| /* |
| * Adaptec AAC series RAID controller driver |
| * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com> |
| * |
| * based on the old aacraid driver that is.. |
| * Adaptec aacraid device driver for Linux. |
| * |
| * Copyright (c) 2000 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/sched.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 <asm/semaphore.h> |
| |
| #include "aacraid.h" |
| |
| struct aac_common aac_config; |
| |
| 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)); |
| /* |
| * number of 4k pages of host physical memory. The aacraid fw needs |
| * this number to be less than 4gb worth of pages. num_physpages is in |
| * system page units. New firmware doesn't have any issues with the |
| * mapping system, but older Firmware did, and had *troubles* dealing |
| * with the math overloading past 32 bits, thus we must limit this |
| * field. |
| * |
| * This assumes the memory is mapped zero->n, which isnt |
| * always true on real computers. It also has some slight problems |
| * with the GART on x86-64. I've btw never tried DMA from PCI space |
| * on this platform but don't be suprised if its problematic. |
| */ |
| #ifndef CONFIG_GART_IOMMU |
| if ((num_physpages << (PAGE_SHIFT - 12)) <= AAC_MAX_HOSTPHYSMEMPAGES) { |
| init->HostPhysMemPages = |
| cpu_to_le32(num_physpages << (PAGE_SHIFT-12)); |
| } else |
| #endif |
| { |
| init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); |
| } |
| |
| init->InitFlags = 0; |
| 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 - ((unsigned long)(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_LIST_HEAD(&q->pendingq); |
| 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 = fib_alloc(dev); |
| if (!fibctx) |
| return -ENOMEM; |
| fib_init(fibctx); |
| |
| cmd = (struct aac_close *) fib_data(fibctx); |
| |
| cmd->command = cpu_to_le32(VM_CloseAll); |
| cmd->cid = cpu_to_le32(0xffffffff); |
| |
| status = fib_send(ContainerCommand, |
| fibctx, |
| sizeof(struct aac_close), |
| FsaNormal, |
| 1, 1, |
| NULL, NULL); |
| |
| if (status == 0) |
| fib_complete(fibctx); |
| 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 sgmap)) |
| / sizeof(struct sgmap); |
| 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 sgmap)) |
| / sizeof(struct sgmap); |
| 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 = (struct aac_queue_block *) kmalloc(sizeof(struct aac_queue_block), GFP_KERNEL); |
| if (dev->queues == NULL) { |
| printk(KERN_ERR "Error could not allocate comm region.\n"); |
| return NULL; |
| } |
| memset(dev->queues, 0, sizeof(struct aac_queue_block)); |
| |
| if (aac_comm_init(dev)<0){ |
| kfree(dev->queues); |
| return NULL; |
| } |
| /* |
| * Initialize the list of fibs |
| */ |
| if(fib_setup(dev)<0){ |
| kfree(dev->queues); |
| return NULL; |
| } |
| |
| INIT_LIST_HEAD(&dev->fib_list); |
| init_completion(&dev->aif_completion); |
| |
| return dev; |
| } |
| |
| |