[deliverable/linux.git] / drivers / scsi / aacraid / comminit.c

/*
 *	Adaptec AAC series RAID controller driver
 *	(c) Copyright 2001 Red Hat Inc.
 *
 * based on the old aacraid driver that is..
 * Adaptec aacraid device driver for Linux.
 *
 * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * Module Name:
 *  comminit.c
 *
 * Abstract: This supports the initialization of the host adapter commuication interface.
 *    This is a platform dependent module for the pci cyclone board.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/blkdev.h>
#include <linux/completion.h>
#include <linux/mm.h>
#include <scsi/scsi_host.h>

#include "aacraid.h"

struct aac_common aac_config = {
	.irq_mod = 1
};

static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
{
	unsigned char *base;
	unsigned long size, align;
	const unsigned long fibsize = 4096;
	const unsigned long printfbufsiz = 256;
	struct aac_init *init;
	dma_addr_t phys;

	size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz;

 
	base = pci_alloc_consistent(dev->pdev, size, &phys);

	if(base == NULL)
	{
		printk(KERN_ERR "aacraid: unable to create mapping.\n");
		return 0;
	}
	dev->comm_addr = (void *)base;
	dev->comm_phys = phys;
	dev->comm_size = size;
	
	dev->init = (struct aac_init *)(base + fibsize);
	dev->init_pa = phys + fibsize;

	init = dev->init;

	init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
	if (dev->max_fib_size != sizeof(struct hw_fib))
		init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
	init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION);
	init->fsrev = cpu_to_le32(dev->fsrev);

	/*
	 *	Adapter Fibs are the first thing allocated so that they
	 *	start page aligned
	 */
	dev->aif_base_va = (struct hw_fib *)base;
	
	init->AdapterFibsVirtualAddress = 0;
	init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
	init->AdapterFibsSize = cpu_to_le32(fibsize);
	init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
	init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);

	init->InitFlags = 0;
	if (dev->comm_interface == AAC_COMM_MESSAGE) {
		init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
		dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
	}
	init->InitFlags |= cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
				       INITFLAGS_DRIVER_SUPPORTS_PM);
	init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
	init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
	init->MaxFibSize = cpu_to_le32(dev->max_fib_size);

	/*
	 * Increment the base address by the amount already used
	 */
	base = base + fibsize + sizeof(struct aac_init);
	phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init));
	/*
	 *	Align the beginning of Headers to commalign
	 */
	align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
	base = base + align;
	phys = phys + align;
	/*
	 *	Fill in addresses of the Comm Area Headers and Queues
	 */
	*commaddr = base;
	init->CommHeaderAddress = cpu_to_le32((u32)phys);
	/*
	 *	Increment the base address by the size of the CommArea
	 */
	base = base + commsize;
	phys = phys + commsize;
	/*
	 *	 Place the Printf buffer area after the Fast I/O comm area.
	 */
	dev->printfbuf = (void *)base;
	init->printfbuf = cpu_to_le32(phys);
	init->printfbufsiz = cpu_to_le32(printfbufsiz);
	memset(base, 0, printfbufsiz);
	return 1;
}
    
static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
{
	q->numpending = 0;
	q->dev = dev;
	init_waitqueue_head(&q->cmdready);
	INIT_LIST_HEAD(&q->cmdq);
	init_waitqueue_head(&q->qfull);
	spin_lock_init(&q->lockdata);
	q->lock = &q->lockdata;
	q->headers.producer = (__le32 *)mem;
	q->headers.consumer = (__le32 *)(mem+1);
	*(q->headers.producer) = cpu_to_le32(qsize);
	*(q->headers.consumer) = cpu_to_le32(qsize);
	q->entries = qsize;
}

/**
 *	aac_send_shutdown		-	shutdown an adapter
 *	@dev: Adapter to shutdown
 *
 *	This routine will send a VM_CloseAll (shutdown) request to the adapter.
 */

int aac_send_shutdown(struct aac_dev * dev)
{
	struct fib * fibctx;
	struct aac_close *cmd;
	int status;

	fibctx = aac_fib_alloc(dev);
	if (!fibctx)
		return -ENOMEM;
	aac_fib_init(fibctx);

	cmd = (struct aac_close *) fib_data(fibctx);

	cmd->command = cpu_to_le32(VM_CloseAll);
	cmd->cid = cpu_to_le32(0xffffffff);

	status = aac_fib_send(ContainerCommand,
			  fibctx,
			  sizeof(struct aac_close),
			  FsaNormal,
			  -2 /* Timeout silently */, 1,
			  NULL, NULL);

	if (status >= 0)
		aac_fib_complete(fibctx);
	aac_fib_free(fibctx);
	return status;
}

/**
 *	aac_comm_init	-	Initialise FSA data structures
 *	@dev:	Adapter to initialise
 *
 *	Initializes the data structures that are required for the FSA commuication
 *	interface to operate. 
 *	Returns
 *		1 - if we were able to init the commuication interface.
 *		0 - If there were errors initing. This is a fatal error.
 */
 
static int aac_comm_init(struct aac_dev * dev)
{
	unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
	unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
	u32 *headers;
	struct aac_entry * queues;
	unsigned long size;
	struct aac_queue_block * comm = dev->queues;
	/*
	 *	Now allocate and initialize the zone structures used as our 
	 *	pool of FIB context records.  The size of the zone is based
	 *	on the system memory size.  We also initialize the mutex used
	 *	to protect the zone.
	 */
	spin_lock_init(&dev->fib_lock);

	/*
	 *	Allocate the physically contigous space for the commuication
	 *	queue headers. 
	 */

	size = hdrsize + queuesize;

	if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
		return -ENOMEM;

	queues = (struct aac_entry *)(((ulong)headers) + hdrsize);

	/* Adapter to Host normal priority Command queue */ 
	comm->queue[HostNormCmdQueue].base = queues;
	aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
	queues += HOST_NORM_CMD_ENTRIES;
	headers += 2;

	/* Adapter to Host high priority command queue */
	comm->queue[HostHighCmdQueue].base = queues;
	aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
    
	queues += HOST_HIGH_CMD_ENTRIES;
	headers +=2;

	/* Host to adapter normal priority command queue */
	comm->queue[AdapNormCmdQueue].base = queues;
	aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
    
	queues += ADAP_NORM_CMD_ENTRIES;
	headers += 2;

	/* host to adapter high priority command queue */
	comm->queue[AdapHighCmdQueue].base = queues;
	aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
    
	queues += ADAP_HIGH_CMD_ENTRIES;
	headers += 2;

	/* adapter to host normal priority response queue */
	comm->queue[HostNormRespQueue].base = queues;
	aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
	queues += HOST_NORM_RESP_ENTRIES;
	headers += 2;

	/* adapter to host high priority response queue */
	comm->queue[HostHighRespQueue].base = queues;
	aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
   
	queues += HOST_HIGH_RESP_ENTRIES;
	headers += 2;

	/* host to adapter normal priority response queue */
	comm->queue[AdapNormRespQueue].base = queues;
	aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);

	queues += ADAP_NORM_RESP_ENTRIES;
	headers += 2;
	
	/* host to adapter high priority response queue */ 
	comm->queue[AdapHighRespQueue].base = queues;
	aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);

	comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
	comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
	comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
	comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;

	return 0;
}

struct aac_dev *aac_init_adapter(struct aac_dev *dev)
{
	u32 status[5];
	struct Scsi_Host * host = dev->scsi_host_ptr;

	/*
	 *	Check the preferred comm settings, defaults from template.
	 */
	dev->max_fib_size = sizeof(struct hw_fib);
	dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
		- sizeof(struct aac_fibhdr)
		- sizeof(struct aac_write) + sizeof(struct sgentry))
			/ sizeof(struct sgentry);
	dev->comm_interface = AAC_COMM_PRODUCER;
	dev->raw_io_64 = 0;
	if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
		0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
	 		(status[0] == 0x00000001)) {
		if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
			dev->raw_io_64 = 1;
		if (dev->a_ops.adapter_comm &&
		    (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM)))
			dev->comm_interface = AAC_COMM_MESSAGE;
		if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
		    (status[2] > dev->base_size)) {
			aac_adapter_ioremap(dev, 0);
			dev->base_size = status[2];
			if (aac_adapter_ioremap(dev, status[2])) {
				/* remap failed, go back ... */
				dev->comm_interface = AAC_COMM_PRODUCER;
				if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
					printk(KERN_WARNING
					  "aacraid: unable to map adapter.\n");
					return NULL;
				}
			}
		}
	}
	if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
	  0, 0, 0, 0, 0, 0,
	  status+0, status+1, status+2, status+3, status+4))
	 && (status[0] == 0x00000001)) {
		/*
		 *	status[1] >> 16		maximum command size in KB
		 *	status[1] & 0xFFFF	maximum FIB size
		 *	status[2] >> 16		maximum SG elements to driver
		 *	status[2] & 0xFFFF	maximum SG elements from driver
		 *	status[3] & 0xFFFF	maximum number FIBs outstanding
		 */
		host->max_sectors = (status[1] >> 16) << 1;
		dev->max_fib_size = status[1] & 0xFFFF;
		host->sg_tablesize = status[2] >> 16;
		dev->sg_tablesize = status[2] & 0xFFFF;
		host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
		/*
		 *	NOTE:
		 *	All these overrides are based on a fixed internal
		 *	knowledge and understanding of existing adapters,
		 *	acbsize should be set with caution.
		 */
		if (acbsize == 512) {
			host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
			dev->max_fib_size = 512;
			dev->sg_tablesize = host->sg_tablesize
			  = (512 - sizeof(struct aac_fibhdr)
			    - sizeof(struct aac_write) + sizeof(struct sgentry))
			     / sizeof(struct sgentry);
			host->can_queue = AAC_NUM_IO_FIB;
		} else if (acbsize == 2048) {
			host->max_sectors = 512;
			dev->max_fib_size = 2048;
			host->sg_tablesize = 65;
			dev->sg_tablesize = 81;
			host->can_queue = 512 - AAC_NUM_MGT_FIB;
		} else if (acbsize == 4096) {
			host->max_sectors = 1024;
			dev->max_fib_size = 4096;
			host->sg_tablesize = 129;
			dev->sg_tablesize = 166;
			host->can_queue = 256 - AAC_NUM_MGT_FIB;
		} else if (acbsize == 8192) {
			host->max_sectors = 2048;
			dev->max_fib_size = 8192;
			host->sg_tablesize = 257;
			dev->sg_tablesize = 337;
			host->can_queue = 128 - AAC_NUM_MGT_FIB;
		} else if (acbsize > 0) {
			printk("Illegal acbsize=%d ignored\n", acbsize);
		}
	}
	{

		if (numacb > 0) {
			if (numacb < host->can_queue)
				host->can_queue = numacb;
			else
				printk("numacb=%d ignored\n", numacb);
		}
	}

	/*
	 *	Ok now init the communication subsystem
	 */

	dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
	if (dev->queues == NULL) {
		printk(KERN_ERR "Error could not allocate comm region.\n");
		return NULL;
	}

	if (aac_comm_init(dev)<0){
		kfree(dev->queues);
		return NULL;
	}
	/*
	 *	Initialize the list of fibs
	 */
	if (aac_fib_setup(dev) < 0) {
		kfree(dev->queues);
		return NULL;
	}
		
	INIT_LIST_HEAD(&dev->fib_list);

	return dev;
}
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* Adaptec AAC series RAID controller driver
fa195afe	3	* (c) Copyright 2001 Red Hat Inc.
1da177e4 LT	4	*
	5	* based on the old aacraid driver that is..
	6	* Adaptec aacraid device driver for Linux.
	7	*
4dfb7cbe	8	* Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
1da177e4 LT	9	*
	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)
	13	* any later version.
	14	*
	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.
	19	*
	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.
	23	*
	24	* Module Name:
	25	* comminit.c
	26	*
	27	* Abstract: This supports the initialization of the host adapter commuication interface.
	28	* This is a platform dependent module for the pci cyclone board.
	29	*
	30	*/
	31
	32	#include <linux/kernel.h>
	33	#include <linux/init.h>
	34	#include <linux/types.h>
1da177e4 LT	35	#include <linux/pci.h>
	36	#include <linux/spinlock.h>
	37	#include <linux/slab.h>
	38	#include <linux/blkdev.h>
	39	#include <linux/completion.h>
	40	#include <linux/mm.h>
7c00ffa3	41	#include <scsi/scsi_host.h>
1da177e4 LT	42
	43	#include "aacraid.h"
	44
bed30de4 MH	45	struct aac_common aac_config = {
	46	.irq_mod = 1
	47	};
1da177e4 LT	48
	49	static int aac_alloc_comm(struct aac_dev dev, void *commaddr, unsigned long commsize, unsigned long commalign)
	50	{
	51	unsigned char *base;
	52	unsigned long size, align;
7c00ffa3 MH	53	const unsigned long fibsize = 4096;
7c00ffa3 MH	54	const unsigned long printfbufsiz = 256;
1da177e4 LT	55	struct aac_init *init;
	56	dma_addr_t phys;
	57
	58	size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz;
	59
	60
	61	base = pci_alloc_consistent(dev->pdev, size, &phys);
	62
	63	if(base == NULL)
	64	{
	65	printk(KERN_ERR "aacraid: unable to create mapping.\n");
	66	return 0;
	67	}
	68	dev->comm_addr = (void *)base;
	69	dev->comm_phys = phys;
	70	dev->comm_size = size;
	71
	72	dev->init = (struct aac_init *)(base + fibsize);
	73	dev->init_pa = phys + fibsize;
	74
	75	init = dev->init;
	76
	77	init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
7c00ffa3 MH	78	if (dev->max_fib_size != sizeof(struct hw_fib))
7c00ffa3 MH	79	init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
1da177e4 LT	80	init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION);
	81	init->fsrev = cpu_to_le32(dev->fsrev);
	82
	83	/*
	84	* Adapter Fibs are the first thing allocated so that they
	85	* start page aligned
	86	*/
	87	dev->aif_base_va = (struct hw_fib *)base;
	88
	89	init->AdapterFibsVirtualAddress = 0;
	90	init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
	91	init->AdapterFibsSize = cpu_to_le32(fibsize);
	92	init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
12e9b5fb	93	init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
1da177e4	94
7c00ffa3	95	init->InitFlags = 0;
28713324	96	if (dev->comm_interface == AAC_COMM_MESSAGE) {
8e0c5ebd MH	97	init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
	98	dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
	99	}
655d722c MS	100	init->InitFlags \|= cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME \|
655d722c MS	101	INITFLAGS_DRIVER_SUPPORTS_PM);
7c00ffa3 MH	102	init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
	103	init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
	104	init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
1da177e4 LT	105
	106	/*
	107	* Increment the base address by the amount already used
	108	*/
	109	base = base + fibsize + sizeof(struct aac_init);
	110	phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init));
	111	/*
	112	* Align the beginning of Headers to commalign
	113	*/
142956af	114	align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
1da177e4 LT	115	base = base + align;
	116	phys = phys + align;
	117	/*
	118	* Fill in addresses of the Comm Area Headers and Queues
	119	*/
	120	*commaddr = base;
	121	init->CommHeaderAddress = cpu_to_le32((u32)phys);
	122	/*
	123	* Increment the base address by the size of the CommArea
	124	*/
	125	base = base + commsize;
	126	phys = phys + commsize;
	127	/*
	128	* Place the Printf buffer area after the Fast I/O comm area.
	129	*/
	130	dev->printfbuf = (void *)base;
	131	init->printfbuf = cpu_to_le32(phys);
	132	init->printfbufsiz = cpu_to_le32(printfbufsiz);
	133	memset(base, 0, printfbufsiz);
	134	return 1;
	135	}
	136
	137	static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
	138	{
	139	q->numpending = 0;
	140	q->dev = dev;
1da177e4 LT	141	init_waitqueue_head(&q->cmdready);
	142	INIT_LIST_HEAD(&q->cmdq);
	143	init_waitqueue_head(&q->qfull);
	144	spin_lock_init(&q->lockdata);
	145	q->lock = &q->lockdata;
56b58712 MH	146	q->headers.producer = (__le32 *)mem;
56b58712 MH	147	q->headers.consumer = (__le32 *)(mem+1);
1da177e4 LT	148	*(q->headers.producer) = cpu_to_le32(qsize);
	149	*(q->headers.consumer) = cpu_to_le32(qsize);
	150	q->entries = qsize;
	151	}
	152
	153	/**
	154	* aac_send_shutdown - shutdown an adapter
	155	* @dev: Adapter to shutdown
	156	*
	157	* This routine will send a VM_CloseAll (shutdown) request to the adapter.
	158	*/
	159
	160	int aac_send_shutdown(struct aac_dev * dev)
	161	{
	162	struct fib * fibctx;
	163	struct aac_close *cmd;
	164	int status;
	165
bfb35aa8	166	fibctx = aac_fib_alloc(dev);
7c00ffa3 MH	167	if (!fibctx)
7c00ffa3 MH	168	return -ENOMEM;
bfb35aa8	169	aac_fib_init(fibctx);
1da177e4 LT	170
	171	cmd = (struct aac_close *) fib_data(fibctx);
	172
	173	cmd->command = cpu_to_le32(VM_CloseAll);
	174	cmd->cid = cpu_to_le32(0xffffffff);
	175
bfb35aa8	176	status = aac_fib_send(ContainerCommand,
1da177e4 LT	177	fibctx,
	178	sizeof(struct aac_close),
	179	FsaNormal,
9203344c	180	-2 /* Timeout silently */, 1,
1da177e4 LT	181	NULL, NULL);
1da177e4 LT	182
90ee3466	183	if (status >= 0)
bfb35aa8 MH	184	aac_fib_complete(fibctx);
bfb35aa8 MH	185	aac_fib_free(fibctx);
1da177e4 LT	186	return status;
	187	}
	188
	189	/**
	190	* aac_comm_init - Initialise FSA data structures
	191	* @dev: Adapter to initialise
	192	*
	193	* Initializes the data structures that are required for the FSA commuication
	194	* interface to operate.
	195	* Returns
	196	* 1 - if we were able to init the commuication interface.
	197	* 0 - If there were errors initing. This is a fatal error.
	198	*/
	199
4833869e	200	static int aac_comm_init(struct aac_dev * dev)
1da177e4 LT	201	{
	202	unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
	203	unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
	204	u32 *headers;
	205	struct aac_entry * queues;
	206	unsigned long size;
	207	struct aac_queue_block * comm = dev->queues;
	208	/*
	209	* Now allocate and initialize the zone structures used as our
	210	* pool of FIB context records. The size of the zone is based
	211	* on the system memory size. We also initialize the mutex used
	212	* to protect the zone.
	213	*/
	214	spin_lock_init(&dev->fib_lock);
	215
	216	/*
	217	* Allocate the physically contigous space for the commuication
	218	* queue headers.
	219	*/
	220
	221	size = hdrsize + queuesize;
	222
	223	if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
	224	return -ENOMEM;
	225
	226	queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
	227
	228	/* Adapter to Host normal priority Command queue */
	229	comm->queue[HostNormCmdQueue].base = queues;
	230	aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
	231	queues += HOST_NORM_CMD_ENTRIES;
	232	headers += 2;
	233
	234	/* Adapter to Host high priority command queue */
	235	comm->queue[HostHighCmdQueue].base = queues;
	236	aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
	237
	238	queues += HOST_HIGH_CMD_ENTRIES;
	239	headers +=2;
	240
	241	/* Host to adapter normal priority command queue */
	242	comm->queue[AdapNormCmdQueue].base = queues;
	243	aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
	244
	245	queues += ADAP_NORM_CMD_ENTRIES;
	246	headers += 2;
	247
	248	/* host to adapter high priority command queue */
	249	comm->queue[AdapHighCmdQueue].base = queues;
	250	aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
	251
	252	queues += ADAP_HIGH_CMD_ENTRIES;
	253	headers += 2;
	254
	255	/* adapter to host normal priority response queue */
	256	comm->queue[HostNormRespQueue].base = queues;
	257	aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
	258	queues += HOST_NORM_RESP_ENTRIES;
	259	headers += 2;
	260
	261	/* adapter to host high priority response queue */
	262	comm->queue[HostHighRespQueue].base = queues;
	263	aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
	264
265	queues += HOST_HIGH_RESP_ENTRIES;
266	headers += 2;
267
268	/* host to adapter normal priority response queue */
269	comm->queue[AdapNormRespQueue].base = queues;
270	aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
271
272	queues += ADAP_NORM_RESP_ENTRIES;
273	headers += 2;
274
275	/* host to adapter high priority response queue */
276	comm->queue[AdapHighRespQueue].base = queues;
277	aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
278
279	comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
280	comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
281	comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
282	comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
283
284	return 0;
285	}
286
287	struct aac_dev aac_init_adapter(struct aac_dev dev)
288	{
7c00ffa3 MH	289	u32 status[5];
	290	struct Scsi_Host * host = dev->scsi_host_ptr;
	291
	292	/*
	293	* Check the preferred comm settings, defaults from template.
	294	*/
	295	dev->max_fib_size = sizeof(struct hw_fib);
	296	dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
	297	- sizeof(struct aac_fibhdr)
63a70eea MH	298	- sizeof(struct aac_write) + sizeof(struct sgentry))
63a70eea MH	299	/ sizeof(struct sgentry);
28713324	300	dev->comm_interface = AAC_COMM_PRODUCER;
7a8cf29d MH	301	dev->raw_io_64 = 0;
	302	if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
	303	0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
	304	(status[0] == 0x00000001)) {
a3940da5	305	if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
7a8cf29d	306	dev->raw_io_64 = 1;
28713324	307	if (dev->a_ops.adapter_comm &&
a3940da5	308	(status[1] & le32_to_cpu(AAC_OPT_NEW_COMM)))
28713324 MH	309	dev->comm_interface = AAC_COMM_MESSAGE;
	310	if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
	311	(status[2] > dev->base_size)) {
76a7f8fd	312	aac_adapter_ioremap(dev, 0);
8e0c5ebd	313	dev->base_size = status[2];
76a7f8fd	314	if (aac_adapter_ioremap(dev, status[2])) {
8e0c5ebd	315	/* remap failed, go back ... */
28713324	316	dev->comm_interface = AAC_COMM_PRODUCER;
76a7f8fd	317	if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
8e0c5ebd MH	318	printk(KERN_WARNING
	319	"aacraid: unable to map adapter.\n");
	320	return NULL;
	321	}
	322	}
	323	}
7a8cf29d	324	}
7c00ffa3 MH	325	if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
	326	0, 0, 0, 0, 0, 0,
	327	status+0, status+1, status+2, status+3, status+4))
	328	&& (status[0] == 0x00000001)) {
	329	/*
	330	* status[1] >> 16 maximum command size in KB
	331	* status[1] & 0xFFFF maximum FIB size
	332	* status[2] >> 16 maximum SG elements to driver
	333	* status[2] & 0xFFFF maximum SG elements from driver
	334	* status[3] & 0xFFFF maximum number FIBs outstanding
	335	*/
	336	host->max_sectors = (status[1] >> 16) << 1;
	337	dev->max_fib_size = status[1] & 0xFFFF;
	338	host->sg_tablesize = status[2] >> 16;
	339	dev->sg_tablesize = status[2] & 0xFFFF;
	340	host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
	341	/*
	342	* NOTE:
	343	* All these overrides are based on a fixed internal
	344	* knowledge and understanding of existing adapters,
	345	* acbsize should be set with caution.
	346	*/
	347	if (acbsize == 512) {
	348	host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
	349	dev->max_fib_size = 512;
	350	dev->sg_tablesize = host->sg_tablesize
	351	= (512 - sizeof(struct aac_fibhdr)
63a70eea MH	352	- sizeof(struct aac_write) + sizeof(struct sgentry))
63a70eea MH	353	/ sizeof(struct sgentry);
7c00ffa3 MH	354	host->can_queue = AAC_NUM_IO_FIB;
	355	} else if (acbsize == 2048) {
	356	host->max_sectors = 512;
	357	dev->max_fib_size = 2048;
	358	host->sg_tablesize = 65;
	359	dev->sg_tablesize = 81;
	360	host->can_queue = 512 - AAC_NUM_MGT_FIB;
	361	} else if (acbsize == 4096) {
	362	host->max_sectors = 1024;
	363	dev->max_fib_size = 4096;
	364	host->sg_tablesize = 129;
	365	dev->sg_tablesize = 166;
	366	host->can_queue = 256 - AAC_NUM_MGT_FIB;
	367	} else if (acbsize == 8192) {
	368	host->max_sectors = 2048;
	369	dev->max_fib_size = 8192;
	370	host->sg_tablesize = 257;
	371	dev->sg_tablesize = 337;
	372	host->can_queue = 128 - AAC_NUM_MGT_FIB;
	373	} else if (acbsize > 0) {
	374	printk("Illegal acbsize=%d ignored\n", acbsize);
	375	}
	376	}
	377	{
	378
	379	if (numacb > 0) {
	380	if (numacb < host->can_queue)
	381	host->can_queue = numacb;
	382	else
	383	printk("numacb=%d ignored\n", numacb);
	384	}
	385	}
	386
1da177e4 LT	387	/*
	388	* Ok now init the communication subsystem
	389	*/
	390
4dbc22d7	391	dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
1da177e4 LT	392	if (dev->queues == NULL) {
	393	printk(KERN_ERR "Error could not allocate comm region.\n");
	394	return NULL;
	395	}
1da177e4 LT	396
	397	if (aac_comm_init(dev)<0){
	398	kfree(dev->queues);
	399	return NULL;
	400	}
	401	/*
	402	* Initialize the list of fibs
	403	*/
bfb35aa8	404	if (aac_fib_setup(dev) < 0) {
1da177e4 LT	405	kfree(dev->queues);
	406	return NULL;
	407	}
	408
	409	INIT_LIST_HEAD(&dev->fib_list);
1da177e4 LT	410
	411	return dev;
	412	}
	413
	414