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5222 5223 5224 5225 5226 5227 5228 5229 5230 5231 5232 5233 5234 5235 5236 5237 5238 5239 5240 5241 5242 5243 5244 5245 5246 5247 5248 5249 5250 5251 5252 5253 5254 5255 5256 5257 5258 5259 5260 5261 5262 5263 5264 5265 5266 5267 5268 5269 5270 5271 5272 5273 5274 5275 5276 5277 5278 5279 5280 5281 5282 5283 5284 5285 5286 5287 5288 5289 5290 5291 5292 5293 5294 5295 5296 5297 5298 5299 5300 5301 5302 5303 5304 5305 5306 | /*=================================================================== * * Linux MegaRAID device driver * * Copyright 2001 American Megatrends Inc. * * 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 of the License, or (at your option) any later version. * * Version : v1.18 (Oct 11, 2001) * * Description: Linux device driver for LSI Logic MegaRAID controller * * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490 * 493. * History: * * Version 0.90: * Original source contributed by Dell; integrated it into the kernel and * cleaned up some things. Added support for 438/466 controllers. * Version 0.91: * Aligned mailbox area on 16-byte boundary. * Added schedule() at the end to properly clean up. * Made improvements for conformity to linux driver standards. * * Version 0.92: * Added support for 2.1 kernels. * Reads from pci_dev struct, so it's not dependent on pcibios. * Added some missing virt_to_bus() translations. * Added support for SMP. * Changed global cli()'s to spinlocks for 2.1, and simulated * spinlocks for 2.0. * Removed setting of SA_INTERRUPT flag when requesting Irq. * * Version 0.92ac: * Small changes to the comments/formatting. Plus a couple of * added notes. Returned to the authors. No actual code changes * save printk levels. * 8 Oct 98 Alan Cox <alan.cox@linux.org> * * Merged with 2.1.131 source tree. * 12 Dec 98 K. Baranowski <kgb@knm.org.pl> * * Version 0.93: * Added support for vendor specific ioctl commands (M_RD_IOCTL_CMD+xxh) * Changed some fields in MEGARAID struct to better values. * Added signature check for Rp controllers under 2.0 kernels * Changed busy-wait loop to be time-based * Fixed SMP race condition in isr * Added kfree (sgList) on release * Added #include linux/version.h to megaraid.h for hosts.h * Changed max_id to represent max logical drives instead of targets. * * Version 0.94: * Got rid of some excess locking/unlocking * Fixed slight memory corruption problem while memcpy'ing into mailbox * Changed logical drives to be reported as luns rather than targets * Changed max_id to 16 since it is now max targets/chan again. * Improved ioctl interface for upcoming megamgr * * Version 0.95: * Fixed problem of queueing multiple commands to adapter; * still has some strange problems on some setups, so still * defaults to single. To enable parallel commands change * #define MULTI_IO in megaraid.h * Changed kmalloc allocation to be done in beginning. * Got rid of C++ style comments * * Version 0.96: * 762 fully supported. * * Version 0.97: * Changed megaraid_command to use wait_queue. * * Version 1.00: * Checks to see if an irq occurred while in isr, and runs through * routine again. * Copies mailbox to temp area before processing in isr * Added barrier() in busy wait to fix volatility bug * Uses separate list for freed Scbs, keeps track of cmd state * Put spinlocks around entire queue function for now... * Full multi-io commands working stablely without previous problems * Added skipXX LILO option for Madrona motherboard support * * Version 1.01: * Fixed bug in mega_cmd_done() for megamgr control commands, * the host_byte in the result code from the scsi request to * scsi midlayer is set to DID_BAD_TARGET when adapter's * returned codes are 0xF0 and 0xF4. * * Version 1.02: * Fixed the tape drive bug by extending the adapter timeout value * for passthrough command to 60 seconds in mega_build_cmd(). * * Version 1.03: * Fixed Madrona support. * Changed the adapter timeout value from 60 sec in 1.02 to 10 min * for bigger and slower tape drive. * Added driver version printout at driver loadup time * * Version 1.04 * Added code for 40 ld FW support. * Added new ioctl command 0x81 to support NEW_READ/WRITE_CONFIG with * data area greater than 4 KB, which is the upper bound for data * tranfer through scsi_ioctl interface. * The additional 32 bit field for 64bit address in the newly defined * mailbox64 structure is set to 0 at this point. * * Version 1.05 * Changed the queing implementation for handling SCBs and completed * commands. * Added spinlocks in the interrupt service routine to enable the driver * function in the SMP environment. * Fixed the problem of unnecessary aborts in the abort entry point, which * also enables the driver to handle large amount of I/O requests for * long duration of time. * Version 1.06 * Intel Release * Version 1.07 * Removed the usage of uaccess.h file for kernel versions less than * 2.0.36, as this file is not present in those versions. * * Version 108 * Modified mega_ioctl so that 40LD megamanager would run * Made some changes for 2.3.XX compilation , esp wait structures * Code merge between 1.05 and 1.06 . * Bug fixed problem with ioctl interface for concurrency between * 8ld and 40ld firwmare * Removed the flawed semaphore logic for handling new config command * Added support for building own scatter / gather list for big user * mode buffers * Added /proc file system support ,so that information is available in * human readable format * * Version 1a08 * Changes for IA64 kernels. Checked for CONFIG_PROC_FS flag * * Version 1b08 * Include file changes. * Version 1b08b * Change PCI ID value for the 471 card, use #defines when searching * for megaraid cards. * * Version 1.10 * * I) Changes made to make following ioctl commands work in 0x81 interface * a)DCMD_DELETE_LOGDRV * b)DCMD_GET_DISK_CONFIG * c)DCMD_DELETE_DRIVEGROUP * d)NC_SUBOP_ENQUIRY3 * e)DCMD_CHANGE_LDNO * f)DCMD_CHANGE_LOOPID * g)DCMD_FC_READ_NVRAM_CONFIG * h)DCMD_WRITE_CONFIG * II) Added mega_build_kernel_sg function * III)Firmware flashing option added * * Version 1.10a * * I)Dell updates included in the source code. * Note: This change is not tested due to the unavailability of IA64 kernel * and it is in the #ifdef DELL_MODIFICATION macro which is not defined * * Version 1.10b * * I)In M_RD_IOCTL_CMD_NEW command the wrong way of copying the data * to the user address corrected * * Version 1.10c * * I) DCMD_GET_DISK_CONFIG opcode updated for the firmware changes. * * Version 1.11 * I) Version number changed from 1.10c to 1.11 * II) DCMD_WRITE_CONFIG(0x0D) command in the driver changed from * scatter/gather list mode to direct pointer mode.. * Fixed bug of undesirably detecting HP onboard controllers which * are disabled. * * Version 1.12 (Sep 21, 2000) * * I. Changes have been made for Dynamic DMA mapping in IA64 platform. * To enable all these changes define M_RD_DYNAMIC_DMA_SUPPORT in megaraid.h * II. Got rid of windows mode comments * III. Removed unwanted code segments * IV. Fixed bug of HP onboard controller information (commented with * MEGA_HP_FIX) * * Version 1a12 * I. reboot notifier and new ioctl changes ported from 1c09 * * Version 1b12 * I. Changes in new ioctl interface routines ( Nov 06, 2000 ) * * Version 1c12 * I. Changes in new ioctl interface routines ( Nov 07, 2000 ) * * Version 1d12 * I. Compilation error under kernel 2.4.0 for 32-bit machine in mega_ioctl * * Version 1e12, 1f12 * 1. Fixes for pci_map_single, pci_alloc_consistent along with mailbox * alignment * * Version 1.13beta * Added Support for Full 64bit address space support. If firmware * supports 64bit, it goes to 64 bit mode even on x86 32bit * systems. Data Corruption Issues while running on test9 kernel * on IA64 systems. This issue not seen on test11 on x86 system * * Version 1.13c * 1. Resolved Memory Leak when using M_RD_IOCTL_CMD interface * 2. Resolved Queuing problem when MailBox Blocks * 3. Added unregister_reboot_notifier support * * Version 1.13d * Experimental changes in interfacing with the controller in ISR * * Version 1.13e * Fixed Broken 2.2.XX compilation changes + misc changes * * Version 1.13f to 1.13i * misc changes + code clean up * Cleaned up the ioctl code and added set_mbox_xfer_addr() * Support for START_DEV (6) * * Version 1.13j * Moved some code to megaraid.h file, replaced some hard coded values * with respective macros. Changed some functions to static * * Version 1.13k * Only some idendation correction to 1.13j * * Version 1.13l , 1.13m, 1.13n, 1.13o * Minor Identation changes + misc changes * * Version 1.13q * Paded the new uioctl_t MIMD structure for maintaining alignment * and size across 32 / 64 bit platforms * Changed the way MIMD IOCTL interface used virt_to_bus() to use pci * memory location * * Version 1.13r * 2.4.xx SCSI Changes. * * Version 1.13s * Stats counter fixes * Temporary fix for some 64 bit firmwares in 2.4.XX kernels * * Version 1.13t * Support for 64bit version of READ/WRITE/VIEW DISK CONFIG * * Version 1.14 * Did away with MEGADEV_IOCTL flag. It is now standard part of driver * without need for a special #define flag * Disabled old scsi ioctl path for kernel versions > 2.3.xx. This is due * to the nature in which the new scsi code queues a new scsi command to * controller during SCSI IO Completion * Driver now checks for sub-system vendor id before taking ownership of * the controller * * Version 1.14a * Added Host re-ordering * * Version 1.14b * Corrected some issue which caused the older cards not to work * * Version 1.14c * IOCTL changes for not handling the non-64bit firmwares under 2.4.XX * kernel * * Version 1.14d * Fixed Various MIMD Synchronization Issues * * Version 1.14e * Fixed the error handling during card initialization * * Version 1.14f * Multiple invocations of mimd phase I ioctl stalls the cpu. Replaced * spinlock with semaphore(mutex) * * Version 1.14g * Fixed running out of scbs issues while running MIMD apps under heavy IO * * Version 1.14g-ac - 02/03/01 * Reformatted to Linux format so I could compare to old one and cross * check bug fixes * Re fixed the assorted missing 'static' cases * Removed some unneeded version checks * Cleaned up some of the VERSION checks in the code * Left 2.0 support but removed 2.1.x support. * Collected much of the compat glue into one spot * * Version 1.14g-ac2 - 22/03/01 * Fixed a non obvious dereference after free in the driver unload path * * Version 1.14i * changes for making 32bit application run on IA64 * * Version 1.14j * Tue Mar 13 14:27:54 EST 2001 - AM * Changes made in the driver to be able to run applications if the * system has memory >4GB. * * * Version 1.14k * Thu Mar 15 18:38:11 EST 2001 - AM * * Firmware version check removed if subsysid==0x1111 and * subsysvid==0x1111, since its not yet initialized. * * changes made to correctly calculate the base in mega_findCard. * * Driver informational messages now appear on the console as well as * with dmesg * * Older ioctl interface is returned failure on newer(2.4.xx) kernels. * * Inclusion of "modversions.h" is still a debatable question. It is * included anyway with this release. * * Version 1.14l * Mon Mar 19 17:39:46 EST 2001 - AM * * Assorted changes to remove compilation error in 1.14k when compiled * with kernel < 2.4.0 * * Version 1.14m * Tue Mar 27 12:09:22 EST 2001 - AM * * Added support for extended CDBs ( > 10 bytes ) and OBDR ( One Button * Disaster Recovery ) feature. * * * Version 1.14n * Tue Apr 10 14:28:13 EDT 2001 - AM * * "modeversions.h" is no longer included in the code. * 2.4.xx style mutex initialization used for older kernels also * * Version 1.14o * Wed Apr 18 17:47:26 EDT 2001 - PJ * * Before returning status for 'inquiry', we first check if request buffer * is SG list, and then return appropriate status * * Version 1.14p * Wed Apr 25 13:44:48 EDT 2001 - PJ * * SCSI result made appropriate in case of check conditions for extended * passthru commands * * Do not support lun >7 for physically accessed devices * * * Version 1.15 * Thu Apr 19 09:38:38 EDT 2001 - AM * * 1.14l rollover to 1.15 - merged with main trunk after 1.15d * * Version 1.15b * Wed May 16 20:10:01 EDT 2001 - AM * * "modeversions.h" is no longer included in the code. * 2.4.xx style mutex initialization used for older kernels also * Brought in-sync with Alan's changes in 2.4.4 * Note: 1.15a is on OBDR branch(main trunk), and is not merged with yet. * * Version 1.15c * Mon May 21 23:10:42 EDT 2001 - AM * * ioctl interface uses 2.4.x conforming pci dma calls * similar calls used for older kernels * * Version 1.15d * Wed May 30 17:30:41 EDT 2001 - AM * * NULL is not a valid first argument for pci_alloc_consistent() on * IA64(2.4.3-2.10.1). Code shuffling done in ioctl interface to get * "pci_dev" before making calls to pci interface routines. * * Version 1.16pre * Fri Jun 1 19:40:48 EDT 2001 - AM * * 1.14p and 1.15d merged * ROMB support added * * Version 1.16-pre1 * Mon Jun 4 15:01:01 EDT 2001 - AM * * Non-ROMB firmware do no DMA support 0xA9 command. Value 0xFF * (all channels are raid ) is chosen for those firmware. * * Version 1.16-pre2 * Mon Jun 11 18:15:31 EDT 2001 - AM * * Changes for boot from any logical drive * * Version 1.16 * Tue Jun 26 18:07:02 EDT 2001 - AM * * branched at 1.14p * * Check added for HP 1M/2M controllers if having firmware H.01.07 or * H.01.08. If found, disable 64 bit support since these firmware have * limitations for 64 bit addressing * * * Version 1.17 * Thu Jul 12 11:14:09 EDT 2001 - AM * * 1.16pre2 and 1.16 merged. * * init_MUTEX and init_MUTEX_LOCKED are defined in 2.2.19. Pre-processor * statements are added for them * * Linus's 2.4.7pre3 kernel introduces a new field 'max_sectors' in Scsi_Host * structure, to improve IO performance. * * * Version 1.17a * Fri Jul 13 18:44:01 EDT 2001 - AM * * Starting from kernel 2.4.x, LUN is not < 8 - following SCSI-III. So to have * our current formula working to calculate logical drive number, return * failure for LUN > 7 * * * Version 1.17b * Mon Jul 30 19:24:02 EDT 2001 - AM * * Added support for random deletion of logical drives * * Version 1.17c * Tue Sep 25 09:37:49 EDT 2001 - Atul Mukker <atulm@lsil.com> * * With single and dual channel controllers, some virtaul channels are * displayed negative. * * Version 1.17a-ac * Mon Aug 6 14:59:29 BST 2001 - "Michael Johnson" <johnsom@home.com> * * Make the HP print formatting and check for buggy firmware runtime not * ifdef dependant. * * * Version 1.17d * Thu Oct 11 10:48:45 EDT 2001 - Atul Mukker <atulm@lsil.com> * * Driver 1.17c oops when loaded without controller. * * Special case for "use_sg == 1" removed while building the scatter gather * list. * * Version 1.18 * Thu Oct 11 15:02:53 EDT 2001 - Atul Mukker <atulm@lsil.com> * * References to AMI have been changed to LSI Logic. * * * BUGS: * Some older 2.1 kernels (eg. 2.1.90) have a bug in pci.c that * fails to detect the controller as a pci device on the system. * * Timeout period for upper scsi layer, i.e. SD_TIMEOUT in * /drivers/scsi/sd.c, is too short for this controller. SD_TIMEOUT * value must be increased to (30 * HZ) otherwise false timeouts * will occur in the upper layer. * * Never set skip_id. The existing PCI code the megaraid uses fails * to properly check the vendor subid in some cases. Setting this then * makes it steal other i960's and crashes some boxes * * Far too many ifdefs for versions. * *===================================================================*/ #include <linux/config.h> #include <linux/version.h> #include <linux/module.h> #include <linux/types.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/kernel.h> #include <linux/ioport.h> #include <linux/fcntl.h> #include <linux/delay.h> #include <linux/pci.h> #include <linux/proc_fs.h> #include <linux/blk.h> #include <linux/wait.h> #include <linux/tqueue.h> #include <linux/interrupt.h> #include <linux/mm.h> #include <asm/pgtable.h> #include <linux/sched.h> #include <linux/stat.h> #include <linux/slab.h> /* for kmalloc() */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) /* 0x20100 */ #include <linux/bios32.h> #else #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) /* 0x20300 */ #include <asm/spinlock.h> #else #include <linux/spinlock.h> #endif #endif #include <asm/io.h> #include <asm/irq.h> #if LINUX_VERSION_CODE > KERNEL_VERSION(2,0,24) /* 0x020024 */ #include <asm/uaccess.h> #endif /* * These header files are required for Shutdown Notification routines */ #include <linux/notifier.h> #include <linux/reboot.h> #include <linux/init.h> #include "sd.h" #include "scsi.h" #include "hosts.h" #include "megaraid.h" /* *================================================================ * #Defines *================================================================ */ #define MAX_SERBUF 160 #define COM_BASE 0x2f8 static ulong RDINDOOR (mega_host_config * megaCfg) { return readl (megaCfg->base + 0x20); } static void WRINDOOR (mega_host_config * megaCfg, ulong value) { writel (value, megaCfg->base + 0x20); } static ulong RDOUTDOOR (mega_host_config * megaCfg) { return readl (megaCfg->base + 0x2C); } static void WROUTDOOR (mega_host_config * megaCfg, ulong value) { writel (value, megaCfg->base + 0x2C); } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) /* 0x020200 */ #include <linux/smp.h> #define cpuid smp_processor_id() #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,4) #define scsi_set_pci_device(x,y) #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* 0x020400 */ /* * Linux 2.4 and higher * * No driver private lock * Use the io_request_lock not cli/sti * queue task is a simple api without irq forms */ MODULE_AUTHOR ("LSI Logic Corporation"); MODULE_DESCRIPTION ("LSI Logic MegaRAID driver"); MODULE_LICENSE ("GPL"); #define DRIVER_LOCK_T #define DRIVER_LOCK_INIT(p) #define DRIVER_LOCK(p) #define DRIVER_UNLOCK(p) #define IO_LOCK_T unsigned long io_flags = 0 #define IO_LOCK spin_lock_irqsave(&io_request_lock,io_flags); #define IO_UNLOCK spin_unlock_irqrestore(&io_request_lock,io_flags); #define queue_task_irq(a,b) queue_task(a,b) #define queue_task_irq_off(a,b) queue_task(a,b) #elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) /* 0x020200 */ /* * Linux 2.2 and higher * * No driver private lock * Use the io_request_lock not cli/sti * No pci region api * queue_task is now a single simple API */ static char kernel_version[] = UTS_RELEASE; MODULE_AUTHOR ("LSI Logic Corporation"); MODULE_DESCRIPTION ("LSI Logic MegaRAID driver"); #define DRIVER_LOCK_T #define DRIVER_LOCK_INIT(p) #define DRIVER_LOCK(p) #define DRIVER_UNLOCK(p) #define IO_LOCK_T unsigned long io_flags = 0 #define IO_LOCK spin_lock_irqsave(&io_request_lock,io_flags); #define IO_UNLOCK spin_unlock_irqrestore(&io_request_lock,io_flags); #define pci_free_consistent(a,b,c,d) #define pci_unmap_single(a,b,c,d) #define pci_enable_device(x) (0) #define queue_task_irq(a,b) queue_task(a,b) #define queue_task_irq_off(a,b) queue_task(a,b) #if LINUX_VERSION_CODE < KERNEL_VERSION(2,2,19) /* 0x020219 */ #define init_MUTEX_LOCKED(x) (*(x)=MUTEX_LOCKED) #define init_MUTEX(x) (*(x)=MUTEX) #define DECLARE_WAIT_QUEUE_HEAD(x) struct wait_queue *x = NULL #endif #else /* * Linux 2.0 macros. Here we have to provide some of our own * functionality. We also only work little endian 32bit. * Again no pci_alloc/free api * IO_LOCK/IO_LOCK_T were never used in 2.0 so now are empty */ #define cpuid 0 #define DRIVER_LOCK_T long cpu_flags; #define DRIVER_LOCK_INIT(p) #define DRIVER_LOCK(p) \ save_flags(cpu_flags); \ cli(); #define DRIVER_UNLOCK(p) \ restore_flags(cpu_flags); #define IO_LOCK_T #define IO_LOCK(p) #define IO_UNLOCK(p) #define le32_to_cpu(x) (x) #define cpu_to_le32(x) (x) #define pci_free_consistent(a,b,c,d) #define pci_unmap_single(a,b,c,d) #define init_MUTEX_LOCKED(x) (*(x)=MUTEX_LOCKED) #define init_MUTEX(x) (*(x)=MUTEX) #define pci_enable_device(x) (0) /* * 2.0 lacks spinlocks, iounmap/ioremap */ #define ioremap vremap #define iounmap vfree /* simulate spin locks */ typedef struct { volatile char lock; } spinlock_t; #define spin_lock_init(x) { (x)->lock = 0;} #define spin_lock_irqsave(x,flags) { while ((x)->lock) barrier();\ (x)->lock=1; save_flags(flags);\ cli();} #define spin_unlock_irqrestore(x,flags) { (x)->lock=0; restore_flags(flags);} #define DECLARE_WAIT_QUEUE_HEAD(x) struct wait_queue *x = NULL #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* 0x020400 */ #define dma_alloc_consistent pci_alloc_consistent #define dma_free_consistent pci_free_consistent #else #if LINUX_VERSION_CODE < KERNEL_VERSION(2,2,19) /* 0x020219 */ typedef unsigned long dma_addr_t; #endif void *dma_alloc_consistent(void *, size_t, dma_addr_t *); void dma_free_consistent(void *, size_t, void *, dma_addr_t); int mega_get_order(int); int pow_2(int); #endif /* set SERDEBUG to 1 to enable serial debugging */ #define SERDEBUG 0 #if SERDEBUG static void ser_init (void); static void ser_puts (char *str); static void ser_putc (char c); static int ser_printk (const char *fmt, ...); #endif #ifdef CONFIG_PROC_FS #define COPY_BACK if (offset > megaCfg->procidx) { \ *eof = TRUE; \ megaCfg->procidx = 0; \ megaCfg->procbuf[0] = 0; \ return 0;} \ if ((count + offset) > megaCfg->procidx) { \ count = megaCfg->procidx - offset; \ *eof = TRUE; } \ memcpy(page, &megaCfg->procbuf[offset], count); \ megaCfg->procidx = 0; \ megaCfg->procbuf[0] = 0; #endif /* * ================================================================ * Global variables *================================================================ */ /* Use "megaraid=skipXX" as LILO option to prohibit driver from scanning XX scsi id on each channel. Used for Madrona motherboard, where SAF_TE processor id cannot be scanned */ static char *megaraid; #if LINUX_VERSION_CODE > KERNEL_VERSION(2,1,0) /* 0x20100 */ #ifdef MODULE MODULE_PARM (megaraid, "s"); #endif #endif static int skip_id = -1; static int numCtlrs = 0; static mega_host_config *megaCtlrs[FC_MAX_CHANNELS] = { 0 }; static struct proc_dir_entry *mega_proc_dir_entry; #if DEBUG static u32 maxCmdTime = 0; #endif static mega_scb *pLastScb = NULL; static struct notifier_block mega_notifier = { megaraid_reboot_notify, NULL, 0 }; /* For controller re-ordering */ struct mega_hbas mega_hbas[MAX_CONTROLLERS]; /* * The File Operations structure for the serial/ioctl interface of the driver */ /* For controller re-ordering */ static struct file_operations megadev_fops = { ioctl:megadev_ioctl_entry, open:megadev_open, release:megadev_close, }; /* * Array to structures for storing the information about the controllers. This * information is sent to the user level applications, when they do an ioctl * for this information. */ static struct mcontroller mcontroller[MAX_CONTROLLERS]; /* The current driver version */ static u32 driver_ver = 114; /* major number used by the device for character interface */ static int major; static struct semaphore mimd_ioctl_sem; static struct semaphore mimd_entry_mtx; #if SERDEBUG volatile static spinlock_t serial_lock; #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0) /* 0x20300 */ static struct proc_dir_entry proc_scsi_megaraid = { PROC_SCSI_MEGARAID, 8, "megaraid", S_IFDIR | S_IRUGO | S_IXUGO, 2 }; #endif #ifdef CONFIG_PROC_FS extern struct proc_dir_entry proc_root; #endif static char mega_ch_class; /* channels are raid or scsi */ #define IS_RAID_CH(ch) ( (mega_ch_class >> (ch)) & 0x01 ) #if SERDEBUG static char strbuf[MAX_SERBUF + 1]; static void ser_init (void) { unsigned port = COM_BASE; outb (0x80, port + 3); outb (0, port + 1); /* 9600 Baud, if 19200: outb(6,port) */ outb (12, port); outb (3, port + 3); outb (0, port + 1); } static void ser_puts (char *str) { char *ptr; ser_init (); for (ptr = str; *ptr; ++ptr) ser_putc (*ptr); } static void ser_putc (char c) { unsigned port = COM_BASE; while ((inb (port + 5) & 0x20) == 0) ; outb (c, port); if (c == 0x0a) { while ((inb (port + 5) & 0x20) == 0) ; outb (0x0d, port); } } static int ser_printk (const char *fmt, ...) { va_list args; int i; long flags; spin_lock_irqsave (&serial_lock, flags); va_start (args, fmt); i = vsprintf (strbuf, fmt, args); ser_puts (strbuf); va_end (args); spin_unlock_irqrestore (&serial_lock, flags); return i; } #define TRACE(a) { ser_printk a;} #else #define TRACE(A) #endif #define TRACE1(a) static void callDone (Scsi_Cmnd * SCpnt) { if (SCpnt->result) { TRACE (("*** %.08lx %.02x <%d.%d.%d> = %x\n", SCpnt->serial_number, SCpnt->cmnd[0], SCpnt->channel, SCpnt->target, SCpnt->lun, SCpnt->result)); } SCpnt->scsi_done (SCpnt); } /*------------------------------------------------------------------------- * * Local functions * *-------------------------------------------------------------------------*/ /*======================= * Free a SCB structure *======================= */ static void mega_freeSCB (mega_host_config * megaCfg, mega_scb * pScb) { mega_scb *pScbtmp; if ((pScb == NULL) || (pScb->idx >= 0xFE)) { return; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) switch (pScb->dma_type) { case M_RD_DMA_TYPE_NONE: break; case M_RD_PTHRU_WITH_BULK_DATA: pci_unmap_single (megaCfg->dev, pScb->dma_h_bulkdata, pScb->pthru->dataxferlen, pScb->dma_direction); break; case M_RD_EPTHRU_WITH_BULK_DATA: pci_unmap_single (megaCfg->dev, pScb->dma_h_bulkdata, pScb->epthru->dataxferlen, pScb->dma_direction); break; case M_RD_PTHRU_WITH_SGLIST: { int count; for (count = 0; count < pScb->sglist_count; count++) { pci_unmap_single (megaCfg->dev, pScb->dma_h_sglist[count], pScb->sgList[count].length, pScb->dma_direction); } break; } case M_RD_BULK_DATA_ONLY: pci_unmap_single (megaCfg->dev, pScb->dma_h_bulkdata, pScb->iDataSize, pScb->dma_direction); break; case M_RD_SGLIST_ONLY: pci_unmap_sg (megaCfg->dev, pScb->SCpnt->request_buffer, pScb->SCpnt->use_sg, pScb->dma_direction); break; default: break; } #endif /* Unlink from pending queue */ if (pScb == megaCfg->qPendingH) { if (megaCfg->qPendingH == megaCfg->qPendingT) megaCfg->qPendingH = megaCfg->qPendingT = NULL; else megaCfg->qPendingH = megaCfg->qPendingH->next; megaCfg->qPcnt--; } else { for (pScbtmp = megaCfg->qPendingH; pScbtmp; pScbtmp = pScbtmp->next) { if (pScbtmp->next == pScb) { pScbtmp->next = pScb->next; if (pScb == megaCfg->qPendingT) { megaCfg->qPendingT = pScbtmp; } megaCfg->qPcnt--; break; } } } /* Link back into free list */ pScb->state = SCB_FREE; pScb->SCpnt = NULL; if (megaCfg->qFreeH == (mega_scb *) NULL) { megaCfg->qFreeH = megaCfg->qFreeT = pScb; } else { megaCfg->qFreeT->next = pScb; megaCfg->qFreeT = pScb; } megaCfg->qFreeT->next = NULL; megaCfg->qFcnt++; } /*=========================== * Allocate a SCB structure *=========================== */ static mega_scb *mega_allocateSCB (mega_host_config * megaCfg, Scsi_Cmnd * SCpnt) { mega_scb *pScb; /* Unlink command from Free List */ if ((pScb = megaCfg->qFreeH) != NULL) { megaCfg->qFreeH = pScb->next; megaCfg->qFcnt--; pScb->isrcount = jiffies; pScb->next = NULL; pScb->state = SCB_ACTIVE; pScb->SCpnt = SCpnt; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pScb->dma_type = M_RD_DMA_TYPE_NONE; #endif return pScb; } printk (KERN_WARNING "Megaraid: Could not allocate free SCB!!!\n"); return NULL; } /* Run through the list of completed requests and finish it */ static void mega_rundoneq (mega_host_config * megaCfg) { Scsi_Cmnd *SCpnt; while ((SCpnt = megaCfg->qCompletedH) != NULL) { megaCfg->qCompletedH = (Scsi_Cmnd *) SCpnt->host_scribble; megaCfg->qCcnt--; SCpnt->host_scribble = (unsigned char *) NULL; /* XC : sep 14 */ /* Callback */ callDone (SCpnt); } megaCfg->qCompletedH = megaCfg->qCompletedT = NULL; } /* * Runs through the list of pending requests * Assumes that mega_lock spin_lock has been acquired. */ static int mega_runpendq (mega_host_config * megaCfg) { mega_scb *pScb; int rc; /* Issue any pending commands to the card */ for (pScb = megaCfg->qPendingH; pScb; pScb = pScb->next) { if (pScb->state == SCB_ACTIVE) { if ((rc = megaIssueCmd (megaCfg, pScb->mboxData, pScb, 1)) == -1) return rc; } } return 0; } /* Add command to the list of completed requests */ static void mega_cmd_done (mega_host_config * megaCfg, mega_scb * pScb, int status) { int islogical; Scsi_Cmnd *SCpnt; mega_passthru *pthru; mega_ext_passthru *epthru; mega_mailbox *mbox; struct scatterlist *sgList; u8 c; if (pScb == NULL) { TRACE (("NULL pScb in mega_cmd_done!")); printk(KERN_CRIT "NULL pScb in mega_cmd_done!"); } SCpnt = pScb->SCpnt; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pthru = pScb->pthru; epthru = pScb->epthru; #else pthru = &pScb->pthru; epthru = &pScb->epthru; #endif mbox = (mega_mailbox *) & pScb->mboxData; if (SCpnt == NULL) { TRACE (("NULL SCpnt in mega_cmd_done!")); TRACE (("pScb->idx = ", pScb->idx)); TRACE (("pScb->state = ", pScb->state)); TRACE (("pScb->state = ", pScb->state)); panic(KERN_ERR "megaraid:Problem...!\n"); } islogical = ( (SCpnt->channel >= megaCfg->productInfo.SCSIChanPresent) && (SCpnt->channel <= megaCfg->host->max_channel) ); #if 0 islogical = (SCpnt->channel == megaCfg->host->max_channel); #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* Special Case to handle PassThrough->XferAddrress > 4GB */ switch (SCpnt->cmnd[0]) { case INQUIRY: case READ_CAPACITY: memcpy (SCpnt->request_buffer, pScb->bounce_buffer, SCpnt->request_bufflen); break; } #endif mega_freeSCB (megaCfg, pScb); /* * Do not return the presence of hard disk on the channel so, inquiry * sent, and returned data==hard disk or removable hard disk and not * logical, request should return failure! - PJ */ #if 0 if (SCpnt->cmnd[0] == INQUIRY && ((((u_char *) SCpnt->request_buffer)[0] & 0x1F) == TYPE_DISK) && !islogical) { status = 0xF0; } #endif if (SCpnt->cmnd[0] == INQUIRY && !islogical) { if ( SCpnt->use_sg ) { sgList = (struct scatterlist *)SCpnt->request_buffer; memcpy(&c, sgList[0].address, 0x1); } else { memcpy(&c, SCpnt->request_buffer, 0x1); } #if 0 if( (c & 0x1F ) == TYPE_DISK ) { status = 0xF0; } #endif if( IS_RAID_CH(SCpnt->channel) && ((c & 0x1F ) == TYPE_DISK) ) { status = 0xF0; } } /* clear result; otherwise, success returns corrupt value */ SCpnt->result = 0; if ((SCpnt->cmnd[0] & M_RD_IOCTL_CMD)) { /* i.e. ioctl cmd such as M_RD_IOCTL_CMD, M_RD_IOCTL_CMD_NEW of megamgr */ switch (status) { case 2: case 0xF0: case 0xF4: SCpnt->result = (DID_BAD_TARGET << 16) | status; break; default: SCpnt->result |= status; } /*end of switch */ } else { /* Convert MegaRAID status to Linux error code */ switch (status) { case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ SCpnt->result |= (DID_OK << 16); break; case 0x02: /* ERROR_ABORTED, i.e. SCSI_STATUS_CHECK_CONDITION */ /*set sense_buffer and result fields */ if (mbox->cmd == MEGA_MBOXCMD_PASSTHRU) { memcpy (SCpnt->sense_buffer, pthru->reqsensearea, 14); } else if (mbox->cmd == MEGA_MBOXCMD_EXTPASSTHRU) { SCpnt->result = (DRIVER_SENSE << 24) | (DID_OK << 16) | (CHECK_CONDITION < 1); memcpy( SCpnt->sense_buffer, epthru->reqsensearea, 14 ); SCpnt->result = (DRIVER_SENSE << 24) | (DID_OK << 16) | (CHECK_CONDITION < 1); /*SCpnt->result = (DRIVER_SENSE << 24) | (DID_ERROR << 16) | status;*/ } else { SCpnt->sense_buffer[0] = 0x70; SCpnt->sense_buffer[2] = ABORTED_COMMAND; SCpnt->result |= (CHECK_CONDITION << 1); } break; case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. SCSI_STATUS_BUSY */ SCpnt->result |= (DID_BUS_BUSY << 16) | status; break; default: SCpnt->result |= (DID_BAD_TARGET << 16) | status; break; } } /* Add Scsi_Command to end of completed queue */ if (megaCfg->qCompletedH == NULL) { megaCfg->qCompletedH = megaCfg->qCompletedT = SCpnt; } else { megaCfg->qCompletedT->host_scribble = (unsigned char *) SCpnt; megaCfg->qCompletedT = SCpnt; } megaCfg->qCompletedT->host_scribble = (unsigned char *) NULL; megaCfg->qCcnt++; } /*------------------------------------------------------------------- * * Build a SCB from a Scsi_Cmnd * * Returns a SCB pointer, or NULL * If NULL is returned, the scsi_done function MUST have been called * *-------------------------------------------------------------------*/ static mega_scb *mega_build_cmd (mega_host_config * megaCfg, Scsi_Cmnd * SCpnt) { mega_scb *pScb; mega_mailbox *mbox; mega_passthru *pthru; mega_ext_passthru *epthru; long seg; char islogical; int lun = SCpnt->lun; int max_lun; if ((SCpnt->cmnd[0] == MEGADEVIOC)) return megadev_doioctl (megaCfg, SCpnt); if ((SCpnt->cmnd[0] == M_RD_IOCTL_CMD) || (SCpnt->cmnd[0] == M_RD_IOCTL_CMD_NEW)) #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) return mega_ioctl (megaCfg, SCpnt); /* Handle IOCTL command */ #else { printk(KERN_WARNING "megaraid ioctl: older interface - " "not supported.\n"); return NULL; } #endif islogical = ( (SCpnt->channel >= megaCfg->productInfo.SCSIChanPresent) && (SCpnt->channel <= megaCfg->host->max_channel) ); #if 0 islogical = (IS_RAID_CH(SCpnt->channel) && /* virtual ch is raid - AM */ (SCpnt->channel == megaCfg->host->max_channel)); #endif if ( ! megaCfg->support_ext_cdb ) { if (!islogical && lun != 0) { SCpnt->result = (DID_BAD_TARGET << 16); callDone (SCpnt); return NULL; } } if (!islogical && SCpnt->target == skip_id) { SCpnt->result = (DID_BAD_TARGET << 16); callDone (SCpnt); return NULL; } if (islogical) { /* have just LUN 0 for each target on virtual channels */ if( SCpnt->lun != 0 ) { SCpnt->result = (DID_BAD_TARGET << 16); callDone (SCpnt); return NULL; } lun = mega_get_lun(megaCfg, SCpnt); max_lun = (megaCfg->flag & BOARD_40LD) ? FC_MAX_LOGICAL_DRIVES : MAX_LOGICAL_DRIVES; /* * max_lun increases by 0x80 if some logical drive was deleted. */ if(megaCfg->read_ldidmap) { max_lun += 0x80; } if( lun > max_lun ) { SCpnt->result = (DID_BAD_TARGET << 16); callDone (SCpnt); return NULL; } /* * If we have a logical drive with boot enabled, project it first */ if( megaCfg->boot_ldrv_enabled ) { if( lun == 0 ) { lun = megaCfg->boot_ldrv; } else { if( lun <= megaCfg->boot_ldrv ) { lun--; } } } } else { if ( lun > 7) { /* Do not support lun >7 for physically accessed devices */ SCpnt->result = (DID_BAD_TARGET << 16); callDone (SCpnt); return NULL; } } /*----------------------------------------------------- * * Logical drive commands * *-----------------------------------------------------*/ if (islogical) { switch (SCpnt->cmnd[0]) { case TEST_UNIT_READY: memset (SCpnt->request_buffer, 0, SCpnt->request_bufflen); SCpnt->result = (DID_OK << 16); callDone (SCpnt); return NULL; case MODE_SENSE: memset (SCpnt->request_buffer, 0, SCpnt->cmnd[4]); SCpnt->result = (DID_OK << 16); callDone (SCpnt); return NULL; case READ_CAPACITY: case INQUIRY: /* Allocate a SCB and initialize passthru */ if ((pScb = mega_allocateSCB (megaCfg, SCpnt)) == NULL) { SCpnt->result = (DID_ERROR << 16); callDone (SCpnt); return NULL; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pthru = pScb->pthru; #else pthru = &pScb->pthru; #endif mbox = (mega_mailbox *) & pScb->mboxData; memset (mbox, 0, sizeof (pScb->mboxData)); memset (pthru, 0, sizeof (mega_passthru)); pthru->timeout = 0; pthru->ars = 1; pthru->reqsenselen = 14; pthru->islogical = 1; pthru->logdrv = lun; pthru->cdblen = SCpnt->cmd_len; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /*Not sure about the direction */ pScb->dma_direction = PCI_DMA_BIDIRECTIONAL; pScb->dma_type = M_RD_PTHRU_WITH_BULK_DATA; #if 0 /* Normal Code w/o the need for bounce buffer */ pScb->dma_h_bulkdata = pci_map_single (megaCfg->dev, SCpnt->request_buffer, SCpnt->request_bufflen, pScb->dma_direction); pthru->dataxferaddr = pScb->dma_h_bulkdata; #else /* Special Code to use bounce buffer for READ_CAPA/INQ */ pthru->dataxferaddr = pScb->dma_bounce_buffer; pScb->dma_type = M_RD_DMA_TYPE_NONE; #endif #else pthru->dataxferaddr = virt_to_bus (SCpnt->request_buffer); #endif pthru->dataxferlen = SCpnt->request_bufflen; memcpy (pthru->cdb, SCpnt->cmnd, SCpnt->cmd_len); /* Initialize mailbox area */ mbox->cmd = MEGA_MBOXCMD_PASSTHRU; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) mbox->xferaddr = pScb->dma_passthruhandle64; TRACE1 (("M_RD_PTHRU_WITH_BULK_DATA Enabled \n")); #else mbox->xferaddr = virt_to_bus (pthru); #endif return pScb; case READ_6: case WRITE_6: case READ_10: case WRITE_10: /* Allocate a SCB and initialize mailbox */ if ((pScb = mega_allocateSCB (megaCfg, SCpnt)) == NULL) { SCpnt->result = (DID_ERROR << 16); callDone (SCpnt); return NULL; } mbox = (mega_mailbox *) & pScb->mboxData; memset (mbox, 0, sizeof (pScb->mboxData)); mbox->logdrv = lun; if (megaCfg->flag & BOARD_64BIT) { mbox->cmd = (*SCpnt->cmnd == READ_6 || *SCpnt->cmnd == READ_10) ? MEGA_MBOXCMD_LREAD64 : MEGA_MBOXCMD_LWRITE64; } else { mbox->cmd = (*SCpnt->cmnd == READ_6 || *SCpnt->cmnd == READ_10) ? MEGA_MBOXCMD_LREAD : MEGA_MBOXCMD_LWRITE; } /* 6-byte */ if (*SCpnt->cmnd == READ_6 || *SCpnt->cmnd == WRITE_6) { mbox->numsectors = (u32) SCpnt->cmnd[4]; mbox->lba = ((u32) SCpnt->cmnd[1] << 16) | ((u32) SCpnt->cmnd[2] << 8) | (u32) SCpnt->cmnd[3]; mbox->lba &= 0x1FFFFF; if (*SCpnt->cmnd == READ_6) { megaCfg->nReads[(int) lun]++; megaCfg->nReadBlocks[(int) lun] += mbox->numsectors; } else { megaCfg->nWrites[(int) lun]++; megaCfg->nWriteBlocks[(int) lun] += mbox->numsectors; } } /* 10-byte */ if (*SCpnt->cmnd == READ_10 || *SCpnt->cmnd == WRITE_10) { mbox->numsectors = (u32) SCpnt->cmnd[8] | ((u32) SCpnt->cmnd[7] << 8); mbox->lba = ((u32) SCpnt->cmnd[2] << 24) | ((u32) SCpnt->cmnd[3] << 16) | ((u32) SCpnt->cmnd[4] << 8) | (u32) SCpnt->cmnd[5]; if (*SCpnt->cmnd == READ_10) { megaCfg->nReads[(int) lun]++; megaCfg->nReadBlocks[(int) lun] += mbox->numsectors; } else { megaCfg->nWrites[(int) lun]++; megaCfg->nWriteBlocks[(int) lun] += mbox->numsectors; } } /* 12-byte */ if (*SCpnt->cmnd == READ_12 || *SCpnt->cmnd == WRITE_12) { mbox->lba = ((u32) SCpnt->cmnd[2] << 24) | ((u32) SCpnt->cmnd[3] << 16) | ((u32) SCpnt->cmnd[4] << 8) | (u32) SCpnt->cmnd[5]; mbox->numsectors = ((u32) SCpnt->cmnd[6] << 24) | ((u32) SCpnt->cmnd[7] << 16) | ((u32) SCpnt->cmnd[8] << 8) | (u32) SCpnt->cmnd[9]; if (*SCpnt->cmnd == READ_12) { megaCfg->nReads[(int) lun]++; megaCfg->nReadBlocks[(int) lun] += mbox->numsectors; } else { megaCfg->nWrites[(int) lun]++; megaCfg->nWriteBlocks[(int) lun] += mbox->numsectors; } } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) if (*SCpnt->cmnd == READ_6 || *SCpnt->cmnd == READ_10 || *SCpnt->cmnd == READ_12) { pScb->dma_direction = PCI_DMA_FROMDEVICE; } else { /*WRITE_6 or WRITE_10 */ pScb->dma_direction = PCI_DMA_TODEVICE; } #endif /* Calculate Scatter-Gather info */ mbox->numsgelements = mega_build_sglist (megaCfg, pScb, (u32 *)&mbox->xferaddr, (u32 *)&seg); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pScb->iDataSize = seg; if (mbox->numsgelements) { pScb->dma_type = M_RD_SGLIST_ONLY; TRACE1 (("M_RD_SGLIST_ONLY Enabled \n")); } else { pScb->dma_type = M_RD_BULK_DATA_ONLY; TRACE1 (("M_RD_BULK_DATA_ONLY Enabled \n")); } #endif return pScb; default: SCpnt->result = (DID_BAD_TARGET << 16); callDone (SCpnt); return NULL; } } /*----------------------------------------------------- * * Passthru drive commands * *-----------------------------------------------------*/ else { /* Allocate a SCB and initialize passthru */ if ((pScb = mega_allocateSCB (megaCfg, SCpnt)) == NULL) { SCpnt->result = (DID_ERROR << 16); callDone (SCpnt); return NULL; } mbox = (mega_mailbox *) pScb->mboxData; memset (mbox, 0, sizeof (pScb->mboxData)); if ( megaCfg->support_ext_cdb && SCpnt->cmd_len > 10 ) { epthru = mega_prepare_extpassthru(megaCfg, pScb, SCpnt); mbox->cmd = MEGA_MBOXCMD_EXTPASSTHRU; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) mbox->xferaddr = pScb->dma_ext_passthruhandle64; if(epthru->numsgelements) { pScb->dma_type = M_RD_PTHRU_WITH_SGLIST; } else { pScb->dma_type = M_RD_EPTHRU_WITH_BULK_DATA; } #else mbox->xferaddr = virt_to_bus(epthru); #endif } else { pthru = mega_prepare_passthru(megaCfg, pScb, SCpnt); /* Initialize mailbox */ mbox->cmd = MEGA_MBOXCMD_PASSTHRU; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) mbox->xferaddr = pScb->dma_passthruhandle64; if (pthru->numsgelements) { pScb->dma_type = M_RD_PTHRU_WITH_SGLIST; } else { pScb->dma_type = M_RD_PTHRU_WITH_BULK_DATA; } #else mbox->xferaddr = virt_to_bus(pthru); #endif } return pScb; } return NULL; } static int mega_get_lun(mega_host_config *this_hba, Scsi_Cmnd *sc) { int tgt; int lun; int virt_chan; tgt = sc->target; if ( tgt > 7 ) tgt--; /* we do not get inquires for tgt 7 */ virt_chan = sc->channel - this_hba->productInfo.SCSIChanPresent; lun = (virt_chan * 15) + tgt; /* * If "delete logical drive" feature is enabled on this controller. * Do only if at least one delete logical drive operation was done. * * Also, after logical drive deletion, instead of logical drive number, * the value returned should be 0x80+logical drive id. * * These is valid only for IO commands. */ if( this_hba->support_random_del && this_hba->read_ldidmap ) { switch(sc->cmnd[0]) { case READ_6: /* fall through */ case WRITE_6: /* fall through */ case READ_10: /* fall through */ case WRITE_10: lun += 0x80; } } return lun; } static mega_passthru * mega_prepare_passthru(mega_host_config *megacfg, mega_scb *scb, Scsi_Cmnd *sc) { mega_passthru *pthru; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pthru = scb->pthru; #else pthru = &scb->pthru; #endif memset (pthru, 0, sizeof (mega_passthru)); /* set adapter timeout value to 10 min. for tape drive */ /* 0=6sec/1=60sec/2=10min/3=3hrs */ pthru->timeout = 2; pthru->ars = 1; pthru->reqsenselen = 14; pthru->islogical = 0; pthru->channel = (megacfg->flag & BOARD_40LD) ? 0 : sc->channel; pthru->target = (megacfg->flag & BOARD_40LD) ? (sc->channel << 4) | sc->target : sc->target; pthru->cdblen = sc->cmd_len; pthru->logdrv = sc->lun; memcpy (pthru->cdb, sc->cmnd, sc->cmd_len); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* Not sure about the direction */ scb->dma_direction = PCI_DMA_BIDIRECTIONAL; /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ switch (sc->cmnd[0]) { case INQUIRY: case READ_CAPACITY: pthru->numsgelements = 0; pthru->dataxferaddr = scb->dma_bounce_buffer; pthru->dataxferlen = sc->request_bufflen; break; default: pthru->numsgelements = mega_build_sglist( megacfg, scb, (u32 *)&pthru->dataxferaddr, (u32 *)&pthru->dataxferlen ); break; } #else pthru->numsgelements = mega_build_sglist( megacfg, scb, (u32 *)&pthru->dataxferaddr, (u32 *)&pthru->dataxferlen ); #endif return pthru; } static mega_ext_passthru * mega_prepare_extpassthru(mega_host_config *megacfg, mega_scb *scb, Scsi_Cmnd *sc) { mega_ext_passthru *epthru; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) epthru = scb->epthru; #else epthru = &scb->epthru; #endif memset(epthru, 0, sizeof(mega_ext_passthru)); /* set adapter timeout value to 10 min. for tape drive */ /* 0=6sec/1=60sec/2=10min/3=3hrs */ epthru->timeout = 2; epthru->ars = 1; epthru->reqsenselen = 14; epthru->islogical = 0; epthru->channel = (megacfg->flag & BOARD_40LD) ? 0 : sc->channel; epthru->target = (megacfg->flag & BOARD_40LD) ? (sc->channel << 4) | sc->target : sc->target; epthru->cdblen = sc->cmd_len; epthru->logdrv = sc->lun; memcpy(epthru->cdb, sc->cmnd, sc->cmd_len); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* Not sure about the direction */ scb->dma_direction = PCI_DMA_BIDIRECTIONAL; /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ switch (sc->cmnd[0]) { case INQUIRY: case READ_CAPACITY: epthru->numsgelements = 0; epthru->dataxferaddr = scb->dma_bounce_buffer; epthru->dataxferlen = sc->request_bufflen; break; default: epthru->numsgelements = mega_build_sglist( megacfg, scb, (u32 *)&epthru->dataxferaddr, (u32 *)&epthru->dataxferlen ); break; } #else epthru->numsgelements = mega_build_sglist( megacfg, scb, (u32 *)&epthru->dataxferaddr, (u32 *)&epthru->dataxferlen ); #endif return epthru; } /* Handle Driver Level IOCTLs * Return value of 0 indicates this function could not handle , so continue * processing */ static int mega_driver_ioctl (mega_host_config * megaCfg, Scsi_Cmnd * SCpnt) { unsigned char *data = (unsigned char *) SCpnt->request_buffer; mega_driver_info driver_info; /* If this is not our command dont do anything */ if (SCpnt->cmnd[0] != M_RD_DRIVER_IOCTL_INTERFACE) return 0; switch (SCpnt->cmnd[1]) { case GET_DRIVER_INFO: if (SCpnt->request_bufflen < sizeof (driver_info)) { SCpnt->result = DID_BAD_TARGET << 16; callDone (SCpnt); return 1; } driver_info.size = sizeof (driver_info) - sizeof (int); driver_info.version = MEGARAID_IOCTL_VERSION; memcpy (data, &driver_info, sizeof (driver_info)); break; default: SCpnt->result = DID_BAD_TARGET << 16; } callDone (SCpnt); return 1; } static void inline set_mbox_xfer_addr (mega_host_config * megaCfg, mega_scb * pScb, mega_ioctl_mbox * mbox, u32 direction) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) switch (direction) { case TO_DEVICE: pScb->dma_direction = PCI_DMA_TODEVICE; break; case FROM_DEVICE: pScb->dma_direction = PCI_DMA_FROMDEVICE; break; case FROMTO_DEVICE: pScb->dma_direction = PCI_DMA_BIDIRECTIONAL; break; } pScb->dma_h_bulkdata = pci_map_single (megaCfg->dev, pScb->buff_ptr, pScb->iDataSize, pScb->dma_direction); mbox->xferaddr = pScb->dma_h_bulkdata; pScb->dma_type = M_RD_BULK_DATA_ONLY; TRACE1 (("M_RD_BULK_DATA_ONLY Enabled \n")); #else mbox->xferaddr = virt_to_bus (pScb->buff_ptr); #endif } #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) /*-------------------------------------------------------------------- * build RAID commands for controller, passed down through ioctl() *--------------------------------------------------------------------*/ static mega_scb *mega_ioctl (mega_host_config * megaCfg, Scsi_Cmnd * SCpnt) { mega_scb *pScb; mega_ioctl_mbox *mbox; mega_mailbox *mailbox; mega_passthru *pthru; u8 *mboxdata; long seg, i = 0; unsigned char *data = (unsigned char *) SCpnt->request_buffer; if ((pScb = mega_allocateSCB (megaCfg, SCpnt)) == NULL) { SCpnt->result = (DID_ERROR << 16); callDone (SCpnt); return NULL; } pthru = &pScb->pthru; mboxdata = (u8 *) & pScb->mboxData; mbox = (mega_ioctl_mbox *) & pScb->mboxData; mailbox = (mega_mailbox *) & pScb->mboxData; memset (mailbox, 0, sizeof (pScb->mboxData)); if (data[0] == 0x03) { /* passthrough command */ unsigned char cdblen = data[2]; memset (pthru, 0, sizeof (mega_passthru)); pthru->islogical = (data[cdblen + 3] & 0x80) ? 1 : 0; pthru->timeout = data[cdblen + 3] & 0x07; pthru->reqsenselen = 14; pthru->ars = (data[cdblen + 3] & 0x08) ? 1 : 0; pthru->logdrv = data[cdblen + 4]; pthru->channel = data[cdblen + 5]; pthru->target = data[cdblen + 6]; pthru->cdblen = cdblen; memcpy (pthru->cdb, &data[3], cdblen); mailbox->cmd = MEGA_MBOXCMD_PASSTHRU; pthru->numsgelements = mega_build_sglist (megaCfg, pScb, (u32 *) & pthru-> dataxferaddr, (u32 *) & pthru-> dataxferlen); mailbox->xferaddr = virt_to_bus (pthru); for (i = 0; i < (SCpnt->request_bufflen - cdblen - 7); i++) { data[i] = data[i + cdblen + 7]; } return pScb; } /* else normal (nonpassthru) command */ #if LINUX_VERSION_CODE > KERNEL_VERSION(2,0,24) /*0x020024 */ /* *usage of the function copy from user is used in case of data more than *4KB.This is used only with adapters which supports more than 8 logical * drives.This feature is disabled on kernels earlier or same as 2.0.36 * as the uaccess.h file is not available with those kernels. */ if (SCpnt->cmnd[0] == M_RD_IOCTL_CMD_NEW) { /* use external data area for large xfers */ /* If cmnd[0] is set to M_RD_IOCTL_CMD_NEW then * * cmnd[4..7] = external user buffer * * cmnd[8..11] = length of buffer * * */ char *user_area = (char *)*((u32*)&SCpnt->cmnd[4]); u32 xfer_size = *((u32 *) & SCpnt->cmnd[8]); switch (data[0]) { case FW_FIRE_WRITE: case FW_FIRE_FLASH: if ((ulong) user_area & (PAGE_SIZE - 1)) { printk ("megaraid:user address not aligned on 4K boundary.Error.\n"); SCpnt->result = (DID_ERROR << 16); callDone (SCpnt); return NULL; } break; default: break; } if (!(pScb->buff_ptr = kmalloc (xfer_size, GFP_KERNEL))) { printk ("megaraid: Insufficient mem for M_RD_IOCTL_CMD_NEW.\n"); SCpnt->result = (DID_ERROR << 16); callDone (SCpnt); return NULL; } copy_from_user (pScb->buff_ptr, user_area, xfer_size); pScb->iDataSize = xfer_size; switch (data[0]) { case DCMD_FC_CMD: switch (data[1]) { case DCMD_FC_READ_NVRAM_CONFIG: case DCMD_GET_DISK_CONFIG: { if ((ulong) pScb-> buff_ptr & (PAGE_SIZE - 1)) { printk ("megaraid:user address not sufficient Error.\n"); SCpnt->result = (DID_ERROR << 16); callDone (SCpnt); return NULL; } /*building SG list */ mega_build_kernel_sg (pScb->buff_ptr, xfer_size, pScb, mbox); break; } default: break; } /*switch (data[1]) */ break; } } #endif mbox->cmd = data[0]; mbox->channel = data[1]; mbox->param = data[2]; mbox->pad[0] = data[3]; mbox->logdrv = data[4]; if (SCpnt->cmnd[0] == M_RD_IOCTL_CMD_NEW) { switch (data[0]) { case FW_FIRE_WRITE: mbox->cmd = FW_FIRE_WRITE; mbox->channel = data[1]; /* Current Block Number */ set_mbox_xfer_addr (megaCfg, pScb, mbox, TO_DEVICE); mbox->numsgelements = 0; break; case FW_FIRE_FLASH: mbox->cmd = FW_FIRE_FLASH; mbox->channel = data[1] | 0x80; /* Origin */ set_mbox_xfer_addr (megaCfg, pScb, mbox, TO_DEVICE); mbox->numsgelements = 0; break; case DCMD_FC_CMD: *(mboxdata + 0) = data[0]; /*mailbox byte 0: DCMD_FC_CMD */ *(mboxdata + 2) = data[1]; /*sub command */ switch (data[1]) { case DCMD_FC_READ_NVRAM_CONFIG: case DCMD_FC_READ_NVRAM_CONFIG_64: /* number of elements in SG list */ *(mboxdata + 3) = mbox->numsgelements; if (megaCfg->flag & BOARD_64BIT) *(mboxdata + 2) = DCMD_FC_READ_NVRAM_CONFIG_64; break; case DCMD_WRITE_CONFIG: case DCMD_WRITE_CONFIG_64: if (megaCfg->flag & BOARD_64BIT) *(mboxdata + 2) = DCMD_WRITE_CONFIG_64; set_mbox_xfer_addr (megaCfg, pScb, mbox, TO_DEVICE); mbox->numsgelements = 0; break; case DCMD_GET_DISK_CONFIG: case DCMD_GET_DISK_CONFIG_64: if (megaCfg->flag & BOARD_64BIT) *(mboxdata + 2) = DCMD_GET_DISK_CONFIG_64; *(mboxdata + 3) = data[2]; /*number of elements in SG list */ /*nr of elements in SG list */ *(mboxdata + 4) = mbox->numsgelements; break; case DCMD_DELETE_LOGDRV: case DCMD_DELETE_DRIVEGROUP: case NC_SUBOP_ENQUIRY3: *(mboxdata + 3) = data[2]; set_mbox_xfer_addr (megaCfg, pScb, mbox, FROMTO_DEVICE); mbox->numsgelements = 0; break; case DCMD_CHANGE_LDNO: case DCMD_CHANGE_LOOPID: *(mboxdata + 3) = data[2]; *(mboxdata + 4) = data[3]; set_mbox_xfer_addr (megaCfg, pScb, mbox, TO_DEVICE); mbox->numsgelements = 0; break; default: set_mbox_xfer_addr (megaCfg, pScb, mbox, FROMTO_DEVICE); mbox->numsgelements = 0; break; } /*switch */ break; default: set_mbox_xfer_addr (megaCfg, pScb, mbox, FROMTO_DEVICE); mbox->numsgelements = 0; break; } } else { mbox->numsgelements = mega_build_sglist (megaCfg, pScb, (u32 *) & mbox-> xferaddr, (u32 *) & seg); /* Handling some of the fw special commands */ switch (data[0]) { case 6: /* START_DEV */ mbox->xferaddr = *((u32 *) & data[i + 6]); break; default: break; } for (i = 0; i < (SCpnt->request_bufflen - 6); i++) { data[i] = data[i + 6]; } } return (pScb); } static void mega_build_kernel_sg (char *barea, ulong xfersize, mega_scb * pScb, mega_ioctl_mbox * mbox) { ulong i, buffer_area, len, end, end_page, x, idx = 0; buffer_area = (ulong) barea; i = buffer_area; end = buffer_area + xfersize; end_page = (end) & ~(PAGE_SIZE - 1); do { len = PAGE_SIZE - (i % PAGE_SIZE); x = pScb->sgList[idx].address = virt_to_bus ((volatile void *) i); pScb->sgList[idx].length = len; i += len; idx++; } while (i < end_page); if ((end - i) < 0) { printk ("megaraid:Error in user address\n"); } if (end - i) { pScb->sgList[idx].address = virt_to_bus ((volatile void *) i); pScb->sgList[idx].length = end - i; idx++; } mbox->xferaddr = virt_to_bus (pScb->sgList); mbox->numsgelements = idx; } #endif #if DEBUG static unsigned int cum_time = 0; static unsigned int cum_time_cnt = 0; static void showMbox (mega_scb * pScb) { mega_mailbox *mbox; if (pScb == NULL) return; mbox = (mega_mailbox *) pScb->mboxData; printk ("%u cmd:%x id:%x #scts:%x lba:%x addr:%x logdrv:%x #sg:%x\n", pScb->SCpnt->pid, mbox->cmd, mbox->cmdid, mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, mbox->numsgelements); } #endif /*-------------------------------------------------------------------- * Interrupt service routine *--------------------------------------------------------------------*/ static void megaraid_isr (int irq, void *devp, struct pt_regs *regs) { IO_LOCK_T; mega_host_config * megaCfg; u_char byte, idx, sIdx, tmpBox[MAILBOX_SIZE]; u32 dword = 0; mega_mailbox *mbox; mega_scb *pScb; u_char qCnt, qStatus; u_char completed[MAX_FIRMWARE_STATUS]; Scsi_Cmnd *SCpnt; megaCfg = (mega_host_config *) devp; mbox = (mega_mailbox *) tmpBox; if (megaCfg->host->irq == irq) { if (megaCfg->flag & IN_ISR) { TRACE (("ISR called reentrantly!!\n")); printk ("ISR called reentrantly!!\n"); } megaCfg->flag |= IN_ISR; if (mega_busyWaitMbox (megaCfg)) { printk (KERN_WARNING "Error: mailbox busy in isr!\n"); } /* Check if a valid interrupt is pending */ if (megaCfg->flag & BOARD_QUARTZ) { dword = RDOUTDOOR (megaCfg); if (dword != 0x10001234) { /* Spurious interrupt */ megaCfg->flag &= ~IN_ISR; return; } } else { byte = READ_PORT (megaCfg->host->io_port, INTR_PORT); if ((byte & VALID_INTR_BYTE) == 0) { /* Spurious interrupt */ megaCfg->flag &= ~IN_ISR; return; } WRITE_PORT (megaCfg->host->io_port, INTR_PORT, byte); } for (idx = 0; idx < MAX_FIRMWARE_STATUS; idx++) completed[idx] = 0; IO_LOCK; megaCfg->nInterrupts++; qCnt = 0xff; while ((qCnt = megaCfg->mbox->numstatus) == 0xFF) ; qStatus = 0xff; while ((qStatus = megaCfg->mbox->status) == 0xFF) ; /* Get list of completed requests */ for (idx = 0; idx < qCnt; idx++) { while ((sIdx = megaCfg->mbox->completed[idx]) == 0xFF) { printk ("p"); } completed[idx] = sIdx; sIdx = 0xFF; } if (megaCfg->flag & BOARD_QUARTZ) { WROUTDOOR (megaCfg, dword); /* Acknowledge interrupt */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* In this case mbox contains physical address */ #if 0 WRINDOOR (megaCfg, megaCfg->adjdmahandle64 | 0x2); #else WRINDOOR (megaCfg, 0x2); #endif #else #if 0 WRINDOOR (megaCfg, virt_to_bus (megaCfg->mbox) | 0x2); #else WRINDOOR (megaCfg, 0x2); #endif #endif #if 0 while (RDINDOOR (megaCfg) & 0x02) ; #endif } else { CLEAR_INTR (megaCfg->host->io_port); } #if DEBUG if (qCnt >= MAX_FIRMWARE_STATUS) { printk ("megaraid_isr: cmplt=%d ", qCnt); } #endif for (idx = 0; idx < qCnt; idx++) { sIdx = completed[idx]; if ((sIdx > 0) && (sIdx <= MAX_COMMANDS)) { pScb = &megaCfg->scbList[sIdx - 1]; /* ASSERT(pScb->state == SCB_ISSUED); */ #if DEBUG if (((jiffies) - pScb->isrcount) > maxCmdTime) { maxCmdTime = (jiffies) - pScb->isrcount; printk ("megaraid_isr : cmd time = %u\n", maxCmdTime); } #endif /* * Assuming that the scsi command, for which * an abort request was received earlier, has * completed. */ if (pScb->state == SCB_ABORTED) { SCpnt = pScb->SCpnt; } if (pScb->state == SCB_RESET) { SCpnt = pScb->SCpnt; mega_freeSCB (megaCfg, pScb); SCpnt->result = (DID_RESET << 16); if (megaCfg->qCompletedH == NULL) { megaCfg->qCompletedH = megaCfg->qCompletedT = SCpnt; } else { megaCfg->qCompletedT-> host_scribble = (unsigned char *) SCpnt; megaCfg->qCompletedT = SCpnt; } megaCfg->qCompletedT->host_scribble = (unsigned char *) NULL; megaCfg->qCcnt++; continue; } /* We don't want the ISR routine to touch M_RD_IOCTL_CMD_NEW commands, so * don't mark them as complete, instead we pop their semaphore so * that the queue routine can finish them off */ if (pScb->SCpnt->cmnd[0] == M_RD_IOCTL_CMD_NEW) { /* save the status byte for the queue routine to use */ pScb->SCpnt->result = qStatus; up (&pScb->ioctl_sem); } else { /* Mark command as completed */ mega_cmd_done (megaCfg, pScb, qStatus); } } else { printk ("megaraid: wrong cmd id completed from firmware:id=%x\n", sIdx); } } mega_rundoneq (megaCfg); megaCfg->flag &= ~IN_ISR; /* Loop through any pending requests */ mega_runpendq (megaCfg); IO_UNLOCK; } } /*==================================================*/ /* Wait until the controller's mailbox is available */ /*==================================================*/ static int mega_busyWaitMbox (mega_host_config * megaCfg) { mega_mailbox *mbox = (mega_mailbox *) megaCfg->mbox; long counter; for (counter = 0; counter < 10000; counter++) { if (!mbox->busy) { return 0; } udelay (100); barrier (); } return -1; /* give up after 1 second */ } /*===================================================== * Post a command to the card * * Arguments: * mega_host_config *megaCfg - Controller structure * u_char *mboxData - Mailbox area, 16 bytes * mega_scb *pScb - SCB posting (or NULL if N/A) * int intr - if 1, interrupt, 0 is blocking * Return Value: (added on 7/26 for 40ld/64bit) * -1: the command was not actually issued out * other cases: * intr==0, return ScsiStatus, i.e. mbox->status * intr==1, return 0 *===================================================== */ static int megaIssueCmd (mega_host_config * megaCfg, u_char * mboxData, mega_scb * pScb, int intr) { volatile mega_mailbox *mbox = (mega_mailbox *) megaCfg->mbox; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) volatile mega_mailbox64 *mbox64 = (mega_mailbox64 *) megaCfg->mbox64; #endif u_char byte; #ifdef __LP64__ u64 phys_mbox; #else u32 phys_mbox; #endif u8 retval = -1; mboxData[0x1] = (pScb ? pScb->idx + 1 : 0xFE); /* Set cmdid */ mboxData[0xF] = 1; /* Set busy */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* In this case mbox contains physical address */ phys_mbox = megaCfg->adjdmahandle64; #else phys_mbox = virt_to_bus (megaCfg->mbox); #endif #if DEBUG ShowMbox (pScb); #endif /* Wait until mailbox is free */ if (mega_busyWaitMbox (megaCfg)) { printk ("Blocked mailbox......!!\n"); udelay (1000); #if DEBUG showMbox (pLastScb); #endif /* Abort command */ if (pScb == NULL) { TRACE (("NULL pScb in megaIssue\n")); printk ("NULL pScb in megaIssue\n"); } mega_cmd_done (megaCfg, pScb, 0x08); return -1; } pLastScb = pScb; /* Copy mailbox data into host structure */ megaCfg->mbox64->xferSegment_lo = 0; megaCfg->mbox64->xferSegment_hi = 0; memcpy ((char *) mbox, mboxData, 16); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) switch (mboxData[0]) { case MEGA_MBOXCMD_LREAD64: case MEGA_MBOXCMD_LWRITE64: mbox64->xferSegment_lo = mbox->xferaddr; mbox64->xferSegment_hi = 0; mbox->xferaddr = 0xFFFFFFFF; break; } #endif /* Kick IO */ if (intr) { /* Issue interrupt (non-blocking) command */ if (megaCfg->flag & BOARD_QUARTZ) { mbox->mraid_poll = 0; mbox->mraid_ack = 0; WRINDOOR (megaCfg, phys_mbox | 0x1); } else { ENABLE_INTR (megaCfg->host->io_port); ISSUE_COMMAND (megaCfg->host->io_port); } pScb->state = SCB_ISSUED; retval = 0; } else { /* Issue non-ISR (blocking) command */ disable_irq (megaCfg->host->irq); if (megaCfg->flag & BOARD_QUARTZ) { mbox->mraid_poll = 0; mbox->mraid_ack = 0; mbox->numstatus = 0xFF; mbox->status = 0xFF; WRINDOOR (megaCfg, phys_mbox | 0x1); while (mbox->numstatus == 0xFF) ; while (mbox->status == 0xFF) ; while (mbox->mraid_poll != 0x77) ; mbox->mraid_poll = 0; mbox->mraid_ack = 0x77; /* while ((cmdDone = RDOUTDOOR (megaCfg)) != 0x10001234); WROUTDOOR (megaCfg, cmdDone); */ if (pScb) { mega_cmd_done (megaCfg, pScb, mbox->status); } WRINDOOR (megaCfg, phys_mbox | 0x2); while (RDINDOOR (megaCfg) & 0x2) ; } else { DISABLE_INTR (megaCfg->host->io_port); ISSUE_COMMAND (megaCfg->host->io_port); while (! ((byte = READ_PORT (megaCfg->host->io_port, INTR_PORT)) & INTR_VALID)) ; WRITE_PORT (megaCfg->host->io_port, INTR_PORT, byte); ENABLE_INTR (megaCfg->host->io_port); CLEAR_INTR (megaCfg->host->io_port); if (pScb) { mega_cmd_done (megaCfg, pScb, mbox->status); } else { TRACE (("Error: NULL pScb!\n")); } } enable_irq (megaCfg->host->irq); retval = mbox->status; } #if DEBUG while (mega_busyWaitMbox (megaCfg)) { printk(KERN_ERR "Blocked mailbox on exit......!\n"); udelay (1000); } #endif return retval; } /*------------------------------------------------------------------- * Copies data to SGLIST *-------------------------------------------------------------------*/ /* Note: For 64 bit cards, we need a minimum of one SG element for read/write */ static int mega_build_sglist (mega_host_config * megaCfg, mega_scb * scb, u32 * buffer, u32 * length) { struct scatterlist *sgList; int idx; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) int sgcnt; #endif mega_mailbox *mbox = NULL; mbox = (mega_mailbox *) scb->mboxData; /* Scatter-gather not used */ if (scb->SCpnt->use_sg == 0) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) scb->dma_h_bulkdata = pci_map_single (megaCfg->dev, scb->SCpnt->request_buffer, scb->SCpnt->request_bufflen, scb->dma_direction); /* We need to handle special commands like READ64, WRITE64 as they need a minimum of 1 SG irrespective of actually SG */ if ((megaCfg->flag & BOARD_64BIT) && ((mbox->cmd == MEGA_MBOXCMD_LREAD64) || (mbox->cmd == MEGA_MBOXCMD_LWRITE64))) { scb->sg64List[0].address = scb->dma_h_bulkdata; scb->sg64List[0].length = scb->SCpnt->request_bufflen; *buffer = scb->dma_sghandle64; *length = 0; scb->sglist_count = 1; return 1; } else { *buffer = scb->dma_h_bulkdata; *length = (u32) scb->SCpnt->request_bufflen; } #else *buffer = virt_to_bus (scb->SCpnt->request_buffer); *length = (u32) scb->SCpnt->request_bufflen; #endif return 0; } sgList = (struct scatterlist *) scb->SCpnt->request_buffer; #if 0 if (scb->SCpnt->use_sg == 1) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) scb->dma_h_bulkdata = pci_map_single (megaCfg->dev, sgList[0].address, sgList[0].length, scb->dma_direction); if ((megaCfg->flag & BOARD_64BIT) && ((mbox->cmd == MEGA_MBOXCMD_LREAD64) || (mbox->cmd == MEGA_MBOXCMD_LWRITE64))) { scb->sg64List[0].address = scb->dma_h_bulkdata; scb->sg64List[0].length = scb->SCpnt->request_bufflen; *buffer = scb->dma_sghandle64; *length = 0; scb->sglist_count = 1; return 1; } else { *buffer = scb->dma_h_bulkdata; *length = (u32) sgList[0].length; } #else *buffer = virt_to_bus (sgList[0].address); *length = (u32) sgList[0].length; #endif return 0; } #endif /* Copy Scatter-Gather list info into controller structure */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) sgcnt = pci_map_sg (megaCfg->dev, sgList, scb->SCpnt->use_sg, scb->dma_direction); /* Determine the validity of the new count */ if (sgcnt == 0) printk ("pci_map_sg returned zero!!! "); for (idx = 0; idx < sgcnt; idx++, sgList++) { if ((megaCfg->flag & BOARD_64BIT) && ((mbox->cmd == MEGA_MBOXCMD_LREAD64) || (mbox->cmd == MEGA_MBOXCMD_LWRITE64))) { scb->sg64List[idx].address = sg_dma_address (sgList); scb->sg64List[idx].length = sg_dma_len (sgList); } else { scb->sgList[idx].address = sg_dma_address (sgList); scb->sgList[idx].length = sg_dma_len (sgList); } } #else for (idx = 0; idx < scb->SCpnt->use_sg; idx++) { scb->sgList[idx].address = virt_to_bus (sgList[idx].address); scb->sgList[idx].length = (u32) sgList[idx].length; } #endif /* Reset pointer and length fields */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) *buffer = scb->dma_sghandle64; scb->sglist_count = scb->SCpnt->use_sg; #else *buffer = virt_to_bus (scb->sgList); #endif *length = 0; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* Return count of SG requests */ return sgcnt; #else /* Return count of SG requests */ return scb->SCpnt->use_sg; #endif } /*-------------------------------------------------------------------- * Initializes the address of the controller's mailbox register * The mailbox register is used to issue commands to the card. * Format of the mailbox area: * 00 01 command * 01 01 command id * 02 02 # of sectors * 04 04 logical bus address * 08 04 physical buffer address * 0C 01 logical drive # * 0D 01 length of scatter/gather list * 0E 01 reserved * 0F 01 mailbox busy * 10 01 numstatus byte * 11 01 status byte *--------------------------------------------------------------------*/ static int mega_register_mailbox (mega_host_config * megaCfg, u32 paddr) { /* align on 16-byte boundary */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) megaCfg->mbox = &megaCfg->mailbox64ptr->mailbox; #else megaCfg->mbox = &megaCfg->mailbox64.mailbox; #endif #ifdef __LP64__ megaCfg->mbox = (mega_mailbox *) ((((u64) megaCfg->mbox) + 16) & ((u64) (-1) ^ 0x0F)); megaCfg->adjdmahandle64 = (megaCfg->dma_handle64 + 16) & ((u64) (-1) ^ 0x0F); megaCfg->mbox64 = (mega_mailbox64 *) ((u_char *) megaCfg->mbox - sizeof (u64)); paddr = (paddr + 4 + 16) & ((u64) (-1) ^ 0x0F); #else megaCfg->mbox = (mega_mailbox *) ((((u32) megaCfg->mbox) + 16) & 0xFFFFFFF0); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) megaCfg->adjdmahandle64 = ((megaCfg->dma_handle64 + 16) & 0xFFFFFFF0); #endif megaCfg->mbox64 = (mega_mailbox64 *) ((u_char *) megaCfg->mbox - 8); paddr = (paddr + 4 + 16) & 0xFFFFFFF0; #endif /* Register mailbox area with the firmware */ if (!(megaCfg->flag & BOARD_QUARTZ)) { WRITE_PORT (megaCfg->host->io_port, MBOX_PORT0, paddr & 0xFF); WRITE_PORT (megaCfg->host->io_port, MBOX_PORT1, (paddr >> 8) & 0xFF); WRITE_PORT (megaCfg->host->io_port, MBOX_PORT2, (paddr >> 16) & 0xFF); WRITE_PORT (megaCfg->host->io_port, MBOX_PORT3, (paddr >> 24) & 0xFF); WRITE_PORT (megaCfg->host->io_port, ENABLE_MBOX_REGION, ENABLE_MBOX_BYTE); CLEAR_INTR (megaCfg->host->io_port); ENABLE_INTR (megaCfg->host->io_port); } return 0; } /*--------------------------------------------------------------------------- * mega_Convert8ldTo40ld() -- takes all info in AdapterInquiry structure and * puts it into ProductInfo and Enquiry3 structures for later use *---------------------------------------------------------------------------*/ static void mega_Convert8ldTo40ld (mega_RAIDINQ * inquiry, mega_Enquiry3 * enquiry3, megaRaidProductInfo * productInfo) { int i; productInfo->MaxConcCmds = inquiry->AdpInfo.MaxConcCmds; enquiry3->rbldRate = inquiry->AdpInfo.RbldRate; productInfo->SCSIChanPresent = inquiry->AdpInfo.ChanPresent; for (i = 0; i < 4; i++) { productInfo->FwVer[i] = inquiry->AdpInfo.FwVer[i]; productInfo->BiosVer[i] = inquiry->AdpInfo.BiosVer[i]; } enquiry3->cacheFlushInterval = inquiry->AdpInfo.CacheFlushInterval; productInfo->DramSize = inquiry->AdpInfo.DramSize; enquiry3->numLDrv = inquiry->LogdrvInfo.NumLDrv; for (i = 0; i < MAX_LOGICAL_DRIVES; i++) { enquiry3->lDrvSize[i] = inquiry->LogdrvInfo.LDrvSize[i]; enquiry3->lDrvProp[i] = inquiry->LogdrvInfo.LDrvProp[i]; enquiry3->lDrvState[i] = inquiry->LogdrvInfo.LDrvState[i]; } for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) { enquiry3->pDrvState[i] = inquiry->PhysdrvInfo.PDrvState[i]; } } /*------------------------------------------------------------------- * Issue an adapter info query to the controller *-------------------------------------------------------------------*/ static int mega_i_query_adapter (mega_host_config * megaCfg) { mega_Enquiry3 *enquiry3Pnt; mega_mailbox *mbox; u_char mboxData[16]; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) dma_addr_t raid_inq_dma_handle = 0, prod_info_dma_handle = 0, enquiry3_dma_handle = 0; #endif u8 retval; /* Initialize adapter inquiry mailbox */ mbox = (mega_mailbox *) mboxData; memset ((void *) megaCfg->mega_buffer, 0, sizeof (megaCfg->mega_buffer)); memset (mbox, 0, 16); /* * Try to issue Enquiry3 command * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and * update enquiry3 structure */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) enquiry3_dma_handle = pci_map_single (megaCfg->dev, (void *) megaCfg->mega_buffer, (2 * 1024L), PCI_DMA_FROMDEVICE); mbox->xferaddr = enquiry3_dma_handle; #else /*Taken care */ mbox->xferaddr = virt_to_bus ((void *) megaCfg->mega_buffer); #endif /* Initialize mailbox databuffer addr */ enquiry3Pnt = (mega_Enquiry3 *) megaCfg->mega_buffer; /* point mega_Enguiry3 to the data buf */ mboxData[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ mboxData[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ mboxData[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ /* Issue a blocking command to the card */ if ((retval = megaIssueCmd (megaCfg, mboxData, NULL, 0)) != 0) { /* the adapter does not support 40ld */ mega_RAIDINQ adapterInquiryData; mega_RAIDINQ *adapterInquiryPnt = &adapterInquiryData; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) raid_inq_dma_handle = pci_map_single (megaCfg->dev, (void *) adapterInquiryPnt, sizeof (mega_RAIDINQ), PCI_DMA_FROMDEVICE); mbox->xferaddr = raid_inq_dma_handle; #else /*taken care */ mbox->xferaddr = virt_to_bus ((void *) adapterInquiryPnt); #endif mbox->cmd = MEGA_MBOXCMD_ADAPTERINQ; /*issue old 0x05 command to adapter */ /* Issue a blocking command to the card */ ; retval = megaIssueCmd (megaCfg, mboxData, NULL, 0); pci_unmap_single (megaCfg->dev, raid_inq_dma_handle, sizeof (mega_RAIDINQ), PCI_DMA_FROMDEVICE); /*update Enquiry3 and ProductInfo structures with mega_RAIDINQ structure*/ mega_Convert8ldTo40ld (adapterInquiryPnt, enquiry3Pnt, (megaRaidProductInfo *) & megaCfg-> productInfo); } else { /* adapter supports 40ld */ megaCfg->flag |= BOARD_40LD; pci_unmap_single (megaCfg->dev, enquiry3_dma_handle, (2 * 1024L), PCI_DMA_FROMDEVICE); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /*get productInfo, which is static information and will be unchanged*/ prod_info_dma_handle = pci_map_single (megaCfg->dev, (void *) &megaCfg->productInfo, sizeof (megaRaidProductInfo), PCI_DMA_FROMDEVICE); mbox->xferaddr = prod_info_dma_handle; #else /*taken care */ mbox->xferaddr = virt_to_bus ((void *) &megaCfg->productInfo); #endif mboxData[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ mboxData[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ if ((retval = megaIssueCmd (megaCfg, mboxData, NULL, 0)) != 0) printk ("megaraid: Product_info cmd failed with error: %d\n", retval); pci_unmap_single (megaCfg->dev, prod_info_dma_handle, sizeof (megaRaidProductInfo), PCI_DMA_FROMDEVICE); } /* * kernel scans the channels from 0 to <= max_channel */ megaCfg->host->max_channel = megaCfg->productInfo.SCSIChanPresent + NVIRT_CHAN -1; megaCfg->host->max_id = 16; /* max targets per channel */ /*(megaCfg->flag & BOARD_40LD)?FC_MAX_TARGETS_PER_CHANNEL:MAX_TARGET+1; */ #if 0 megaCfg->host->max_lun = /* max lun */ (megaCfg->flag & BOARD_40LD) ? FC_MAX_LOGICAL_DRIVES : MAX_LOGICAL_DRIVES; #endif megaCfg->host->max_lun = 7; /* Upto 7 luns for non disk devices */ megaCfg->host->cmd_per_lun = MAX_CMD_PER_LUN; megaCfg->numldrv = enquiry3Pnt->numLDrv; megaCfg->max_cmds = megaCfg->productInfo.MaxConcCmds; if (megaCfg->max_cmds > MAX_COMMANDS) megaCfg->max_cmds = MAX_COMMANDS - 1; megaCfg->host->can_queue = megaCfg->max_cmds - 1; #if 0 if (megaCfg->host->can_queue >= MAX_COMMANDS) { megaCfg->host->can_queue = MAX_COMMANDS - 16; } #endif /* use HP firmware and bios version encoding */ if (megaCfg->productInfo.subSystemVendorID == HP_SUBSYS_ID) { sprintf (megaCfg->fwVer, "%c%d%d.%d%d", megaCfg->productInfo.FwVer[2], megaCfg->productInfo.FwVer[1] >> 8, megaCfg->productInfo.FwVer[1] & 0x0f, megaCfg->productInfo.FwVer[0] >> 8, megaCfg->productInfo.FwVer[0] & 0x0f); sprintf (megaCfg->biosVer, "%c%d%d.%d%d", megaCfg->productInfo.BiosVer[2], megaCfg->productInfo.BiosVer[1] >> 8, megaCfg->productInfo.BiosVer[1] & 0x0f, megaCfg->productInfo.BiosVer[0] >> 8, megaCfg->productInfo.BiosVer[0] & 0x0f); } else { memcpy (megaCfg->fwVer, (char *) megaCfg->productInfo.FwVer, 4); megaCfg->fwVer[4] = 0; memcpy (megaCfg->biosVer, (char *) megaCfg->productInfo.BiosVer, 4); megaCfg->biosVer[4] = 0; } megaCfg->support_ext_cdb = mega_support_ext_cdb(megaCfg); printk (KERN_NOTICE "megaraid: [%s:%s] detected %d logical drives" M_RD_CRLFSTR, megaCfg->fwVer, megaCfg->biosVer, megaCfg->numldrv); if ( megaCfg->support_ext_cdb ) { printk(KERN_NOTICE "megaraid: supports extended CDBs.\n"); } /* * I hope that I can unmap here, reason DMA transaction is not required any more * after this */ return 0; } /*------------------------------------------------------------------------- * * Driver interface functions * *-------------------------------------------------------------------------*/ /*---------------------------------------------------------- * Returns data to be displayed in /proc/scsi/megaraid/X *----------------------------------------------------------*/ int megaraid_proc_info (char *buffer, char **start, off_t offset, int length, int host_no, int inout) { *start = buffer; return 0; } static int mega_findCard (Scsi_Host_Template * pHostTmpl, u16 pciVendor, u16 pciDev, long flag) { mega_host_config *megaCfg = NULL; struct Scsi_Host *host = NULL; u_char pciBus, pciDevFun, megaIrq; u16 magic; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) u32 magic64; #endif int i; #ifdef __LP64__ u64 megaBase; #else u32 megaBase; #endif u16 pciIdx = 0; u16 numFound = 0; u16 subsysid, subsysvid; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) /* 0x20100 */ while (!pcibios_find_device (pciVendor, pciDev, pciIdx, &pciBus, &pciDevFun)) { #else #if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0) /*0x20300 */ struct pci_dev *pdev = NULL; #else struct pci_dev *pdev = pci_devices; #endif while ((pdev = pci_find_device (pciVendor, pciDev, pdev))) { if(pci_enable_device (pdev)) continue; pciBus = pdev->bus->number; pciDevFun = pdev->devfn; #endif if ((flag & BOARD_QUARTZ) && (skip_id == -1)) { pcibios_read_config_word (pciBus, pciDevFun, PCI_CONF_AMISIG, &magic); if ((magic != AMI_SIGNATURE) && (magic != AMI_SIGNATURE_471)) { pciIdx++; continue; /* not an AMI board */ } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pcibios_read_config_dword (pciBus, pciDevFun, PCI_CONF_AMISIG64, &magic64); if (magic64 == AMI_64BIT_SIGNATURE) flag |= BOARD_64BIT; #endif } /* Hmmm...Should we not make this more modularized so that in future we dont add for each firmware */ if (flag & BOARD_QUARTZ) { /* Check to see if this is a Dell PERC RAID controller model 466 */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) /* 0x20100 */ pcibios_read_config_word (pciBus, pciDevFun, PCI_SUBSYSTEM_VENDOR_ID, &subsysvid); pcibios_read_config_word (pciBus, pciDevFun, PCI_SUBSYSTEM_ID, &subsysid); #else pci_read_config_word (pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsysvid); pci_read_config_word (pdev, PCI_SUBSYSTEM_ID, &subsysid); #endif #if 0 /* * This routine is called with well know values and we * should not be getting what we have not asked. * Also, the check is not right. It should have been for * pci_vendor_id not subsysvid - AM */ /* If we dont detect this valid subsystem vendor id's we refuse to load the driver PART of PC200X compliance */ if ((subsysvid != AMI_SUBSYS_ID) && (subsysvid != DELL_SUBSYS_ID) && (subsysvid != HP_SUBSYS_ID)) continue; #endif } printk (KERN_NOTICE "megaraid: found 0x%4.04x:0x%4.04x:idx %d:bus %d:slot %d:func %d\n", pciVendor, pciDev, pciIdx, pciBus, PCI_SLOT (pciDevFun), PCI_FUNC (pciDevFun)); /* Read the base port and IRQ from PCI */ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) /* 0x20100 */ pcibios_read_config_dword (pciBus, pciDevFun, PCI_BASE_ADDRESS_0, (u_int *) & megaBase); pcibios_read_config_byte (pciBus, pciDevFun, PCI_INTERRUPT_LINE, &megaIrq); #elif LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) /*0x20300 */ megaBase = pdev->base_address[0]; megaIrq = pdev->irq; #else megaBase = pci_resource_start (pdev, 0); megaIrq = pdev->irq; #endif pciIdx++; if (flag & BOARD_QUARTZ) { megaBase &= PCI_BASE_ADDRESS_MEM_MASK; megaBase = (long) ioremap (megaBase, 128); if (!megaBase) continue; } else { megaBase &= PCI_BASE_ADDRESS_IO_MASK; megaBase += 0x10; } /* Initialize SCSI Host structure */ host = scsi_register (pHostTmpl, sizeof (mega_host_config)); if (!host) goto err_unmap; /* * Comment the following initialization if you know 'max_sectors' is * not defined for this kernel. * This field was introduced in Linus's kernel 2.4.7pre3 and it * greatly increases the IO performance - AM */ host->max_sectors = 1024; scsi_set_pci_device(host, pdev); megaCfg = (mega_host_config *) host->hostdata; memset (megaCfg, 0, sizeof (mega_host_config)); printk (KERN_NOTICE "scsi%d : Found a MegaRAID controller at 0x%x, IRQ: %d" M_RD_CRLFSTR, host->host_no, (u_int) megaBase, megaIrq); if (flag & BOARD_64BIT) printk (KERN_NOTICE "scsi%d : Enabling 64 bit support\n", host->host_no); /* Copy resource info into structure */ megaCfg->qCompletedH = NULL; megaCfg->qCompletedT = NULL; megaCfg->qPendingH = NULL; megaCfg->qPendingT = NULL; megaCfg->qFreeH = NULL; megaCfg->qFreeT = NULL; megaCfg->qFcnt = 0; megaCfg->qPcnt = 0; megaCfg->qCcnt = 0; megaCfg->lock_free = SPIN_LOCK_UNLOCKED; megaCfg->lock_pend = SPIN_LOCK_UNLOCKED; megaCfg->lock_scsicmd = SPIN_LOCK_UNLOCKED; megaCfg->flag = flag; megaCfg->int_qh = NULL; megaCfg->int_qt = NULL; megaCfg->int_qlen = 0; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) megaCfg->dev = pdev; #endif megaCfg->host = host; megaCfg->base = megaBase; megaCfg->host->irq = megaIrq; megaCfg->host->io_port = megaBase; megaCfg->host->n_io_port = 16; megaCfg->host->unique_id = (pciBus << 8) | pciDevFun; megaCtlrs[numCtlrs] = megaCfg; if (!(flag & BOARD_QUARTZ)) { /* Request our IO Range */ if (check_region (megaBase, 16)) { printk(KERN_WARNING "megaraid: Couldn't register I/O range!\n"); goto err_unregister; } request_region(megaBase, 16, "megaraid"); } /* Request our IRQ */ if (request_irq (megaIrq, megaraid_isr, SA_SHIRQ, "megaraid", megaCfg)) { printk (KERN_WARNING "megaraid: Couldn't register IRQ %d!\n", megaIrq); goto err_release; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* * unmap while releasing the driver, Is it required to be * PCI_DMA_BIDIRECTIONAL */ megaCfg->mailbox64ptr = pci_alloc_consistent (megaCfg->dev, sizeof (mega_mailbox64), &(megaCfg->dma_handle64)); mega_register_mailbox (megaCfg, virt_to_bus ((void *) megaCfg-> mailbox64ptr)); #else mega_register_mailbox (megaCfg, virt_to_bus ((void *) &megaCfg-> mailbox64)); #endif mega_i_query_adapter (megaCfg); if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { /* * Which firmware */ if( strcmp(megaCfg->fwVer, "3.00") == 0 || strcmp(megaCfg->fwVer, "3.01") == 0 ) { printk( KERN_WARNING "megaraid: Your card is a Dell PERC 2/SC RAID controller " "with firmware\nmegaraid: 3.00 or 3.01. This driver is " "known to have corruption issues\nmegaraid: with those " "firmware versions on this specific card. In order\n" "megaraid: to protect your data, please upgrade your " "firmware to version\nmegaraid: 3.10 or later, available " "from the Dell Technical Support web\nmegaraid: site at\n" "http://support.dell.com/us/en/filelib/download/" "index.asp?fileid=2940\n" ); } } /* * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with * firmware H.01.07 or H.01.08, disable 64 bit support, * since this firmware cannot handle 64 bit addressing */ if( (subsysvid == HP_SUBSYS_ID) && ((subsysid == 0x60E7)||(subsysid == 0x60E8)) ) { /* * which firmware */ if( strcmp(megaCfg->fwVer, "H01.07") == 0 || strcmp(megaCfg->fwVer, "H01.08") == 0 ) { printk(KERN_WARNING "megaraid: Firmware H.01.07 or H.01.08 on 1M/2M " "controllers\nmegaraid: do not support 64 bit " "addressing.\n" "megaraid: DISABLING 64 bit support.\n"); megaCfg->flag &= ~BOARD_64BIT; } } if (mega_is_bios_enabled (megaCfg)) { mega_hbas[numCtlrs].is_bios_enabled = 1; } /* * Find out which channel is raid and which is scsi */ mega_enum_raid_scsi(megaCfg); for( i = 0; i < megaCfg->productInfo.SCSIChanPresent; i++ ) { if(IS_RAID_CH(i)) printk(KERN_NOTICE"megaraid: channel[%d] is raid.\n", i+1); else printk(KERN_NOTICE"megaraid: channel[%d] is scsi.\n", i+1); } /* * Find out if a logical drive is set as the boot drive. If there is * one, will make that as the first logical drive. */ mega_get_boot_ldrv(megaCfg); mega_hbas[numCtlrs].hostdata_addr = megaCfg; /* * Do we support random deletion and addition of logical drives */ megaCfg->read_ldidmap = 0; /* set it after first logdrv delete cmd */ megaCfg->support_random_del = mega_support_random_del(megaCfg); /* Initialize SCBs */ if (mega_init_scb (megaCfg)) { pci_free_consistent (megaCfg->dev, sizeof (mega_mailbox64), (void *) megaCfg->mailbox64ptr, megaCfg->dma_handle64); scsi_unregister (host); continue; } /* * Fill in the structure which needs to be passed back to the * application when it does an ioctl() for controller related * information. */ i = numCtlrs; numCtlrs++; mcontroller[i].base = megaBase; mcontroller[i].irq = megaIrq; mcontroller[i].numldrv = megaCfg->numldrv; mcontroller[i].pcibus = pciBus; mcontroller[i].pcidev = pciDev; mcontroller[i].pcifun = PCI_FUNC (pciDevFun); mcontroller[i].pciid = pciIdx; mcontroller[i].pcivendor = pciVendor; mcontroller[i].pcislot = PCI_SLOT (pciDevFun); mcontroller[i].uid = (pciBus << 8) | pciDevFun; numFound++; /* Set the Mode of addressing to 64 bit */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) if ((megaCfg->flag & BOARD_64BIT) && BITS_PER_LONG == 64) #ifdef __LP64__ pdev->dma_mask = 0xffffffffffffffff; #else pdev->dma_mask = 0xffffffff; #endif #endif continue; err_release: if (flag & BOARD_QUARTZ) release_region (megaBase, 16); err_unregister: scsi_unregister (host); err_unmap: if (flag & BOARD_QUARTZ) iounmap ((void *) megaBase); } return numFound; } /*--------------------------------------------------------- * Detects if a megaraid controller exists in this system *---------------------------------------------------------*/ int megaraid_detect (Scsi_Host_Template * pHostTmpl) { int ctlridx = 0, count = 0; #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) /*0x20300 */ pHostTmpl->proc_dir = &proc_scsi_megaraid; #else pHostTmpl->proc_name = "megaraid"; #endif #if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0) /* 0x20100 */ if (!pcibios_present ()) { printk (KERN_WARNING "megaraid: PCI bios not present." M_RD_CRLFSTR); return 0; } #endif skip_id = -1; if (megaraid && !strncmp (megaraid, "skip", strlen ("skip"))) { if (megaraid[4] != '\0') { skip_id = megaraid[4] - '0'; if (megaraid[5] != '\0') { skip_id = (skip_id * 10) + (megaraid[5] - '0'); } } skip_id = (skip_id > 15) ? -1 : skip_id; } printk (KERN_NOTICE "megaraid: " MEGARAID_VERSION); memset (mega_hbas, 0, sizeof (mega_hbas)); count += mega_findCard (pHostTmpl, PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, 0); count += mega_findCard (pHostTmpl, PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, 0); count += mega_findCard (pHostTmpl, 0x8086, PCI_DEVICE_ID_AMI_MEGARAID3, BOARD_QUARTZ); count += mega_findCard (pHostTmpl, PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID3, BOARD_QUARTZ); mega_reorder_hosts (); #ifdef CONFIG_PROC_FS if (count) { #if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0) /*0x20300 */ mega_proc_dir_entry = proc_mkdir ("megaraid", &proc_root); #else mega_proc_dir_entry = create_proc_entry ("megaraid", S_IFDIR | S_IRUGO | S_IXUGO, &proc_root); #endif if (!mega_proc_dir_entry) printk ("megaraid: failed to create megaraid root\n"); else for (ctlridx = 0; ctlridx < count; ctlridx++) mega_create_proc_entry (ctlridx, mega_proc_dir_entry); } #endif /* * Register the driver as a character device, for applications to access * it for ioctls. * Ideally, this should go in the init_module() routine, but since it is * hidden in the file "scsi_module.c" ( included in the end ), we define * it here * First argument (major) to register_chrdev implies a dynamic major * number allocation. */ if (count) { major = register_chrdev (0, "megadev", &megadev_fops); /* * Register the Shutdown Notification hook in kernel */ if (register_reboot_notifier (&mega_notifier)) { printk ("MegaRAID Shutdown routine not registered!!\n"); } init_MUTEX (&mimd_entry_mtx); } return count; } /*--------------------------------------------------------------------- * Release the controller's resources *---------------------------------------------------------------------*/ int megaraid_release (struct Scsi_Host *pSHost) { mega_host_config *megaCfg; mega_mailbox *mbox; u_char mboxData[16]; int i; megaCfg = (mega_host_config *) pSHost->hostdata; mbox = (mega_mailbox *) mboxData; /* Flush cache to disk */ memset (mbox, 0, 16); mboxData[0] = 0xA; free_irq (megaCfg->host->irq, megaCfg); /* Must be freed first, otherwise extra interrupt is generated */ /* Issue a blocking (interrupts disabled) command to the card */ megaIssueCmd (megaCfg, mboxData, NULL, 0); /* Free our resources */ if (megaCfg->flag & BOARD_QUARTZ) { iounmap ((void *) megaCfg->base); } else { release_region (megaCfg->host->io_port, 16); } mega_freeSgList (megaCfg); pci_free_consistent (megaCfg->dev, sizeof (mega_mailbox64), (void *) megaCfg->mailbox64ptr, megaCfg->dma_handle64); #ifdef CONFIG_PROC_FS if (megaCfg->controller_proc_dir_entry) { remove_proc_entry ("stat", megaCfg->controller_proc_dir_entry); remove_proc_entry ("status", megaCfg->controller_proc_dir_entry); remove_proc_entry ("config", megaCfg->controller_proc_dir_entry); remove_proc_entry ("mailbox", megaCfg->controller_proc_dir_entry); for (i = 0; i < numCtlrs; i++) { char buf[12] = { 0 }; sprintf (buf, "%d", i); remove_proc_entry (buf, mega_proc_dir_entry); } remove_proc_entry ("megaraid", &proc_root); } #endif /* * Release the controller memory. A word of warning this frees * hostdata and that includes megaCfg-> so be careful what you * dereference beyond this point */ scsi_unregister (pSHost); /* * Unregister the character device interface to the driver. Ideally this * should have been done in cleanup_module routine. Since this is hidden * in file "scsi_module.c", we do it here. * major is the major number of the character device returned by call to * register_chrdev() routine. */ unregister_chrdev (major, "megadev"); unregister_reboot_notifier (&mega_notifier); return 0; } static int mega_is_bios_enabled (mega_host_config * megacfg) { mega_mailbox *mboxpnt; unsigned char mbox[16]; int ret; mboxpnt = (mega_mailbox *) mbox; memset (mbox, 0, sizeof (mbox)); memset ((void *) megacfg->mega_buffer, 0, sizeof (megacfg->mega_buffer)); /* * issue command to find out if the BIOS is enabled for this controller */ mbox[0] = IS_BIOS_ENABLED; mbox[2] = GET_BIOS; mboxpnt->xferaddr = virt_to_bus ((void *) megacfg->mega_buffer); ret = megaIssueCmd (megacfg, mbox, NULL, 0); return (*(char *) megacfg->mega_buffer); } /* * Find out what channels are RAID/SCSI */ void mega_enum_raid_scsi(mega_host_config *megacfg) { mega_mailbox *mboxp; unsigned char mbox[16]; int i; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) dma_addr_t dma_handle; #endif mboxp = (mega_mailbox *)mbox; memset(mbox, 0, sizeof(mbox)); /* * issue command to find out what channels are raid/scsi */ mbox[0] = CHNL_CLASS; mbox[2] = GET_CHNL_CLASS; memset((void *)megacfg->mega_buffer, 0, sizeof(megacfg->mega_buffer)); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) dma_handle = pci_map_single(megacfg->dev, (void *)megacfg->mega_buffer, (2 * 1024L), PCI_DMA_FROMDEVICE); mboxp->xferaddr = dma_handle; #else mboxp->xferaddr = virt_to_bus((void *)megacfg->mega_buffer); #endif /* * Non-ROMB firware fail this command, so all channels * must be shown RAID */ if( megaIssueCmd(megacfg, mbox, NULL, 0) == 0 ) { mega_ch_class = *((char *)megacfg->mega_buffer); for( i = 0; i < NVIRT_CHAN; i++ ) { /* logical drives channel is RAID */ mega_ch_class |= (0x01 << (megacfg->productInfo.SCSIChanPresent+i)); } } else { mega_ch_class = 0xFF; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pci_unmap_single(megacfg->dev, dma_handle, (2 * 1024L), PCI_DMA_FROMDEVICE); #endif } /* * get the boot logical drive number if enabled */ void mega_get_boot_ldrv(mega_host_config *megacfg) { mega_mailbox *mboxp; unsigned char mbox[16]; struct private_bios_data *prv_bios_data; u16 cksum = 0; char *cksum_p; int i; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) dma_addr_t dma_handle; #endif mboxp = (mega_mailbox *)mbox; memset(mbox, 0, sizeof(mbox)); mbox[0] = BIOS_PVT_DATA; mbox[2] = GET_BIOS_PVT_DATA; memset((void *)megacfg->mega_buffer, 0, sizeof(megacfg->mega_buffer)); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) dma_handle = pci_map_single(megacfg->dev, (void *)megacfg->mega_buffer, (2 * 1024L), PCI_DMA_FROMDEVICE); mboxp->xferaddr = dma_handle; #else mboxp->xferaddr = virt_to_bus((void *)megacfg->mega_buffer); #endif megacfg->boot_ldrv_enabled = 0; megacfg->boot_ldrv = 0; if( megaIssueCmd(megacfg, mbox, NULL, 0) == 0 ) { prv_bios_data = (struct private_bios_data *)megacfg->mega_buffer; cksum = 0; cksum_p = (char *)prv_bios_data; for( i = 0; i < 14; i++ ) { cksum += (u16)(*cksum_p++); } if( prv_bios_data->cksum == (u16)(0-cksum) ) { megacfg->boot_ldrv_enabled = 1; megacfg->boot_ldrv = prv_bios_data->boot_ldrv; } } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pci_unmap_single(megacfg->dev, dma_handle, (2 * 1024L), PCI_DMA_FROMDEVICE); #endif } static void mega_reorder_hosts (void) { struct Scsi_Host *shpnt; struct Scsi_Host *shone; struct Scsi_Host *shtwo; mega_host_config *boot_host; int i; /* * Find the (first) host which has it's BIOS enabled */ boot_host = NULL; for (i = 0; i < MAX_CONTROLLERS; i++) { if (mega_hbas[i].is_bios_enabled) { boot_host = mega_hbas[i].hostdata_addr; break; } } if (boot_host == NULL) { printk (KERN_WARNING "megaraid: no BIOS enabled.\n"); return; } /* * Traverse through the list of SCSI hosts for our HBA locations */ shone = shtwo = NULL; for (shpnt = scsi_hostlist; shpnt; shpnt = shpnt->next) { /* Is it one of ours? */ for (i = 0; i < MAX_CONTROLLERS; i++) { if ((mega_host_config *) shpnt->hostdata == mega_hbas[i].hostdata_addr) { /* Does this one has BIOS enabled */ if (mega_hbas[i].hostdata_addr == boot_host) { /* Are we first */ if (shtwo == NULL) /* Yes! */ return; else { /* :-( */ shone = shpnt; } } else { if (!shtwo) { /* were we here before? xchng first */ shtwo = shpnt; } } break; } } /* * Have we got the boot host and one which does not have the bios * enabled. */ if (shone && shtwo) break; } if (shone && shtwo) { mega_swap_hosts (shone, shtwo); } return; } static void mega_swap_hosts (struct Scsi_Host *shone, struct Scsi_Host *shtwo) { struct Scsi_Host *prevtoshtwo; struct Scsi_Host *prevtoshone; struct Scsi_Host *save = NULL;; /* Are these two nodes adjacent */ if (shtwo->next == shone) { if (shtwo == scsi_hostlist && shone->next == NULL) { /* just two nodes */ scsi_hostlist = shone; shone->next = shtwo; shtwo->next = NULL; } else if (shtwo == scsi_hostlist) { /* first two nodes of the list */ scsi_hostlist = shone; shtwo->next = shone->next; scsi_hostlist->next = shtwo; } else if (shone->next == NULL) { /* last two nodes of the list */ prevtoshtwo = scsi_hostlist; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; prevtoshtwo->next = shone; shone->next = shtwo; shtwo->next = NULL; } else { prevtoshtwo = scsi_hostlist; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; prevtoshtwo->next = shone; shtwo->next = shone->next; shone->next = shtwo; } } else if (shtwo == scsi_hostlist && shone->next == NULL) { /* shtwo at head, shone at tail, not adjacent */ prevtoshone = scsi_hostlist; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; scsi_hostlist = shone; shone->next = shtwo->next; prevtoshone->next = shtwo; shtwo->next = NULL; } else if (shtwo == scsi_hostlist && shone->next != NULL) { /* shtwo at head, shone is not at tail */ prevtoshone = scsi_hostlist; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; scsi_hostlist = shone; prevtoshone->next = shtwo; save = shtwo->next; shtwo->next = shone->next; shone->next = save; } else if (shone->next == NULL) { /* shtwo not at head, shone at tail */ prevtoshtwo = scsi_hostlist; prevtoshone = scsi_hostlist; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; prevtoshtwo->next = shone; shone->next = shtwo->next; prevtoshone->next = shtwo; shtwo->next = NULL; } else { prevtoshtwo = scsi_hostlist; prevtoshone = scsi_hostlist; save = NULL;; while (prevtoshtwo->next != shtwo) prevtoshtwo = prevtoshtwo->next; while (prevtoshone->next != shone) prevtoshone = prevtoshone->next; prevtoshtwo->next = shone; save = shone->next; shone->next = shtwo->next; prevtoshone->next = shtwo; shtwo->next = save; } return; } static inline void mega_freeSgList (mega_host_config * megaCfg) { int i; for (i = 0; i < megaCfg->max_cmds; i++) { if (megaCfg->scbList[i].sgList) pci_free_consistent (megaCfg->dev, sizeof (mega_64sglist) * MAX_SGLIST, megaCfg->scbList[i].sgList, megaCfg->scbList[i]. dma_sghandle64); #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0) /* 0x020400 */ kfree (megaCfg->scbList[i].sgList); /* free sgList */ #endif } } /*---------------------------------------------- * Get information about the card/driver *----------------------------------------------*/ const char *megaraid_info (struct Scsi_Host *pSHost) { static char buffer[512]; mega_host_config *megaCfg; megaCfg = (mega_host_config *) pSHost->hostdata; sprintf (buffer, "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", megaCfg->fwVer, megaCfg->productInfo.MaxConcCmds, megaCfg->host->max_id, megaCfg->host->max_channel, megaCfg->host->max_lun); return buffer; } /*----------------------------------------------------------------- * Perform a SCSI command * Mailbox area: * 00 01 command * 01 01 command id * 02 02 # of sectors * 04 04 logical bus address * 08 04 physical buffer address * 0C 01 logical drive # * 0D 01 length of scatter/gather list * 0E 01 reserved * 0F 01 mailbox busy * 10 01 numstatus byte * 11 01 status byte *-----------------------------------------------------------------*/ int megaraid_queue (Scsi_Cmnd * SCpnt, void (*pktComp) (Scsi_Cmnd *)) { DRIVER_LOCK_T mega_host_config * megaCfg; mega_scb *pScb; char *user_area = NULL; megaCfg = (mega_host_config *) SCpnt->host->hostdata; DRIVER_LOCK (megaCfg); if (!(megaCfg->flag & (1L << SCpnt->channel))) { if (SCpnt->channel < megaCfg->productInfo.SCSIChanPresent) printk ( KERN_NOTICE "scsi%d: scanning channel %d for devices.\n", megaCfg->host->host_no, SCpnt->channel); else printk ( KERN_NOTICE "scsi%d: scanning virtual channel %d for logical drives.\n", megaCfg->host->host_no, SCpnt->channel-megaCfg->productInfo.SCSIChanPresent+1); megaCfg->flag |= (1L << SCpnt->channel); } SCpnt->scsi_done = pktComp; if (mega_driver_ioctl (megaCfg, SCpnt)) return 0; /* If driver in abort or reset.. cancel this command */ if (megaCfg->flag & IN_ABORT) { SCpnt->result = (DID_ABORT << 16); /* Add Scsi_Command to end of completed queue */ if (megaCfg->qCompletedH == NULL) { megaCfg->qCompletedH = megaCfg->qCompletedT = SCpnt; } else { megaCfg->qCompletedT->host_scribble = (unsigned char *) SCpnt; megaCfg->qCompletedT = SCpnt; } megaCfg->qCompletedT->host_scribble = (unsigned char *) NULL; megaCfg->qCcnt++; DRIVER_UNLOCK (megaCfg); return 0; } else if (megaCfg->flag & IN_RESET) { SCpnt->result = (DID_RESET << 16); /* Add Scsi_Command to end of completed queue */ if (megaCfg->qCompletedH == NULL) { megaCfg->qCompletedH = megaCfg->qCompletedT = SCpnt; } else { megaCfg->qCompletedT->host_scribble = (unsigned char *) SCpnt; megaCfg->qCompletedT = SCpnt; } megaCfg->qCompletedT->host_scribble = (unsigned char *) NULL; megaCfg->qCcnt++; DRIVER_UNLOCK (megaCfg); return 0; } megaCfg->flag |= IN_QUEUE; /* Allocate and build a SCB request */ if ((pScb = mega_build_cmd (megaCfg, SCpnt)) != NULL) { /* * Check if the HBA is in quiescent state, e.g., during a delete * logical drive opertion. If it is, queue the commands in the * internal queue until the delete operation is complete. */ if( ! megaCfg->quiescent ) { /* Add SCB to the head of the pending queue */ if (megaCfg->qPendingH == NULL) { megaCfg->qPendingH = megaCfg->qPendingT = pScb; } else { megaCfg->qPendingT->next = pScb; megaCfg->qPendingT = pScb; } megaCfg->qPendingT->next = NULL; megaCfg->qPcnt++; if (mega_runpendq (megaCfg) == -1) { DRIVER_UNLOCK (megaCfg); return 0; } } else { /* Add SCB to the internal queue */ if (megaCfg->int_qh == NULL) { megaCfg->int_qh = megaCfg->int_qt = pScb; } else { megaCfg->int_qt->next = pScb; megaCfg->int_qt = pScb; } megaCfg->int_qt->next = NULL; megaCfg->int_qlen++; } if (pScb->SCpnt->cmnd[0] == M_RD_IOCTL_CMD_NEW) { init_MUTEX_LOCKED (&pScb->ioctl_sem); spin_unlock_irq (&io_request_lock); down (&pScb->ioctl_sem); user_area = (char *)*((u32*)&pScb->SCpnt->cmnd[4]); if (copy_to_user (user_area, pScb->buff_ptr, pScb->iDataSize)) { printk ("megaraid: Error copying ioctl return value to user buffer.\n"); pScb->SCpnt->result = (DID_ERROR << 16); } spin_lock_irq (&io_request_lock); DRIVER_LOCK (megaCfg); kfree (pScb->buff_ptr); pScb->buff_ptr = NULL; mega_cmd_done (megaCfg, pScb, pScb->SCpnt->result); mega_rundoneq (megaCfg); mega_runpendq (megaCfg); DRIVER_UNLOCK (megaCfg); } megaCfg->flag &= ~IN_QUEUE; } DRIVER_UNLOCK (megaCfg); return 0; } /*---------------------------------------------------------------------- * Issue a blocking command to the controller *----------------------------------------------------------------------*/ volatile static int internal_done_flag = 0; volatile static int internal_done_errcode = 0; static DECLARE_WAIT_QUEUE_HEAD (internal_wait); static void internal_done (Scsi_Cmnd * SCpnt) { internal_done_errcode = SCpnt->result; internal_done_flag++; wake_up (&internal_wait); } /* shouldn't be used, but included for completeness */ int megaraid_command (Scsi_Cmnd * SCpnt) { internal_done_flag = 0; /* Queue command, and wait until it has completed */ megaraid_queue (SCpnt, internal_done); while (!internal_done_flag) { interruptible_sleep_on (&internal_wait); } return internal_done_errcode; } /*--------------------------------------------------------------------- * Abort a previous SCSI request *---------------------------------------------------------------------*/ int megaraid_abort (Scsi_Cmnd * SCpnt) { mega_host_config *megaCfg; int rc; /*, idx; */ mega_scb *pScb; rc = SCSI_ABORT_NOT_RUNNING; megaCfg = (mega_host_config *) SCpnt->host->hostdata; megaCfg->flag |= IN_ABORT; for (pScb = megaCfg->qPendingH; pScb; pScb = pScb->next) { if (pScb->SCpnt == SCpnt) { /* Found an aborting command */ #if DEBUG showMbox (pScb); #endif /* * If the command is queued to be issued to the firmware, abort the scsi cmd, * If the command is already aborted in a previous call to the _abort entry * point, return SCSI_ABORT_SNOOZE, suggesting a reset. * If the command is issued to the firmware, which might complete after * some time, we will mark the scb as aborted, and return to the mid layer, * that abort could not be done. * In the ISR, when this command actually completes, we will perform a normal * completion. * * Oct 27, 1999 */ switch (pScb->state) { case SCB_ABORTED: /* Already aborted */ rc = SCSI_ABORT_SNOOZE; break; case SCB_ISSUED: /* Waiting on ISR result */ rc = SCSI_ABORT_NOT_RUNNING; pScb->state = SCB_ABORTED; break; case SCB_ACTIVE: /* still on the pending queue */ mega_freeSCB (megaCfg, pScb); SCpnt->result = (DID_ABORT << 16); if (megaCfg->qCompletedH == NULL) { megaCfg->qCompletedH = megaCfg->qCompletedT = SCpnt; } else { megaCfg->qCompletedT->host_scribble = (unsigned char *) SCpnt; megaCfg->qCompletedT = SCpnt; } megaCfg->qCompletedT->host_scribble = (unsigned char *) NULL; megaCfg->qCcnt++; rc = SCSI_ABORT_SUCCESS; break; default: printk ("megaraid_abort: unknown command state!!\n"); rc = SCSI_ABORT_NOT_RUNNING; break; } break; } } megaCfg->flag &= ~IN_ABORT; #if DEBUG if (megaCfg->flag & IN_QUEUE) printk ("ma:flag is in queue\n"); if (megaCfg->qCompletedH == NULL) printk ("ma:qchead == null\n"); #endif /* * This is required here to complete any completed requests to be communicated * over to the mid layer. * Calling just mega_rundoneq() did not work. */ if (megaCfg->qCompletedH) { SCpnt = megaCfg->qCompletedH; megaCfg->qCompletedH = (Scsi_Cmnd *) SCpnt->host_scribble; megaCfg->qCcnt--; SCpnt->host_scribble = (unsigned char *) NULL; /* Callback */ callDone (SCpnt); } mega_rundoneq (megaCfg); return rc; } /*--------------------------------------------------------------------- * Reset a previous SCSI request *---------------------------------------------------------------------*/ int megaraid_reset (Scsi_Cmnd * SCpnt, unsigned int rstflags) { mega_host_config *megaCfg; int idx; int rc; mega_scb *pScb; rc = SCSI_RESET_NOT_RUNNING; megaCfg = (mega_host_config *) SCpnt->host->hostdata; megaCfg->flag |= IN_RESET; printk ("megaraid_RESET: %.08lx cmd=%.02x <c=%d.t=%d.l=%d>, flag = %x\n", SCpnt->serial_number, SCpnt->cmnd[0], SCpnt->channel, SCpnt->target, SCpnt->lun, rstflags); TRACE (("RESET: %.08lx %.02x <%d.%d.%d>\n", SCpnt->serial_number, SCpnt->cmnd[0], SCpnt->channel, SCpnt->target, SCpnt->lun)); /* * Walk list of SCBs for any that are still outstanding */ for (idx = 0; idx < megaCfg->max_cmds; idx++) { if (megaCfg->scbList[idx].state != SCB_FREE) { SCpnt = megaCfg->scbList[idx].SCpnt; pScb = &megaCfg->scbList[idx]; if (SCpnt != NULL) { pScb->state = SCB_RESET; break; } } } megaCfg->flag &= ~IN_RESET; mega_rundoneq (megaCfg); return rc; } #ifdef CONFIG_PROC_FS /* Following code handles /proc fs */ static int proc_printf (mega_host_config * megaCfg, const char *fmt, ...) { va_list args; int i; if (megaCfg->procidx > PROCBUFSIZE) return 0; va_start (args, fmt); i = vsprintf ((megaCfg->procbuf + megaCfg->procidx), fmt, args); va_end (args); megaCfg->procidx += i; return i; } static int proc_read_config (char *page, char **start, off_t offset, int count, int *eof, void *data) { mega_host_config *megaCfg = (mega_host_config *) data; *start = page; if (megaCfg->productInfo.ProductName[0] != 0) proc_printf (megaCfg, "%s\n", megaCfg->productInfo.ProductName); proc_printf (megaCfg, "Controller Type: "); if (megaCfg->flag & BOARD_QUARTZ) proc_printf (megaCfg, "438/466/467/471/493\n"); else proc_printf (megaCfg, "418/428/434\n"); if (megaCfg->flag & BOARD_40LD) proc_printf (megaCfg, "Controller Supports 40 Logical Drives\n"); if (megaCfg->flag & BOARD_64BIT) proc_printf (megaCfg, "Controller / Driver uses 64 bit memory addressing\n"); proc_printf (megaCfg, "Base = %08x, Irq = %d, ", megaCfg->base, megaCfg->host->irq); proc_printf (megaCfg, "Logical Drives = %d, Channels = %d\n", megaCfg->numldrv, megaCfg->productInfo.SCSIChanPresent); proc_printf (megaCfg, "Version =%s:%s, DRAM = %dMb\n", megaCfg->fwVer, megaCfg->biosVer, megaCfg->productInfo.DramSize); proc_printf (megaCfg, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", megaCfg->productInfo.MaxConcCmds, megaCfg->max_cmds); COPY_BACK; return count; } static int proc_read_stat (char *page, char **start, off_t offset, int count, int *eof, void *data) { int i; mega_host_config *megaCfg = (mega_host_config *) data; *start = page; proc_printf (megaCfg, "Statistical Information for this controller\n"); proc_printf (megaCfg, "Interrupts Collected = %lu\n", megaCfg->nInterrupts); for (i = 0; i < megaCfg->numldrv; i++) { proc_printf (megaCfg, "Logical Drive %d:\n", i); proc_printf (megaCfg, "\tReads Issued = %lu, Writes Issued = %lu\n", megaCfg->nReads[i], megaCfg->nWrites[i]); proc_printf (megaCfg, "\tSectors Read = %lu, Sectors Written = %lu\n\n", megaCfg->nReadBlocks[i], megaCfg->nWriteBlocks[i]); } COPY_BACK; return count; } static int proc_read_status (char *page, char **start, off_t offset, int count, int *eof, void *data) { mega_host_config *megaCfg = (mega_host_config *) data; *start = page; proc_printf (megaCfg, "TBD\n"); COPY_BACK; return count; } static int proc_read_mbox (char *page, char **start, off_t offset, int count, int *eof, void *data) { mega_host_config *megaCfg = (mega_host_config *) data; volatile mega_mailbox *mbox = megaCfg->mbox; *start = page; proc_printf (megaCfg, "Contents of Mail Box Structure\n"); proc_printf (megaCfg, " Fw Command = 0x%02x\n", mbox->cmd); proc_printf (megaCfg, " Cmd Sequence = 0x%02x\n", mbox->cmdid); proc_printf (megaCfg, " No of Sectors= %04d\n", mbox->numsectors); proc_printf (megaCfg, " LBA = 0x%02x\n", mbox->lba); proc_printf (megaCfg, " DTA = 0x%08x\n", mbox->xferaddr); proc_printf (megaCfg, " Logical Drive= 0x%02x\n", mbox->logdrv); proc_printf (megaCfg, " No of SG Elmt= 0x%02x\n", mbox->numsgelements); proc_printf (megaCfg, " Busy = %01x\n", mbox->busy); proc_printf (megaCfg, " Status = 0x%02x\n", mbox->status); /* proc_printf(megaCfg, "Dump of MailBox\n"); for (i = 0; i < 16; i++) proc_printf(megaCfg, "%02x ",*(mbox + i)); proc_printf(megaCfg, "\n\nNumber of Status = %02d\n",mbox->numstatus); for (i = 0; i < 46; i++) { proc_printf(megaCfg,"%02d ",*(mbox + 16 + i)); if (i%16) proc_printf(megaCfg,"\n"); } if (!mbox->numsgelements) { dta = phys_to_virt(mbox->xferaddr); for (i = 0; i < mbox->numsgelements; i++) if (dta) { proc_printf(megaCfg,"Addr = %08x\n", (ulong)*(dta + i)); proc_printf(megaCfg,"Length = %08x\n", (ulong)*(dta + i + 4)); } }*/ COPY_BACK; return count; } #if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0) /*0x20300 */ #define CREATE_READ_PROC(string, fxn) create_proc_read_entry(string, \ S_IRUSR | S_IFREG,\ controller_proc_dir_entry,\ fxn, megaCfg) #else #define CREATE_READ_PROC(string, fxn) create_proc_read_entry(string,S_IRUSR | S_IFREG, controller_proc_dir_entry, fxn, megaCfg) static struct proc_dir_entry * create_proc_read_entry (const char *string, int mode, struct proc_dir_entry *parent, read_proc_t * fxn, mega_host_config * megaCfg) { struct proc_dir_entry *temp = NULL; temp = kmalloc (sizeof (struct proc_dir_entry), GFP_KERNEL); if (!temp) return NULL; memset (temp, 0, sizeof (struct proc_dir_entry)); if ((temp->name = kmalloc (strlen (string) + 1, GFP_KERNEL)) == NULL) { kfree (temp); return NULL; } strcpy ((char *) temp->name, string); temp->namelen = strlen (string); temp->mode = mode; /*S_IFREG | S_IRUSR */ ; temp->data = (void *) megaCfg; temp->read_proc = fxn; proc_register (parent, temp); return temp; } #endif static void mega_create_proc_entry (int index, struct proc_dir_entry *parent) { u_char string[64] = { 0 }; mega_host_config *megaCfg = megaCtlrs[index]; struct proc_dir_entry *controller_proc_dir_entry = NULL; sprintf (string, "%d", index); #if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0) /*0x20300 */ controller_proc_dir_entry = megaCfg->controller_proc_dir_entry = proc_mkdir (string, parent); #else controller_proc_dir_entry = megaCfg->controller_proc_dir_entry = create_proc_entry (string, S_IFDIR | S_IRUGO | S_IXUGO, parent); #endif if (!controller_proc_dir_entry) printk ("\nmegaraid: proc_mkdir failed\n"); else { megaCfg->proc_read = CREATE_READ_PROC ("config", proc_read_config); megaCfg->proc_status = CREATE_READ_PROC ("status", proc_read_status); megaCfg->proc_stat = CREATE_READ_PROC ("stat", proc_read_stat); megaCfg->proc_mbox = CREATE_READ_PROC ("mailbox", proc_read_mbox); } } #endif /* CONFIG_PROC_FS */ /*------------------------------------------------------------- * Return the disk geometry for a particular disk * Input: * Disk *disk - Disk geometry * kdev_t dev - Device node * int *geom - Returns geometry fields * geom[0] = heads * geom[1] = sectors * geom[2] = cylinders *-------------------------------------------------------------*/ int megaraid_biosparam (Disk * disk, kdev_t dev, int *geom) { int heads, sectors, cylinders; mega_host_config *megaCfg; /* Get pointer to host config structure */ megaCfg = (mega_host_config *) disk->device->host->hostdata; if( IS_RAID_CH(disk->device->channel)) { /* Default heads (64) & sectors (32) */ heads = 64; sectors = 32; cylinders = disk->capacity / (heads * sectors); /* Handle extended translation size for logical drives > 1Gb */ if (disk->capacity >= 0x200000) { heads = 255; sectors = 63; cylinders = disk->capacity / (heads * sectors); } /* return result */ geom[0] = heads; geom[1] = sectors; geom[2] = cylinders; } else { if( mega_partsize(disk, dev, geom) == 0 ) return 0; printk(KERN_WARNING "megaraid: invalid partition on this disk on channel %d\n", disk->device->channel); /* Default heads (64) & sectors (32) */ heads = 64; sectors = 32; cylinders = disk->capacity / (heads * sectors); /* Handle extended translation size for logical drives > 1Gb */ if (disk->capacity >= 0x200000) { heads = 255; sectors = 63; cylinders = disk->capacity / (heads * sectors); } /* return result */ geom[0] = heads; geom[1] = sectors; geom[2] = cylinders; } return 0; } /* * Function : static int mega_partsize(Disk * disk, kdev_t dev, int *geom) * * Purpose : to determine the BIOS mapping used to create the partition * table, storing the results (cyls, hds, and secs) in geom * * Note: Code is picked from scsicam.h * * Returns : -1 on failure, 0 on success. */ static int mega_partsize(Disk * disk, kdev_t dev, int *geom) { struct buffer_head *bh; struct partition *p, *largest = NULL; int i, largest_cyl; int heads, cyls, sectors; int capacity = disk->capacity; int ma = MAJOR(dev); int mi = (MINOR(dev) & ~0xf); int block = 1024; if(blksize_size[ma]) block = blksize_size[ma][mi]; if(!(bh = bread(MKDEV(ma,mi), 0, block))) return -1; if( *(unsigned short *)(bh->b_data + 510) == 0xAA55 ) { for( largest_cyl = -1, p = (struct partition *)(0x1BE + bh->b_data), i = 0; i < 4; ++i, ++p) { if (!p->sys_ind) continue; cyls = p->end_cyl + ((p->end_sector & 0xc0) << 2); if(cyls >= largest_cyl) { largest_cyl = cyls; largest = p; } } } if (largest) { heads = largest->end_head + 1; sectors = largest->end_sector & 0x3f; if (heads == 0 || sectors == 0) { brelse(bh); return -1; } cyls = capacity/(heads * sectors); geom[0] = heads; geom[1] = sectors; geom[2] = cyls; brelse(bh); return 0; } brelse(bh); return -1; } /* * This routine will be called when the use has done a forced shutdown on the * system. Flush the Adapter cache, that's the most we can do. */ static int megaraid_reboot_notify (struct notifier_block *this, unsigned long code, void *unused) { struct Scsi_Host *pSHost; mega_host_config *megaCfg; mega_mailbox *mbox; u_char mboxData[16]; int i; if (code == SYS_DOWN || code == SYS_HALT) { for (i = 0; i < numCtlrs; i++) { pSHost = megaCtlrs[i]->host; megaCfg = (mega_host_config *) pSHost->hostdata; mbox = (mega_mailbox *) mboxData; /* Flush cache to disk */ memset (mbox, 0, 16); mboxData[0] = 0xA; /* * Free irq, otherwise extra interrupt is generated */ free_irq (megaCfg->host->irq, megaCfg); /* * Issue a blocking (interrupts disabled) command to * the card */ megaIssueCmd (megaCfg, mboxData, NULL, 0); } } return NOTIFY_DONE; } static int mega_init_scb (mega_host_config * megacfg) { int idx; #if DEBUG if (megacfg->max_cmds >= MAX_COMMANDS) { printk ("megaraid:ctlr max cmds = %x : MAX_CMDS = %x", megacfg->max_cmds, MAX_COMMANDS); } #endif for (idx = megacfg->max_cmds - 1; idx >= 0; idx--) { megacfg->scbList[idx].idx = idx; /* * ISR will make this flag zero to indicate the command has been * completed. This is only for user ioctl calls. Rest of the driver * and the mid-layer operations are not connected with this flag. */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) megacfg->scbList[idx].sgList = pci_alloc_consistent (megacfg->dev, sizeof (mega_64sglist) * MAX_SGLIST, &(megacfg->scbList[idx]. dma_sghandle64)); megacfg->scbList[idx].sg64List = (mega_64sglist *) megacfg->scbList[idx].sgList; #else megacfg->scbList[idx].sgList = kmalloc (sizeof (mega_sglist) * MAX_SGLIST, GFP_ATOMIC | GFP_DMA); #endif if (megacfg->scbList[idx].sgList == NULL) { printk (KERN_WARNING "Can't allocate sglist for id %d\n", idx); mega_freeSgList (megacfg); return -1; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) megacfg->scbList[idx].pthru = pci_alloc_consistent (megacfg->dev, sizeof (mega_passthru), &(megacfg->scbList[idx]. dma_passthruhandle64)); if (megacfg->scbList[idx].pthru == NULL) { printk (KERN_WARNING "Can't allocate passthru for id %d\n", idx); } megacfg->scbList[idx].epthru = pci_alloc_consistent( megacfg->dev, sizeof(mega_ext_passthru), &(megacfg->scbList[idx].dma_ext_passthruhandle64) ); if (megacfg->scbList[idx].epthru == NULL) { printk (KERN_WARNING "Can't allocate extended passthru for id %d\n", idx); } /* * Allocate a 256 Byte Bounce Buffer for handling INQ/RD_CAPA */ megacfg->scbList[idx].bounce_buffer = pci_alloc_consistent (megacfg->dev, 256, &(megacfg->scbList[idx]. dma_bounce_buffer)); if (!megacfg->scbList[idx].bounce_buffer) printk ("megaraid: allocation for bounce buffer failed\n"); megacfg->scbList[idx].dma_type = M_RD_DMA_TYPE_NONE; #endif if (idx < MAX_COMMANDS) { /* * Link to free list * lock not required since we are loading the driver, so no * commands possible right now. */ enq_scb_freelist (megacfg, &megacfg->scbList[idx], NO_LOCK, INTR_ENB); } } return 0; } /* * Enqueues a SCB */ static void enq_scb_freelist (mega_host_config * megacfg, mega_scb * scb, int lock, int intr) { if (lock == INTERNAL_LOCK || intr == INTR_DIS) { if (intr == INTR_DIS) spin_lock_irq (&megacfg->lock_free); else spin_lock (&megacfg->lock_free); } scb->state = SCB_FREE; scb->SCpnt = NULL; if (megacfg->qFreeH == (mega_scb *) NULL) { megacfg->qFreeH = megacfg->qFreeT = scb; } else { megacfg->qFreeT->next = scb; megacfg->qFreeT = scb; } megacfg->qFreeT->next = NULL; megacfg->qFcnt++; if (lock == INTERNAL_LOCK || intr == INTR_DIS) { if (intr == INTR_DIS) spin_unlock_irq (&megacfg->lock_free); else spin_unlock (&megacfg->lock_free); } } /* * Routines for the character/ioctl interface to the driver */ static int megadev_open (struct inode *inode, struct file *filep) { MOD_INC_USE_COUNT; return 0; /* success */ } static int megadev_ioctl_entry (struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg) { int ret = -1; /* * We do not allow parallel ioctls to the driver as of now. */ down (&mimd_entry_mtx); ret = megadev_ioctl (inode, filep, cmd, arg); up (&mimd_entry_mtx); return ret; } static int megadev_ioctl (struct inode *inode, struct file *filep, unsigned int cmd, unsigned long arg) { int adapno; kdev_t dev; u32 inlen; struct uioctl_t ioc; char *kvaddr = NULL; int nadap = numCtlrs; u8 opcode; u32 outlen; int ret; u8 subopcode; Scsi_Cmnd *scsicmd; struct Scsi_Host *shpnt; char *uaddr; struct uioctl_t *uioc; dma_addr_t dma_addr; u32 length; mega_host_config *megacfg = NULL; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /* 0x020400 */ struct pci_dev pdev; struct pci_dev *pdevp = &pdev; #else char *pdevp = NULL; #endif IO_LOCK_T; if (!inode || !(dev = inode->i_rdev)) return -EINVAL; if (_IOC_TYPE (cmd) != MEGAIOC_MAGIC) return (-EINVAL); /* * Get the user ioctl structure */ ret = verify_area (VERIFY_WRITE, (char *) arg, sizeof (struct uioctl_t)); if (ret) return ret; if(copy_from_user (&ioc, (char *) arg, sizeof (struct uioctl_t))) return -EFAULT; /* * The first call the applications should make is to find out the * number of controllers in the system. The next logical call should * be for getting the list of controllers in the system as detected * by the driver. */ /* * Get the opcode and subopcode for the commands */ opcode = ioc.ui.fcs.opcode; subopcode = ioc.ui.fcs.subopcode; switch (opcode) { case M_RD_DRIVER_IOCTL_INTERFACE: switch (subopcode) { case MEGAIOC_QDRVRVER: /* Query driver version */ put_user (driver_ver, (u32 *) ioc.data); return 0; case MEGAIOC_QNADAP: /* Get # of adapters */ put_user (nadap, (int *) ioc.data); return nadap; case MEGAIOC_QADAPINFO: /* Get adapter information */ /* * which adapter? */ adapno = ioc.ui.fcs.adapno; /* * The adapter numbers do not start with 0, at least in * the user space. This is just to make sure, 0 is not the * default value which will refer to adapter 1. So the * user needs to make use of macros MKADAP() and GETADAP() * (See megaraid.h) while making ioctl() call. */ adapno = GETADAP (adapno); if (adapno >= numCtlrs) return (-ENODEV); ret = verify_area (VERIFY_WRITE, ioc.data, sizeof (struct mcontroller)); if (ret) return ret; /* * Copy struct mcontroller to user area */ copy_to_user (ioc.data, mcontroller + adapno, sizeof (struct mcontroller)); return 0; default: return (-EINVAL); } /* inner switch */ break; case M_RD_IOCTL_CMD_NEW: /* * Deletion of logical drives is only handled in 0x80 commands */ if( ioc.mbox[0] == FC_DEL_LOGDRV && ioc.mbox[2] == OP_DEL_LOGDRV ) { return -EINVAL; } /* which adapter? */ adapno = ioc.ui.fcs.adapno; /* See comment above: MEGAIOC_QADAPINFO */ adapno = GETADAP(adapno); if (adapno >= numCtlrs) return(-ENODEV); length = ioc.ui.fcs.length; /* Check for zero length buffer or very large buffers */ if( !length || length > 32*1024 ) return -EINVAL; /* save the user address */ uaddr = ioc.ui.fcs.buffer; /* * For M_RD_IOCTL_CMD_NEW commands, the fields outlen and inlen of * uioctl_t structure are treated as flags. If outlen is 1, the * data is transferred from the device and if inlen is 1, the data * is transferred to the device. */ outlen = ioc.outlen; inlen = ioc.inlen; if(outlen) { ret = verify_area(VERIFY_WRITE, (char *)ioc.ui.fcs.buffer, length); if (ret) return ret; } if(inlen) { ret = verify_area(VERIFY_READ, (char *) ioc.ui.fcs.buffer, length); if (ret) return ret; } /* * Find this host */ for( shpnt = scsi_hostlist; shpnt; shpnt = shpnt->next ) { if( shpnt->hostdata == (unsigned long *)megaCtlrs[adapno] ) { megacfg = (mega_host_config *)shpnt->hostdata; break; } } if(shpnt == NULL) return -ENODEV; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) scsicmd = (Scsi_Cmnd *)kmalloc(sizeof(Scsi_Cmnd), GFP_KERNEL|GFP_DMA); #else scsicmd = (Scsi_Cmnd *)scsi_init_malloc(sizeof(Scsi_Cmnd), GFP_ATOMIC | GFP_DMA); #endif if(scsicmd == NULL) return -ENOMEM; memset(scsicmd, 0, sizeof(Scsi_Cmnd)); scsicmd->host = shpnt; if( outlen || inlen ) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pdevp = &pdev; memcpy(pdevp, megacfg->dev, sizeof(struct pci_dev)); pdevp->dma_mask = 0xffffffff; #else pdevp = NULL; #endif kvaddr = dma_alloc_consistent(pdevp, length, &dma_addr); if( kvaddr == NULL ) { printk(KERN_WARNING "megaraid:allocation failed\n"); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /*0x20400 */ kfree(scsicmd); #else scsi_init_free((char *)scsicmd, sizeof(Scsi_Cmnd)); #endif return -ENOMEM; } ioc.ui.fcs.buffer = kvaddr; if (inlen) { /* copyin the user data */ copy_from_user(kvaddr, (char *)uaddr, length ); } } scsicmd->cmnd[0] = MEGADEVIOC; scsicmd->request_buffer = (void *)&ioc; init_MUTEX_LOCKED(&mimd_ioctl_sem); IO_LOCK; megaraid_queue(scsicmd, megadev_ioctl_done); IO_UNLOCK; down(&mimd_ioctl_sem); if( !scsicmd->result && outlen ) { copy_to_user(uaddr, kvaddr, length); } /* * copyout the result */ uioc = (struct uioctl_t *)arg; if( ioc.mbox[0] == MEGA_MBOXCMD_PASSTHRU ) { put_user( scsicmd->result, &uioc->pthru.scsistatus ); } else { put_user(1, &uioc->mbox[16]); /* numstatus */ /* status */ put_user (scsicmd->result, &uioc->mbox[17]); } if (kvaddr) { dma_free_consistent(pdevp, length, kvaddr, dma_addr); } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /*0x20400 */ kfree (scsicmd); #else scsi_init_free((char *)scsicmd, sizeof(Scsi_Cmnd)); #endif /* restore the user address */ ioc.ui.fcs.buffer = uaddr; return ret; case M_RD_IOCTL_CMD: /* which adapter? */ adapno = ioc.ui.fcs.adapno; /* See comment above: MEGAIOC_QADAPINFO */ adapno = GETADAP (adapno); if (adapno >= numCtlrs) return (-ENODEV); /* save the user address */ uaddr = ioc.data; outlen = ioc.outlen; inlen = ioc.inlen; if ((outlen >= IOCTL_MAX_DATALEN) || (inlen >= IOCTL_MAX_DATALEN)) return (-EINVAL); if (outlen) { ret = verify_area (VERIFY_WRITE, ioc.data, outlen); if (ret) return ret; } if (inlen) { ret = verify_area (VERIFY_READ, ioc.data, inlen); if (ret) return ret; } /* * Find this host */ for( shpnt = scsi_hostlist; shpnt; shpnt = shpnt->next ) { if( shpnt->hostdata == (unsigned long *)megaCtlrs[adapno] ) { megacfg = (mega_host_config *)shpnt->hostdata; break; } } if(shpnt == NULL) return -ENODEV; /* * ioctls for deleting logical drives is a special case, so check * for it first */ if( ioc.mbox[0] == FC_DEL_LOGDRV && ioc.mbox[2] == OP_DEL_LOGDRV ) { if( !megacfg->support_random_del ) { printk("megaraid: logdrv delete on non supporting f/w.\n"); return -EINVAL; } uioc = (struct uioctl_t *)arg; ret = mega_del_logdrv(megacfg, ioc.mbox[3]); put_user(1, &uioc->mbox[16]); /* numstatus */ put_user(ret, &uioc->mbox[17]); /* status */ /* if deletion failed, let the user know by failing ioctl */ return ret; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) scsicmd = (Scsi_Cmnd *)kmalloc(sizeof(Scsi_Cmnd), GFP_KERNEL|GFP_DMA); #else scsicmd = (Scsi_Cmnd *)scsi_init_malloc(sizeof(Scsi_Cmnd), GFP_ATOMIC | GFP_DMA); #endif if(scsicmd == NULL) return -ENOMEM; memset(scsicmd, 0, sizeof(Scsi_Cmnd)); scsicmd->host = shpnt; if (outlen || inlen) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pdevp = &pdev; memcpy(pdevp, megacfg->dev, sizeof(struct pci_dev)); pdevp->dma_mask = 0xffffffff; #else pdevp = NULL; #endif /* * Allocate a page of kernel space. */ kvaddr = dma_alloc_consistent(pdevp, PAGE_SIZE, &dma_addr); if( kvaddr == NULL ) { printk (KERN_WARNING "megaraid:allocation failed\n"); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) /*0x20400 */ kfree(scsicmd); #else scsi_init_free((char *)scsicmd, sizeof(Scsi_Cmnd)); #endif return -ENOMEM; } ioc.data = kvaddr; if (inlen) { if (ioc.mbox[0] == MEGA_MBOXCMD_PASSTHRU) { /* copyin the user data */ copy_from_user (kvaddr, uaddr, ioc.pthru.dataxferlen); } else { copy_from_user (kvaddr, uaddr, inlen); } } } scsicmd->cmnd[0] = MEGADEVIOC; scsicmd->request_buffer = (void *) &ioc; init_MUTEX_LOCKED (&mimd_ioctl_sem); IO_LOCK; megaraid_queue (scsicmd, megadev_ioctl_done); IO_UNLOCK; down (&mimd_ioctl_sem); if (!scsicmd->result && outlen) { if (ioc.mbox[0] == MEGA_MBOXCMD_PASSTHRU) { copy_to_user (uaddr, kvaddr, ioc.pthru.dataxferlen); } else { copy_to_user (uaddr, kvaddr, outlen); } } /* * copyout the result */ uioc = (struct uioctl_t *) arg; if (ioc.mbox[0] == MEGA_MBOXCMD_PASSTHRU) { put_user (scsicmd->result, &uioc->pthru.scsistatus); } else { put_user (1, &uioc->mbox[16]); /* numstatus */ put_user (scsicmd->result, &uioc->mbox[17]); /* status */ } if (kvaddr) { dma_free_consistent(pdevp, PAGE_SIZE, kvaddr, dma_addr ); } #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) kfree (scsicmd); #else scsi_init_free((char *)scsicmd, sizeof(Scsi_Cmnd)); #endif /* restore user pointer */ ioc.data = uaddr; return ret; default: return (-EINVAL); }/* Outer switch */ return 0; } static void megadev_ioctl_done(Scsi_Cmnd *sc) { up (&mimd_ioctl_sem); } static mega_scb * megadev_doioctl (mega_host_config * megacfg, Scsi_Cmnd * sc) { u8 cmd; struct uioctl_t *ioc = NULL; mega_mailbox *mbox = NULL; mega_ioctl_mbox *mboxioc = NULL; struct mbox_passthru *mboxpthru = NULL; mega_scb *scb = NULL; mega_passthru *pthru = NULL; if ((scb = mega_allocateSCB (megacfg, sc)) == NULL) { sc->result = (DID_ERROR << 16); callDone (sc); return NULL; } ioc = (struct uioctl_t *) sc->request_buffer; memcpy (scb->mboxData, ioc->mbox, sizeof (scb->mboxData)); /* The generic mailbox */ mbox = (mega_mailbox *) ioc->mbox; /* * Get the user command */ cmd = ioc->mbox[0]; switch (cmd) { case MEGA_MBOXCMD_PASSTHRU: /* * prepare the SCB with information from the user ioctl structure */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) pthru = scb->pthru; #else pthru = &scb->pthru; #endif memcpy (pthru, &ioc->pthru, sizeof (mega_passthru)); mboxpthru = (struct mbox_passthru *) scb->mboxData; #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) if (megacfg->flag & BOARD_64BIT) { /* This is just a sample with one element * This if executes onlu on 2.4 kernels */ mboxpthru->dataxferaddr = scb->dma_passthruhandle64; scb->sg64List[0].address = pci_map_single (megacfg->dev, ioc->data, 4096, PCI_DMA_BIDIRECTIONAL); scb->sg64List[0].length = 4096; // TODO: Check this pthru->dataxferaddr = scb->dma_sghandle64; pthru->numsgelements = 1; mboxpthru->cmd = 0xC3; } else { mboxpthru->dataxferaddr = scb->dma_passthruhandle64; pthru->dataxferaddr = pci_map_single (megacfg->dev, ioc->data, 4096, PCI_DMA_BIDIRECTIONAL); pthru->numsgelements = 0; } #else { mboxpthru->dataxferaddr = virt_to_bus (&scb->pthru); pthru->dataxferaddr = virt_to_bus (ioc->data); pthru->numsgelements = 0; } #endif pthru->reqsenselen = 14; break; default: /* Normal command */ mboxioc = (mega_ioctl_mbox *) scb->mboxData; if (ioc->ui.fcs.opcode == M_RD_IOCTL_CMD_NEW) { scb->buff_ptr = ioc->ui.fcs.buffer; scb->iDataSize = ioc->ui.fcs.length; } else { scb->buff_ptr = ioc->data; scb->iDataSize = 4096; // TODO:check it } set_mbox_xfer_addr (megacfg, scb, mboxioc, FROMTO_DEVICE); mboxioc->numsgelements = 0; break; } return scb; } static int megadev_close (struct inode *inode, struct file *filep) { #ifdef MODULE MOD_DEC_USE_COUNT; #endif return 0; } static int mega_support_ext_cdb(mega_host_config *this_hba) { mega_mailbox *mboxpnt; unsigned char mbox[16]; int ret; mboxpnt = (mega_mailbox *) mbox; memset(mbox, 0, sizeof (mbox)); /* * issue command to find out if controller supports extended CDBs. */ mbox[0] = 0xA4; mbox[2] = 0x16; ret = megaIssueCmd(this_hba, mbox, NULL, 0); return !ret; } /* * Find out if this controller supports random deletion and addition of * logical drives */ static int mega_support_random_del(mega_host_config *this_hba) { mega_mailbox *mboxpnt; unsigned char mbox[16]; int ret; mboxpnt = (mega_mailbox *)mbox; memset(mbox, 0, sizeof(mbox)); /* * issue command */ mbox[0] = FC_DEL_LOGDRV; mbox[2] = OP_SUP_DEL_LOGDRV; ret = megaIssueCmd(this_hba, mbox, NULL, 0); return !ret; } static int mega_del_logdrv(mega_host_config *this_hba, int logdrv) { int rval; IO_LOCK_T; DECLARE_WAIT_QUEUE_HEAD(wq); mega_scb *scbp; /* * Stop sending commands to the controller, queue them internally. * When deletion is complete, ISR will flush the queue. */ IO_LOCK; this_hba->quiescent = 1; IO_UNLOCK; while( this_hba->qPcnt ) { sleep_on_timeout( &wq, 1*HZ ); /* sleep for 1s */ } rval = mega_do_del_logdrv(this_hba, logdrv); IO_LOCK; /* * Attach the internal queue to the pending queue */ if( this_hba->qPendingH == NULL ) { /* * If pending queue head is null, make internal queue as * pending queue */ this_hba->qPendingH = this_hba->int_qh; this_hba->qPendingT = this_hba->int_qt; this_hba->qPcnt = this_hba->int_qlen; } else { /* * Append pending queue to internal queue */ if( this_hba->int_qt ) { this_hba->int_qt->next = this_hba->qPendingH; this_hba->qPendingH = this_hba->int_qh; this_hba->qPcnt += this_hba->int_qlen; } } this_hba->int_qh = this_hba->int_qt = NULL; this_hba->int_qlen = 0; /* * If delete operation was successful, add 0x80 to the logical drive * ids for commands in the pending queue. */ if( this_hba->read_ldidmap) { for( scbp = this_hba->qPendingH; scbp; scbp = scbp->next ) { #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) if( scbp->pthru->logdrv < 0x80 ) scbp->pthru->logdrv += 0x80; #else if( scbp->pthru.logdrv < 0x80 ) scbp->pthru.logdrv += 0x80; #endif } } this_hba->quiescent = 0; IO_UNLOCK; return rval; } static int mega_do_del_logdrv(mega_host_config *this_hba, int logdrv) { mega_mailbox *mboxpnt; unsigned char mbox[16]; int rval; mboxpnt = (mega_mailbox *)mbox; memset(mbox, 0, sizeof(mbox)); mbox[0] = FC_DEL_LOGDRV; mbox[2] = OP_DEL_LOGDRV; mbox[3] = logdrv; rval = megaIssueCmd(this_hba, mbox, NULL, 0); /* log this event */ if( rval != 0 ) { printk("megaraid: Attempt to delete logical drive %d failed.", logdrv); return rval; } printk("megaraid: logical drive %d deleted.\n", logdrv); /* * After deleting first logical drive, the logical drives must be * addressed by adding 0x80 to the logical drive id. */ this_hba->read_ldidmap = 1; return rval; } #if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0) void * dma_alloc_consistent(void *dev, size_t size, dma_addr_t *dma_addr) { void *_tv; int npages; int order = 0; /* * How many pages application needs */ npages = size / PAGE_SIZE; /* Do we need one more page */ if(size % PAGE_SIZE) npages++; order = mega_get_order(npages); _tv = (void *)__get_free_pages(GFP_DMA, order); if( _tv != NULL ) { memset(_tv, 0, size); *(dma_addr) = virt_to_bus(_tv); } return _tv; } /* * int mega_get_order(int) * * returns the order to be used as 2nd argument to __get_free_pages() - which * return pages equal to pow(2, order) - AM */ int mega_get_order(int n) { int i = 0; while( pow_2(i++) < n ) ; /* null statement */ return i-1; } /* * int pow_2(int) * * calculates pow(2, i) */ int pow_2(int i) { unsigned int v = 1; while(i--) v <<= 1; return v; } void dma_free_consistent(void *dev, size_t size, void *vaddr, dma_addr_t dma_addr) { int npages; int order = 0; npages = size / PAGE_SIZE; if(size % PAGE_SIZE) npages++; if (npages == 1) order = 0; else if (npages == 2) order = 1; else if (npages <= 4) order = 2; else order = 3; free_pages((unsigned long)vaddr, order); } #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) static #endif /* LINUX VERSION 2.4.XX */ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) || defined(MODULE) Scsi_Host_Template driver_template = MEGARAID; #include "scsi_module.c" #endif /* LINUX VERSION 2.4.XX || MODULE */ /* vi: set ts=4: */ |