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4656 lines
105 KiB
4656 lines
105 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* |
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* Linux MegaRAID device driver |
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* |
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* Copyright (c) 2002 LSI Logic Corporation. |
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* |
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* Copyright (c) 2002 Red Hat, Inc. All rights reserved. |
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* - fixes |
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* - speed-ups (list handling fixes, issued_list, optimizations.) |
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* - lots of cleanups. |
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* |
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* Copyright (c) 2003 Christoph Hellwig <[email protected]> |
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* - new-style, hotplug-aware pci probing and scsi registration |
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* |
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* Version : v2.00.4 Mon Nov 14 14:02:43 EST 2005 - Seokmann Ju |
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* <[email protected]> |
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* |
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* Description: Linux device driver for LSI Logic MegaRAID controller |
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* |
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* Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493 |
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* 518, 520, 531, 532 |
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* |
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* This driver is supported by LSI Logic, with assistance from Red Hat, Dell, |
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* and others. Please send updates to the mailing list |
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* [email protected] . |
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*/ |
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|
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#include <linux/mm.h> |
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#include <linux/fs.h> |
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#include <linux/blkdev.h> |
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#include <linux/uaccess.h> |
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#include <asm/io.h> |
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#include <linux/completion.h> |
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#include <linux/delay.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include <linux/reboot.h> |
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#include <linux/module.h> |
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#include <linux/list.h> |
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#include <linux/interrupt.h> |
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#include <linux/pci.h> |
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#include <linux/init.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/mutex.h> |
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#include <linux/slab.h> |
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#include <scsi/scsicam.h> |
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|
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#include "scsi.h" |
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#include <scsi/scsi_host.h> |
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|
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#include "megaraid.h" |
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#define MEGARAID_MODULE_VERSION "2.00.4" |
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|
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MODULE_AUTHOR ("[email protected]"); |
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MODULE_DESCRIPTION ("LSI Logic MegaRAID legacy driver"); |
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MODULE_LICENSE ("GPL"); |
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MODULE_VERSION(MEGARAID_MODULE_VERSION); |
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|
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static DEFINE_MUTEX(megadev_mutex); |
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static unsigned int max_cmd_per_lun = DEF_CMD_PER_LUN; |
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module_param(max_cmd_per_lun, uint, 0); |
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MODULE_PARM_DESC(max_cmd_per_lun, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)"); |
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static unsigned short int max_sectors_per_io = MAX_SECTORS_PER_IO; |
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module_param(max_sectors_per_io, ushort, 0); |
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MODULE_PARM_DESC(max_sectors_per_io, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)"); |
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static unsigned short int max_mbox_busy_wait = MBOX_BUSY_WAIT; |
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module_param(max_mbox_busy_wait, ushort, 0); |
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MODULE_PARM_DESC(max_mbox_busy_wait, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)"); |
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#define RDINDOOR(adapter) readl((adapter)->mmio_base + 0x20) |
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#define RDOUTDOOR(adapter) readl((adapter)->mmio_base + 0x2C) |
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#define WRINDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x20) |
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#define WROUTDOOR(adapter,value) writel(value, (adapter)->mmio_base + 0x2C) |
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|
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/* |
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* Global variables |
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*/ |
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static int hba_count; |
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static adapter_t *hba_soft_state[MAX_CONTROLLERS]; |
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static struct proc_dir_entry *mega_proc_dir_entry; |
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|
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/* For controller re-ordering */ |
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static struct mega_hbas mega_hbas[MAX_CONTROLLERS]; |
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|
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static long |
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megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); |
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|
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/* |
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* The File Operations structure for the serial/ioctl interface of the driver |
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*/ |
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static const struct file_operations megadev_fops = { |
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.owner = THIS_MODULE, |
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.unlocked_ioctl = megadev_unlocked_ioctl, |
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.open = megadev_open, |
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.llseek = noop_llseek, |
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}; |
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|
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/* |
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* Array to structures for storing the information about the controllers. This |
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* information is sent to the user level applications, when they do an ioctl |
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* for this information. |
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*/ |
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static struct mcontroller mcontroller[MAX_CONTROLLERS]; |
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|
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/* The current driver version */ |
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static u32 driver_ver = 0x02000000; |
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|
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/* major number used by the device for character interface */ |
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static int major; |
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|
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#define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01) |
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|
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/* |
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* Debug variable to print some diagnostic messages |
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*/ |
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static int trace_level; |
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|
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/** |
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* mega_setup_mailbox() |
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* @adapter: pointer to our soft state |
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* |
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* Allocates a 8 byte aligned memory for the handshake mailbox. |
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*/ |
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static int |
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mega_setup_mailbox(adapter_t *adapter) |
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{ |
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unsigned long align; |
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adapter->una_mbox64 = dma_alloc_coherent(&adapter->dev->dev, |
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sizeof(mbox64_t), |
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&adapter->una_mbox64_dma, |
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GFP_KERNEL); |
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if( !adapter->una_mbox64 ) return -1; |
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adapter->mbox = &adapter->una_mbox64->mbox; |
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adapter->mbox = (mbox_t *)((((unsigned long) adapter->mbox) + 15) & |
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(~0UL ^ 0xFUL)); |
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adapter->mbox64 = (mbox64_t *)(((unsigned long)adapter->mbox) - 8); |
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align = ((void *)adapter->mbox) - ((void *)&adapter->una_mbox64->mbox); |
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adapter->mbox_dma = adapter->una_mbox64_dma + 8 + align; |
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/* |
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* Register the mailbox if the controller is an io-mapped controller |
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*/ |
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if( adapter->flag & BOARD_IOMAP ) { |
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|
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outb(adapter->mbox_dma & 0xFF, |
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adapter->host->io_port + MBOX_PORT0); |
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outb((adapter->mbox_dma >> 8) & 0xFF, |
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adapter->host->io_port + MBOX_PORT1); |
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outb((adapter->mbox_dma >> 16) & 0xFF, |
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adapter->host->io_port + MBOX_PORT2); |
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outb((adapter->mbox_dma >> 24) & 0xFF, |
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adapter->host->io_port + MBOX_PORT3); |
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outb(ENABLE_MBOX_BYTE, |
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adapter->host->io_port + ENABLE_MBOX_REGION); |
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irq_ack(adapter); |
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irq_enable(adapter); |
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} |
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return 0; |
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} |
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/* |
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* mega_query_adapter() |
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* @adapter - pointer to our soft state |
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* |
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* Issue the adapter inquiry commands to the controller and find out |
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* information and parameter about the devices attached |
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*/ |
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static int |
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mega_query_adapter(adapter_t *adapter) |
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{ |
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dma_addr_t prod_info_dma_handle; |
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mega_inquiry3 *inquiry3; |
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u8 raw_mbox[sizeof(struct mbox_out)]; |
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mbox_t *mbox; |
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int retval; |
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|
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/* Initialize adapter inquiry mailbox */ |
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mbox = (mbox_t *)raw_mbox; |
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|
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memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
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memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
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|
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/* |
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* Try to issue Inquiry3 command |
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* if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and |
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* update enquiry3 structure |
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*/ |
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mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; |
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inquiry3 = (mega_inquiry3 *)adapter->mega_buffer; |
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raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ |
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raw_mbox[2] = NC_SUBOP_ENQUIRY3; /* i.e. 0x0F */ |
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raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; /* i.e. 0x02 */ |
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/* Issue a blocking command to the card */ |
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if ((retval = issue_scb_block(adapter, raw_mbox))) { |
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/* the adapter does not support 40ld */ |
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mraid_ext_inquiry *ext_inq; |
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mraid_inquiry *inq; |
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dma_addr_t dma_handle; |
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ext_inq = dma_alloc_coherent(&adapter->dev->dev, |
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sizeof(mraid_ext_inquiry), |
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&dma_handle, GFP_KERNEL); |
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if( ext_inq == NULL ) return -1; |
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inq = &ext_inq->raid_inq; |
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mbox->m_out.xferaddr = (u32)dma_handle; |
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/*issue old 0x04 command to adapter */ |
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mbox->m_out.cmd = MEGA_MBOXCMD_ADPEXTINQ; |
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issue_scb_block(adapter, raw_mbox); |
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/* |
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* update Enquiry3 and ProductInfo structures with |
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* mraid_inquiry structure |
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*/ |
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mega_8_to_40ld(inq, inquiry3, |
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(mega_product_info *)&adapter->product_info); |
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dma_free_coherent(&adapter->dev->dev, |
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sizeof(mraid_ext_inquiry), ext_inq, |
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dma_handle); |
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} else { /*adapter supports 40ld */ |
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adapter->flag |= BOARD_40LD; |
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/* |
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* get product_info, which is static information and will be |
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* unchanged |
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*/ |
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prod_info_dma_handle = dma_map_single(&adapter->dev->dev, |
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(void *)&adapter->product_info, |
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sizeof(mega_product_info), |
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DMA_FROM_DEVICE); |
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mbox->m_out.xferaddr = prod_info_dma_handle; |
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raw_mbox[0] = FC_NEW_CONFIG; /* i.e. mbox->cmd=0xA1 */ |
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raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; /* i.e. 0x0E */ |
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if ((retval = issue_scb_block(adapter, raw_mbox))) |
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dev_warn(&adapter->dev->dev, |
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"Product_info cmd failed with error: %d\n", |
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retval); |
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dma_unmap_single(&adapter->dev->dev, prod_info_dma_handle, |
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sizeof(mega_product_info), DMA_FROM_DEVICE); |
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} |
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/* |
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* kernel scans the channels from 0 to <= max_channel |
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*/ |
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adapter->host->max_channel = |
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adapter->product_info.nchannels + NVIRT_CHAN -1; |
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adapter->host->max_id = 16; /* max targets per channel */ |
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adapter->host->max_lun = 7; /* Up to 7 luns for non disk devices */ |
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adapter->host->cmd_per_lun = max_cmd_per_lun; |
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adapter->numldrv = inquiry3->num_ldrv; |
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adapter->max_cmds = adapter->product_info.max_commands; |
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if(adapter->max_cmds > MAX_COMMANDS) |
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adapter->max_cmds = MAX_COMMANDS; |
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adapter->host->can_queue = adapter->max_cmds - 1; |
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/* |
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* Get the maximum number of scatter-gather elements supported by this |
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* firmware |
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*/ |
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mega_get_max_sgl(adapter); |
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adapter->host->sg_tablesize = adapter->sglen; |
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|
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/* use HP firmware and bios version encoding |
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Note: fw_version[0|1] and bios_version[0|1] were originally shifted |
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right 8 bits making them zero. This 0 value was hardcoded to fix |
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sparse warnings. */ |
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if (adapter->product_info.subsysvid == PCI_VENDOR_ID_HP) { |
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snprintf(adapter->fw_version, sizeof(adapter->fw_version), |
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"%c%d%d.%d%d", |
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adapter->product_info.fw_version[2], |
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0, |
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adapter->product_info.fw_version[1] & 0x0f, |
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0, |
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adapter->product_info.fw_version[0] & 0x0f); |
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snprintf(adapter->bios_version, sizeof(adapter->fw_version), |
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"%c%d%d.%d%d", |
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adapter->product_info.bios_version[2], |
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0, |
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adapter->product_info.bios_version[1] & 0x0f, |
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0, |
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adapter->product_info.bios_version[0] & 0x0f); |
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} else { |
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memcpy(adapter->fw_version, |
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(char *)adapter->product_info.fw_version, 4); |
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adapter->fw_version[4] = 0; |
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memcpy(adapter->bios_version, |
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(char *)adapter->product_info.bios_version, 4); |
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adapter->bios_version[4] = 0; |
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} |
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dev_notice(&adapter->dev->dev, "[%s:%s] detected %d logical drives\n", |
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adapter->fw_version, adapter->bios_version, adapter->numldrv); |
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|
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/* |
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* Do we support extended (>10 bytes) cdbs |
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*/ |
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adapter->support_ext_cdb = mega_support_ext_cdb(adapter); |
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if (adapter->support_ext_cdb) |
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dev_notice(&adapter->dev->dev, "supports extended CDBs\n"); |
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return 0; |
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} |
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/** |
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* mega_runpendq() |
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* @adapter: pointer to our soft state |
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* |
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* Runs through the list of pending requests. |
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*/ |
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static inline void |
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mega_runpendq(adapter_t *adapter) |
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{ |
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if(!list_empty(&adapter->pending_list)) |
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__mega_runpendq(adapter); |
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} |
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|
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/* |
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* megaraid_queue() |
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* @scmd - Issue this scsi command |
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* @done - the callback hook into the scsi mid-layer |
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* |
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* The command queuing entry point for the mid-layer. |
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*/ |
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static int |
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megaraid_queue_lck(struct scsi_cmnd *scmd, void (*done)(struct scsi_cmnd *)) |
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{ |
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adapter_t *adapter; |
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scb_t *scb; |
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int busy=0; |
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unsigned long flags; |
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adapter = (adapter_t *)scmd->device->host->hostdata; |
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|
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scmd->scsi_done = done; |
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/* |
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* Allocate and build a SCB request |
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* busy flag will be set if mega_build_cmd() command could not |
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* allocate scb. We will return non-zero status in that case. |
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* NOTE: scb can be null even though certain commands completed |
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* successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would |
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* return 0 in that case. |
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*/ |
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|
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spin_lock_irqsave(&adapter->lock, flags); |
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scb = mega_build_cmd(adapter, scmd, &busy); |
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if (!scb) |
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goto out; |
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|
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scb->state |= SCB_PENDQ; |
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list_add_tail(&scb->list, &adapter->pending_list); |
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|
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/* |
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* Check if the HBA is in quiescent state, e.g., during a |
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* delete logical drive opertion. If it is, don't run |
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* the pending_list. |
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*/ |
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if (atomic_read(&adapter->quiescent) == 0) |
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mega_runpendq(adapter); |
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|
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busy = 0; |
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out: |
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spin_unlock_irqrestore(&adapter->lock, flags); |
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return busy; |
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} |
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|
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static DEF_SCSI_QCMD(megaraid_queue) |
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|
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/** |
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* mega_allocate_scb() |
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* @adapter: pointer to our soft state |
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* @cmd: scsi command from the mid-layer |
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* |
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* Allocate a SCB structure. This is the central structure for controller |
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* commands. |
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*/ |
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static inline scb_t * |
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mega_allocate_scb(adapter_t *adapter, struct scsi_cmnd *cmd) |
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{ |
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struct list_head *head = &adapter->free_list; |
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scb_t *scb; |
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|
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/* Unlink command from Free List */ |
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if( !list_empty(head) ) { |
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|
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scb = list_entry(head->next, scb_t, list); |
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|
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list_del_init(head->next); |
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|
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scb->state = SCB_ACTIVE; |
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scb->cmd = cmd; |
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scb->dma_type = MEGA_DMA_TYPE_NONE; |
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|
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return scb; |
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} |
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|
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return NULL; |
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} |
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|
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/** |
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* mega_get_ldrv_num() |
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* @adapter: pointer to our soft state |
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* @cmd: scsi mid layer command |
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* @channel: channel on the controller |
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* |
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* Calculate the logical drive number based on the information in scsi command |
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* and the channel number. |
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*/ |
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static inline int |
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mega_get_ldrv_num(adapter_t *adapter, struct scsi_cmnd *cmd, int channel) |
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{ |
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int tgt; |
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int ldrv_num; |
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|
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tgt = cmd->device->id; |
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|
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if ( tgt > adapter->this_id ) |
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tgt--; /* we do not get inquires for initiator id */ |
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|
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ldrv_num = (channel * 15) + tgt; |
|
|
|
|
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/* |
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* If we have a logical drive with boot enabled, project it first |
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*/ |
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if( adapter->boot_ldrv_enabled ) { |
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if( ldrv_num == 0 ) { |
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ldrv_num = adapter->boot_ldrv; |
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} |
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else { |
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if( ldrv_num <= adapter->boot_ldrv ) { |
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ldrv_num--; |
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} |
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} |
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} |
|
|
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/* |
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* If "delete logical drive" feature is enabled on this controller. |
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* Do only if at least one delete logical drive operation was done. |
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* |
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* Also, after logical drive deletion, instead of logical drive number, |
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* the value returned should be 0x80+logical drive id. |
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* |
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* These is valid only for IO commands. |
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*/ |
|
|
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if (adapter->support_random_del && adapter->read_ldidmap ) |
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switch (cmd->cmnd[0]) { |
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case READ_6: |
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case WRITE_6: |
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case READ_10: |
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case WRITE_10: |
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ldrv_num += 0x80; |
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} |
|
|
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return ldrv_num; |
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} |
|
|
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/** |
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* mega_build_cmd() |
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* @adapter: pointer to our soft state |
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* @cmd: Prepare using this scsi command |
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* @busy: busy flag if no resources |
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* |
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* Prepares a command and scatter gather list for the controller. This routine |
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* also finds out if the commands is intended for a logical drive or a |
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* physical device and prepares the controller command accordingly. |
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* |
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* We also re-order the logical drives and physical devices based on their |
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* boot settings. |
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*/ |
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static scb_t * |
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mega_build_cmd(adapter_t *adapter, struct scsi_cmnd *cmd, int *busy) |
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{ |
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mega_passthru *pthru; |
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scb_t *scb; |
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mbox_t *mbox; |
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u32 seg; |
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char islogical; |
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int max_ldrv_num; |
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int channel = 0; |
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int target = 0; |
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int ldrv_num = 0; /* logical drive number */ |
|
|
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/* |
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* We know what channels our logical drives are on - mega_find_card() |
|
*/ |
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islogical = adapter->logdrv_chan[cmd->device->channel]; |
|
|
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/* |
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* The theory: If physical drive is chosen for boot, all the physical |
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* devices are exported before the logical drives, otherwise physical |
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* devices are pushed after logical drives, in which case - Kernel sees |
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* the physical devices on virtual channel which is obviously converted |
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* to actual channel on the HBA. |
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*/ |
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if( adapter->boot_pdrv_enabled ) { |
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if( islogical ) { |
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/* logical channel */ |
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channel = cmd->device->channel - |
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adapter->product_info.nchannels; |
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} |
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else { |
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/* this is physical channel */ |
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channel = cmd->device->channel; |
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target = cmd->device->id; |
|
|
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/* |
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* boot from a physical disk, that disk needs to be |
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* exposed first IF both the channels are SCSI, then |
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* booting from the second channel is not allowed. |
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*/ |
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if( target == 0 ) { |
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target = adapter->boot_pdrv_tgt; |
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} |
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else if( target == adapter->boot_pdrv_tgt ) { |
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target = 0; |
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} |
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} |
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} |
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else { |
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if( islogical ) { |
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/* this is the logical channel */ |
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channel = cmd->device->channel; |
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} |
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else { |
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/* physical channel */ |
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channel = cmd->device->channel - NVIRT_CHAN; |
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target = cmd->device->id; |
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} |
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} |
|
|
|
|
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if(islogical) { |
|
|
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/* have just LUN 0 for each target on virtual channels */ |
|
if (cmd->device->lun) { |
|
cmd->result = (DID_BAD_TARGET << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
} |
|
|
|
ldrv_num = mega_get_ldrv_num(adapter, cmd, channel); |
|
|
|
|
|
max_ldrv_num = (adapter->flag & BOARD_40LD) ? |
|
MAX_LOGICAL_DRIVES_40LD : MAX_LOGICAL_DRIVES_8LD; |
|
|
|
/* |
|
* max_ldrv_num increases by 0x80 if some logical drive was |
|
* deleted. |
|
*/ |
|
if(adapter->read_ldidmap) |
|
max_ldrv_num += 0x80; |
|
|
|
if(ldrv_num > max_ldrv_num ) { |
|
cmd->result = (DID_BAD_TARGET << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
} |
|
|
|
} |
|
else { |
|
if( cmd->device->lun > 7) { |
|
/* |
|
* Do not support lun >7 for physically accessed |
|
* devices |
|
*/ |
|
cmd->result = (DID_BAD_TARGET << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
} |
|
} |
|
|
|
/* |
|
* |
|
* Logical drive commands |
|
* |
|
*/ |
|
if(islogical) { |
|
switch (cmd->cmnd[0]) { |
|
case TEST_UNIT_READY: |
|
#if MEGA_HAVE_CLUSTERING |
|
/* |
|
* Do we support clustering and is the support enabled |
|
* If no, return success always |
|
*/ |
|
if( !adapter->has_cluster ) { |
|
cmd->result = (DID_OK << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
} |
|
|
|
if(!(scb = mega_allocate_scb(adapter, cmd))) { |
|
*busy = 1; |
|
return NULL; |
|
} |
|
|
|
scb->raw_mbox[0] = MEGA_CLUSTER_CMD; |
|
scb->raw_mbox[2] = MEGA_RESERVATION_STATUS; |
|
scb->raw_mbox[3] = ldrv_num; |
|
|
|
scb->dma_direction = DMA_NONE; |
|
|
|
return scb; |
|
#else |
|
cmd->result = (DID_OK << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
#endif |
|
|
|
case MODE_SENSE: { |
|
char *buf; |
|
struct scatterlist *sg; |
|
|
|
sg = scsi_sglist(cmd); |
|
buf = kmap_atomic(sg_page(sg)) + sg->offset; |
|
|
|
memset(buf, 0, cmd->cmnd[4]); |
|
kunmap_atomic(buf - sg->offset); |
|
|
|
cmd->result = (DID_OK << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
} |
|
|
|
case READ_CAPACITY: |
|
case INQUIRY: |
|
|
|
if(!(adapter->flag & (1L << cmd->device->channel))) { |
|
|
|
dev_notice(&adapter->dev->dev, |
|
"scsi%d: scanning scsi channel %d " |
|
"for logical drives\n", |
|
adapter->host->host_no, |
|
cmd->device->channel); |
|
|
|
adapter->flag |= (1L << cmd->device->channel); |
|
} |
|
|
|
/* Allocate a SCB and initialize passthru */ |
|
if(!(scb = mega_allocate_scb(adapter, cmd))) { |
|
*busy = 1; |
|
return NULL; |
|
} |
|
pthru = scb->pthru; |
|
|
|
mbox = (mbox_t *)scb->raw_mbox; |
|
memset(mbox, 0, sizeof(scb->raw_mbox)); |
|
memset(pthru, 0, sizeof(mega_passthru)); |
|
|
|
pthru->timeout = 0; |
|
pthru->ars = 1; |
|
pthru->reqsenselen = 14; |
|
pthru->islogical = 1; |
|
pthru->logdrv = ldrv_num; |
|
pthru->cdblen = cmd->cmd_len; |
|
memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); |
|
|
|
if( adapter->has_64bit_addr ) { |
|
mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; |
|
} |
|
else { |
|
mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; |
|
} |
|
|
|
scb->dma_direction = DMA_FROM_DEVICE; |
|
|
|
pthru->numsgelements = mega_build_sglist(adapter, scb, |
|
&pthru->dataxferaddr, &pthru->dataxferlen); |
|
|
|
mbox->m_out.xferaddr = scb->pthru_dma_addr; |
|
|
|
return scb; |
|
|
|
case READ_6: |
|
case WRITE_6: |
|
case READ_10: |
|
case WRITE_10: |
|
case READ_12: |
|
case WRITE_12: |
|
|
|
/* Allocate a SCB and initialize mailbox */ |
|
if(!(scb = mega_allocate_scb(adapter, cmd))) { |
|
*busy = 1; |
|
return NULL; |
|
} |
|
mbox = (mbox_t *)scb->raw_mbox; |
|
|
|
memset(mbox, 0, sizeof(scb->raw_mbox)); |
|
mbox->m_out.logdrv = ldrv_num; |
|
|
|
/* |
|
* A little hack: 2nd bit is zero for all scsi read |
|
* commands and is set for all scsi write commands |
|
*/ |
|
if( adapter->has_64bit_addr ) { |
|
mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? |
|
MEGA_MBOXCMD_LWRITE64: |
|
MEGA_MBOXCMD_LREAD64 ; |
|
} |
|
else { |
|
mbox->m_out.cmd = (*cmd->cmnd & 0x02) ? |
|
MEGA_MBOXCMD_LWRITE: |
|
MEGA_MBOXCMD_LREAD ; |
|
} |
|
|
|
/* |
|
* 6-byte READ(0x08) or WRITE(0x0A) cdb |
|
*/ |
|
if( cmd->cmd_len == 6 ) { |
|
mbox->m_out.numsectors = (u32) cmd->cmnd[4]; |
|
mbox->m_out.lba = |
|
((u32)cmd->cmnd[1] << 16) | |
|
((u32)cmd->cmnd[2] << 8) | |
|
(u32)cmd->cmnd[3]; |
|
|
|
mbox->m_out.lba &= 0x1FFFFF; |
|
|
|
#if MEGA_HAVE_STATS |
|
/* |
|
* Take modulo 0x80, since the logical drive |
|
* number increases by 0x80 when a logical |
|
* drive was deleted |
|
*/ |
|
if (*cmd->cmnd == READ_6) { |
|
adapter->nreads[ldrv_num%0x80]++; |
|
adapter->nreadblocks[ldrv_num%0x80] += |
|
mbox->m_out.numsectors; |
|
} else { |
|
adapter->nwrites[ldrv_num%0x80]++; |
|
adapter->nwriteblocks[ldrv_num%0x80] += |
|
mbox->m_out.numsectors; |
|
} |
|
#endif |
|
} |
|
|
|
/* |
|
* 10-byte READ(0x28) or WRITE(0x2A) cdb |
|
*/ |
|
if( cmd->cmd_len == 10 ) { |
|
mbox->m_out.numsectors = |
|
(u32)cmd->cmnd[8] | |
|
((u32)cmd->cmnd[7] << 8); |
|
mbox->m_out.lba = |
|
((u32)cmd->cmnd[2] << 24) | |
|
((u32)cmd->cmnd[3] << 16) | |
|
((u32)cmd->cmnd[4] << 8) | |
|
(u32)cmd->cmnd[5]; |
|
|
|
#if MEGA_HAVE_STATS |
|
if (*cmd->cmnd == READ_10) { |
|
adapter->nreads[ldrv_num%0x80]++; |
|
adapter->nreadblocks[ldrv_num%0x80] += |
|
mbox->m_out.numsectors; |
|
} else { |
|
adapter->nwrites[ldrv_num%0x80]++; |
|
adapter->nwriteblocks[ldrv_num%0x80] += |
|
mbox->m_out.numsectors; |
|
} |
|
#endif |
|
} |
|
|
|
/* |
|
* 12-byte READ(0xA8) or WRITE(0xAA) cdb |
|
*/ |
|
if( cmd->cmd_len == 12 ) { |
|
mbox->m_out.lba = |
|
((u32)cmd->cmnd[2] << 24) | |
|
((u32)cmd->cmnd[3] << 16) | |
|
((u32)cmd->cmnd[4] << 8) | |
|
(u32)cmd->cmnd[5]; |
|
|
|
mbox->m_out.numsectors = |
|
((u32)cmd->cmnd[6] << 24) | |
|
((u32)cmd->cmnd[7] << 16) | |
|
((u32)cmd->cmnd[8] << 8) | |
|
(u32)cmd->cmnd[9]; |
|
|
|
#if MEGA_HAVE_STATS |
|
if (*cmd->cmnd == READ_12) { |
|
adapter->nreads[ldrv_num%0x80]++; |
|
adapter->nreadblocks[ldrv_num%0x80] += |
|
mbox->m_out.numsectors; |
|
} else { |
|
adapter->nwrites[ldrv_num%0x80]++; |
|
adapter->nwriteblocks[ldrv_num%0x80] += |
|
mbox->m_out.numsectors; |
|
} |
|
#endif |
|
} |
|
|
|
/* |
|
* If it is a read command |
|
*/ |
|
if( (*cmd->cmnd & 0x0F) == 0x08 ) { |
|
scb->dma_direction = DMA_FROM_DEVICE; |
|
} |
|
else { |
|
scb->dma_direction = DMA_TO_DEVICE; |
|
} |
|
|
|
/* Calculate Scatter-Gather info */ |
|
mbox->m_out.numsgelements = mega_build_sglist(adapter, scb, |
|
(u32 *)&mbox->m_out.xferaddr, &seg); |
|
|
|
return scb; |
|
|
|
#if MEGA_HAVE_CLUSTERING |
|
case RESERVE: |
|
case RELEASE: |
|
|
|
/* |
|
* Do we support clustering and is the support enabled |
|
*/ |
|
if( ! adapter->has_cluster ) { |
|
|
|
cmd->result = (DID_BAD_TARGET << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
} |
|
|
|
/* Allocate a SCB and initialize mailbox */ |
|
if(!(scb = mega_allocate_scb(adapter, cmd))) { |
|
*busy = 1; |
|
return NULL; |
|
} |
|
|
|
scb->raw_mbox[0] = MEGA_CLUSTER_CMD; |
|
scb->raw_mbox[2] = ( *cmd->cmnd == RESERVE ) ? |
|
MEGA_RESERVE_LD : MEGA_RELEASE_LD; |
|
|
|
scb->raw_mbox[3] = ldrv_num; |
|
|
|
scb->dma_direction = DMA_NONE; |
|
|
|
return scb; |
|
#endif |
|
|
|
default: |
|
cmd->result = (DID_BAD_TARGET << 16); |
|
cmd->scsi_done(cmd); |
|
return NULL; |
|
} |
|
} |
|
|
|
/* |
|
* Passthru drive commands |
|
*/ |
|
else { |
|
/* Allocate a SCB and initialize passthru */ |
|
if(!(scb = mega_allocate_scb(adapter, cmd))) { |
|
*busy = 1; |
|
return NULL; |
|
} |
|
|
|
mbox = (mbox_t *)scb->raw_mbox; |
|
memset(mbox, 0, sizeof(scb->raw_mbox)); |
|
|
|
if( adapter->support_ext_cdb ) { |
|
|
|
mega_prepare_extpassthru(adapter, scb, cmd, |
|
channel, target); |
|
|
|
mbox->m_out.cmd = MEGA_MBOXCMD_EXTPTHRU; |
|
|
|
mbox->m_out.xferaddr = scb->epthru_dma_addr; |
|
|
|
} |
|
else { |
|
|
|
pthru = mega_prepare_passthru(adapter, scb, cmd, |
|
channel, target); |
|
|
|
/* Initialize mailbox */ |
|
if( adapter->has_64bit_addr ) { |
|
mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU64; |
|
} |
|
else { |
|
mbox->m_out.cmd = MEGA_MBOXCMD_PASSTHRU; |
|
} |
|
|
|
mbox->m_out.xferaddr = scb->pthru_dma_addr; |
|
|
|
} |
|
return scb; |
|
} |
|
return NULL; |
|
} |
|
|
|
|
|
/** |
|
* mega_prepare_passthru() |
|
* @adapter: pointer to our soft state |
|
* @scb: our scsi control block |
|
* @cmd: scsi command from the mid-layer |
|
* @channel: actual channel on the controller |
|
* @target: actual id on the controller. |
|
* |
|
* prepare a command for the scsi physical devices. |
|
*/ |
|
static mega_passthru * |
|
mega_prepare_passthru(adapter_t *adapter, scb_t *scb, struct scsi_cmnd *cmd, |
|
int channel, int target) |
|
{ |
|
mega_passthru *pthru; |
|
|
|
pthru = scb->pthru; |
|
memset(pthru, 0, sizeof (mega_passthru)); |
|
|
|
/* 0=6sec/1=60sec/2=10min/3=3hrs */ |
|
pthru->timeout = 2; |
|
|
|
pthru->ars = 1; |
|
pthru->reqsenselen = 14; |
|
pthru->islogical = 0; |
|
|
|
pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; |
|
|
|
pthru->target = (adapter->flag & BOARD_40LD) ? |
|
(channel << 4) | target : target; |
|
|
|
pthru->cdblen = cmd->cmd_len; |
|
pthru->logdrv = cmd->device->lun; |
|
|
|
memcpy(pthru->cdb, cmd->cmnd, cmd->cmd_len); |
|
|
|
/* Not sure about the direction */ |
|
scb->dma_direction = DMA_BIDIRECTIONAL; |
|
|
|
/* Special Code for Handling READ_CAPA/ INQ using bounce buffers */ |
|
switch (cmd->cmnd[0]) { |
|
case INQUIRY: |
|
case READ_CAPACITY: |
|
if(!(adapter->flag & (1L << cmd->device->channel))) { |
|
|
|
dev_notice(&adapter->dev->dev, |
|
"scsi%d: scanning scsi channel %d [P%d] " |
|
"for physical devices\n", |
|
adapter->host->host_no, |
|
cmd->device->channel, channel); |
|
|
|
adapter->flag |= (1L << cmd->device->channel); |
|
} |
|
fallthrough; |
|
default: |
|
pthru->numsgelements = mega_build_sglist(adapter, scb, |
|
&pthru->dataxferaddr, &pthru->dataxferlen); |
|
break; |
|
} |
|
return pthru; |
|
} |
|
|
|
|
|
/** |
|
* mega_prepare_extpassthru() |
|
* @adapter: pointer to our soft state |
|
* @scb: our scsi control block |
|
* @cmd: scsi command from the mid-layer |
|
* @channel: actual channel on the controller |
|
* @target: actual id on the controller. |
|
* |
|
* prepare a command for the scsi physical devices. This rountine prepares |
|
* commands for devices which can take extended CDBs (>10 bytes) |
|
*/ |
|
static mega_ext_passthru * |
|
mega_prepare_extpassthru(adapter_t *adapter, scb_t *scb, |
|
struct scsi_cmnd *cmd, |
|
int channel, int target) |
|
{ |
|
mega_ext_passthru *epthru; |
|
|
|
epthru = scb->epthru; |
|
memset(epthru, 0, sizeof(mega_ext_passthru)); |
|
|
|
/* 0=6sec/1=60sec/2=10min/3=3hrs */ |
|
epthru->timeout = 2; |
|
|
|
epthru->ars = 1; |
|
epthru->reqsenselen = 14; |
|
epthru->islogical = 0; |
|
|
|
epthru->channel = (adapter->flag & BOARD_40LD) ? 0 : channel; |
|
epthru->target = (adapter->flag & BOARD_40LD) ? |
|
(channel << 4) | target : target; |
|
|
|
epthru->cdblen = cmd->cmd_len; |
|
epthru->logdrv = cmd->device->lun; |
|
|
|
memcpy(epthru->cdb, cmd->cmnd, cmd->cmd_len); |
|
|
|
/* Not sure about the direction */ |
|
scb->dma_direction = DMA_BIDIRECTIONAL; |
|
|
|
switch(cmd->cmnd[0]) { |
|
case INQUIRY: |
|
case READ_CAPACITY: |
|
if(!(adapter->flag & (1L << cmd->device->channel))) { |
|
|
|
dev_notice(&adapter->dev->dev, |
|
"scsi%d: scanning scsi channel %d [P%d] " |
|
"for physical devices\n", |
|
adapter->host->host_no, |
|
cmd->device->channel, channel); |
|
|
|
adapter->flag |= (1L << cmd->device->channel); |
|
} |
|
fallthrough; |
|
default: |
|
epthru->numsgelements = mega_build_sglist(adapter, scb, |
|
&epthru->dataxferaddr, &epthru->dataxferlen); |
|
break; |
|
} |
|
|
|
return epthru; |
|
} |
|
|
|
static void |
|
__mega_runpendq(adapter_t *adapter) |
|
{ |
|
scb_t *scb; |
|
struct list_head *pos, *next; |
|
|
|
/* Issue any pending commands to the card */ |
|
list_for_each_safe(pos, next, &adapter->pending_list) { |
|
|
|
scb = list_entry(pos, scb_t, list); |
|
|
|
if( !(scb->state & SCB_ISSUED) ) { |
|
|
|
if( issue_scb(adapter, scb) != 0 ) |
|
return; |
|
} |
|
} |
|
|
|
return; |
|
} |
|
|
|
|
|
/** |
|
* issue_scb() |
|
* @adapter: pointer to our soft state |
|
* @scb: scsi control block |
|
* |
|
* Post a command to the card if the mailbox is available, otherwise return |
|
* busy. We also take the scb from the pending list if the mailbox is |
|
* available. |
|
*/ |
|
static int |
|
issue_scb(adapter_t *adapter, scb_t *scb) |
|
{ |
|
volatile mbox64_t *mbox64 = adapter->mbox64; |
|
volatile mbox_t *mbox = adapter->mbox; |
|
unsigned int i = 0; |
|
|
|
if(unlikely(mbox->m_in.busy)) { |
|
do { |
|
udelay(1); |
|
i++; |
|
} while( mbox->m_in.busy && (i < max_mbox_busy_wait) ); |
|
|
|
if(mbox->m_in.busy) return -1; |
|
} |
|
|
|
/* Copy mailbox data into host structure */ |
|
memcpy((char *)&mbox->m_out, (char *)scb->raw_mbox, |
|
sizeof(struct mbox_out)); |
|
|
|
mbox->m_out.cmdid = scb->idx; /* Set cmdid */ |
|
mbox->m_in.busy = 1; /* Set busy */ |
|
|
|
|
|
/* |
|
* Increment the pending queue counter |
|
*/ |
|
atomic_inc(&adapter->pend_cmds); |
|
|
|
switch (mbox->m_out.cmd) { |
|
case MEGA_MBOXCMD_LREAD64: |
|
case MEGA_MBOXCMD_LWRITE64: |
|
case MEGA_MBOXCMD_PASSTHRU64: |
|
case MEGA_MBOXCMD_EXTPTHRU: |
|
mbox64->xfer_segment_lo = mbox->m_out.xferaddr; |
|
mbox64->xfer_segment_hi = 0; |
|
mbox->m_out.xferaddr = 0xFFFFFFFF; |
|
break; |
|
default: |
|
mbox64->xfer_segment_lo = 0; |
|
mbox64->xfer_segment_hi = 0; |
|
} |
|
|
|
/* |
|
* post the command |
|
*/ |
|
scb->state |= SCB_ISSUED; |
|
|
|
if( likely(adapter->flag & BOARD_MEMMAP) ) { |
|
mbox->m_in.poll = 0; |
|
mbox->m_in.ack = 0; |
|
WRINDOOR(adapter, adapter->mbox_dma | 0x1); |
|
} |
|
else { |
|
irq_enable(adapter); |
|
issue_command(adapter); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Wait until the controller's mailbox is available |
|
*/ |
|
static inline int |
|
mega_busywait_mbox (adapter_t *adapter) |
|
{ |
|
if (adapter->mbox->m_in.busy) |
|
return __mega_busywait_mbox(adapter); |
|
return 0; |
|
} |
|
|
|
/** |
|
* issue_scb_block() |
|
* @adapter: pointer to our soft state |
|
* @raw_mbox: the mailbox |
|
* |
|
* Issue a scb in synchronous and non-interrupt mode |
|
*/ |
|
static int |
|
issue_scb_block(adapter_t *adapter, u_char *raw_mbox) |
|
{ |
|
volatile mbox64_t *mbox64 = adapter->mbox64; |
|
volatile mbox_t *mbox = adapter->mbox; |
|
u8 byte; |
|
|
|
/* Wait until mailbox is free */ |
|
if(mega_busywait_mbox (adapter)) |
|
goto bug_blocked_mailbox; |
|
|
|
/* Copy mailbox data into host structure */ |
|
memcpy((char *) mbox, raw_mbox, sizeof(struct mbox_out)); |
|
mbox->m_out.cmdid = 0xFE; |
|
mbox->m_in.busy = 1; |
|
|
|
switch (raw_mbox[0]) { |
|
case MEGA_MBOXCMD_LREAD64: |
|
case MEGA_MBOXCMD_LWRITE64: |
|
case MEGA_MBOXCMD_PASSTHRU64: |
|
case MEGA_MBOXCMD_EXTPTHRU: |
|
mbox64->xfer_segment_lo = mbox->m_out.xferaddr; |
|
mbox64->xfer_segment_hi = 0; |
|
mbox->m_out.xferaddr = 0xFFFFFFFF; |
|
break; |
|
default: |
|
mbox64->xfer_segment_lo = 0; |
|
mbox64->xfer_segment_hi = 0; |
|
} |
|
|
|
if( likely(adapter->flag & BOARD_MEMMAP) ) { |
|
mbox->m_in.poll = 0; |
|
mbox->m_in.ack = 0; |
|
mbox->m_in.numstatus = 0xFF; |
|
mbox->m_in.status = 0xFF; |
|
WRINDOOR(adapter, adapter->mbox_dma | 0x1); |
|
|
|
while((volatile u8)mbox->m_in.numstatus == 0xFF) |
|
cpu_relax(); |
|
|
|
mbox->m_in.numstatus = 0xFF; |
|
|
|
while( (volatile u8)mbox->m_in.poll != 0x77 ) |
|
cpu_relax(); |
|
|
|
mbox->m_in.poll = 0; |
|
mbox->m_in.ack = 0x77; |
|
|
|
WRINDOOR(adapter, adapter->mbox_dma | 0x2); |
|
|
|
while(RDINDOOR(adapter) & 0x2) |
|
cpu_relax(); |
|
} |
|
else { |
|
irq_disable(adapter); |
|
issue_command(adapter); |
|
|
|
while (!((byte = irq_state(adapter)) & INTR_VALID)) |
|
cpu_relax(); |
|
|
|
set_irq_state(adapter, byte); |
|
irq_enable(adapter); |
|
irq_ack(adapter); |
|
} |
|
|
|
return mbox->m_in.status; |
|
|
|
bug_blocked_mailbox: |
|
dev_warn(&adapter->dev->dev, "Blocked mailbox......!!\n"); |
|
udelay (1000); |
|
return -1; |
|
} |
|
|
|
|
|
/** |
|
* megaraid_isr_iomapped() |
|
* @irq: irq |
|
* @devp: pointer to our soft state |
|
* |
|
* Interrupt service routine for io-mapped controllers. |
|
* Find out if our device is interrupting. If yes, acknowledge the interrupt |
|
* and service the completed commands. |
|
*/ |
|
static irqreturn_t |
|
megaraid_isr_iomapped(int irq, void *devp) |
|
{ |
|
adapter_t *adapter = devp; |
|
unsigned long flags; |
|
u8 status; |
|
u8 nstatus; |
|
u8 completed[MAX_FIRMWARE_STATUS]; |
|
u8 byte; |
|
int handled = 0; |
|
|
|
|
|
/* |
|
* loop till F/W has more commands for us to complete. |
|
*/ |
|
spin_lock_irqsave(&adapter->lock, flags); |
|
|
|
do { |
|
/* Check if a valid interrupt is pending */ |
|
byte = irq_state(adapter); |
|
if( (byte & VALID_INTR_BYTE) == 0 ) { |
|
/* |
|
* No more pending commands |
|
*/ |
|
goto out_unlock; |
|
} |
|
set_irq_state(adapter, byte); |
|
|
|
while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) |
|
== 0xFF) |
|
cpu_relax(); |
|
adapter->mbox->m_in.numstatus = 0xFF; |
|
|
|
status = adapter->mbox->m_in.status; |
|
|
|
/* |
|
* decrement the pending queue counter |
|
*/ |
|
atomic_sub(nstatus, &adapter->pend_cmds); |
|
|
|
memcpy(completed, (void *)adapter->mbox->m_in.completed, |
|
nstatus); |
|
|
|
/* Acknowledge interrupt */ |
|
irq_ack(adapter); |
|
|
|
mega_cmd_done(adapter, completed, nstatus, status); |
|
|
|
mega_rundoneq(adapter); |
|
|
|
handled = 1; |
|
|
|
/* Loop through any pending requests */ |
|
if(atomic_read(&adapter->quiescent) == 0) { |
|
mega_runpendq(adapter); |
|
} |
|
|
|
} while(1); |
|
|
|
out_unlock: |
|
|
|
spin_unlock_irqrestore(&adapter->lock, flags); |
|
|
|
return IRQ_RETVAL(handled); |
|
} |
|
|
|
|
|
/** |
|
* megaraid_isr_memmapped() |
|
* @irq: irq |
|
* @devp: pointer to our soft state |
|
* |
|
* Interrupt service routine for memory-mapped controllers. |
|
* Find out if our device is interrupting. If yes, acknowledge the interrupt |
|
* and service the completed commands. |
|
*/ |
|
static irqreturn_t |
|
megaraid_isr_memmapped(int irq, void *devp) |
|
{ |
|
adapter_t *adapter = devp; |
|
unsigned long flags; |
|
u8 status; |
|
u32 dword = 0; |
|
u8 nstatus; |
|
u8 completed[MAX_FIRMWARE_STATUS]; |
|
int handled = 0; |
|
|
|
|
|
/* |
|
* loop till F/W has more commands for us to complete. |
|
*/ |
|
spin_lock_irqsave(&adapter->lock, flags); |
|
|
|
do { |
|
/* Check if a valid interrupt is pending */ |
|
dword = RDOUTDOOR(adapter); |
|
if(dword != 0x10001234) { |
|
/* |
|
* No more pending commands |
|
*/ |
|
goto out_unlock; |
|
} |
|
WROUTDOOR(adapter, 0x10001234); |
|
|
|
while((nstatus = (volatile u8)adapter->mbox->m_in.numstatus) |
|
== 0xFF) { |
|
cpu_relax(); |
|
} |
|
adapter->mbox->m_in.numstatus = 0xFF; |
|
|
|
status = adapter->mbox->m_in.status; |
|
|
|
/* |
|
* decrement the pending queue counter |
|
*/ |
|
atomic_sub(nstatus, &adapter->pend_cmds); |
|
|
|
memcpy(completed, (void *)adapter->mbox->m_in.completed, |
|
nstatus); |
|
|
|
/* Acknowledge interrupt */ |
|
WRINDOOR(adapter, 0x2); |
|
|
|
handled = 1; |
|
|
|
while( RDINDOOR(adapter) & 0x02 ) |
|
cpu_relax(); |
|
|
|
mega_cmd_done(adapter, completed, nstatus, status); |
|
|
|
mega_rundoneq(adapter); |
|
|
|
/* Loop through any pending requests */ |
|
if(atomic_read(&adapter->quiescent) == 0) { |
|
mega_runpendq(adapter); |
|
} |
|
|
|
} while(1); |
|
|
|
out_unlock: |
|
|
|
spin_unlock_irqrestore(&adapter->lock, flags); |
|
|
|
return IRQ_RETVAL(handled); |
|
} |
|
/** |
|
* mega_cmd_done() |
|
* @adapter: pointer to our soft state |
|
* @completed: array of ids of completed commands |
|
* @nstatus: number of completed commands |
|
* @status: status of the last command completed |
|
* |
|
* Complete the commands and call the scsi mid-layer callback hooks. |
|
*/ |
|
static void |
|
mega_cmd_done(adapter_t *adapter, u8 completed[], int nstatus, int status) |
|
{ |
|
mega_ext_passthru *epthru = NULL; |
|
struct scatterlist *sgl; |
|
struct scsi_cmnd *cmd = NULL; |
|
mega_passthru *pthru = NULL; |
|
mbox_t *mbox = NULL; |
|
u8 c; |
|
scb_t *scb; |
|
int islogical; |
|
int cmdid; |
|
int i; |
|
|
|
/* |
|
* for all the commands completed, call the mid-layer callback routine |
|
* and free the scb. |
|
*/ |
|
for( i = 0; i < nstatus; i++ ) { |
|
|
|
cmdid = completed[i]; |
|
|
|
/* |
|
* Only free SCBs for the commands coming down from the |
|
* mid-layer, not for which were issued internally |
|
* |
|
* For internal command, restore the status returned by the |
|
* firmware so that user can interpret it. |
|
*/ |
|
if (cmdid == CMDID_INT_CMDS) { |
|
scb = &adapter->int_scb; |
|
|
|
list_del_init(&scb->list); |
|
scb->state = SCB_FREE; |
|
|
|
adapter->int_status = status; |
|
complete(&adapter->int_waitq); |
|
} else { |
|
scb = &adapter->scb_list[cmdid]; |
|
|
|
/* |
|
* Make sure f/w has completed a valid command |
|
*/ |
|
if( !(scb->state & SCB_ISSUED) || scb->cmd == NULL ) { |
|
dev_crit(&adapter->dev->dev, "invalid command " |
|
"Id %d, scb->state:%x, scsi cmd:%p\n", |
|
cmdid, scb->state, scb->cmd); |
|
|
|
continue; |
|
} |
|
|
|
/* |
|
* Was a abort issued for this command |
|
*/ |
|
if( scb->state & SCB_ABORT ) { |
|
|
|
dev_warn(&adapter->dev->dev, |
|
"aborted cmd [%x] complete\n", |
|
scb->idx); |
|
|
|
scb->cmd->result = (DID_ABORT << 16); |
|
|
|
list_add_tail(SCSI_LIST(scb->cmd), |
|
&adapter->completed_list); |
|
|
|
mega_free_scb(adapter, scb); |
|
|
|
continue; |
|
} |
|
|
|
/* |
|
* Was a reset issued for this command |
|
*/ |
|
if( scb->state & SCB_RESET ) { |
|
|
|
dev_warn(&adapter->dev->dev, |
|
"reset cmd [%x] complete\n", |
|
scb->idx); |
|
|
|
scb->cmd->result = (DID_RESET << 16); |
|
|
|
list_add_tail(SCSI_LIST(scb->cmd), |
|
&adapter->completed_list); |
|
|
|
mega_free_scb (adapter, scb); |
|
|
|
continue; |
|
} |
|
|
|
cmd = scb->cmd; |
|
pthru = scb->pthru; |
|
epthru = scb->epthru; |
|
mbox = (mbox_t *)scb->raw_mbox; |
|
|
|
#if MEGA_HAVE_STATS |
|
{ |
|
|
|
int logdrv = mbox->m_out.logdrv; |
|
|
|
islogical = adapter->logdrv_chan[cmd->channel]; |
|
/* |
|
* Maintain an error counter for the logical drive. |
|
* Some application like SNMP agent need such |
|
* statistics |
|
*/ |
|
if( status && islogical && (cmd->cmnd[0] == READ_6 || |
|
cmd->cmnd[0] == READ_10 || |
|
cmd->cmnd[0] == READ_12)) { |
|
/* |
|
* Logical drive number increases by 0x80 when |
|
* a logical drive is deleted |
|
*/ |
|
adapter->rd_errors[logdrv%0x80]++; |
|
} |
|
|
|
if( status && islogical && (cmd->cmnd[0] == WRITE_6 || |
|
cmd->cmnd[0] == WRITE_10 || |
|
cmd->cmnd[0] == WRITE_12)) { |
|
/* |
|
* Logical drive number increases by 0x80 when |
|
* a logical drive is deleted |
|
*/ |
|
adapter->wr_errors[logdrv%0x80]++; |
|
} |
|
|
|
} |
|
#endif |
|
} |
|
|
|
/* |
|
* 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 |
|
*/ |
|
islogical = adapter->logdrv_chan[cmd->device->channel]; |
|
if( cmd->cmnd[0] == INQUIRY && !islogical ) { |
|
|
|
sgl = scsi_sglist(cmd); |
|
if( sg_page(sgl) ) { |
|
c = *(unsigned char *) sg_virt(&sgl[0]); |
|
} else { |
|
dev_warn(&adapter->dev->dev, "invalid sg\n"); |
|
c = 0; |
|
} |
|
|
|
if(IS_RAID_CH(adapter, cmd->device->channel) && |
|
((c & 0x1F ) == TYPE_DISK)) { |
|
status = 0xF0; |
|
} |
|
} |
|
|
|
/* clear result; otherwise, success returns corrupt value */ |
|
cmd->result = 0; |
|
|
|
/* Convert MegaRAID status to Linux error code */ |
|
switch (status) { |
|
case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */ |
|
cmd->result |= (DID_OK << 16); |
|
break; |
|
|
|
case 0x02: /* ERROR_ABORTED, i.e. |
|
SCSI_STATUS_CHECK_CONDITION */ |
|
|
|
/* set sense_buffer and result fields */ |
|
if( mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU || |
|
mbox->m_out.cmd == MEGA_MBOXCMD_PASSTHRU64 ) { |
|
|
|
memcpy(cmd->sense_buffer, pthru->reqsensearea, |
|
14); |
|
|
|
cmd->result = SAM_STAT_CHECK_CONDITION; |
|
} |
|
else { |
|
if (mbox->m_out.cmd == MEGA_MBOXCMD_EXTPTHRU) { |
|
|
|
memcpy(cmd->sense_buffer, |
|
epthru->reqsensearea, 14); |
|
|
|
cmd->result = SAM_STAT_CHECK_CONDITION; |
|
} else |
|
scsi_build_sense(cmd, 0, |
|
ABORTED_COMMAND, 0, 0); |
|
} |
|
break; |
|
|
|
case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e. |
|
SCSI_STATUS_BUSY */ |
|
cmd->result |= (DID_BUS_BUSY << 16) | status; |
|
break; |
|
|
|
default: |
|
#if MEGA_HAVE_CLUSTERING |
|
/* |
|
* If TEST_UNIT_READY fails, we know |
|
* MEGA_RESERVATION_STATUS failed |
|
*/ |
|
if( cmd->cmnd[0] == TEST_UNIT_READY ) { |
|
cmd->result |= (DID_ERROR << 16) | |
|
SAM_STAT_RESERVATION_CONFLICT; |
|
} |
|
else |
|
/* |
|
* Error code returned is 1 if Reserve or Release |
|
* failed or the input parameter is invalid |
|
*/ |
|
if( status == 1 && |
|
(cmd->cmnd[0] == RESERVE || |
|
cmd->cmnd[0] == RELEASE) ) { |
|
|
|
cmd->result |= (DID_ERROR << 16) | |
|
SAM_STAT_RESERVATION_CONFLICT; |
|
} |
|
else |
|
#endif |
|
cmd->result |= (DID_BAD_TARGET << 16)|status; |
|
} |
|
|
|
mega_free_scb(adapter, scb); |
|
|
|
/* Add Scsi_Command to end of completed queue */ |
|
list_add_tail(SCSI_LIST(cmd), &adapter->completed_list); |
|
} |
|
} |
|
|
|
|
|
/* |
|
* mega_runpendq() |
|
* |
|
* Run through the list of completed requests and finish it |
|
*/ |
|
static void |
|
mega_rundoneq (adapter_t *adapter) |
|
{ |
|
struct scsi_cmnd *cmd; |
|
struct list_head *pos; |
|
|
|
list_for_each(pos, &adapter->completed_list) { |
|
|
|
struct scsi_pointer* spos = (struct scsi_pointer *)pos; |
|
|
|
cmd = list_entry(spos, struct scsi_cmnd, SCp); |
|
cmd->scsi_done(cmd); |
|
} |
|
|
|
INIT_LIST_HEAD(&adapter->completed_list); |
|
} |
|
|
|
|
|
/* |
|
* Free a SCB structure |
|
* Note: We assume the scsi commands associated with this scb is not free yet. |
|
*/ |
|
static void |
|
mega_free_scb(adapter_t *adapter, scb_t *scb) |
|
{ |
|
switch( scb->dma_type ) { |
|
|
|
case MEGA_DMA_TYPE_NONE: |
|
break; |
|
|
|
case MEGA_SGLIST: |
|
scsi_dma_unmap(scb->cmd); |
|
break; |
|
default: |
|
break; |
|
} |
|
|
|
/* |
|
* Remove from the pending list |
|
*/ |
|
list_del_init(&scb->list); |
|
|
|
/* Link the scb back into free list */ |
|
scb->state = SCB_FREE; |
|
scb->cmd = NULL; |
|
|
|
list_add(&scb->list, &adapter->free_list); |
|
} |
|
|
|
|
|
static int |
|
__mega_busywait_mbox (adapter_t *adapter) |
|
{ |
|
volatile mbox_t *mbox = adapter->mbox; |
|
long counter; |
|
|
|
for (counter = 0; counter < 10000; counter++) { |
|
if (!mbox->m_in.busy) |
|
return 0; |
|
udelay(100); |
|
cond_resched(); |
|
} |
|
return -1; /* give up after 1 second */ |
|
} |
|
|
|
/* |
|
* 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(adapter_t *adapter, scb_t *scb, u32 *buf, u32 *len) |
|
{ |
|
struct scatterlist *sg; |
|
struct scsi_cmnd *cmd; |
|
int sgcnt; |
|
int idx; |
|
|
|
cmd = scb->cmd; |
|
|
|
/* |
|
* Copy Scatter-Gather list info into controller structure. |
|
* |
|
* The number of sg elements returned must not exceed our limit |
|
*/ |
|
sgcnt = scsi_dma_map(cmd); |
|
|
|
scb->dma_type = MEGA_SGLIST; |
|
|
|
BUG_ON(sgcnt > adapter->sglen || sgcnt < 0); |
|
|
|
*len = 0; |
|
|
|
if (scsi_sg_count(cmd) == 1 && !adapter->has_64bit_addr) { |
|
sg = scsi_sglist(cmd); |
|
scb->dma_h_bulkdata = sg_dma_address(sg); |
|
*buf = (u32)scb->dma_h_bulkdata; |
|
*len = sg_dma_len(sg); |
|
return 0; |
|
} |
|
|
|
scsi_for_each_sg(cmd, sg, sgcnt, idx) { |
|
if (adapter->has_64bit_addr) { |
|
scb->sgl64[idx].address = sg_dma_address(sg); |
|
*len += scb->sgl64[idx].length = sg_dma_len(sg); |
|
} else { |
|
scb->sgl[idx].address = sg_dma_address(sg); |
|
*len += scb->sgl[idx].length = sg_dma_len(sg); |
|
} |
|
} |
|
|
|
/* Reset pointer and length fields */ |
|
*buf = scb->sgl_dma_addr; |
|
|
|
/* Return count of SG requests */ |
|
return sgcnt; |
|
} |
|
|
|
|
|
/* |
|
* mega_8_to_40ld() |
|
* |
|
* takes all info in AdapterInquiry structure and puts it into ProductInfo and |
|
* Enquiry3 structures for later use |
|
*/ |
|
static void |
|
mega_8_to_40ld(mraid_inquiry *inquiry, mega_inquiry3 *enquiry3, |
|
mega_product_info *product_info) |
|
{ |
|
int i; |
|
|
|
product_info->max_commands = inquiry->adapter_info.max_commands; |
|
enquiry3->rebuild_rate = inquiry->adapter_info.rebuild_rate; |
|
product_info->nchannels = inquiry->adapter_info.nchannels; |
|
|
|
for (i = 0; i < 4; i++) { |
|
product_info->fw_version[i] = |
|
inquiry->adapter_info.fw_version[i]; |
|
|
|
product_info->bios_version[i] = |
|
inquiry->adapter_info.bios_version[i]; |
|
} |
|
enquiry3->cache_flush_interval = |
|
inquiry->adapter_info.cache_flush_interval; |
|
|
|
product_info->dram_size = inquiry->adapter_info.dram_size; |
|
|
|
enquiry3->num_ldrv = inquiry->logdrv_info.num_ldrv; |
|
|
|
for (i = 0; i < MAX_LOGICAL_DRIVES_8LD; i++) { |
|
enquiry3->ldrv_size[i] = inquiry->logdrv_info.ldrv_size[i]; |
|
enquiry3->ldrv_prop[i] = inquiry->logdrv_info.ldrv_prop[i]; |
|
enquiry3->ldrv_state[i] = inquiry->logdrv_info.ldrv_state[i]; |
|
} |
|
|
|
for (i = 0; i < (MAX_PHYSICAL_DRIVES); i++) |
|
enquiry3->pdrv_state[i] = inquiry->pdrv_info.pdrv_state[i]; |
|
} |
|
|
|
static inline void |
|
mega_free_sgl(adapter_t *adapter) |
|
{ |
|
scb_t *scb; |
|
int i; |
|
|
|
for(i = 0; i < adapter->max_cmds; i++) { |
|
|
|
scb = &adapter->scb_list[i]; |
|
|
|
if( scb->sgl64 ) { |
|
dma_free_coherent(&adapter->dev->dev, |
|
sizeof(mega_sgl64) * adapter->sglen, |
|
scb->sgl64, scb->sgl_dma_addr); |
|
|
|
scb->sgl64 = NULL; |
|
} |
|
|
|
if( scb->pthru ) { |
|
dma_free_coherent(&adapter->dev->dev, |
|
sizeof(mega_passthru), scb->pthru, |
|
scb->pthru_dma_addr); |
|
|
|
scb->pthru = NULL; |
|
} |
|
|
|
if( scb->epthru ) { |
|
dma_free_coherent(&adapter->dev->dev, |
|
sizeof(mega_ext_passthru), |
|
scb->epthru, scb->epthru_dma_addr); |
|
|
|
scb->epthru = NULL; |
|
} |
|
|
|
} |
|
} |
|
|
|
|
|
/* |
|
* Get information about the card/driver |
|
*/ |
|
const char * |
|
megaraid_info(struct Scsi_Host *host) |
|
{ |
|
static char buffer[512]; |
|
adapter_t *adapter; |
|
|
|
adapter = (adapter_t *)host->hostdata; |
|
|
|
sprintf (buffer, |
|
"LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns", |
|
adapter->fw_version, adapter->product_info.max_commands, |
|
adapter->host->max_id, adapter->host->max_channel, |
|
(u32)adapter->host->max_lun); |
|
return buffer; |
|
} |
|
|
|
/* |
|
* Abort a previous SCSI request. Only commands on the pending list can be |
|
* aborted. All the commands issued to the F/W must complete. |
|
*/ |
|
static int |
|
megaraid_abort(struct scsi_cmnd *cmd) |
|
{ |
|
adapter_t *adapter; |
|
int rval; |
|
|
|
adapter = (adapter_t *)cmd->device->host->hostdata; |
|
|
|
rval = megaraid_abort_and_reset(adapter, cmd, SCB_ABORT); |
|
|
|
/* |
|
* This is required here to complete any completed requests |
|
* to be communicated over to the mid layer. |
|
*/ |
|
mega_rundoneq(adapter); |
|
|
|
return rval; |
|
} |
|
|
|
|
|
static int |
|
megaraid_reset(struct scsi_cmnd *cmd) |
|
{ |
|
adapter_t *adapter; |
|
megacmd_t mc; |
|
int rval; |
|
|
|
adapter = (adapter_t *)cmd->device->host->hostdata; |
|
|
|
#if MEGA_HAVE_CLUSTERING |
|
mc.cmd = MEGA_CLUSTER_CMD; |
|
mc.opcode = MEGA_RESET_RESERVATIONS; |
|
|
|
if( mega_internal_command(adapter, &mc, NULL) != 0 ) { |
|
dev_warn(&adapter->dev->dev, "reservation reset failed\n"); |
|
} |
|
else { |
|
dev_info(&adapter->dev->dev, "reservation reset\n"); |
|
} |
|
#endif |
|
|
|
spin_lock_irq(&adapter->lock); |
|
|
|
rval = megaraid_abort_and_reset(adapter, cmd, SCB_RESET); |
|
|
|
/* |
|
* This is required here to complete any completed requests |
|
* to be communicated over to the mid layer. |
|
*/ |
|
mega_rundoneq(adapter); |
|
spin_unlock_irq(&adapter->lock); |
|
|
|
return rval; |
|
} |
|
|
|
/** |
|
* megaraid_abort_and_reset() |
|
* @adapter: megaraid soft state |
|
* @cmd: scsi command to be aborted or reset |
|
* @aor: abort or reset flag |
|
* |
|
* Try to locate the scsi command in the pending queue. If found and is not |
|
* issued to the controller, abort/reset it. Otherwise return failure |
|
*/ |
|
static int |
|
megaraid_abort_and_reset(adapter_t *adapter, struct scsi_cmnd *cmd, int aor) |
|
{ |
|
struct list_head *pos, *next; |
|
scb_t *scb; |
|
|
|
dev_warn(&adapter->dev->dev, "%s cmd=%x <c=%d t=%d l=%d>\n", |
|
(aor == SCB_ABORT)? "ABORTING":"RESET", |
|
cmd->cmnd[0], cmd->device->channel, |
|
cmd->device->id, (u32)cmd->device->lun); |
|
|
|
if(list_empty(&adapter->pending_list)) |
|
return FAILED; |
|
|
|
list_for_each_safe(pos, next, &adapter->pending_list) { |
|
|
|
scb = list_entry(pos, scb_t, list); |
|
|
|
if (scb->cmd == cmd) { /* Found command */ |
|
|
|
scb->state |= aor; |
|
|
|
/* |
|
* Check if this command has firmware ownership. If |
|
* yes, we cannot reset this command. Whenever f/w |
|
* completes this command, we will return appropriate |
|
* status from ISR. |
|
*/ |
|
if( scb->state & SCB_ISSUED ) { |
|
|
|
dev_warn(&adapter->dev->dev, |
|
"%s[%x], fw owner\n", |
|
(aor==SCB_ABORT) ? "ABORTING":"RESET", |
|
scb->idx); |
|
|
|
return FAILED; |
|
} |
|
else { |
|
|
|
/* |
|
* Not yet issued! Remove from the pending |
|
* list |
|
*/ |
|
dev_warn(&adapter->dev->dev, |
|
"%s-[%x], driver owner\n", |
|
(aor==SCB_ABORT) ? "ABORTING":"RESET", |
|
scb->idx); |
|
|
|
mega_free_scb(adapter, scb); |
|
|
|
if( aor == SCB_ABORT ) { |
|
cmd->result = (DID_ABORT << 16); |
|
} |
|
else { |
|
cmd->result = (DID_RESET << 16); |
|
} |
|
|
|
list_add_tail(SCSI_LIST(cmd), |
|
&adapter->completed_list); |
|
|
|
return SUCCESS; |
|
} |
|
} |
|
} |
|
|
|
return FAILED; |
|
} |
|
|
|
static inline int |
|
make_local_pdev(adapter_t *adapter, struct pci_dev **pdev) |
|
{ |
|
*pdev = pci_alloc_dev(NULL); |
|
|
|
if( *pdev == NULL ) return -1; |
|
|
|
memcpy(*pdev, adapter->dev, sizeof(struct pci_dev)); |
|
|
|
if (dma_set_mask(&(*pdev)->dev, DMA_BIT_MASK(32)) != 0) { |
|
kfree(*pdev); |
|
return -1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static inline void |
|
free_local_pdev(struct pci_dev *pdev) |
|
{ |
|
kfree(pdev); |
|
} |
|
|
|
/** |
|
* mega_allocate_inquiry() |
|
* @dma_handle: handle returned for dma address |
|
* @pdev: handle to pci device |
|
* |
|
* allocates memory for inquiry structure |
|
*/ |
|
static inline void * |
|
mega_allocate_inquiry(dma_addr_t *dma_handle, struct pci_dev *pdev) |
|
{ |
|
return dma_alloc_coherent(&pdev->dev, sizeof(mega_inquiry3), |
|
dma_handle, GFP_KERNEL); |
|
} |
|
|
|
|
|
static inline void |
|
mega_free_inquiry(void *inquiry, dma_addr_t dma_handle, struct pci_dev *pdev) |
|
{ |
|
dma_free_coherent(&pdev->dev, sizeof(mega_inquiry3), inquiry, |
|
dma_handle); |
|
} |
|
|
|
|
|
#ifdef CONFIG_PROC_FS |
|
/* Following code handles /proc fs */ |
|
|
|
/** |
|
* proc_show_config() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display configuration information about the controller. |
|
*/ |
|
static int |
|
proc_show_config(struct seq_file *m, void *v) |
|
{ |
|
|
|
adapter_t *adapter = m->private; |
|
|
|
seq_puts(m, MEGARAID_VERSION); |
|
if(adapter->product_info.product_name[0]) |
|
seq_printf(m, "%s\n", adapter->product_info.product_name); |
|
|
|
seq_puts(m, "Controller Type: "); |
|
|
|
if( adapter->flag & BOARD_MEMMAP ) |
|
seq_puts(m, "438/466/467/471/493/518/520/531/532\n"); |
|
else |
|
seq_puts(m, "418/428/434\n"); |
|
|
|
if(adapter->flag & BOARD_40LD) |
|
seq_puts(m, "Controller Supports 40 Logical Drives\n"); |
|
|
|
if(adapter->flag & BOARD_64BIT) |
|
seq_puts(m, "Controller capable of 64-bit memory addressing\n"); |
|
if( adapter->has_64bit_addr ) |
|
seq_puts(m, "Controller using 64-bit memory addressing\n"); |
|
else |
|
seq_puts(m, "Controller is not using 64-bit memory addressing\n"); |
|
|
|
seq_printf(m, "Base = %08lx, Irq = %d, ", |
|
adapter->base, adapter->host->irq); |
|
|
|
seq_printf(m, "Logical Drives = %d, Channels = %d\n", |
|
adapter->numldrv, adapter->product_info.nchannels); |
|
|
|
seq_printf(m, "Version =%s:%s, DRAM = %dMb\n", |
|
adapter->fw_version, adapter->bios_version, |
|
adapter->product_info.dram_size); |
|
|
|
seq_printf(m, "Controller Queue Depth = %d, Driver Queue Depth = %d\n", |
|
adapter->product_info.max_commands, adapter->max_cmds); |
|
|
|
seq_printf(m, "support_ext_cdb = %d\n", adapter->support_ext_cdb); |
|
seq_printf(m, "support_random_del = %d\n", adapter->support_random_del); |
|
seq_printf(m, "boot_ldrv_enabled = %d\n", adapter->boot_ldrv_enabled); |
|
seq_printf(m, "boot_ldrv = %d\n", adapter->boot_ldrv); |
|
seq_printf(m, "boot_pdrv_enabled = %d\n", adapter->boot_pdrv_enabled); |
|
seq_printf(m, "boot_pdrv_ch = %d\n", adapter->boot_pdrv_ch); |
|
seq_printf(m, "boot_pdrv_tgt = %d\n", adapter->boot_pdrv_tgt); |
|
seq_printf(m, "quiescent = %d\n", |
|
atomic_read(&adapter->quiescent)); |
|
seq_printf(m, "has_cluster = %d\n", adapter->has_cluster); |
|
|
|
seq_puts(m, "\nModule Parameters:\n"); |
|
seq_printf(m, "max_cmd_per_lun = %d\n", max_cmd_per_lun); |
|
seq_printf(m, "max_sectors_per_io = %d\n", max_sectors_per_io); |
|
return 0; |
|
} |
|
|
|
/** |
|
* proc_show_stat() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display statistical information about the I/O activity. |
|
*/ |
|
static int |
|
proc_show_stat(struct seq_file *m, void *v) |
|
{ |
|
adapter_t *adapter = m->private; |
|
#if MEGA_HAVE_STATS |
|
int i; |
|
#endif |
|
|
|
seq_puts(m, "Statistical Information for this controller\n"); |
|
seq_printf(m, "pend_cmds = %d\n", atomic_read(&adapter->pend_cmds)); |
|
#if MEGA_HAVE_STATS |
|
for(i = 0; i < adapter->numldrv; i++) { |
|
seq_printf(m, "Logical Drive %d:\n", i); |
|
seq_printf(m, "\tReads Issued = %lu, Writes Issued = %lu\n", |
|
adapter->nreads[i], adapter->nwrites[i]); |
|
seq_printf(m, "\tSectors Read = %lu, Sectors Written = %lu\n", |
|
adapter->nreadblocks[i], adapter->nwriteblocks[i]); |
|
seq_printf(m, "\tRead errors = %lu, Write errors = %lu\n\n", |
|
adapter->rd_errors[i], adapter->wr_errors[i]); |
|
} |
|
#else |
|
seq_puts(m, "IO and error counters not compiled in driver.\n"); |
|
#endif |
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* proc_show_mbox() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display mailbox information for the last command issued. This information |
|
* is good for debugging. |
|
*/ |
|
static int |
|
proc_show_mbox(struct seq_file *m, void *v) |
|
{ |
|
adapter_t *adapter = m->private; |
|
volatile mbox_t *mbox = adapter->mbox; |
|
|
|
seq_puts(m, "Contents of Mail Box Structure\n"); |
|
seq_printf(m, " Fw Command = 0x%02x\n", mbox->m_out.cmd); |
|
seq_printf(m, " Cmd Sequence = 0x%02x\n", mbox->m_out.cmdid); |
|
seq_printf(m, " No of Sectors= %04d\n", mbox->m_out.numsectors); |
|
seq_printf(m, " LBA = 0x%02x\n", mbox->m_out.lba); |
|
seq_printf(m, " DTA = 0x%08x\n", mbox->m_out.xferaddr); |
|
seq_printf(m, " Logical Drive= 0x%02x\n", mbox->m_out.logdrv); |
|
seq_printf(m, " No of SG Elmt= 0x%02x\n", mbox->m_out.numsgelements); |
|
seq_printf(m, " Busy = %01x\n", mbox->m_in.busy); |
|
seq_printf(m, " Status = 0x%02x\n", mbox->m_in.status); |
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* proc_show_rebuild_rate() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display current rebuild rate |
|
*/ |
|
static int |
|
proc_show_rebuild_rate(struct seq_file *m, void *v) |
|
{ |
|
adapter_t *adapter = m->private; |
|
dma_addr_t dma_handle; |
|
caddr_t inquiry; |
|
struct pci_dev *pdev; |
|
|
|
if( make_local_pdev(adapter, &pdev) != 0 ) |
|
return 0; |
|
|
|
if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
|
goto free_pdev; |
|
|
|
if( mega_adapinq(adapter, dma_handle) != 0 ) { |
|
seq_puts(m, "Adapter inquiry failed.\n"); |
|
dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
|
goto free_inquiry; |
|
} |
|
|
|
if( adapter->flag & BOARD_40LD ) |
|
seq_printf(m, "Rebuild Rate: [%d%%]\n", |
|
((mega_inquiry3 *)inquiry)->rebuild_rate); |
|
else |
|
seq_printf(m, "Rebuild Rate: [%d%%]\n", |
|
((mraid_ext_inquiry *) |
|
inquiry)->raid_inq.adapter_info.rebuild_rate); |
|
|
|
free_inquiry: |
|
mega_free_inquiry(inquiry, dma_handle, pdev); |
|
free_pdev: |
|
free_local_pdev(pdev); |
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* proc_show_battery() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display information about the battery module on the controller. |
|
*/ |
|
static int |
|
proc_show_battery(struct seq_file *m, void *v) |
|
{ |
|
adapter_t *adapter = m->private; |
|
dma_addr_t dma_handle; |
|
caddr_t inquiry; |
|
struct pci_dev *pdev; |
|
u8 battery_status; |
|
|
|
if( make_local_pdev(adapter, &pdev) != 0 ) |
|
return 0; |
|
|
|
if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
|
goto free_pdev; |
|
|
|
if( mega_adapinq(adapter, dma_handle) != 0 ) { |
|
seq_puts(m, "Adapter inquiry failed.\n"); |
|
dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
|
goto free_inquiry; |
|
} |
|
|
|
if( adapter->flag & BOARD_40LD ) { |
|
battery_status = ((mega_inquiry3 *)inquiry)->battery_status; |
|
} |
|
else { |
|
battery_status = ((mraid_ext_inquiry *)inquiry)-> |
|
raid_inq.adapter_info.battery_status; |
|
} |
|
|
|
/* |
|
* Decode the battery status |
|
*/ |
|
seq_printf(m, "Battery Status:[%d]", battery_status); |
|
|
|
if(battery_status == MEGA_BATT_CHARGE_DONE) |
|
seq_puts(m, " Charge Done"); |
|
|
|
if(battery_status & MEGA_BATT_MODULE_MISSING) |
|
seq_puts(m, " Module Missing"); |
|
|
|
if(battery_status & MEGA_BATT_LOW_VOLTAGE) |
|
seq_puts(m, " Low Voltage"); |
|
|
|
if(battery_status & MEGA_BATT_TEMP_HIGH) |
|
seq_puts(m, " Temperature High"); |
|
|
|
if(battery_status & MEGA_BATT_PACK_MISSING) |
|
seq_puts(m, " Pack Missing"); |
|
|
|
if(battery_status & MEGA_BATT_CHARGE_INPROG) |
|
seq_puts(m, " Charge In-progress"); |
|
|
|
if(battery_status & MEGA_BATT_CHARGE_FAIL) |
|
seq_puts(m, " Charge Fail"); |
|
|
|
if(battery_status & MEGA_BATT_CYCLES_EXCEEDED) |
|
seq_puts(m, " Cycles Exceeded"); |
|
|
|
seq_putc(m, '\n'); |
|
|
|
free_inquiry: |
|
mega_free_inquiry(inquiry, dma_handle, pdev); |
|
free_pdev: |
|
free_local_pdev(pdev); |
|
return 0; |
|
} |
|
|
|
|
|
/* |
|
* Display scsi inquiry |
|
*/ |
|
static void |
|
mega_print_inquiry(struct seq_file *m, char *scsi_inq) |
|
{ |
|
int i; |
|
|
|
seq_puts(m, " Vendor: "); |
|
seq_write(m, scsi_inq + 8, 8); |
|
seq_puts(m, " Model: "); |
|
seq_write(m, scsi_inq + 16, 16); |
|
seq_puts(m, " Rev: "); |
|
seq_write(m, scsi_inq + 32, 4); |
|
seq_putc(m, '\n'); |
|
|
|
i = scsi_inq[0] & 0x1f; |
|
seq_printf(m, " Type: %s ", scsi_device_type(i)); |
|
|
|
seq_printf(m, " ANSI SCSI revision: %02x", |
|
scsi_inq[2] & 0x07); |
|
|
|
if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 ) |
|
seq_puts(m, " CCS\n"); |
|
else |
|
seq_putc(m, '\n'); |
|
} |
|
|
|
/** |
|
* proc_show_pdrv() |
|
* @m: Synthetic file construction data |
|
* @adapter: pointer to our soft state |
|
* @channel: channel |
|
* |
|
* Display information about the physical drives. |
|
*/ |
|
static int |
|
proc_show_pdrv(struct seq_file *m, adapter_t *adapter, int channel) |
|
{ |
|
dma_addr_t dma_handle; |
|
char *scsi_inq; |
|
dma_addr_t scsi_inq_dma_handle; |
|
caddr_t inquiry; |
|
struct pci_dev *pdev; |
|
u8 *pdrv_state; |
|
u8 state; |
|
int tgt; |
|
int max_channels; |
|
int i; |
|
|
|
if( make_local_pdev(adapter, &pdev) != 0 ) |
|
return 0; |
|
|
|
if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
|
goto free_pdev; |
|
|
|
if( mega_adapinq(adapter, dma_handle) != 0 ) { |
|
seq_puts(m, "Adapter inquiry failed.\n"); |
|
dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
|
goto free_inquiry; |
|
} |
|
|
|
|
|
scsi_inq = dma_alloc_coherent(&pdev->dev, 256, &scsi_inq_dma_handle, |
|
GFP_KERNEL); |
|
if( scsi_inq == NULL ) { |
|
seq_puts(m, "memory not available for scsi inq.\n"); |
|
goto free_inquiry; |
|
} |
|
|
|
if( adapter->flag & BOARD_40LD ) { |
|
pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state; |
|
} |
|
else { |
|
pdrv_state = ((mraid_ext_inquiry *)inquiry)-> |
|
raid_inq.pdrv_info.pdrv_state; |
|
} |
|
|
|
max_channels = adapter->product_info.nchannels; |
|
|
|
if( channel >= max_channels ) { |
|
goto free_pci; |
|
} |
|
|
|
for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) { |
|
|
|
i = channel*16 + tgt; |
|
|
|
state = *(pdrv_state + i); |
|
switch( state & 0x0F ) { |
|
case PDRV_ONLINE: |
|
seq_printf(m, "Channel:%2d Id:%2d State: Online", |
|
channel, tgt); |
|
break; |
|
|
|
case PDRV_FAILED: |
|
seq_printf(m, "Channel:%2d Id:%2d State: Failed", |
|
channel, tgt); |
|
break; |
|
|
|
case PDRV_RBLD: |
|
seq_printf(m, "Channel:%2d Id:%2d State: Rebuild", |
|
channel, tgt); |
|
break; |
|
|
|
case PDRV_HOTSPARE: |
|
seq_printf(m, "Channel:%2d Id:%2d State: Hot spare", |
|
channel, tgt); |
|
break; |
|
|
|
default: |
|
seq_printf(m, "Channel:%2d Id:%2d State: Un-configured", |
|
channel, tgt); |
|
break; |
|
} |
|
|
|
/* |
|
* This interface displays inquiries for disk drives |
|
* only. Inquries for logical drives and non-disk |
|
* devices are available through /proc/scsi/scsi |
|
*/ |
|
memset(scsi_inq, 0, 256); |
|
if( mega_internal_dev_inquiry(adapter, channel, tgt, |
|
scsi_inq_dma_handle) || |
|
(scsi_inq[0] & 0x1F) != TYPE_DISK ) { |
|
continue; |
|
} |
|
|
|
/* |
|
* Check for overflow. We print less than 240 |
|
* characters for inquiry |
|
*/ |
|
seq_puts(m, ".\n"); |
|
mega_print_inquiry(m, scsi_inq); |
|
} |
|
|
|
free_pci: |
|
dma_free_coherent(&pdev->dev, 256, scsi_inq, scsi_inq_dma_handle); |
|
free_inquiry: |
|
mega_free_inquiry(inquiry, dma_handle, pdev); |
|
free_pdev: |
|
free_local_pdev(pdev); |
|
return 0; |
|
} |
|
|
|
/** |
|
* proc_show_pdrv_ch0() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display information about the physical drives on physical channel 0. |
|
*/ |
|
static int |
|
proc_show_pdrv_ch0(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_pdrv(m, m->private, 0); |
|
} |
|
|
|
|
|
/** |
|
* proc_show_pdrv_ch1() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display information about the physical drives on physical channel 1. |
|
*/ |
|
static int |
|
proc_show_pdrv_ch1(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_pdrv(m, m->private, 1); |
|
} |
|
|
|
|
|
/** |
|
* proc_show_pdrv_ch2() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display information about the physical drives on physical channel 2. |
|
*/ |
|
static int |
|
proc_show_pdrv_ch2(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_pdrv(m, m->private, 2); |
|
} |
|
|
|
|
|
/** |
|
* proc_show_pdrv_ch3() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display information about the physical drives on physical channel 3. |
|
*/ |
|
static int |
|
proc_show_pdrv_ch3(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_pdrv(m, m->private, 3); |
|
} |
|
|
|
|
|
/** |
|
* proc_show_rdrv() |
|
* @m: Synthetic file construction data |
|
* @adapter: pointer to our soft state |
|
* @start: starting logical drive to display |
|
* @end: ending logical drive to display |
|
* |
|
* We do not print the inquiry information since its already available through |
|
* /proc/scsi/scsi interface |
|
*/ |
|
static int |
|
proc_show_rdrv(struct seq_file *m, adapter_t *adapter, int start, int end ) |
|
{ |
|
dma_addr_t dma_handle; |
|
logdrv_param *lparam; |
|
megacmd_t mc; |
|
char *disk_array; |
|
dma_addr_t disk_array_dma_handle; |
|
caddr_t inquiry; |
|
struct pci_dev *pdev; |
|
u8 *rdrv_state; |
|
int num_ldrv; |
|
u32 array_sz; |
|
int i; |
|
|
|
if( make_local_pdev(adapter, &pdev) != 0 ) |
|
return 0; |
|
|
|
if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) |
|
goto free_pdev; |
|
|
|
if( mega_adapinq(adapter, dma_handle) != 0 ) { |
|
seq_puts(m, "Adapter inquiry failed.\n"); |
|
dev_warn(&adapter->dev->dev, "inquiry failed\n"); |
|
goto free_inquiry; |
|
} |
|
|
|
memset(&mc, 0, sizeof(megacmd_t)); |
|
|
|
if( adapter->flag & BOARD_40LD ) { |
|
array_sz = sizeof(disk_array_40ld); |
|
|
|
rdrv_state = ((mega_inquiry3 *)inquiry)->ldrv_state; |
|
|
|
num_ldrv = ((mega_inquiry3 *)inquiry)->num_ldrv; |
|
} |
|
else { |
|
array_sz = sizeof(disk_array_8ld); |
|
|
|
rdrv_state = ((mraid_ext_inquiry *)inquiry)-> |
|
raid_inq.logdrv_info.ldrv_state; |
|
|
|
num_ldrv = ((mraid_ext_inquiry *)inquiry)-> |
|
raid_inq.logdrv_info.num_ldrv; |
|
} |
|
|
|
disk_array = dma_alloc_coherent(&pdev->dev, array_sz, |
|
&disk_array_dma_handle, GFP_KERNEL); |
|
|
|
if( disk_array == NULL ) { |
|
seq_puts(m, "memory not available.\n"); |
|
goto free_inquiry; |
|
} |
|
|
|
mc.xferaddr = (u32)disk_array_dma_handle; |
|
|
|
if( adapter->flag & BOARD_40LD ) { |
|
mc.cmd = FC_NEW_CONFIG; |
|
mc.opcode = OP_DCMD_READ_CONFIG; |
|
|
|
if( mega_internal_command(adapter, &mc, NULL) ) { |
|
seq_puts(m, "40LD read config failed.\n"); |
|
goto free_pci; |
|
} |
|
|
|
} |
|
else { |
|
mc.cmd = NEW_READ_CONFIG_8LD; |
|
|
|
if( mega_internal_command(adapter, &mc, NULL) ) { |
|
mc.cmd = READ_CONFIG_8LD; |
|
if( mega_internal_command(adapter, &mc, NULL) ) { |
|
seq_puts(m, "8LD read config failed.\n"); |
|
goto free_pci; |
|
} |
|
} |
|
} |
|
|
|
for( i = start; i < ( (end+1 < num_ldrv) ? end+1 : num_ldrv ); i++ ) { |
|
|
|
if( adapter->flag & BOARD_40LD ) { |
|
lparam = |
|
&((disk_array_40ld *)disk_array)->ldrv[i].lparam; |
|
} |
|
else { |
|
lparam = |
|
&((disk_array_8ld *)disk_array)->ldrv[i].lparam; |
|
} |
|
|
|
/* |
|
* Check for overflow. We print less than 240 characters for |
|
* information about each logical drive. |
|
*/ |
|
seq_printf(m, "Logical drive:%2d:, ", i); |
|
|
|
switch( rdrv_state[i] & 0x0F ) { |
|
case RDRV_OFFLINE: |
|
seq_puts(m, "state: offline"); |
|
break; |
|
case RDRV_DEGRADED: |
|
seq_puts(m, "state: degraded"); |
|
break; |
|
case RDRV_OPTIMAL: |
|
seq_puts(m, "state: optimal"); |
|
break; |
|
case RDRV_DELETED: |
|
seq_puts(m, "state: deleted"); |
|
break; |
|
default: |
|
seq_puts(m, "state: unknown"); |
|
break; |
|
} |
|
|
|
/* |
|
* Check if check consistency or initialization is going on |
|
* for this logical drive. |
|
*/ |
|
if( (rdrv_state[i] & 0xF0) == 0x20 ) |
|
seq_puts(m, ", check-consistency in progress"); |
|
else if( (rdrv_state[i] & 0xF0) == 0x10 ) |
|
seq_puts(m, ", initialization in progress"); |
|
|
|
seq_putc(m, '\n'); |
|
|
|
seq_printf(m, "Span depth:%3d, ", lparam->span_depth); |
|
seq_printf(m, "RAID level:%3d, ", lparam->level); |
|
seq_printf(m, "Stripe size:%3d, ", |
|
lparam->stripe_sz ? lparam->stripe_sz/2: 128); |
|
seq_printf(m, "Row size:%3d\n", lparam->row_size); |
|
|
|
seq_puts(m, "Read Policy: "); |
|
switch(lparam->read_ahead) { |
|
case NO_READ_AHEAD: |
|
seq_puts(m, "No read ahead, "); |
|
break; |
|
case READ_AHEAD: |
|
seq_puts(m, "Read ahead, "); |
|
break; |
|
case ADAP_READ_AHEAD: |
|
seq_puts(m, "Adaptive, "); |
|
break; |
|
|
|
} |
|
|
|
seq_puts(m, "Write Policy: "); |
|
switch(lparam->write_mode) { |
|
case WRMODE_WRITE_THRU: |
|
seq_puts(m, "Write thru, "); |
|
break; |
|
case WRMODE_WRITE_BACK: |
|
seq_puts(m, "Write back, "); |
|
break; |
|
} |
|
|
|
seq_puts(m, "Cache Policy: "); |
|
switch(lparam->direct_io) { |
|
case CACHED_IO: |
|
seq_puts(m, "Cached IO\n\n"); |
|
break; |
|
case DIRECT_IO: |
|
seq_puts(m, "Direct IO\n\n"); |
|
break; |
|
} |
|
} |
|
|
|
free_pci: |
|
dma_free_coherent(&pdev->dev, array_sz, disk_array, |
|
disk_array_dma_handle); |
|
free_inquiry: |
|
mega_free_inquiry(inquiry, dma_handle, pdev); |
|
free_pdev: |
|
free_local_pdev(pdev); |
|
return 0; |
|
} |
|
|
|
/** |
|
* proc_show_rdrv_10() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display real time information about the logical drives 0 through 9. |
|
*/ |
|
static int |
|
proc_show_rdrv_10(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_rdrv(m, m->private, 0, 9); |
|
} |
|
|
|
|
|
/** |
|
* proc_show_rdrv_20() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display real time information about the logical drives 0 through 9. |
|
*/ |
|
static int |
|
proc_show_rdrv_20(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_rdrv(m, m->private, 10, 19); |
|
} |
|
|
|
|
|
/** |
|
* proc_show_rdrv_30() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display real time information about the logical drives 0 through 9. |
|
*/ |
|
static int |
|
proc_show_rdrv_30(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_rdrv(m, m->private, 20, 29); |
|
} |
|
|
|
|
|
/** |
|
* proc_show_rdrv_40() |
|
* @m: Synthetic file construction data |
|
* @v: File iterator |
|
* |
|
* Display real time information about the logical drives 0 through 9. |
|
*/ |
|
static int |
|
proc_show_rdrv_40(struct seq_file *m, void *v) |
|
{ |
|
return proc_show_rdrv(m, m->private, 30, 39); |
|
} |
|
|
|
/** |
|
* mega_create_proc_entry() |
|
* @index: index in soft state array |
|
* @parent: parent node for this /proc entry |
|
* |
|
* Creates /proc entries for our controllers. |
|
*/ |
|
static void |
|
mega_create_proc_entry(int index, struct proc_dir_entry *parent) |
|
{ |
|
adapter_t *adapter = hba_soft_state[index]; |
|
struct proc_dir_entry *dir; |
|
u8 string[16]; |
|
|
|
sprintf(string, "hba%d", adapter->host->host_no); |
|
dir = proc_mkdir_data(string, 0, parent, adapter); |
|
if (!dir) { |
|
dev_warn(&adapter->dev->dev, "proc_mkdir failed\n"); |
|
return; |
|
} |
|
|
|
proc_create_single_data("config", S_IRUSR, dir, |
|
proc_show_config, adapter); |
|
proc_create_single_data("stat", S_IRUSR, dir, |
|
proc_show_stat, adapter); |
|
proc_create_single_data("mailbox", S_IRUSR, dir, |
|
proc_show_mbox, adapter); |
|
#if MEGA_HAVE_ENH_PROC |
|
proc_create_single_data("rebuild-rate", S_IRUSR, dir, |
|
proc_show_rebuild_rate, adapter); |
|
proc_create_single_data("battery-status", S_IRUSR, dir, |
|
proc_show_battery, adapter); |
|
proc_create_single_data("diskdrives-ch0", S_IRUSR, dir, |
|
proc_show_pdrv_ch0, adapter); |
|
proc_create_single_data("diskdrives-ch1", S_IRUSR, dir, |
|
proc_show_pdrv_ch1, adapter); |
|
proc_create_single_data("diskdrives-ch2", S_IRUSR, dir, |
|
proc_show_pdrv_ch2, adapter); |
|
proc_create_single_data("diskdrives-ch3", S_IRUSR, dir, |
|
proc_show_pdrv_ch3, adapter); |
|
proc_create_single_data("raiddrives-0-9", S_IRUSR, dir, |
|
proc_show_rdrv_10, adapter); |
|
proc_create_single_data("raiddrives-10-19", S_IRUSR, dir, |
|
proc_show_rdrv_20, adapter); |
|
proc_create_single_data("raiddrives-20-29", S_IRUSR, dir, |
|
proc_show_rdrv_30, adapter); |
|
proc_create_single_data("raiddrives-30-39", S_IRUSR, dir, |
|
proc_show_rdrv_40, adapter); |
|
#endif |
|
} |
|
|
|
#else |
|
static inline void mega_create_proc_entry(int index, struct proc_dir_entry *parent) |
|
{ |
|
} |
|
#endif |
|
|
|
|
|
/* |
|
* megaraid_biosparam() |
|
* |
|
* Return the disk geometry for a particular disk |
|
*/ |
|
static int |
|
megaraid_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
|
sector_t capacity, int geom[]) |
|
{ |
|
adapter_t *adapter; |
|
int heads; |
|
int sectors; |
|
int cylinders; |
|
|
|
/* Get pointer to host config structure */ |
|
adapter = (adapter_t *)sdev->host->hostdata; |
|
|
|
if (IS_RAID_CH(adapter, sdev->channel)) { |
|
/* Default heads (64) & sectors (32) */ |
|
heads = 64; |
|
sectors = 32; |
|
cylinders = (ulong)capacity / (heads * sectors); |
|
|
|
/* |
|
* Handle extended translation size for logical drives |
|
* > 1Gb |
|
*/ |
|
if ((ulong)capacity >= 0x200000) { |
|
heads = 255; |
|
sectors = 63; |
|
cylinders = (ulong)capacity / (heads * sectors); |
|
} |
|
|
|
/* return result */ |
|
geom[0] = heads; |
|
geom[1] = sectors; |
|
geom[2] = cylinders; |
|
} |
|
else { |
|
if (scsi_partsize(bdev, capacity, geom)) |
|
return 0; |
|
|
|
dev_info(&adapter->dev->dev, |
|
"invalid partition on this disk on channel %d\n", |
|
sdev->channel); |
|
|
|
/* Default heads (64) & sectors (32) */ |
|
heads = 64; |
|
sectors = 32; |
|
cylinders = (ulong)capacity / (heads * sectors); |
|
|
|
/* Handle extended translation size for logical drives > 1Gb */ |
|
if ((ulong)capacity >= 0x200000) { |
|
heads = 255; |
|
sectors = 63; |
|
cylinders = (ulong)capacity / (heads * sectors); |
|
} |
|
|
|
/* return result */ |
|
geom[0] = heads; |
|
geom[1] = sectors; |
|
geom[2] = cylinders; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* mega_init_scb() |
|
* @adapter: pointer to our soft state |
|
* |
|
* Allocate memory for the various pointers in the scb structures: |
|
* scatter-gather list pointer, passthru and extended passthru structure |
|
* pointers. |
|
*/ |
|
static int |
|
mega_init_scb(adapter_t *adapter) |
|
{ |
|
scb_t *scb; |
|
int i; |
|
|
|
for( i = 0; i < adapter->max_cmds; i++ ) { |
|
|
|
scb = &adapter->scb_list[i]; |
|
|
|
scb->sgl64 = NULL; |
|
scb->sgl = NULL; |
|
scb->pthru = NULL; |
|
scb->epthru = NULL; |
|
} |
|
|
|
for( i = 0; i < adapter->max_cmds; i++ ) { |
|
|
|
scb = &adapter->scb_list[i]; |
|
|
|
scb->idx = i; |
|
|
|
scb->sgl64 = dma_alloc_coherent(&adapter->dev->dev, |
|
sizeof(mega_sgl64) * adapter->sglen, |
|
&scb->sgl_dma_addr, GFP_KERNEL); |
|
|
|
scb->sgl = (mega_sglist *)scb->sgl64; |
|
|
|
if( !scb->sgl ) { |
|
dev_warn(&adapter->dev->dev, "RAID: Can't allocate sglist\n"); |
|
mega_free_sgl(adapter); |
|
return -1; |
|
} |
|
|
|
scb->pthru = dma_alloc_coherent(&adapter->dev->dev, |
|
sizeof(mega_passthru), |
|
&scb->pthru_dma_addr, GFP_KERNEL); |
|
|
|
if( !scb->pthru ) { |
|
dev_warn(&adapter->dev->dev, "RAID: Can't allocate passthru\n"); |
|
mega_free_sgl(adapter); |
|
return -1; |
|
} |
|
|
|
scb->epthru = dma_alloc_coherent(&adapter->dev->dev, |
|
sizeof(mega_ext_passthru), |
|
&scb->epthru_dma_addr, GFP_KERNEL); |
|
|
|
if( !scb->epthru ) { |
|
dev_warn(&adapter->dev->dev, |
|
"Can't allocate extended passthru\n"); |
|
mega_free_sgl(adapter); |
|
return -1; |
|
} |
|
|
|
|
|
scb->dma_type = MEGA_DMA_TYPE_NONE; |
|
|
|
/* |
|
* Link to free list |
|
* lock not required since we are loading the driver, so no |
|
* commands possible right now. |
|
*/ |
|
scb->state = SCB_FREE; |
|
scb->cmd = NULL; |
|
list_add(&scb->list, &adapter->free_list); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* megadev_open() |
|
* @inode: unused |
|
* @filep: unused |
|
* |
|
* Routines for the character/ioctl interface to the driver. Find out if this |
|
* is a valid open. |
|
*/ |
|
static int |
|
megadev_open (struct inode *inode, struct file *filep) |
|
{ |
|
/* |
|
* Only allow superuser to access private ioctl interface |
|
*/ |
|
if( !capable(CAP_SYS_ADMIN) ) return -EACCES; |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* megadev_ioctl() |
|
* @filep: Our device file |
|
* @cmd: ioctl command |
|
* @arg: user buffer |
|
* |
|
* ioctl entry point for our private ioctl interface. We move the data in from |
|
* the user space, prepare the command (if necessary, convert the old MIMD |
|
* ioctl to new ioctl command), and issue a synchronous command to the |
|
* controller. |
|
*/ |
|
static int |
|
megadev_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) |
|
{ |
|
adapter_t *adapter; |
|
nitioctl_t uioc; |
|
int adapno; |
|
int rval; |
|
mega_passthru __user *upthru; /* user address for passthru */ |
|
mega_passthru *pthru; /* copy user passthru here */ |
|
dma_addr_t pthru_dma_hndl; |
|
void *data = NULL; /* data to be transferred */ |
|
dma_addr_t data_dma_hndl; /* dma handle for data xfer area */ |
|
megacmd_t mc; |
|
#if MEGA_HAVE_STATS |
|
megastat_t __user *ustats = NULL; |
|
int num_ldrv = 0; |
|
#endif |
|
u32 uxferaddr = 0; |
|
struct pci_dev *pdev; |
|
|
|
/* |
|
* Make sure only USCSICMD are issued through this interface. |
|
* MIMD application would still fire different command. |
|
*/ |
|
if( (_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD) ) { |
|
return -EINVAL; |
|
} |
|
|
|
/* |
|
* Check and convert a possible MIMD command to NIT command. |
|
* mega_m_to_n() copies the data from the user space, so we do not |
|
* have to do it here. |
|
* NOTE: We will need some user address to copyout the data, therefore |
|
* the inteface layer will also provide us with the required user |
|
* addresses. |
|
*/ |
|
memset(&uioc, 0, sizeof(nitioctl_t)); |
|
if( (rval = mega_m_to_n( (void __user *)arg, &uioc)) != 0 ) |
|
return rval; |
|
|
|
|
|
switch( uioc.opcode ) { |
|
|
|
case GET_DRIVER_VER: |
|
if( put_user(driver_ver, (u32 __user *)uioc.uioc_uaddr) ) |
|
return (-EFAULT); |
|
|
|
break; |
|
|
|
case GET_N_ADAP: |
|
if( put_user(hba_count, (u32 __user *)uioc.uioc_uaddr) ) |
|
return (-EFAULT); |
|
|
|
/* |
|
* Shucks. MIMD interface returns a positive value for number |
|
* of adapters. TODO: Change it to return 0 when there is no |
|
* applicatio using mimd interface. |
|
*/ |
|
return hba_count; |
|
|
|
case GET_ADAP_INFO: |
|
|
|
/* |
|
* Which adapter |
|
*/ |
|
if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) |
|
return (-ENODEV); |
|
|
|
if( copy_to_user(uioc.uioc_uaddr, mcontroller+adapno, |
|
sizeof(struct mcontroller)) ) |
|
return (-EFAULT); |
|
break; |
|
|
|
#if MEGA_HAVE_STATS |
|
|
|
case GET_STATS: |
|
/* |
|
* Which adapter |
|
*/ |
|
if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) |
|
return (-ENODEV); |
|
|
|
adapter = hba_soft_state[adapno]; |
|
|
|
ustats = uioc.uioc_uaddr; |
|
|
|
if( copy_from_user(&num_ldrv, &ustats->num_ldrv, sizeof(int)) ) |
|
return (-EFAULT); |
|
|
|
/* |
|
* Check for the validity of the logical drive number |
|
*/ |
|
if( num_ldrv >= MAX_LOGICAL_DRIVES_40LD ) return -EINVAL; |
|
|
|
if( copy_to_user(ustats->nreads, adapter->nreads, |
|
num_ldrv*sizeof(u32)) ) |
|
return -EFAULT; |
|
|
|
if( copy_to_user(ustats->nreadblocks, adapter->nreadblocks, |
|
num_ldrv*sizeof(u32)) ) |
|
return -EFAULT; |
|
|
|
if( copy_to_user(ustats->nwrites, adapter->nwrites, |
|
num_ldrv*sizeof(u32)) ) |
|
return -EFAULT; |
|
|
|
if( copy_to_user(ustats->nwriteblocks, adapter->nwriteblocks, |
|
num_ldrv*sizeof(u32)) ) |
|
return -EFAULT; |
|
|
|
if( copy_to_user(ustats->rd_errors, adapter->rd_errors, |
|
num_ldrv*sizeof(u32)) ) |
|
return -EFAULT; |
|
|
|
if( copy_to_user(ustats->wr_errors, adapter->wr_errors, |
|
num_ldrv*sizeof(u32)) ) |
|
return -EFAULT; |
|
|
|
return 0; |
|
|
|
#endif |
|
case MBOX_CMD: |
|
|
|
/* |
|
* Which adapter |
|
*/ |
|
if( (adapno = GETADAP(uioc.adapno)) >= hba_count ) |
|
return (-ENODEV); |
|
|
|
adapter = hba_soft_state[adapno]; |
|
|
|
/* |
|
* Deletion of logical drive is a special case. The adapter |
|
* should be quiescent before this command is issued. |
|
*/ |
|
if( uioc.uioc_rmbox[0] == FC_DEL_LOGDRV && |
|
uioc.uioc_rmbox[2] == OP_DEL_LOGDRV ) { |
|
|
|
/* |
|
* Do we support this feature |
|
*/ |
|
if( !adapter->support_random_del ) { |
|
dev_warn(&adapter->dev->dev, "logdrv " |
|
"delete on non-supporting F/W\n"); |
|
|
|
return (-EINVAL); |
|
} |
|
|
|
rval = mega_del_logdrv( adapter, uioc.uioc_rmbox[3] ); |
|
|
|
if( rval == 0 ) { |
|
memset(&mc, 0, sizeof(megacmd_t)); |
|
|
|
mc.status = rval; |
|
|
|
rval = mega_n_to_m((void __user *)arg, &mc); |
|
} |
|
|
|
return rval; |
|
} |
|
/* |
|
* This interface only support the regular passthru commands. |
|
* Reject extended passthru and 64-bit passthru |
|
*/ |
|
if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU64 || |
|
uioc.uioc_rmbox[0] == MEGA_MBOXCMD_EXTPTHRU ) { |
|
|
|
dev_warn(&adapter->dev->dev, "rejected passthru\n"); |
|
|
|
return (-EINVAL); |
|
} |
|
|
|
/* |
|
* For all internal commands, the buffer must be allocated in |
|
* <4GB address range |
|
*/ |
|
if( make_local_pdev(adapter, &pdev) != 0 ) |
|
return -EIO; |
|
|
|
/* Is it a passthru command or a DCMD */ |
|
if( uioc.uioc_rmbox[0] == MEGA_MBOXCMD_PASSTHRU ) { |
|
/* Passthru commands */ |
|
|
|
pthru = dma_alloc_coherent(&pdev->dev, |
|
sizeof(mega_passthru), |
|
&pthru_dma_hndl, GFP_KERNEL); |
|
|
|
if( pthru == NULL ) { |
|
free_local_pdev(pdev); |
|
return (-ENOMEM); |
|
} |
|
|
|
/* |
|
* The user passthru structure |
|
*/ |
|
upthru = (mega_passthru __user *)(unsigned long)MBOX(uioc)->xferaddr; |
|
|
|
/* |
|
* Copy in the user passthru here. |
|
*/ |
|
if( copy_from_user(pthru, upthru, |
|
sizeof(mega_passthru)) ) { |
|
|
|
dma_free_coherent(&pdev->dev, |
|
sizeof(mega_passthru), |
|
pthru, pthru_dma_hndl); |
|
|
|
free_local_pdev(pdev); |
|
|
|
return (-EFAULT); |
|
} |
|
|
|
/* |
|
* Is there a data transfer |
|
*/ |
|
if( pthru->dataxferlen ) { |
|
data = dma_alloc_coherent(&pdev->dev, |
|
pthru->dataxferlen, |
|
&data_dma_hndl, |
|
GFP_KERNEL); |
|
|
|
if( data == NULL ) { |
|
dma_free_coherent(&pdev->dev, |
|
sizeof(mega_passthru), |
|
pthru, |
|
pthru_dma_hndl); |
|
|
|
free_local_pdev(pdev); |
|
|
|
return (-ENOMEM); |
|
} |
|
|
|
/* |
|
* Save the user address and point the kernel |
|
* address at just allocated memory |
|
*/ |
|
uxferaddr = pthru->dataxferaddr; |
|
pthru->dataxferaddr = data_dma_hndl; |
|
} |
|
|
|
|
|
/* |
|
* Is data coming down-stream |
|
*/ |
|
if( pthru->dataxferlen && (uioc.flags & UIOC_WR) ) { |
|
/* |
|
* Get the user data |
|
*/ |
|
if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, |
|
pthru->dataxferlen) ) { |
|
rval = (-EFAULT); |
|
goto freemem_and_return; |
|
} |
|
} |
|
|
|
memset(&mc, 0, sizeof(megacmd_t)); |
|
|
|
mc.cmd = MEGA_MBOXCMD_PASSTHRU; |
|
mc.xferaddr = (u32)pthru_dma_hndl; |
|
|
|
/* |
|
* Issue the command |
|
*/ |
|
mega_internal_command(adapter, &mc, pthru); |
|
|
|
rval = mega_n_to_m((void __user *)arg, &mc); |
|
|
|
if( rval ) goto freemem_and_return; |
|
|
|
|
|
/* |
|
* Is data going up-stream |
|
*/ |
|
if( pthru->dataxferlen && (uioc.flags & UIOC_RD) ) { |
|
if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, |
|
pthru->dataxferlen) ) { |
|
rval = (-EFAULT); |
|
} |
|
} |
|
|
|
/* |
|
* Send the request sense data also, irrespective of |
|
* whether the user has asked for it or not. |
|
*/ |
|
if (copy_to_user(upthru->reqsensearea, |
|
pthru->reqsensearea, 14)) |
|
rval = -EFAULT; |
|
|
|
freemem_and_return: |
|
if( pthru->dataxferlen ) { |
|
dma_free_coherent(&pdev->dev, |
|
pthru->dataxferlen, data, |
|
data_dma_hndl); |
|
} |
|
|
|
dma_free_coherent(&pdev->dev, sizeof(mega_passthru), |
|
pthru, pthru_dma_hndl); |
|
|
|
free_local_pdev(pdev); |
|
|
|
return rval; |
|
} |
|
else { |
|
/* DCMD commands */ |
|
|
|
/* |
|
* Is there a data transfer |
|
*/ |
|
if( uioc.xferlen ) { |
|
data = dma_alloc_coherent(&pdev->dev, |
|
uioc.xferlen, |
|
&data_dma_hndl, |
|
GFP_KERNEL); |
|
|
|
if( data == NULL ) { |
|
free_local_pdev(pdev); |
|
return (-ENOMEM); |
|
} |
|
|
|
uxferaddr = MBOX(uioc)->xferaddr; |
|
} |
|
|
|
/* |
|
* Is data coming down-stream |
|
*/ |
|
if( uioc.xferlen && (uioc.flags & UIOC_WR) ) { |
|
/* |
|
* Get the user data |
|
*/ |
|
if( copy_from_user(data, (char __user *)(unsigned long) uxferaddr, |
|
uioc.xferlen) ) { |
|
|
|
dma_free_coherent(&pdev->dev, |
|
uioc.xferlen, data, |
|
data_dma_hndl); |
|
|
|
free_local_pdev(pdev); |
|
|
|
return (-EFAULT); |
|
} |
|
} |
|
|
|
memcpy(&mc, MBOX(uioc), sizeof(megacmd_t)); |
|
|
|
mc.xferaddr = (u32)data_dma_hndl; |
|
|
|
/* |
|
* Issue the command |
|
*/ |
|
mega_internal_command(adapter, &mc, NULL); |
|
|
|
rval = mega_n_to_m((void __user *)arg, &mc); |
|
|
|
if( rval ) { |
|
if( uioc.xferlen ) { |
|
dma_free_coherent(&pdev->dev, |
|
uioc.xferlen, data, |
|
data_dma_hndl); |
|
} |
|
|
|
free_local_pdev(pdev); |
|
|
|
return rval; |
|
} |
|
|
|
/* |
|
* Is data going up-stream |
|
*/ |
|
if( uioc.xferlen && (uioc.flags & UIOC_RD) ) { |
|
if( copy_to_user((char __user *)(unsigned long) uxferaddr, data, |
|
uioc.xferlen) ) { |
|
|
|
rval = (-EFAULT); |
|
} |
|
} |
|
|
|
if( uioc.xferlen ) { |
|
dma_free_coherent(&pdev->dev, uioc.xferlen, |
|
data, data_dma_hndl); |
|
} |
|
|
|
free_local_pdev(pdev); |
|
|
|
return rval; |
|
} |
|
|
|
default: |
|
return (-EINVAL); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static long |
|
megadev_unlocked_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) |
|
{ |
|
int ret; |
|
|
|
mutex_lock(&megadev_mutex); |
|
ret = megadev_ioctl(filep, cmd, arg); |
|
mutex_unlock(&megadev_mutex); |
|
|
|
return ret; |
|
} |
|
|
|
/** |
|
* mega_m_to_n() |
|
* @arg: user address |
|
* @uioc: new ioctl structure |
|
* |
|
* A thin layer to convert older mimd interface ioctl structure to NIT ioctl |
|
* structure |
|
* |
|
* Converts the older mimd ioctl structure to newer NIT structure |
|
*/ |
|
static int |
|
mega_m_to_n(void __user *arg, nitioctl_t *uioc) |
|
{ |
|
struct uioctl_t uioc_mimd; |
|
char signature[8] = {0}; |
|
u8 opcode; |
|
u8 subopcode; |
|
|
|
|
|
/* |
|
* check is the application conforms to NIT. We do not have to do much |
|
* in that case. |
|
* We exploit the fact that the signature is stored in the very |
|
* beginning of the structure. |
|
*/ |
|
|
|
if( copy_from_user(signature, arg, 7) ) |
|
return (-EFAULT); |
|
|
|
if( memcmp(signature, "MEGANIT", 7) == 0 ) { |
|
|
|
/* |
|
* NOTE NOTE: The nit ioctl is still under flux because of |
|
* change of mailbox definition, in HPE. No applications yet |
|
* use this interface and let's not have applications use this |
|
* interface till the new specifitions are in place. |
|
*/ |
|
return -EINVAL; |
|
#if 0 |
|
if( copy_from_user(uioc, arg, sizeof(nitioctl_t)) ) |
|
return (-EFAULT); |
|
return 0; |
|
#endif |
|
} |
|
|
|
/* |
|
* Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t |
|
* |
|
* Get the user ioctl structure |
|
*/ |
|
if( copy_from_user(&uioc_mimd, arg, sizeof(struct uioctl_t)) ) |
|
return (-EFAULT); |
|
|
|
|
|
/* |
|
* Get the opcode and subopcode for the commands |
|
*/ |
|
opcode = uioc_mimd.ui.fcs.opcode; |
|
subopcode = uioc_mimd.ui.fcs.subopcode; |
|
|
|
switch (opcode) { |
|
case 0x82: |
|
|
|
switch (subopcode) { |
|
|
|
case MEGAIOC_QDRVRVER: /* Query driver version */ |
|
uioc->opcode = GET_DRIVER_VER; |
|
uioc->uioc_uaddr = uioc_mimd.data; |
|
break; |
|
|
|
case MEGAIOC_QNADAP: /* Get # of adapters */ |
|
uioc->opcode = GET_N_ADAP; |
|
uioc->uioc_uaddr = uioc_mimd.data; |
|
break; |
|
|
|
case MEGAIOC_QADAPINFO: /* Get adapter information */ |
|
uioc->opcode = GET_ADAP_INFO; |
|
uioc->adapno = uioc_mimd.ui.fcs.adapno; |
|
uioc->uioc_uaddr = uioc_mimd.data; |
|
break; |
|
|
|
default: |
|
return(-EINVAL); |
|
} |
|
|
|
break; |
|
|
|
|
|
case 0x81: |
|
|
|
uioc->opcode = MBOX_CMD; |
|
uioc->adapno = uioc_mimd.ui.fcs.adapno; |
|
|
|
memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); |
|
|
|
uioc->xferlen = uioc_mimd.ui.fcs.length; |
|
|
|
if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; |
|
if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; |
|
|
|
break; |
|
|
|
case 0x80: |
|
|
|
uioc->opcode = MBOX_CMD; |
|
uioc->adapno = uioc_mimd.ui.fcs.adapno; |
|
|
|
memcpy(uioc->uioc_rmbox, uioc_mimd.mbox, 18); |
|
|
|
/* |
|
* Choose the xferlen bigger of input and output data |
|
*/ |
|
uioc->xferlen = uioc_mimd.outlen > uioc_mimd.inlen ? |
|
uioc_mimd.outlen : uioc_mimd.inlen; |
|
|
|
if( uioc_mimd.outlen ) uioc->flags = UIOC_RD; |
|
if( uioc_mimd.inlen ) uioc->flags |= UIOC_WR; |
|
|
|
break; |
|
|
|
default: |
|
return (-EINVAL); |
|
|
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* mega_n_to_m() |
|
* @arg: user address |
|
* @mc: mailbox command |
|
* |
|
* Updates the status information to the application, depending on application |
|
* conforms to older mimd ioctl interface or newer NIT ioctl interface |
|
*/ |
|
static int |
|
mega_n_to_m(void __user *arg, megacmd_t *mc) |
|
{ |
|
nitioctl_t __user *uiocp; |
|
megacmd_t __user *umc; |
|
mega_passthru __user *upthru; |
|
struct uioctl_t __user *uioc_mimd; |
|
char signature[8] = {0}; |
|
|
|
/* |
|
* check is the application conforms to NIT. |
|
*/ |
|
if( copy_from_user(signature, arg, 7) ) |
|
return -EFAULT; |
|
|
|
if( memcmp(signature, "MEGANIT", 7) == 0 ) { |
|
|
|
uiocp = arg; |
|
|
|
if( put_user(mc->status, (u8 __user *)&MBOX_P(uiocp)->status) ) |
|
return (-EFAULT); |
|
|
|
if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { |
|
|
|
umc = MBOX_P(uiocp); |
|
|
|
if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) |
|
return -EFAULT; |
|
|
|
if( put_user(mc->status, (u8 __user *)&upthru->scsistatus)) |
|
return (-EFAULT); |
|
} |
|
} |
|
else { |
|
uioc_mimd = arg; |
|
|
|
if( put_user(mc->status, (u8 __user *)&uioc_mimd->mbox[17]) ) |
|
return (-EFAULT); |
|
|
|
if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) { |
|
|
|
umc = (megacmd_t __user *)uioc_mimd->mbox; |
|
|
|
if (get_user(upthru, (mega_passthru __user * __user *)&umc->xferaddr)) |
|
return (-EFAULT); |
|
|
|
if( put_user(mc->status, (u8 __user *)&upthru->scsistatus) ) |
|
return (-EFAULT); |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/* |
|
* MEGARAID 'FW' commands. |
|
*/ |
|
|
|
/** |
|
* mega_is_bios_enabled() |
|
* @adapter: pointer to our soft state |
|
* |
|
* issue command to find out if the BIOS is enabled for this controller |
|
*/ |
|
static int |
|
mega_is_bios_enabled(adapter_t *adapter) |
|
{ |
|
unsigned char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox; |
|
|
|
mbox = (mbox_t *)raw_mbox; |
|
|
|
memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
|
|
|
memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
|
|
|
mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; |
|
|
|
raw_mbox[0] = IS_BIOS_ENABLED; |
|
raw_mbox[2] = GET_BIOS; |
|
|
|
issue_scb_block(adapter, raw_mbox); |
|
|
|
return *(char *)adapter->mega_buffer; |
|
} |
|
|
|
|
|
/** |
|
* mega_enum_raid_scsi() |
|
* @adapter: pointer to our soft state |
|
* |
|
* Find out what channels are RAID/SCSI. This information is used to |
|
* differentiate the virtual channels and physical channels and to support |
|
* ROMB feature and non-disk devices. |
|
*/ |
|
static void |
|
mega_enum_raid_scsi(adapter_t *adapter) |
|
{ |
|
unsigned char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox; |
|
int i; |
|
|
|
mbox = (mbox_t *)raw_mbox; |
|
|
|
memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
|
|
|
/* |
|
* issue command to find out what channels are raid/scsi |
|
*/ |
|
raw_mbox[0] = CHNL_CLASS; |
|
raw_mbox[2] = GET_CHNL_CLASS; |
|
|
|
memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
|
|
|
mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; |
|
|
|
/* |
|
* Non-ROMB firmware fail this command, so all channels |
|
* must be shown RAID |
|
*/ |
|
adapter->mega_ch_class = 0xFF; |
|
|
|
if(!issue_scb_block(adapter, raw_mbox)) { |
|
adapter->mega_ch_class = *((char *)adapter->mega_buffer); |
|
|
|
} |
|
|
|
for( i = 0; i < adapter->product_info.nchannels; i++ ) { |
|
if( (adapter->mega_ch_class >> i) & 0x01 ) { |
|
dev_info(&adapter->dev->dev, "channel[%d] is raid\n", |
|
i); |
|
} |
|
else { |
|
dev_info(&adapter->dev->dev, "channel[%d] is scsi\n", |
|
i); |
|
} |
|
} |
|
|
|
return; |
|
} |
|
|
|
|
|
/** |
|
* mega_get_boot_drv() |
|
* @adapter: pointer to our soft state |
|
* |
|
* Find out which device is the boot device. Note, any logical drive or any |
|
* phyical device (e.g., a CDROM) can be designated as a boot device. |
|
*/ |
|
static void |
|
mega_get_boot_drv(adapter_t *adapter) |
|
{ |
|
struct private_bios_data *prv_bios_data; |
|
unsigned char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox; |
|
u16 cksum = 0; |
|
u8 *cksum_p; |
|
u8 boot_pdrv; |
|
int i; |
|
|
|
mbox = (mbox_t *)raw_mbox; |
|
|
|
memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
|
|
|
raw_mbox[0] = BIOS_PVT_DATA; |
|
raw_mbox[2] = GET_BIOS_PVT_DATA; |
|
|
|
memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
|
|
|
mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; |
|
|
|
adapter->boot_ldrv_enabled = 0; |
|
adapter->boot_ldrv = 0; |
|
|
|
adapter->boot_pdrv_enabled = 0; |
|
adapter->boot_pdrv_ch = 0; |
|
adapter->boot_pdrv_tgt = 0; |
|
|
|
if(issue_scb_block(adapter, raw_mbox) == 0) { |
|
prv_bios_data = |
|
(struct private_bios_data *)adapter->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) ) { |
|
|
|
/* |
|
* If MSB is set, a physical drive is set as boot |
|
* device |
|
*/ |
|
if( prv_bios_data->boot_drv & 0x80 ) { |
|
adapter->boot_pdrv_enabled = 1; |
|
boot_pdrv = prv_bios_data->boot_drv & 0x7F; |
|
adapter->boot_pdrv_ch = boot_pdrv / 16; |
|
adapter->boot_pdrv_tgt = boot_pdrv % 16; |
|
} |
|
else { |
|
adapter->boot_ldrv_enabled = 1; |
|
adapter->boot_ldrv = prv_bios_data->boot_drv; |
|
} |
|
} |
|
} |
|
|
|
} |
|
|
|
/** |
|
* mega_support_random_del() |
|
* @adapter: pointer to our soft state |
|
* |
|
* Find out if this controller supports random deletion and addition of |
|
* logical drives |
|
*/ |
|
static int |
|
mega_support_random_del(adapter_t *adapter) |
|
{ |
|
unsigned char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox; |
|
int rval; |
|
|
|
mbox = (mbox_t *)raw_mbox; |
|
|
|
memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
|
|
|
/* |
|
* issue command |
|
*/ |
|
raw_mbox[0] = FC_DEL_LOGDRV; |
|
raw_mbox[2] = OP_SUP_DEL_LOGDRV; |
|
|
|
rval = issue_scb_block(adapter, raw_mbox); |
|
|
|
return !rval; |
|
} |
|
|
|
|
|
/** |
|
* mega_support_ext_cdb() |
|
* @adapter: pointer to our soft state |
|
* |
|
* Find out if this firmware support cdblen > 10 |
|
*/ |
|
static int |
|
mega_support_ext_cdb(adapter_t *adapter) |
|
{ |
|
unsigned char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox; |
|
int rval; |
|
|
|
mbox = (mbox_t *)raw_mbox; |
|
|
|
memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
|
/* |
|
* issue command to find out if controller supports extended CDBs. |
|
*/ |
|
raw_mbox[0] = 0xA4; |
|
raw_mbox[2] = 0x16; |
|
|
|
rval = issue_scb_block(adapter, raw_mbox); |
|
|
|
return !rval; |
|
} |
|
|
|
|
|
/** |
|
* mega_del_logdrv() |
|
* @adapter: pointer to our soft state |
|
* @logdrv: logical drive to be deleted |
|
* |
|
* Delete the specified logical drive. It is the responsibility of the user |
|
* app to let the OS know about this operation. |
|
*/ |
|
static int |
|
mega_del_logdrv(adapter_t *adapter, int logdrv) |
|
{ |
|
unsigned long flags; |
|
scb_t *scb; |
|
int rval; |
|
|
|
/* |
|
* Stop sending commands to the controller, queue them internally. |
|
* When deletion is complete, ISR will flush the queue. |
|
*/ |
|
atomic_set(&adapter->quiescent, 1); |
|
|
|
/* |
|
* Wait till all the issued commands are complete and there are no |
|
* commands in the pending queue |
|
*/ |
|
while (atomic_read(&adapter->pend_cmds) > 0 || |
|
!list_empty(&adapter->pending_list)) |
|
msleep(1000); /* sleep for 1s */ |
|
|
|
rval = mega_do_del_logdrv(adapter, logdrv); |
|
|
|
spin_lock_irqsave(&adapter->lock, flags); |
|
|
|
/* |
|
* If delete operation was successful, add 0x80 to the logical drive |
|
* ids for commands in the pending queue. |
|
*/ |
|
if (adapter->read_ldidmap) { |
|
struct list_head *pos; |
|
list_for_each(pos, &adapter->pending_list) { |
|
scb = list_entry(pos, scb_t, list); |
|
if (scb->pthru->logdrv < 0x80 ) |
|
scb->pthru->logdrv += 0x80; |
|
} |
|
} |
|
|
|
atomic_set(&adapter->quiescent, 0); |
|
|
|
mega_runpendq(adapter); |
|
|
|
spin_unlock_irqrestore(&adapter->lock, flags); |
|
|
|
return rval; |
|
} |
|
|
|
|
|
static int |
|
mega_do_del_logdrv(adapter_t *adapter, int logdrv) |
|
{ |
|
megacmd_t mc; |
|
int rval; |
|
|
|
memset( &mc, 0, sizeof(megacmd_t)); |
|
|
|
mc.cmd = FC_DEL_LOGDRV; |
|
mc.opcode = OP_DEL_LOGDRV; |
|
mc.subopcode = logdrv; |
|
|
|
rval = mega_internal_command(adapter, &mc, NULL); |
|
|
|
/* log this event */ |
|
if(rval) { |
|
dev_warn(&adapter->dev->dev, "Delete LD-%d failed", logdrv); |
|
return rval; |
|
} |
|
|
|
/* |
|
* After deleting first logical drive, the logical drives must be |
|
* addressed by adding 0x80 to the logical drive id. |
|
*/ |
|
adapter->read_ldidmap = 1; |
|
|
|
return rval; |
|
} |
|
|
|
|
|
/** |
|
* mega_get_max_sgl() |
|
* @adapter: pointer to our soft state |
|
* |
|
* Find out the maximum number of scatter-gather elements supported by this |
|
* version of the firmware |
|
*/ |
|
static void |
|
mega_get_max_sgl(adapter_t *adapter) |
|
{ |
|
unsigned char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox; |
|
|
|
mbox = (mbox_t *)raw_mbox; |
|
|
|
memset(mbox, 0, sizeof(raw_mbox)); |
|
|
|
memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
|
|
|
mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; |
|
|
|
raw_mbox[0] = MAIN_MISC_OPCODE; |
|
raw_mbox[2] = GET_MAX_SG_SUPPORT; |
|
|
|
|
|
if( issue_scb_block(adapter, raw_mbox) ) { |
|
/* |
|
* f/w does not support this command. Choose the default value |
|
*/ |
|
adapter->sglen = MIN_SGLIST; |
|
} |
|
else { |
|
adapter->sglen = *((char *)adapter->mega_buffer); |
|
|
|
/* |
|
* Make sure this is not more than the resources we are |
|
* planning to allocate |
|
*/ |
|
if ( adapter->sglen > MAX_SGLIST ) |
|
adapter->sglen = MAX_SGLIST; |
|
} |
|
|
|
return; |
|
} |
|
|
|
|
|
/** |
|
* mega_support_cluster() |
|
* @adapter: pointer to our soft state |
|
* |
|
* Find out if this firmware support cluster calls. |
|
*/ |
|
static int |
|
mega_support_cluster(adapter_t *adapter) |
|
{ |
|
unsigned char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox; |
|
|
|
mbox = (mbox_t *)raw_mbox; |
|
|
|
memset(mbox, 0, sizeof(raw_mbox)); |
|
|
|
memset((void *)adapter->mega_buffer, 0, MEGA_BUFFER_SIZE); |
|
|
|
mbox->m_out.xferaddr = (u32)adapter->buf_dma_handle; |
|
|
|
/* |
|
* Try to get the initiator id. This command will succeed iff the |
|
* clustering is available on this HBA. |
|
*/ |
|
raw_mbox[0] = MEGA_GET_TARGET_ID; |
|
|
|
if( issue_scb_block(adapter, raw_mbox) == 0 ) { |
|
|
|
/* |
|
* Cluster support available. Get the initiator target id. |
|
* Tell our id to mid-layer too. |
|
*/ |
|
adapter->this_id = *(u32 *)adapter->mega_buffer; |
|
adapter->host->this_id = adapter->this_id; |
|
|
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
#ifdef CONFIG_PROC_FS |
|
/** |
|
* mega_adapinq() |
|
* @adapter: pointer to our soft state |
|
* @dma_handle: DMA address of the buffer |
|
* |
|
* Issue internal commands while interrupts are available. |
|
* We only issue direct mailbox commands from within the driver. ioctl() |
|
* interface using these routines can issue passthru commands. |
|
*/ |
|
static int |
|
mega_adapinq(adapter_t *adapter, dma_addr_t dma_handle) |
|
{ |
|
megacmd_t mc; |
|
|
|
memset(&mc, 0, sizeof(megacmd_t)); |
|
|
|
if( adapter->flag & BOARD_40LD ) { |
|
mc.cmd = FC_NEW_CONFIG; |
|
mc.opcode = NC_SUBOP_ENQUIRY3; |
|
mc.subopcode = ENQ3_GET_SOLICITED_FULL; |
|
} |
|
else { |
|
mc.cmd = MEGA_MBOXCMD_ADPEXTINQ; |
|
} |
|
|
|
mc.xferaddr = (u32)dma_handle; |
|
|
|
if ( mega_internal_command(adapter, &mc, NULL) != 0 ) { |
|
return -1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* mega_internal_dev_inquiry() |
|
* @adapter: pointer to our soft state |
|
* @ch: channel for this device |
|
* @tgt: ID of this device |
|
* @buf_dma_handle: DMA address of the buffer |
|
* |
|
* Issue the scsi inquiry for the specified device. |
|
*/ |
|
static int |
|
mega_internal_dev_inquiry(adapter_t *adapter, u8 ch, u8 tgt, |
|
dma_addr_t buf_dma_handle) |
|
{ |
|
mega_passthru *pthru; |
|
dma_addr_t pthru_dma_handle; |
|
megacmd_t mc; |
|
int rval; |
|
struct pci_dev *pdev; |
|
|
|
|
|
/* |
|
* For all internal commands, the buffer must be allocated in <4GB |
|
* address range |
|
*/ |
|
if( make_local_pdev(adapter, &pdev) != 0 ) return -1; |
|
|
|
pthru = dma_alloc_coherent(&pdev->dev, sizeof(mega_passthru), |
|
&pthru_dma_handle, GFP_KERNEL); |
|
|
|
if( pthru == NULL ) { |
|
free_local_pdev(pdev); |
|
return -1; |
|
} |
|
|
|
pthru->timeout = 2; |
|
pthru->ars = 1; |
|
pthru->reqsenselen = 14; |
|
pthru->islogical = 0; |
|
|
|
pthru->channel = (adapter->flag & BOARD_40LD) ? 0 : ch; |
|
|
|
pthru->target = (adapter->flag & BOARD_40LD) ? (ch << 4)|tgt : tgt; |
|
|
|
pthru->cdblen = 6; |
|
|
|
pthru->cdb[0] = INQUIRY; |
|
pthru->cdb[1] = 0; |
|
pthru->cdb[2] = 0; |
|
pthru->cdb[3] = 0; |
|
pthru->cdb[4] = 255; |
|
pthru->cdb[5] = 0; |
|
|
|
|
|
pthru->dataxferaddr = (u32)buf_dma_handle; |
|
pthru->dataxferlen = 256; |
|
|
|
memset(&mc, 0, sizeof(megacmd_t)); |
|
|
|
mc.cmd = MEGA_MBOXCMD_PASSTHRU; |
|
mc.xferaddr = (u32)pthru_dma_handle; |
|
|
|
rval = mega_internal_command(adapter, &mc, pthru); |
|
|
|
dma_free_coherent(&pdev->dev, sizeof(mega_passthru), pthru, |
|
pthru_dma_handle); |
|
|
|
free_local_pdev(pdev); |
|
|
|
return rval; |
|
} |
|
#endif |
|
|
|
/** |
|
* mega_internal_command() |
|
* @adapter: pointer to our soft state |
|
* @mc: the mailbox command |
|
* @pthru: Passthru structure for DCDB commands |
|
* |
|
* Issue the internal commands in interrupt mode. |
|
* The last argument is the address of the passthru structure if the command |
|
* to be fired is a passthru command |
|
* |
|
* Note: parameter 'pthru' is null for non-passthru commands. |
|
*/ |
|
static int |
|
mega_internal_command(adapter_t *adapter, megacmd_t *mc, mega_passthru *pthru) |
|
{ |
|
unsigned long flags; |
|
scb_t *scb; |
|
int rval; |
|
|
|
/* |
|
* The internal commands share one command id and hence are |
|
* serialized. This is so because we want to reserve maximum number of |
|
* available command ids for the I/O commands. |
|
*/ |
|
mutex_lock(&adapter->int_mtx); |
|
|
|
scb = &adapter->int_scb; |
|
memset(scb, 0, sizeof(scb_t)); |
|
|
|
scb->idx = CMDID_INT_CMDS; |
|
scb->state |= SCB_ACTIVE | SCB_PENDQ; |
|
|
|
memcpy(scb->raw_mbox, mc, sizeof(megacmd_t)); |
|
|
|
/* |
|
* Is it a passthru command |
|
*/ |
|
if (mc->cmd == MEGA_MBOXCMD_PASSTHRU) |
|
scb->pthru = pthru; |
|
|
|
spin_lock_irqsave(&adapter->lock, flags); |
|
list_add_tail(&scb->list, &adapter->pending_list); |
|
/* |
|
* Check if the HBA is in quiescent state, e.g., during a |
|
* delete logical drive opertion. If it is, don't run |
|
* the pending_list. |
|
*/ |
|
if (atomic_read(&adapter->quiescent) == 0) |
|
mega_runpendq(adapter); |
|
spin_unlock_irqrestore(&adapter->lock, flags); |
|
|
|
wait_for_completion(&adapter->int_waitq); |
|
|
|
mc->status = rval = adapter->int_status; |
|
|
|
/* |
|
* Print a debug message for all failed commands. Applications can use |
|
* this information. |
|
*/ |
|
if (rval && trace_level) { |
|
dev_info(&adapter->dev->dev, "cmd [%x, %x, %x] status:[%x]\n", |
|
mc->cmd, mc->opcode, mc->subopcode, rval); |
|
} |
|
|
|
mutex_unlock(&adapter->int_mtx); |
|
return rval; |
|
} |
|
|
|
static struct scsi_host_template megaraid_template = { |
|
.module = THIS_MODULE, |
|
.name = "MegaRAID", |
|
.proc_name = "megaraid_legacy", |
|
.info = megaraid_info, |
|
.queuecommand = megaraid_queue, |
|
.bios_param = megaraid_biosparam, |
|
.max_sectors = MAX_SECTORS_PER_IO, |
|
.can_queue = MAX_COMMANDS, |
|
.this_id = DEFAULT_INITIATOR_ID, |
|
.sg_tablesize = MAX_SGLIST, |
|
.cmd_per_lun = DEF_CMD_PER_LUN, |
|
.eh_abort_handler = megaraid_abort, |
|
.eh_device_reset_handler = megaraid_reset, |
|
.eh_bus_reset_handler = megaraid_reset, |
|
.eh_host_reset_handler = megaraid_reset, |
|
.no_write_same = 1, |
|
}; |
|
|
|
static int |
|
megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
|
{ |
|
struct Scsi_Host *host; |
|
adapter_t *adapter; |
|
unsigned long mega_baseport, tbase, flag = 0; |
|
u16 subsysid, subsysvid; |
|
u8 pci_bus, pci_dev_func; |
|
int irq, i, j; |
|
int error = -ENODEV; |
|
|
|
if (hba_count >= MAX_CONTROLLERS) |
|
goto out; |
|
|
|
if (pci_enable_device(pdev)) |
|
goto out; |
|
pci_set_master(pdev); |
|
|
|
pci_bus = pdev->bus->number; |
|
pci_dev_func = pdev->devfn; |
|
|
|
/* |
|
* The megaraid3 stuff reports the ID of the Intel part which is not |
|
* remotely specific to the megaraid |
|
*/ |
|
if (pdev->vendor == PCI_VENDOR_ID_INTEL) { |
|
u16 magic; |
|
/* |
|
* Don't fall over the Compaq management cards using the same |
|
* PCI identifier |
|
*/ |
|
if (pdev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ && |
|
pdev->subsystem_device == 0xC000) |
|
goto out_disable_device; |
|
/* Now check the magic signature byte */ |
|
pci_read_config_word(pdev, PCI_CONF_AMISIG, &magic); |
|
if (magic != HBA_SIGNATURE_471 && magic != HBA_SIGNATURE) |
|
goto out_disable_device; |
|
/* Ok it is probably a megaraid */ |
|
} |
|
|
|
/* |
|
* For these vendor and device ids, signature offsets are not |
|
* valid and 64 bit is implicit |
|
*/ |
|
if (id->driver_data & BOARD_64BIT) |
|
flag |= BOARD_64BIT; |
|
else { |
|
u32 magic64; |
|
|
|
pci_read_config_dword(pdev, PCI_CONF_AMISIG64, &magic64); |
|
if (magic64 == HBA_SIGNATURE_64BIT) |
|
flag |= BOARD_64BIT; |
|
} |
|
|
|
subsysvid = pdev->subsystem_vendor; |
|
subsysid = pdev->subsystem_device; |
|
|
|
dev_notice(&pdev->dev, "found 0x%4.04x:0x%4.04x\n", |
|
id->vendor, id->device); |
|
|
|
/* Read the base port and IRQ from PCI */ |
|
mega_baseport = pci_resource_start(pdev, 0); |
|
irq = pdev->irq; |
|
|
|
tbase = mega_baseport; |
|
if (pci_resource_flags(pdev, 0) & IORESOURCE_MEM) { |
|
flag |= BOARD_MEMMAP; |
|
|
|
if (!request_mem_region(mega_baseport, 128, "megaraid")) { |
|
dev_warn(&pdev->dev, "mem region busy!\n"); |
|
goto out_disable_device; |
|
} |
|
|
|
mega_baseport = (unsigned long)ioremap(mega_baseport, 128); |
|
if (!mega_baseport) { |
|
dev_warn(&pdev->dev, "could not map hba memory\n"); |
|
goto out_release_region; |
|
} |
|
} else { |
|
flag |= BOARD_IOMAP; |
|
mega_baseport += 0x10; |
|
|
|
if (!request_region(mega_baseport, 16, "megaraid")) |
|
goto out_disable_device; |
|
} |
|
|
|
/* Initialize SCSI Host structure */ |
|
host = scsi_host_alloc(&megaraid_template, sizeof(adapter_t)); |
|
if (!host) |
|
goto out_iounmap; |
|
|
|
adapter = (adapter_t *)host->hostdata; |
|
memset(adapter, 0, sizeof(adapter_t)); |
|
|
|
dev_notice(&pdev->dev, |
|
"scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n", |
|
host->host_no, mega_baseport, irq); |
|
|
|
adapter->base = mega_baseport; |
|
if (flag & BOARD_MEMMAP) |
|
adapter->mmio_base = (void __iomem *) mega_baseport; |
|
|
|
INIT_LIST_HEAD(&adapter->free_list); |
|
INIT_LIST_HEAD(&adapter->pending_list); |
|
INIT_LIST_HEAD(&adapter->completed_list); |
|
|
|
adapter->flag = flag; |
|
spin_lock_init(&adapter->lock); |
|
|
|
host->cmd_per_lun = max_cmd_per_lun; |
|
host->max_sectors = max_sectors_per_io; |
|
|
|
adapter->dev = pdev; |
|
adapter->host = host; |
|
|
|
adapter->host->irq = irq; |
|
|
|
if (flag & BOARD_MEMMAP) |
|
adapter->host->base = tbase; |
|
else { |
|
adapter->host->io_port = tbase; |
|
adapter->host->n_io_port = 16; |
|
} |
|
|
|
adapter->host->unique_id = (pci_bus << 8) | pci_dev_func; |
|
|
|
/* |
|
* Allocate buffer to issue internal commands. |
|
*/ |
|
adapter->mega_buffer = dma_alloc_coherent(&adapter->dev->dev, |
|
MEGA_BUFFER_SIZE, |
|
&adapter->buf_dma_handle, |
|
GFP_KERNEL); |
|
if (!adapter->mega_buffer) { |
|
dev_warn(&pdev->dev, "out of RAM\n"); |
|
goto out_host_put; |
|
} |
|
|
|
adapter->scb_list = kmalloc_array(MAX_COMMANDS, sizeof(scb_t), |
|
GFP_KERNEL); |
|
if (!adapter->scb_list) { |
|
dev_warn(&pdev->dev, "out of RAM\n"); |
|
goto out_free_cmd_buffer; |
|
} |
|
|
|
if (request_irq(irq, (adapter->flag & BOARD_MEMMAP) ? |
|
megaraid_isr_memmapped : megaraid_isr_iomapped, |
|
IRQF_SHARED, "megaraid", adapter)) { |
|
dev_warn(&pdev->dev, "Couldn't register IRQ %d!\n", irq); |
|
goto out_free_scb_list; |
|
} |
|
|
|
if (mega_setup_mailbox(adapter)) |
|
goto out_free_irq; |
|
|
|
if (mega_query_adapter(adapter)) |
|
goto out_free_mbox; |
|
|
|
/* |
|
* Have checks for some buggy f/w |
|
*/ |
|
if ((subsysid == 0x1111) && (subsysvid == 0x1111)) { |
|
/* |
|
* Which firmware |
|
*/ |
|
if (!strcmp(adapter->fw_version, "3.00") || |
|
!strcmp(adapter->fw_version, "3.01")) { |
|
|
|
dev_warn(&pdev->dev, |
|
"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\nmegaraid: " |
|
"to protect your data, please upgrade " |
|
"your firmware to version\nmegaraid: " |
|
"3.10 or later, available from the " |
|
"Dell Technical Support web\n" |
|
"megaraid: site at\nhttp://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, H.01.08, and H.01.09 disable 64 bit |
|
* support, since this firmware cannot handle 64 bit |
|
* addressing |
|
*/ |
|
if ((subsysvid == PCI_VENDOR_ID_HP) && |
|
((subsysid == 0x60E7) || (subsysid == 0x60E8))) { |
|
/* |
|
* which firmware |
|
*/ |
|
if (!strcmp(adapter->fw_version, "H01.07") || |
|
!strcmp(adapter->fw_version, "H01.08") || |
|
!strcmp(adapter->fw_version, "H01.09") ) { |
|
dev_warn(&pdev->dev, |
|
"Firmware H.01.07, " |
|
"H.01.08, and H.01.09 on 1M/2M " |
|
"controllers\n" |
|
"do not support 64 bit " |
|
"addressing.\nDISABLING " |
|
"64 bit support.\n"); |
|
adapter->flag &= ~BOARD_64BIT; |
|
} |
|
} |
|
|
|
if (mega_is_bios_enabled(adapter)) |
|
mega_hbas[hba_count].is_bios_enabled = 1; |
|
mega_hbas[hba_count].hostdata_addr = adapter; |
|
|
|
/* |
|
* Find out which channel is raid and which is scsi. This is |
|
* for ROMB support. |
|
*/ |
|
mega_enum_raid_scsi(adapter); |
|
|
|
/* |
|
* Find out if a logical drive is set as the boot drive. If |
|
* there is one, will make that as the first logical drive. |
|
* ROMB: Do we have to boot from a physical drive. Then all |
|
* the physical drives would appear before the logical disks. |
|
* Else, all the physical drives would be exported to the mid |
|
* layer after logical drives. |
|
*/ |
|
mega_get_boot_drv(adapter); |
|
|
|
if (adapter->boot_pdrv_enabled) { |
|
j = adapter->product_info.nchannels; |
|
for( i = 0; i < j; i++ ) |
|
adapter->logdrv_chan[i] = 0; |
|
for( i = j; i < NVIRT_CHAN + j; i++ ) |
|
adapter->logdrv_chan[i] = 1; |
|
} else { |
|
for (i = 0; i < NVIRT_CHAN; i++) |
|
adapter->logdrv_chan[i] = 1; |
|
for (i = NVIRT_CHAN; i < MAX_CHANNELS+NVIRT_CHAN; i++) |
|
adapter->logdrv_chan[i] = 0; |
|
adapter->mega_ch_class <<= NVIRT_CHAN; |
|
} |
|
|
|
/* |
|
* Do we support random deletion and addition of logical |
|
* drives |
|
*/ |
|
adapter->read_ldidmap = 0; /* set it after first logdrv |
|
delete cmd */ |
|
adapter->support_random_del = mega_support_random_del(adapter); |
|
|
|
/* Initialize SCBs */ |
|
if (mega_init_scb(adapter)) |
|
goto out_free_mbox; |
|
|
|
/* |
|
* Reset the pending commands counter |
|
*/ |
|
atomic_set(&adapter->pend_cmds, 0); |
|
|
|
/* |
|
* Reset the adapter quiescent flag |
|
*/ |
|
atomic_set(&adapter->quiescent, 0); |
|
|
|
hba_soft_state[hba_count] = adapter; |
|
|
|
/* |
|
* Fill in the structure which needs to be passed back to the |
|
* application when it does an ioctl() for controller related |
|
* information. |
|
*/ |
|
i = hba_count; |
|
|
|
mcontroller[i].base = mega_baseport; |
|
mcontroller[i].irq = irq; |
|
mcontroller[i].numldrv = adapter->numldrv; |
|
mcontroller[i].pcibus = pci_bus; |
|
mcontroller[i].pcidev = id->device; |
|
mcontroller[i].pcifun = PCI_FUNC (pci_dev_func); |
|
mcontroller[i].pciid = -1; |
|
mcontroller[i].pcivendor = id->vendor; |
|
mcontroller[i].pcislot = PCI_SLOT(pci_dev_func); |
|
mcontroller[i].uid = (pci_bus << 8) | pci_dev_func; |
|
|
|
|
|
/* Set the Mode of addressing to 64 bit if we can */ |
|
if ((adapter->flag & BOARD_64BIT) && (sizeof(dma_addr_t) == 8)) { |
|
dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
|
adapter->has_64bit_addr = 1; |
|
} else { |
|
dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
|
adapter->has_64bit_addr = 0; |
|
} |
|
|
|
mutex_init(&adapter->int_mtx); |
|
init_completion(&adapter->int_waitq); |
|
|
|
adapter->this_id = DEFAULT_INITIATOR_ID; |
|
adapter->host->this_id = DEFAULT_INITIATOR_ID; |
|
|
|
#if MEGA_HAVE_CLUSTERING |
|
/* |
|
* Is cluster support enabled on this controller |
|
* Note: In a cluster the HBAs ( the initiators ) will have |
|
* different target IDs and we cannot assume it to be 7. Call |
|
* to mega_support_cluster() will get the target ids also if |
|
* the cluster support is available |
|
*/ |
|
adapter->has_cluster = mega_support_cluster(adapter); |
|
if (adapter->has_cluster) { |
|
dev_notice(&pdev->dev, |
|
"Cluster driver, initiator id:%d\n", |
|
adapter->this_id); |
|
} |
|
#endif |
|
|
|
pci_set_drvdata(pdev, host); |
|
|
|
mega_create_proc_entry(hba_count, mega_proc_dir_entry); |
|
|
|
error = scsi_add_host(host, &pdev->dev); |
|
if (error) |
|
goto out_free_mbox; |
|
|
|
scsi_scan_host(host); |
|
hba_count++; |
|
return 0; |
|
|
|
out_free_mbox: |
|
dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), |
|
adapter->una_mbox64, adapter->una_mbox64_dma); |
|
out_free_irq: |
|
free_irq(adapter->host->irq, adapter); |
|
out_free_scb_list: |
|
kfree(adapter->scb_list); |
|
out_free_cmd_buffer: |
|
dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, |
|
adapter->mega_buffer, adapter->buf_dma_handle); |
|
out_host_put: |
|
scsi_host_put(host); |
|
out_iounmap: |
|
if (flag & BOARD_MEMMAP) |
|
iounmap((void *)mega_baseport); |
|
out_release_region: |
|
if (flag & BOARD_MEMMAP) |
|
release_mem_region(tbase, 128); |
|
else |
|
release_region(mega_baseport, 16); |
|
out_disable_device: |
|
pci_disable_device(pdev); |
|
out: |
|
return error; |
|
} |
|
|
|
static void |
|
__megaraid_shutdown(adapter_t *adapter) |
|
{ |
|
u_char raw_mbox[sizeof(struct mbox_out)]; |
|
mbox_t *mbox = (mbox_t *)raw_mbox; |
|
int i; |
|
|
|
/* Flush adapter cache */ |
|
memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
|
raw_mbox[0] = FLUSH_ADAPTER; |
|
|
|
free_irq(adapter->host->irq, adapter); |
|
|
|
/* Issue a blocking (interrupts disabled) command to the card */ |
|
issue_scb_block(adapter, raw_mbox); |
|
|
|
/* Flush disks cache */ |
|
memset(&mbox->m_out, 0, sizeof(raw_mbox)); |
|
raw_mbox[0] = FLUSH_SYSTEM; |
|
|
|
/* Issue a blocking (interrupts disabled) command to the card */ |
|
issue_scb_block(adapter, raw_mbox); |
|
|
|
if (atomic_read(&adapter->pend_cmds) > 0) |
|
dev_warn(&adapter->dev->dev, "pending commands!!\n"); |
|
|
|
/* |
|
* Have a delibrate delay to make sure all the caches are |
|
* actually flushed. |
|
*/ |
|
for (i = 0; i <= 10; i++) |
|
mdelay(1000); |
|
} |
|
|
|
static void |
|
megaraid_remove_one(struct pci_dev *pdev) |
|
{ |
|
struct Scsi_Host *host = pci_get_drvdata(pdev); |
|
adapter_t *adapter = (adapter_t *)host->hostdata; |
|
char buf[12] = { 0 }; |
|
|
|
scsi_remove_host(host); |
|
|
|
__megaraid_shutdown(adapter); |
|
|
|
/* Free our resources */ |
|
if (adapter->flag & BOARD_MEMMAP) { |
|
iounmap((void *)adapter->base); |
|
release_mem_region(adapter->host->base, 128); |
|
} else |
|
release_region(adapter->base, 16); |
|
|
|
mega_free_sgl(adapter); |
|
|
|
sprintf(buf, "hba%d", adapter->host->host_no); |
|
remove_proc_subtree(buf, mega_proc_dir_entry); |
|
|
|
dma_free_coherent(&adapter->dev->dev, MEGA_BUFFER_SIZE, |
|
adapter->mega_buffer, adapter->buf_dma_handle); |
|
kfree(adapter->scb_list); |
|
dma_free_coherent(&adapter->dev->dev, sizeof(mbox64_t), |
|
adapter->una_mbox64, adapter->una_mbox64_dma); |
|
|
|
scsi_host_put(host); |
|
pci_disable_device(pdev); |
|
|
|
hba_count--; |
|
} |
|
|
|
static void |
|
megaraid_shutdown(struct pci_dev *pdev) |
|
{ |
|
struct Scsi_Host *host = pci_get_drvdata(pdev); |
|
adapter_t *adapter = (adapter_t *)host->hostdata; |
|
|
|
__megaraid_shutdown(adapter); |
|
} |
|
|
|
static struct pci_device_id megaraid_pci_tbl[] = { |
|
{PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID, |
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
|
{PCI_VENDOR_ID_AMI, PCI_DEVICE_ID_AMI_MEGARAID2, |
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
|
{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_AMI_MEGARAID3, |
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
|
{0,} |
|
}; |
|
MODULE_DEVICE_TABLE(pci, megaraid_pci_tbl); |
|
|
|
static struct pci_driver megaraid_pci_driver = { |
|
.name = "megaraid_legacy", |
|
.id_table = megaraid_pci_tbl, |
|
.probe = megaraid_probe_one, |
|
.remove = megaraid_remove_one, |
|
.shutdown = megaraid_shutdown, |
|
}; |
|
|
|
static int __init megaraid_init(void) |
|
{ |
|
int error; |
|
|
|
if ((max_cmd_per_lun <= 0) || (max_cmd_per_lun > MAX_CMD_PER_LUN)) |
|
max_cmd_per_lun = MAX_CMD_PER_LUN; |
|
if (max_mbox_busy_wait > MBOX_BUSY_WAIT) |
|
max_mbox_busy_wait = MBOX_BUSY_WAIT; |
|
|
|
#ifdef CONFIG_PROC_FS |
|
mega_proc_dir_entry = proc_mkdir("megaraid", NULL); |
|
if (!mega_proc_dir_entry) { |
|
printk(KERN_WARNING |
|
"megaraid: failed to create megaraid root\n"); |
|
} |
|
#endif |
|
error = pci_register_driver(&megaraid_pci_driver); |
|
if (error) { |
|
#ifdef CONFIG_PROC_FS |
|
remove_proc_entry("megaraid", NULL); |
|
#endif |
|
return error; |
|
} |
|
|
|
/* |
|
* Register the driver as a character device, for applications |
|
* to access it for ioctls. |
|
* First argument (major) to register_chrdev implies a dynamic |
|
* major number allocation. |
|
*/ |
|
major = register_chrdev(0, "megadev_legacy", &megadev_fops); |
|
if (!major) { |
|
printk(KERN_WARNING |
|
"megaraid: failed to register char device\n"); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void __exit megaraid_exit(void) |
|
{ |
|
/* |
|
* Unregister the character device interface to the driver. |
|
*/ |
|
unregister_chrdev(major, "megadev_legacy"); |
|
|
|
pci_unregister_driver(&megaraid_pci_driver); |
|
|
|
#ifdef CONFIG_PROC_FS |
|
remove_proc_entry("megaraid", NULL); |
|
#endif |
|
} |
|
|
|
module_init(megaraid_init); |
|
module_exit(megaraid_exit); |
|
|
|
/* vi: set ts=8 sw=8 tw=78: */
|
|
|