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->aif_base_va = (struct hw_fib *)base;
86 init->AdapterFibsVirtualAddress = cpu_to_le32(0);
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 * FIXME: this assumes the memory is mapped zero->n, which isnt
99 * always true on real computers.
101 if ((num_physpages << (PAGE_SHIFT - 12)) <= AAC_MAX_HOSTPHYSMEMPAGES) {
102 init->HostPhysMemPages =
103 cpu_to_le32(num_physpages << (PAGE_SHIFT-12));
105 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
110 * Increment the base address by the amount already used
112 base = base + fibsize + sizeof(struct aac_init);
113 phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init));
115 * Align the beginning of Headers to commalign
117 align = (commalign - ((unsigned long)(base) & (commalign - 1)));
121 * Fill in addresses of the Comm Area Headers and Queues
124 init->CommHeaderAddress = cpu_to_le32((u32)phys);
126 * Increment the base address by the size of the CommArea
128 base = base + commsize;
129 phys = phys + commsize;
131 * Place the Printf buffer area after the Fast I/O comm area.
133 dev->printfbuf = (void *)base;
134 init->printfbuf = cpu_to_le32(phys);
135 init->printfbufsiz = cpu_to_le32(printfbufsiz);
136 memset(base, 0, printfbufsiz);
140 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
144 INIT_LIST_HEAD(&q->pendingq);
145 init_waitqueue_head(&q->cmdready);
146 INIT_LIST_HEAD(&q->cmdq);
147 init_waitqueue_head(&q->qfull);
148 spin_lock_init(&q->lockdata);
149 q->lock = &q->lockdata;
150 q->headers.producer = mem;
151 q->headers.consumer = mem+1;
152 *(q->headers.producer) = cpu_to_le32(qsize);
153 *(q->headers.consumer) = cpu_to_le32(qsize);
158 * aac_send_shutdown - shutdown an adapter
159 * @dev: Adapter to shutdown
161 * This routine will send a VM_CloseAll (shutdown) request to the adapter.
164 int aac_send_shutdown(struct aac_dev * dev)
167 struct aac_close *cmd;
170 fibctx = fib_alloc(dev);
173 cmd = (struct aac_close *) fib_data(fibctx);
175 cmd->command = cpu_to_le32(VM_CloseAll);
176 cmd->cid = cpu_to_le32(0xffffffff);
178 status = fib_send(ContainerCommand,
180 sizeof(struct aac_close),
186 fib_complete(fibctx);
192 * aac_comm_init - Initialise FSA data structures
193 * @dev: Adapter to initialise
195 * Initializes the data structures that are required for the FSA commuication
196 * interface to operate.
198 * 1 - if we were able to init the commuication interface.
199 * 0 - If there were errors initing. This is a fatal error.
202 int aac_comm_init(struct aac_dev * dev)
204 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
205 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
207 struct aac_entry * queues;
209 struct aac_queue_block * comm = dev->queues;
211 * Now allocate and initialize the zone structures used as our
212 * pool of FIB context records. The size of the zone is based
213 * on the system memory size. We also initialize the mutex used
214 * to protect the zone.
216 spin_lock_init(&dev->fib_lock);
219 * Allocate the physically contigous space for the commuication
223 size = hdrsize + queuesize;
225 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
228 queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
230 /* Adapter to Host normal priority Command queue */
231 comm->queue[HostNormCmdQueue].base = queues;
232 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
233 queues += HOST_NORM_CMD_ENTRIES;
236 /* Adapter to Host high priority command queue */
237 comm->queue[HostHighCmdQueue].base = queues;
238 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
240 queues += HOST_HIGH_CMD_ENTRIES;
243 /* Host to adapter normal priority command queue */
244 comm->queue[AdapNormCmdQueue].base = queues;
245 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
247 queues += ADAP_NORM_CMD_ENTRIES;
250 /* host to adapter high priority command queue */
251 comm->queue[AdapHighCmdQueue].base = queues;
252 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
254 queues += ADAP_HIGH_CMD_ENTRIES;
257 /* adapter to host normal priority response queue */
258 comm->queue[HostNormRespQueue].base = queues;
259 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
260 queues += HOST_NORM_RESP_ENTRIES;
263 /* adapter to host high priority response queue */
264 comm->queue[HostHighRespQueue].base = queues;
265 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
267 queues += HOST_HIGH_RESP_ENTRIES;
270 /* host to adapter normal priority response queue */
271 comm->queue[AdapNormRespQueue].base = queues;
272 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
274 queues += ADAP_NORM_RESP_ENTRIES;
277 /* host to adapter high priority response queue */
278 comm->queue[AdapHighRespQueue].base = queues;
279 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
281 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
282 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
283 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
284 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
289 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
292 * Ok now init the communication subsystem
295 dev->queues = (struct aac_queue_block *) kmalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
296 if (dev->queues == NULL) {
297 printk(KERN_ERR "Error could not allocate comm region.\n");
300 memset(dev->queues, 0, sizeof(struct aac_queue_block));
302 if (aac_comm_init(dev)<0){
307 * Initialize the list of fibs
309 if(fib_setup(dev)<0){
314 INIT_LIST_HEAD(&dev->fib_list);
315 init_completion(&dev->aif_completion);