sync_cmd(struct aac_dev *dev, u32 command,
112 u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
113 u32 *status, u32 *r1, u32 *r2, u32 *r3, u32 *r4)
118 * Write the command into Mailbox 0
120 rkt_writel(dev, InboundMailbox0, command);
122 * Write the parameters into Mailboxes 1 - 6
124 rkt_writel(dev, InboundMailbox1, p1);
125 rkt_writel(dev, InboundMailbox2, p2);
126 rkt_writel(dev, InboundMailbox3, p3);
127 rkt_writel(dev, InboundMailbox4, p4);
129 * Clear the synch command doorbell to start on a clean slate.
131 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
133 * Disable doorbell interrupts
135 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
137 * Force the completion of the mask register write before issuing
140 rkt_readb (dev, MUnit.OIMR);
142 * Signal that there is a new synch command
144 rkt_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
150 * Wait up to 30 seconds
152 while (time_before(jiffies, start+30*HZ))
154 udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
156 * Mon960 will set doorbell0 bit when it has completed the command.
158 if (rkt_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
160 * Clear the doorbell.
162 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
167 * Yield the processor in case we are slow
169 set_current_state(TASK_UNINTERRUPTIBLE);
174 * Restore interrupt mask even though we timed out
176 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
180 * Pull the synch status from Mailbox 0.
183 *status = rkt_readl(dev, IndexRegs.Mailbox[0]);
185 *r1 = rkt_readl(dev, IndexRegs.Mailbox[1]);
187 *r2 = rkt_readl(dev, IndexRegs.Mailbox[2]);
189 *r3 = rkt_readl(dev, IndexRegs.Mailbox[3]);
191 *r4 = rkt_readl(dev, IndexRegs.Mailbox[4]);
193 * Clear the synch command doorbell.
195 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
197 * Restore interrupt mask
199 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
205 * aac_rkt_interrupt_adapter - interrupt adapter
208 * Send an interrupt to the i960 and breakpoint it.
211 static void aac_rkt_interrupt_adapter(struct aac_dev *dev)
213 rkt_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
214 NULL, NULL, NULL, NULL, NULL);
218 * aac_rkt_notify_adapter - send an event to the adapter
220 * @event: Event to send
222 * Notify the i960 that something it probably cares about has
226 static void aac_rkt_notify_adapter(struct aac_dev *dev, u32 event)
231 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
233 case HostNormRespNotFull:
234 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
236 case AdapNormRespQue:
237 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
239 case HostNormCmdNotFull:
240 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
243 // rkt_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
244 // NULL, NULL, NULL, NULL, NULL);
247 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
250 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
259 * aac_rkt_start_adapter - activate adapter
262 * Start up processing on an i960 based AAC adapter
265 static void aac_rkt_start_adapter(struct aac_dev *dev)
267 struct aac_init *init;
270 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
272 * First clear out all interrupts. Then enable the one's that we
275 rkt_writeb(dev, MUnit.OIMR, 0xff);
276 rkt_writel(dev, MUnit.ODR, 0xffffffff);
277 // rkt_writeb(dev, MUnit.OIMR, ~(u8)OUTBOUND_DOORBELL_INTERRUPT_MASK);
278 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
280 // We can only use a 32 bit address here
281 rkt_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
282 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
286 * aac_rkt_check_health
287 * @dev: device to check if healthy
289 * Will attempt to determine if the specified adapter is alive and
290 * capable of handling requests, returning 0 if alive.
292 static int aac_rkt_check_health(struct aac_dev *dev)
294 u32 status = rkt_readl(dev, MUnit.OMRx[0]);
297 * Check to see if the board failed any self tests.
299 if (status & SELF_TEST_FAILED)
302 * Check to see if the board panic'd.
304 if (status & KERNEL_PANIC) {
310 dma_addr_t paddr, baddr;
313 if ((status & 0xFF000000L) == 0xBC000000L)
314 return (status >> 16) & 0xFF;
315 buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
319 post = pci_alloc_consistent(dev->pdev,
320 sizeof(struct POSTSTATUS), &paddr);
322 pci_free_consistent(dev->pdev, 512, buffer, baddr);
325 memset(buffer, 0, 512);
326 post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
327 post->Post_Address = cpu_to_le32(baddr);
328 rkt_writel(dev, MUnit.IMRx[0], paddr);
329 rkt_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
330 NULL, NULL, NULL, NULL, NULL);
331 pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
333 if ((buffer[0] == '0') && (buffer[1] == 'x')) {
334 ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
336 ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
338 pci_free_consistent(dev->pdev, 512, buffer, baddr);
342 * Wait for the adapter to be up and running.
344 if (!(status & KERNEL_UP_AND_RUNNING))
353 * aac_rkt_init - initialize an i960 based AAC card
354 * @dev: device to configure
356 * Allocate and set up resources for the i960 based AAC variants. The
357 * device_interface in the commregion will be allocated and linked
358 * to the comm region.
361 int aac_rkt_init(struct aac_dev *dev)
364 unsigned long status;
372 * Map in the registers from the adapter.
374 if((dev->regs.rkt = ioremap((unsigned long)dev->scsi_host_ptr->base, 8192))==NULL)
376 printk(KERN_WARNING "aacraid: unable to map i960.\n" );
380 * Check to see if the board failed any self tests.
382 if (rkt_readl(dev, MUnit.OMRx[0]) & SELF_TEST_FAILED) {
383 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
387 * Check to see if the monitor panic'd while booting.
389 if (rkt_readl(dev, MUnit.OMRx[0]) & MONITOR_PANIC) {
390 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
394 * Check to see if the board panic'd while booting.
396 if (rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC) {
397 printk(KERN_ERR "%s%d: adapter kernel panic'd.\n", dev->name, instance);
402 * Wait for the adapter to be up and running. Wait up to 3 minutes
404 while (!(rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_UP_AND_RUNNING))
406 if(time_after(jiffies, start+180*HZ))
408 status = rkt_readl(dev, MUnit.OMRx[0]);
409 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
410 dev->name, instance, status);
413 set_current_state(TASK_UNINTERRUPTIBLE);
416 if (request_irq(dev->scsi_host_ptr->irq, aac_rkt_intr, SA_SHIRQ|SA_INTERRUPT, "aacraid", (void *)dev)<0)
418 printk(KERN_ERR "%s%d: Interrupt unavailable.\n", name, instance);
422 * Fill in the function dispatch table.
424 dev->a_ops.adapter_interrupt = aac_rkt_interrupt_adapter;
425 dev->a_ops.adapter_disable_int = aac_rkt_disable_interrupt;
426 dev->a_ops.adapter_notify = aac_rkt_notify_adapter;
427 dev->a_ops.adapter_sync_cmd = rkt_sync_cmd;
428 dev->a_ops.adapter_check_health = aac_rkt_check_health;
431 * First clear out all interrupts. Then enable the one's that we
434 rkt_writeb(dev, MUnit.OIMR, 0xff);
435 rkt_writel(dev, MUnit.ODR, 0xffffffff);
436 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
438 if (aac_init_adapter(dev) == NULL)
441 * Start any kernel threads needed
443 dev->thread_pid = kernel_thread((int (*)(void *))aac_command_thread, dev, 0);
444 if(dev->thread_pid < 0)
446 printk(KERN_ERR "aacraid: Unable to create rkt thread.\n");
450 * Tell the adapter that all is configured, and it can start
453 aac_rkt_start_adapter(dev);
460 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
461 free_irq(dev->scsi_host_ptr->irq, (void *)dev);
464 iounmap(dev->regs.rkt);