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: This supports the initialization of the host adapter commuication interface.
28 * This is a platform dependent module for the pci cyclone board.
32 #include <linux/kernel.h>
33 #include <linux/init.h>
34 #include <linux/types.h>
35 #include <linux/sched.h>
36 #include <linux/pci.h>
37 #include <linux/spinlock.h>
38 #include <linux/slab.h>
39 #include <linux/blkdev.h>
40 #include <linux/completion.h>
42 #include <asm/semaphore.h>
46 struct aac_common aac_config;
48 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
51 unsigned long size, align;
52 unsigned long fibsize = 4096;
53 unsigned long printfbufsiz = 256;
54 struct aac_init *init;
57 size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz;
60 base = pci_alloc_consistent(dev->pdev, size, &phys);
64 printk(KERN_ERR "aacraid: unable to create mapping.\n");
67 dev->comm_addr = (void *)base;
68 dev->comm_phys = phys;
69 dev->comm_size = size;
71 dev->init = (struct aac_init *)(base + fibsize);
72 dev->init_pa = phys + fibsize;
76 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
77 init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION);
78 init->fsrev = cpu_to_le32(dev->fsrev);
81 * Adapter Fibs are the first thing allocated so that they
84 dev->fib_base_va = (ulong)base;
86 init->AdapterFibsVirtualAddress = cpu_to_le32((u32)(ulong)phys);
87 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
88 init->AdapterFibsSize = cpu_to_le32(fibsize);
89 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
91 * number of 4k pages of host physical memory. The aacraid fw needs
92 * this number to be less than 4gb worth of pages. num_physpages is in
93 * system page units. New firmware doesn't have any issues with the
94 * mapping system, but older Firmware did, and had *troubles* dealing
95 * with the math overloading past 32 bits, thus we must limit this
98 if ((num_physpages << (PAGE_SHIFT - 12)) <= AAC_MAX_HOSTPHYSMEMPAGES) {
99 init->HostPhysMemPages =
100 cpu_to_le32(num_physpages << (PAGE_SHIFT-12));
102 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
107 * Increment the base address by the amount already used
109 base = base + fibsize + sizeof(struct aac_init);
110 phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init));
112 * Align the beginning of Headers to commalign
114 align = (commalign - ((unsigned long)(base) & (commalign - 1)));
118 * Fill in addresses of the Comm Area Headers and Queues
121 init->CommHeaderAddress = cpu_to_le32((u32)phys);
123 * Increment the base address by the size of the CommArea
125 base = base + commsize;
126 phys = phys + commsize;
128 * Place the Printf buffer area after the Fast I/O comm area.
130 dev->printfbuf = (void *)base;
131 init->printfbuf = cpu_to_le32(phys);
132 init->printfbufsiz = cpu_to_le32(printfbufsiz);
133 memset(base, 0, printfbufsiz);
137 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
141 INIT_LIST_HEAD(&q->pendingq);
142 init_waitqueue_head(&q->cmdready);
143 AAC_INIT_LIST_HEAD(&q->cmdq);
144 init_waitqueue_head(&q->qfull);
145 spin_lock_init(&q->lockdata);
146 q->lock = &q->lockdata;
147 q->headers.producer = mem;
148 q->headers.consumer = mem+1;
149 *(q->headers.producer) = cpu_to_le32(qsize);
150 *(q->headers.consumer) = cpu_to_le32(qsize);
155 * aac_send_shutdown - shutdown an adapter
156 * @dev: Adapter to shutdown
158 * This routine will send a VM_CloseAll (shutdown) request to the adapter.
161 int aac_send_shutdown(struct aac_dev * dev)
164 struct aac_close *cmd;
167 fibctx = fib_alloc(dev);
170 cmd = (struct aac_close *) fib_data(fibctx);
172 cmd->command = cpu_to_le32(VM_CloseAll);
173 cmd->cid = cpu_to_le32(0xffffffff);
175 status = fib_send(ContainerCommand,
177 sizeof(struct aac_close),
183 fib_complete(fibctx);
189 * aac_comm_init - Initialise FSA data structures
190 * @dev: Adapter to initialise
192 * Initializes the data structures that are required for the FSA commuication
193 * interface to operate.
195 * 1 - if we were able to init the commuication interface.
196 * 0 - If there were errors initing. This is a fatal error.
199 int aac_comm_init(struct aac_dev * dev)
201 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
202 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
204 struct aac_entry * queues;
206 struct aac_queue_block * comm = dev->queues;
208 * Now allocate and initialize the zone structures used as our
209 * pool of FIB context records. The size of the zone is based
210 * on the system memory size. We also initialize the mutex used
211 * to protect the zone.
213 spin_lock_init(&dev->fib_lock);
216 * Allocate the physically contigous space for the commuication
220 size = hdrsize + queuesize;
222 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
225 queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
227 /* Adapter to Host normal priority Command queue */
228 comm->queue[HostNormCmdQueue].base = queues;
229 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
230 queues += HOST_NORM_CMD_ENTRIES;
233 /* Adapter to Host high priority command queue */
234 comm->queue[HostHighCmdQueue].base = queues;
235 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
237 queues += HOST_HIGH_CMD_ENTRIES;
240 /* Host to adapter normal priority command queue */
241 comm->queue[AdapNormCmdQueue].base = queues;
242 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
244 queues += ADAP_NORM_CMD_ENTRIES;
247 /* host to adapter high priority command queue */
248 comm->queue[AdapHighCmdQueue].base = queues;
249 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
251 queues += ADAP_HIGH_CMD_ENTRIES;
254 /* adapter to host normal priority response queue */
255 comm->queue[HostNormRespQueue].base = queues;
256 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
257 queues += HOST_NORM_RESP_ENTRIES;
260 /* adapter to host high priority response queue */
261 comm->queue[HostHighRespQueue].base = queues;
262 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
264 queues += HOST_HIGH_RESP_ENTRIES;
267 /* host to adapter normal priority response queue */
268 comm->queue[AdapNormRespQueue].base = queues;
269 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
271 queues += ADAP_NORM_RESP_ENTRIES;
274 /* host to adapter high priority response queue */
275 comm->queue[AdapHighRespQueue].base = queues;
276 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
278 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
279 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
280 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
281 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
286 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
289 * Ok now init the communication subsystem
292 dev->queues = (struct aac_queue_block *) kmalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
293 if (dev->queues == NULL) {
294 printk(KERN_ERR "Error could not allocate comm region.\n");
297 memset(dev->queues, 0, sizeof(struct aac_queue_block));
299 if (aac_comm_init(dev)<0){
304 * Initialize the list of fibs
306 if(fib_setup(dev)<0){
311 INIT_LIST_HEAD(&dev->fib_list);
312 init_completion(&dev->aif_completion);