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 * rkt_sync_cmd - send a command and wait
93 * @command: Command to execute
94 * @p1: first parameter
95 * @ret: adapter status
97 * This routine will send a synchronous command to the adapter and wait
101 static int rkt_sync_cmd(struct aac_dev *dev, u32 command,
102 u32 p1, u32 p2, u32 p3, u32 p4, u32 p5, u32 p6,
103 u32 *status, u32 *r1, u32 *r2, u32 *r3, u32 *r4)
108 * Write the command into Mailbox 0
110 rkt_writel(dev, InboundMailbox0, command);
112 * Write the parameters into Mailboxes 1 - 6
114 rkt_writel(dev, InboundMailbox1, p1);
115 rkt_writel(dev, InboundMailbox2, p2);
116 rkt_writel(dev, InboundMailbox3, p3);
117 rkt_writel(dev, InboundMailbox4, p4);
119 * Clear the synch command doorbell to start on a clean slate.
121 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
123 * Disable doorbell interrupts
125 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
127 * Force the completion of the mask register write before issuing
130 rkt_readb (dev, MUnit.OIMR);
132 * Signal that there is a new synch command
134 rkt_writel(dev, InboundDoorbellReg, INBOUNDDOORBELL_0);
140 * Wait up to 30 seconds
142 while (time_before(jiffies, start+30*HZ))
144 udelay(5); /* Delay 5 microseconds to let Mon960 get info. */
146 * Mon960 will set doorbell0 bit when it has completed the command.
148 if (rkt_readl(dev, OutboundDoorbellReg) & OUTBOUNDDOORBELL_0) {
150 * Clear the doorbell.
152 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
157 * Yield the processor in case we are slow
159 set_current_state(TASK_UNINTERRUPTIBLE);
164 * Restore interrupt mask even though we timed out
166 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
170 * Pull the synch status from Mailbox 0.
173 *status = rkt_readl(dev, IndexRegs.Mailbox[0]);
175 *r1 = rkt_readl(dev, IndexRegs.Mailbox[1]);
177 *r2 = rkt_readl(dev, IndexRegs.Mailbox[2]);
179 *r3 = rkt_readl(dev, IndexRegs.Mailbox[3]);
181 *r4 = rkt_readl(dev, IndexRegs.Mailbox[4]);
183 * Clear the synch command doorbell.
185 rkt_writel(dev, OutboundDoorbellReg, OUTBOUNDDOORBELL_0);
187 * Restore interrupt mask
189 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
195 * aac_rkt_interrupt_adapter - interrupt adapter
198 * Send an interrupt to the i960 and breakpoint it.
201 static void aac_rkt_interrupt_adapter(struct aac_dev *dev)
203 rkt_sync_cmd(dev, BREAKPOINT_REQUEST, 0, 0, 0, 0, 0, 0,
204 NULL, NULL, NULL, NULL, NULL);
208 * aac_rkt_notify_adapter - send an event to the adapter
210 * @event: Event to send
212 * Notify the i960 that something it probably cares about has
216 static void aac_rkt_notify_adapter(struct aac_dev *dev, u32 event)
221 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_1);
223 case HostNormRespNotFull:
224 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_4);
226 case AdapNormRespQue:
227 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_2);
229 case HostNormCmdNotFull:
230 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_3);
233 // rkt_sync_cmd(dev, HOST_CRASHING, 0, 0, 0, 0, 0, 0,
234 // NULL, NULL, NULL, NULL, NULL);
237 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_6);
240 rkt_writel(dev, MUnit.IDR,INBOUNDDOORBELL_5);
249 * aac_rkt_start_adapter - activate adapter
252 * Start up processing on an i960 based AAC adapter
255 static void aac_rkt_start_adapter(struct aac_dev *dev)
257 struct aac_init *init;
260 init->HostElapsedSeconds = cpu_to_le32(get_seconds());
262 * First clear out all interrupts. Then enable the one's that we
265 rkt_writeb(dev, MUnit.OIMR, 0xff);
266 rkt_writel(dev, MUnit.ODR, 0xffffffff);
267 // rkt_writeb(dev, MUnit.OIMR, ~(u8)OUTBOUND_DOORBELL_INTERRUPT_MASK);
268 rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
270 // We can only use a 32 bit address here
271 rkt_sync_cmd(dev, INIT_STRUCT_BASE_ADDRESS, (u32)(ulong)dev->init_pa,
272 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL);
276 * aac_rkt_check_health
277 * @dev: device to check if healthy
279 * Will attempt to determine if the specified adapter is alive and
280 * capable of handling requests, returning 0 if alive.
282 static int aac_rkt_check_health(struct aac_dev *dev)
284 u32 status = rkt_readl(dev, MUnit.OMRx[0]);
287 * Check to see if the board failed any self tests.
289 if (status & SELF_TEST_FAILED)
292 * Check to see if the board panic'd.
294 if (status & KERNEL_PANIC) {
300 dma_addr_t paddr, baddr;
303 if ((status & 0xFF000000L) == 0xBC000000L)
304 return (status >> 16) & 0xFF;
305 buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
309 post = pci_alloc_consistent(dev->pdev,
310 sizeof(struct POSTSTATUS), &paddr);
312 pci_free_consistent(dev->pdev, 512, buffer, baddr);
315 memset(buffer, 0, 512);
316 post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
317 post->Post_Address = cpu_to_le32(baddr);
318 rkt_writel(dev, MUnit.IMRx[0], paddr);
319 rkt_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
320 NULL, NULL, NULL, NULL, NULL);
321 pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
323 if ((buffer[0] == '0') && (buffer[1] == 'x')) {
324 ret = (buffer[2] <= '9') ? (buffer[2] - '0') : (buffer[2] - 'A' + 10);
326 ret += (buffer[3] <= '9') ? (buffer[3] - '0') : (buffer[3] - 'A' + 10);
328 pci_free_consistent(dev->pdev, 512, buffer, baddr);
332 * Wait for the adapter to be up and running.
334 if (!(status & KERNEL_UP_AND_RUNNING))
343 * aac_rkt_init - initialize an i960 based AAC card
344 * @dev: device to configure
346 * Allocate and set up resources for the i960 based AAC variants. The
347 * device_interface in the commregion will be allocated and linked
348 * to the comm region.
351 int aac_rkt_init(struct aac_dev *dev)
354 unsigned long status;
362 * Map in the registers from the adapter.
364 if((dev->regs.rkt = ioremap((unsigned long)dev->scsi_host_ptr->base, 8192))==NULL)
366 printk(KERN_WARNING "aacraid: unable to map i960.\n" );
370 * Check to see if the board failed any self tests.
372 if (rkt_readl(dev, MUnit.OMRx[0]) & SELF_TEST_FAILED) {
373 printk(KERN_ERR "%s%d: adapter self-test failed.\n", dev->name, instance);
377 * Check to see if the monitor panic'd while booting.
379 if (rkt_readl(dev, MUnit.OMRx[0]) & MONITOR_PANIC) {
380 printk(KERN_ERR "%s%d: adapter monitor panic.\n", dev->name, instance);
384 * Check to see if the board panic'd while booting.
386 if (rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_PANIC) {
387 printk(KERN_ERR "%s%d: adapter kernel panic'd.\n", dev->name, instance);
392 * Wait for the adapter to be up and running. Wait up to 3 minutes
394 while (!(rkt_readl(dev, MUnit.OMRx[0]) & KERNEL_UP_AND_RUNNING))
396 if(time_after(jiffies, start+180*HZ))
398 status = rkt_readl(dev, MUnit.OMRx[0]);
399 printk(KERN_ERR "%s%d: adapter kernel failed to start, init status = %lx.\n",
400 dev->name, instance, status);
403 set_current_state(TASK_UNINTERRUPTIBLE);
406 if (request_irq(dev->scsi_host_ptr->irq, aac_rkt_intr, SA_SHIRQ|SA_INTERRUPT, "aacraid", (void *)dev)<0)
408 printk(KERN_ERR "%s%d: Interrupt unavailable.\n", name, instance);
412 * Fill in the function dispatch table.
414 dev->a_ops.adapter_interrupt = aac_rkt_interrupt_adapter;
415 dev->a_ops.adapter_notify = aac_rkt_notify_adapter;
416 dev->a_ops.adapter_sync_cmd = rkt_sync_cmd;
417 dev->a_ops.adapter_check_health = aac_rkt_check_health;
419 if (aac_init_adapter(dev) == NULL)
422 * Start any kernel threads needed
424 dev->thread_pid = kernel_thread((int (*)(void *))aac_command_thread, dev, 0);
425 if(dev->thread_pid < 0)
427 printk(KERN_ERR "aacraid: Unable to create rkt thread.\n");
431 * Tell the adapter that all is configured, and it can start
434 aac_rkt_start_adapter(dev);
441 free_irq(dev->scsi_host_ptr->irq, (void *)dev);
444 iounmap(dev->regs.rkt);