| From: |
| "Bagalkote, Sreenivas" <sreenib@lsil.com> |
| To: |
| "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>,
"'linux-scsi@vger.kernel.org'" <linux-scsi@vger.kernel.org> |
| Subject: |
| [ANNOUNCE][PATCH 2.6.11 2/3] megaraid_sas: Announcing new module
for LSI Logic's SAS based MegaRAID controllers |
| Date: |
| Mon, 7 Mar 2005 16:12:57 -0500 |
| Cc: |
| "'James Bottomley'" <James.Bottomley@SteelEye.com>,
"'Matt_Domsch@Dell.com'" <Matt_Domsch@Dell.com>,
Andrew Morton <akpm@osdl.org>,
"'Christoph Hellwig'" <hch@infradead.org> |
Patch 2 of 3:
diff -Naur linux-2.6.11-orig/drivers/scsi/megaraid/megaraid_sas.c
linux-2.6.11/drivers/scsi/megaraid/megaraid_sas.c
--- linux-2.6.11-orig/drivers/scsi/megaraid/megaraid_sas.c 1969-12-31
19:00:00.000000000 -0500
+++ linux-2.6.11/drivers/scsi/megaraid/megaraid_sas.c 2005-03-05
21:41:59.394225144 -0500
@@ -0,0 +1,2746 @@
+/*
+ *
+ * Linux MegaRAID driver for SAS based RAID controllers
+ *
+ * Copyright (c) 2003-2005 LSI Logic Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ * FILE : megaraid_sas.c
+ * Version : v00.00.01.00
+ *
+ * Authors:
+ * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com>
+ *
+ * List of supported controllers
+ *
+ * OEM Product Name VID DID SSVID SSID
+ * --- ------------ --- --- ---- ----
+ */
+
+#include "megaraid_sas.h"
+
+static int megasas_init (void);
+static void megasas_exit (void);
+
+static int megasas_probe_one (struct pci_dev*,
+ const struct
pci_device_id*);
+static void megasas_detach_one (struct pci_dev*);
+static void megasas_shutdown (struct device*);
+static void megasas_flush_cache (struct megasas_instance*);
+static void megasas_shutdown_controller (struct megasas_instance*);
+
+static int megasas_init_mfi (struct megasas_instance*);
+static void megasas_reset_mfi (struct megasas_instance*);
+
+static int megasas_transition_to_ready (struct
megasas_register_set*);
+
+static int megasas_alloc_cmds (struct megasas_instance*);
+static void megasas_free_cmds (struct megasas_instance*);
+static int megasas_create_frame_pool (struct megasas_instance*);
+static void megasas_teardown_frame_pool (struct megasas_instance*);
+
+static int megasas_start_aen (struct megasas_instance*);
+static int megasas_get_seq_num (struct megasas_instance*,
+ struct
megasas_evt_log_info*);
+static int megasas_register_aen (struct megasas_instance*,
+ uint32_t, uint32_t);
+static void megasas_service_aen (struct megasas_instance*,
+ struct megasas_cmd*);
+
+static int megasas_io_attach (struct megasas_instance*);
+static void megasas_io_detach (struct megasas_instance*);
+
+static int megasas_abort_handler (struct scsi_cmnd*);
+static int megasas_reset_handler (struct scsi_cmnd*);
+static int megasas_queue_command (struct scsi_cmnd*,
+ void (*) (struct
scsi_cmnd*));
+
+static int megasas_issue_polled (struct megasas_instance*,
+ struct megasas_cmd*);
+static int megasas_issue_blocked_cmd (struct megasas_instance*,
+ struct megasas_cmd*);
+
+static int megasas_sync_abort_cmd (struct megasas_instance*,
+ struct megasas_cmd*);
+static void megasas_complete_abort (struct megasas_instance*,
+ struct megasas_cmd*);
+
+static struct megasas_cmd* megasas_build_cmd (struct megasas_instance*,
+ struct scsi_cmnd*, int*);
+static int megasas_build_dcdb (struct megasas_instance*,
+ struct scsi_cmnd*,
+ struct megasas_cmd*);
+static int megasas_build_ldio (struct megasas_instance*,
+ struct scsi_cmnd*,
+ struct megasas_cmd*);
+
+static int megasas_make_sgl32 (struct megasas_instance*,
+ struct scsi_cmnd*,
+ union megasas_sgl*);
+static int megasas_make_sgl64 (struct megasas_instance*,
+ struct scsi_cmnd*,
+ union megasas_sgl*);
+
+static irqreturn_t megasas_isr (int, void *, struct pt_regs
*);
+static void megasas_complete_cmd (struct megasas_instance*,
+ struct megasas_cmd*);
+static void megasas_complete_int_cmd (struct megasas_instance*,
+ struct megasas_cmd*);
+
+static int megasas_mgmt_open (struct inode*, struct
file*);
+static int megasas_mgmt_release (struct inode*, struct
file*);
+static int megasas_mgmt_fasync (int, struct file*, int);
+static int megasas_mgmt_ioctl (struct inode*, struct
file*,
+ unsigned int, unsigned
long);
+
+static int megasas_mgmt_fw_ioctl (struct megasas_instance*,
+ void __user*);
+static int megasas_mgmt_fw_dcmd (struct megasas_instance*,
+ struct iocpacket*, void
__user*,
+ struct megasas_cmd*);
+static int megasas_mgmt_fw_smp (struct megasas_instance*,
+ struct iocpacket*, void
__user*,
+ struct megasas_cmd*);
+
+static ssize_t megasas_sysfs_show_app_hndl (struct class_device*,
char*);
+
+static void megasas_fill_drv_ver (struct megasas_drv_ver*);
+static int megasas_get_ctrl_info (struct megasas_instance*,
+ struct megasas_ctrl_info* );
+
+MODULE_LICENSE ("GPL");
+MODULE_VERSION (MEGASAS_VERSION);
+MODULE_AUTHOR ("LSI Logic Corporation");
+MODULE_DESCRIPTION ("LSI Logic MegaRAID SAS Driver");
+
+/*
+ * PCI ID table for all supported controllers
+ */
+static struct pci_device_id megasas_pci_table_g[] = {
+
+ {
+ PCI_VENDOR_ID_LSI_LOGIC,
+ PCI_DEVICE_LSI_1064,
+ PCI_SUBVENDOR_x0000,
+ PCI_SUBSYSTEM_x0000,
+ },
+ {
+ PCI_VENDOR_ID_LSI_LOGIC,
+ PCI_DEVICE_LSI_1064,
+ PCI_SUBVENDOR_x1000,
+ PCI_SUBSYSTEM_x0002,
+ },
+ {
+ PCI_VENDOR_ID_LSI_LOGIC,
+ PCI_DEVICE_LSI_1064,
+ PCI_SUBVENDOR_x1000,
+ PCI_SUBSYSTEM_x1001,
+ },
+ {
+ PCI_VENDOR_ID_DELL,
+ PCI_DEVICE_ID_PERC5,
+ PCI_VENDOR_ID_DELL,
+ PCI_SUBSYSTEM_PERC5H,
+ },
+ {
+ PCI_VENDOR_ID_DELL,
+ PCI_DEVICE_ID_PERC5,
+ PCI_VENDOR_ID_DELL,
+ PCI_SUBSYSTEM_PERC5L,
+ },
+ {
+ PCI_VENDOR_ID_DELL,
+ PCI_DEVICE_ID_PERC5,
+ PCI_VENDOR_ID_DELL,
+ PCI_SUBSYSTEM_PERC5I,
+ },
+ {
+ PCI_VENDOR_ID_LSI_LOGIC,
+ PCI_DEVICE_LSI_1064,
+ PCI_SUB_DEVICEID_FSC,
+ PCI_SUB_VENDORID_FSC,
+ },
+ { 0 } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(pci, megasas_pci_table_g);
+
+/*
+ * PCI hotplug support registration structure
+ */
+static struct pci_driver megasas_pci_driver = {
+
+ .name = "megaraid_sas",
+ .id_table = megasas_pci_table_g,
+ .probe = megasas_probe_one,
+ .remove = __devexit_p(megasas_detach_one),
+ .driver = {
+ .shutdown = megasas_shutdown,
+ }
+};
+
+/*
+ * Sysfs attribute definition: Exports driver specific controller handle
+ */
+CLASS_DEVICE_ATTR(megaraid_sas_app_hndl, S_IRUSR,
megasas_sysfs_show_app_hndl,
+
NULL);
+/*
+ * Host template initializer for sysfs attributes
+ */
+static struct class_device_attribute* megasas_shost_attrs[] = {
+ &class_device_attr_megaraid_sas_app_hndl,
+ NULL,
+};
+
+/*
+ * Scsi host template for megaraid mfi driver
+ */
+static struct scsi_host_template megasas_template_g = {
+
+ .module = THIS_MODULE,
+ .name = "LSI Logic SAS based MegaRAID
driver",
+ .proc_name = "megaraid_sas",
+ .queuecommand = megasas_queue_command,
+ .eh_abort_handler = megasas_abort_handler,
+ .eh_device_reset_handler = megasas_reset_handler,
+ .eh_bus_reset_handler = megasas_reset_handler,
+ .eh_host_reset_handler = megasas_reset_handler,
+ .use_clustering = ENABLE_CLUSTERING,
+ .shost_attrs = megasas_shost_attrs,
+};
+
+/*
+ * File opereations structure for management interface
+ */
+static struct file_operations megasas_mgmt_fops = {
+ .owner = THIS_MODULE,
+ .open = megasas_mgmt_open,
+ .release = megasas_mgmt_release,
+ .fasync = megasas_mgmt_fasync,
+ .ioctl = megasas_mgmt_ioctl,
+};
+
+static int megasas_mgmt_majorno;
+static struct megasas_mgmt_info megasas_mgmt_info;
+static struct fasync_struct* megasas_async_queue;
+static DECLARE_MUTEX (megasas_async_queue_mutex);
+static int is_dma64;
+
+/**
+ * megasas_get_cmd : Get a command from the free pool
+ */
+static inline struct megasas_cmd*
+megasas_get_cmd( struct megasas_instance* instance )
+{
+ unsigned long flags;
+ struct megasas_cmd* cmd;
+
+ spin_lock_irqsave(&instance->cmd_pool_lock, flags);
+
+ if ( list_empty(&instance->cmd_pool)) {
+ spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
+ return NULL;
+ }
+
+ cmd = list_entry((&instance->cmd_pool)->next, struct megasas_cmd,
list);
+
+ list_del_init( &cmd->list );
+
+ spin_unlock_irqrestore( &instance->cmd_pool_lock, flags );
+
+ return cmd;
+}
+
+/**
+ * megasas_return_cmd : Return a cmd to free command pool
+ */
+static inline void
+megasas_return_cmd( struct megasas_instance* instance, struct megasas_cmd*
cmd )
+{
+ unsigned long flags;
+
+ spin_lock_irqsave( &instance->cmd_pool_lock, flags );
+
+ list_add( &cmd->list, &instance->cmd_pool );
+
+ spin_unlock_irqrestore( &instance->cmd_pool_lock, flags );
+}
+
+/**
+ * megasas_make_sgl32 : return -1 or sge_count
+ */
+static inline int
+megasas_make_sgl32( struct megasas_instance* instance, struct scsi_cmnd*
scp,
+ union megasas_sgl* mfi_sgl )
+{
+ int i;
+ int sge_count;
+ struct scatterlist* os_sgl;
+ struct page* page;
+ unsigned long offset;
+
+ /*
+ * Return 0 if there is no data transfer
+ */
+ if (!scp->request_buffer || !scp->request_bufflen)
+ return 0;
+
+ if (!scp->use_sg) {
+ page = virt_to_page( scp->request_buffer );
+ offset = ((unsigned long)scp->request_buffer & ~PAGE_MASK);
+
+ mfi_sgl->sge32[0].phys_addr =
pci_map_page(instance->pdev,
+ page, offset,
+
scp->request_bufflen,
+
scp->sc_data_direction);
+ mfi_sgl->sge32[0].length = scp->request_bufflen;
+
+ return 1;
+ }
+
+ os_sgl = (struct scatterlist*) scp->request_buffer;
+ sge_count = pci_map_sg(instance->pdev, os_sgl, scp->use_sg,
+ scp->sc_data_direction );
+
+ for( i = 0; i < sge_count; i++, os_sgl++ ) {
+ mfi_sgl->sge32[i].length = sg_dma_len( os_sgl );
+ mfi_sgl->sge32[i].phys_addr = sg_dma_address( os_sgl );
+ }
+
+ return sge_count;
+}
+
+/**
+ * megasas_make_sgl64 : return -1 or sge_count
+ */
+static inline int
+megasas_make_sgl64( struct megasas_instance* instance, struct scsi_cmnd*
scp,
+ union megasas_sgl* mfi_sgl )
+{
+ int i;
+ int sge_count;
+ struct scatterlist* os_sgl;
+ struct page* page;
+ unsigned long offset;
+
+ /*
+ * Return 0 if there is no data transfer
+ */
+ if (!scp->request_buffer || !scp->request_bufflen)
+ return 0;
+
+ if (!scp->use_sg) {
+ page = virt_to_page( scp->request_buffer );
+ offset = ((unsigned long)scp->request_buffer & ~PAGE_MASK);
+
+ mfi_sgl->sge64[0].phys_addr =
pci_map_page(instance->pdev,
+ page, offset,
+
scp->request_bufflen,
+
scp->sc_data_direction);
+
+ mfi_sgl->sge64[0].length = scp->request_bufflen;
+
+ return 1;
+ }
+
+ os_sgl = (struct scatterlist*) scp->request_buffer;
+ sge_count = pci_map_sg(instance->pdev, os_sgl, scp->use_sg,
+ scp->sc_data_direction );
+
+ for( i = 0; i < sge_count; i++, os_sgl++ ) {
+ mfi_sgl->sge64[i].length = sg_dma_len( os_sgl );
+ mfi_sgl->sge64[i].phys_addr = sg_dma_address( os_sgl );
+ }
+
+ return sge_count;
+}
+
+
+/**
+ * megasas_init : Driver load entry point
+ */
+static int __init
+megasas_init( void )
+{
+ int rval;
+
+ /*
+ * Announce driver version and other information
+ */
+ printk( KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
+ MEGASAS_EXT_VERSION);
+
+ /*
+ * Initialize driver-wide structures
+ */
+ memset( &megasas_mgmt_info, 0, sizeof(struct megasas_mgmt_info));
+
+ is_dma64 = (sizeof(dma_addr_t) == 8) ? 1 : 0;
+
+ /*
+ * Register character device node
+ */
+ rval = register_chrdev(0, "megaraid_sas_ioctl",
&megasas_mgmt_fops);
+
+ if (rval < 0) {
+ printk( KERN_ERR "megasas: failed to open device node\n" );
+ return rval;
+ }
+
+ megasas_mgmt_majorno = rval;
+
+ /*
+ * Register ourselves as PCI hotplug module
+ */
+ rval = pci_module_init( &megasas_pci_driver );
+
+ if( rval )
+ printk(KERN_ERR "megasas: PCI hotplug regisration failed
\n");
+
+ return rval;
+}
+
+/**
+ * megasas_exit : Driver unload entry point
+ */
+static void __exit
+megasas_exit( void )
+{
+ pci_unregister_driver( &megasas_pci_driver );
+ unregister_chrdev( megasas_mgmt_majorno, "megaraid_sas_ioctl" );
+
+ printk( KERN_NOTICE "megasas: unloaded the driver\n" );
+
+ return;
+}
+
+/**
+ * megasas_probe_one
+ */
+static int __devinit
+megasas_probe_one( struct pci_dev *pdev, const struct pci_device_id *id )
+{
+ dma_addr_t instance_h;
+ struct megasas_instance* instance;
+
+ /*
+ * Announce PCI information
+ */
+ printk( KERN_INFO "megasas: probe new device "
+ "%#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
+ pdev->vendor, pdev->device,
+ pdev->subsystem_vendor, pdev->subsystem_device);
+
+ printk( KERN_INFO "megasas: bus %d:slot %d:func %d\n",
+ pdev->bus->number,
PCI_SLOT(pdev->devfn),PCI_FUNC(pdev->devfn));
+
+ /*
+ * PCI prepping: enable device set bus mastering and dma mask
+ */
+ if (pci_enable_device(pdev)) {
+ printk( KERN_ERR "megasas: pci_enable_device failed\n");
+ return -ENODEV;
+ }
+
+ pci_set_master(pdev);
+
+ /*
+ * All our contollers are capable of performing 64-bit DMA
+ */
+ if (is_dma64) {
+ if (pci_set_dma_mask( pdev, DMA_64BIT_MASK) != 0) {
+
+ printk( KERN_WARNING "megasas: failed to set 64 bit
\
+ dma mask; trying 32 bit mask\n" );
+
+ if (pci_set_dma_mask( pdev, DMA_32BIT_MASK ) != 0) {
+ printk( KERN_WARNING "megasas: failed to set
\
+ 32 bit dma mask \n"
);
+
+ goto fail_set_dma_mask;
+ }
+ }
+ }
+ else {
+ if (pci_set_dma_mask( pdev, DMA_32BIT_MASK ) != 0) {
+
+ printk( KERN_WARNING "megasas: failed to set 32 bit
\
+ dma mask \n"
);
+ goto fail_set_dma_mask;
+ }
+ }
+
+ /*
+ * We allocate DMA memory for instance soft state so that we can
+ * can directly pass adp->{member variable} to FW to get FW data.
+ * E.g, product information, configuration data etc.
+ */
+ instance = pci_alloc_consistent( pdev, sizeof(struct
megasas_instance),
+ &instance_h
);
+
+ if (!instance) {
+ printk(KERN_WARNING "megasas: out of memory!\n" );
+ goto fail_alloc_instance;
+ }
+
+ memset( instance, 0, sizeof(struct megasas_instance) );
+
+ /*
+ * Initialize locks and queues
+ */
+ INIT_LIST_HEAD( &instance->cmd_pool );
+
+ init_waitqueue_head( &instance->int_cmd_wait_q );
+ init_waitqueue_head( &instance->abort_cmd_wait_q );
+
+ spin_lock_init( &instance->cmd_pool_lock );
+ spin_lock_init( &instance->lock );
+
+ instance->host_lock = &instance->lock;
+
+ /*
+ * Initialize PCI related and misc parameters
+ */
+ instance->phys_addr = instance_h;
+ instance->pdev = pdev;
+ instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
+ instance->init_id = MEGADRV_DEFAULT_INIT_ID;
+ instance->aen_cmd = NULL;
+
+ /*
+ * Initialize MFI Firmware
+ */
+ if (megasas_init_mfi( instance ))
+ goto fail_init_mfi;
+
+ /*
+ * Register IRQ
+ */
+ if (request_irq(pdev->irq, megasas_isr, SA_SHIRQ, "megasas",
+ instance)) {
+ printk( KERN_ERR "megasas: Failed to register IRQ\n" );
+ goto fail_irq;
+ }
+
+ MFI_ENABLE_INTR( instance->reg_set );
+
+ /*
+ * Store instance in PCI softstate
+ */
+ pci_set_drvdata( pdev, instance );
+
+ /*
+ * Add this controller to megasas_mgmt_info structure so that it
+ * can be exported to management applications
+ */
+ megasas_mgmt_info.count++;
+ megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
+ megasas_mgmt_info.max_index++;
+
+ /*
+ * Initiate AEN
+ */
+ if (megasas_start_aen(instance)) {
+ printk( KERN_WARNING "megasas: failed to initiate aen\n" );
+ }
+
+ /*
+ * Register with SCSI mid-layer
+ */
+ if (megasas_io_attach( instance ))
+ goto fail_io_attach;
+
+ return 0;
+
+fail_io_attach:
+ megasas_mgmt_info.count--;
+ megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
+ megasas_mgmt_info.max_index--;
+
+ pci_set_drvdata( pdev, NULL );
+ MFI_DISABLE_INTR(instance->reg_set);
+ free_irq( instance->pdev->irq, instance );
+
+ megasas_reset_mfi( instance );
+
+fail_irq:
+fail_init_mfi:
+ pci_free_consistent( pdev, sizeof(struct megasas_instance),
+ instance, instance_h );
+fail_alloc_instance:
+fail_set_dma_mask:
+ pci_disable_device( pdev );
+
+ return -ENODEV;
+}
+
+/**
+ * megasas_detach_one
+ */
+static void
+megasas_detach_one( struct pci_dev *pdev )
+{
+ int i;
+ struct Scsi_Host* host;
+ struct megasas_instance* instance;
+ dma_addr_t instance_h;
+
+ instance = pci_get_drvdata( pdev );
+
+ if( !instance ) {
+ printk( KERN_ERR "megasas: Invalid detach\n" );
+ return;
+ }
+
+ host = instance->host;
+ instance_h = instance->phys_addr;
+
+ megasas_io_detach( instance );
+
+ megasas_flush_cache( instance );
+ megasas_shutdown_controller( instance );
+
+ /*
+ * Take the instance off the instance array. Note that we will not
+ * decrement the max_index. We let this array be sparse array
+ */
+ for (i = 0; i < megasas_mgmt_info.max_index; i++ ) {
+ if (megasas_mgmt_info.instance[i] == instance) {
+ megasas_mgmt_info.count--;
+ megasas_mgmt_info.instance[i] = NULL;
+
+ break;
+ }
+ }
+
+ pci_set_drvdata( instance->pdev, NULL );
+
+ MFI_DISABLE_INTR(instance->reg_set);
+
+ free_irq( instance->pdev->irq, instance );
+
+ megasas_reset_mfi( instance );
+
+ pci_free_consistent( instance->pdev, sizeof(struct
megasas_instance),
+ instance, instance_h
);
+ scsi_host_put( host );
+
+ pci_set_drvdata( pdev, NULL );
+
+ pci_disable_device( pdev );
+
+ return;
+}
+
+/**
+ * megasas_shutdown
+ */
+static void
+megasas_shutdown( struct device* device )
+{
+ int i;
+ struct megasas_instance* instance;
+
+ printk( KERN_NOTICE "megasas: shutting down...\n" );
+
+ for( i = 0; i < megasas_mgmt_info.max_index; i++ ) {
+ instance = megasas_mgmt_info.instance[i];
+
+ if (instance)
+ megasas_shutdown_controller( instance );
+ }
+}
+
+/**
+ * megasas_flush_cache
+ */
+static void
+megasas_flush_cache( struct megasas_instance* instance )
+{
+ struct megasas_cmd* cmd;
+ struct megasas_dcmd_frame* dcmd;
+
+ if (!(cmd = megasas_get_cmd( instance )))
+ return;
+
+ dcmd = &cmd->frame->dcmd;
+
+ memset( dcmd->mbox, 0, 12 );
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0x0;
+ dcmd->sge_count = 0;
+ dcmd->flags = MFI_FRAME_DIR_NONE;
+ dcmd->timeout = 0;
+ dcmd->data_xfer_len = 0;
+ dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
+ dcmd->mbox[0] = MR_FLUSH_CTRL_CACHE |
+ MR_FLUSH_DISK_CACHE;
+
+ megasas_issue_blocked_cmd( instance, cmd );
+
+ megasas_return_cmd( instance, cmd );
+
+ return;
+}
+
+/**
+ * megasas_shutdown_controller
+ */
+static void
+megasas_shutdown_controller( struct megasas_instance* instance )
+{
+ struct megasas_cmd* cmd;
+ struct megasas_dcmd_frame* dcmd;
+
+ if (!(cmd = megasas_get_cmd( instance )))
+ return;
+
+ dcmd = &cmd->frame->dcmd;
+
+ memset( dcmd->mbox, 0, 12 );
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0x0;
+ dcmd->sge_count = 0;
+ dcmd->flags = MFI_FRAME_DIR_NONE;
+ dcmd->timeout = 0;
+ dcmd->data_xfer_len = 0;
+ dcmd->opcode = MR_DCMD_CTRL_SHUTDOWN;
+ dcmd->mbox[0] = MR_ENABLE_DRIVE_SPINDOWN;
+
+ megasas_issue_blocked_cmd( instance, cmd );
+
+ megasas_return_cmd( instance, cmd );
+
+ return;
+}
+
+/**
+ * megasas_init_mfi
+ */
+static int
+megasas_init_mfi( struct megasas_instance* instance )
+{
+ uint32_t context_sz;
+ uint32_t reply_q_sz;
+ struct megasas_register_set* reg_set;
+
+ struct megasas_cmd* cmd;
+ struct megasas_ctrl_info ctrl_info;
+
+ struct megasas_init_frame* init_frame;
+ struct megasas_init_queue_info* initq_info;
+ dma_addr_t init_frame_h;
+ dma_addr_t initq_info_h;
+ dma_addr_t instance_h;
+
+ /*
+ * Map the message registers
+ */
+ instance->base_addr = pci_resource_start(instance->pdev, 0);
+
+ if (pci_request_regions(instance->pdev, "megasas: LSI Logic")) {
+ printk( KERN_ERR "megasas: mem region busy!\n");
+ return -EBUSY;
+ }
+
+ instance->reg_set = (struct megasas_register_set*) ioremap_nocache(
+ instance->base_addr, 8192);
+
+ if (!instance->reg_set) {
+ printk( KERN_ERR "megasas: failed to map io mem\n" );
+ goto fail_ioremap;
+ }
+
+ reg_set = instance->reg_set;
+
+ /*
+ * We expect the FW state to be READY
+ */
+ if (megasas_transition_to_ready(instance->reg_set))
+ goto fail_ready_state;
+
+ /*
+ * Get various operational parameters from status register
+ */
+ instance->max_num_sge = MFI_MAX_SUPP_SGES(reg_set);
+ instance->max_fw_cmds = MFI_MAX_SUPP_CMDS(reg_set);
+
+ /*
+ * Create a pool of commands
+ */
+ if (megasas_alloc_cmds(instance))
+ goto fail_alloc_cmds;
+
+ /*
+ * Allocate memory for reply queue. Length of reply queue should
+ * be one more than the maximum commands handled by the firmware.
+ */
+ context_sz = sizeof(uint32_t);
+ reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
+
+ instance->reply_queue = pci_alloc_consistent( instance->pdev,
+ reply_q_sz, &instance->reply_queue_phys_addr
);
+
+ if (!instance->reply_queue) {
+ printk( KERN_ERR "megasas: Out of DMA memory\n" );
+ goto fail_reply_queue;
+ }
+
+ /*
+ * Prepare a init frame. Note the init frame points to queue info
+ * structure. Each frame has SGL allocated after first 64 bytes. For
+ * this frame - since we don't need any SGL - we use SGL's space as
+ * queue info structure
+ */
+ cmd = megasas_get_cmd( instance );
+
+ init_frame = (struct megasas_init_frame*) cmd->frame;
+ initq_info = (struct megasas_init_queue_info*)
+ ((unsigned long)init_frame + 64);
+
+ instance_h = instance->phys_addr;
+ init_frame_h = cmd->frame_phys_addr;
+ initq_info_h = init_frame_h + 64;
+
+ memset( init_frame, 0, MEGAMFI_FRAME_SIZE );
+ memset( initq_info, 0, sizeof(struct megasas_init_queue_info));
+
+ initq_info->init_flags = 0;
+
+ initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
+ initq_info->reply_queue_start_phys_addr_lo =
+
instance->reply_queue_phys_addr;
+ initq_info->reply_queue_start_phys_addr_hi = 0;
+
+ initq_info->producer_index_phys_addr_hi = 0;
+ initq_info->producer_index_phys_addr_lo = instance_h + offsetof(
+ struct
megasas_instance,
+ producer);
+
+ initq_info->consumer_index_phys_addr_hi = 0;
+ initq_info->consumer_index_phys_addr_lo = instance_h + offsetof(
+ struct
megasas_instance,
+ consumer);
+
+ init_frame->cmd = MFI_CMD_INIT;
+ init_frame->cmd_status = 0xFF;
+ init_frame->flags = 0;
+ init_frame->queue_info_new_phys_addr_lo = initq_info_h;
+ init_frame->queue_info_new_phys_addr_hi = 0;
+
+ init_frame->data_xfer_len = sizeof( struct megasas_init_queue_info);
+
+ /*
+ * Issue the init frame in polled mode
+ */
+ if (megasas_issue_polled(instance, cmd )) {
+ printk( KERN_ERR "megasas: failed to init firmware\n" );
+ goto fail_fw_init;
+ }
+
+ megasas_return_cmd( instance, cmd );
+
+ /*
+ * Gather misc FW related information
+ */
+ if (!megasas_get_ctrl_info( instance, &ctrl_info ))
+ instance->max_sectors_per_req = ctrl_info.max_request_size;
+ else
+ instance->max_sectors_per_req = instance->max_num_sge *
+ PAGE_SIZE / 512;
+
+ return 0;
+
+fail_fw_init:
+ megasas_return_cmd( instance, cmd );
+
+ pci_free_consistent( instance->pdev, reply_q_sz,
+ instance->reply_queue,
+ instance->reply_queue_phys_addr );
+fail_reply_queue:
+ megasas_free_cmds( instance );
+
+fail_alloc_cmds:
+fail_ready_state:
+ iounmap( instance->reg_set );
+
+fail_ioremap:
+ pci_release_regions( instance->pdev );
+
+ return -EINVAL;
+}
+
+/**
+ * megasas_reset_mfi
+ */
+static void
+megasas_reset_mfi( struct megasas_instance* instance )
+{
+ uint32_t reply_q_sz = sizeof(uint32_t) * instance->max_fw_cmds;
+
+ pci_free_consistent( instance->pdev, reply_q_sz,
+ instance->reply_queue,
+ instance->reply_queue_phys_addr );
+
+ megasas_free_cmds( instance );
+
+ iounmap( instance->reg_set );
+
+ pci_release_regions( instance->pdev );
+}
+
+/**
+ * megasas_transition_to_ready : Move the FW to READY state
+ *
+ * @reg_set : MFI register set
+ */
+static int
+megasas_transition_to_ready( struct megasas_register_set* reg_set )
+{
+ int i;
+ uint8_t max_wait;
+ uint32_t fw_state;
+ uint32_t cur_state;
+
+ fw_state = RD_OB_MSG_0(reg_set) & MFI_STATE_MASK;
+
+ while( fw_state != MFI_STATE_READY ) {
+
+ switch( fw_state ) {
+
+ case MFI_STATE_FAULT:
+
+ printk(KERN_WARNING "megasas: FW in FAULT
state!!\n");
+ return -ENODEV;
+
+ case MFI_STATE_WAIT_HANDSHAKE:
+ /*
+ * Set the CLR bit in IMR0
+ */
+ printk(KERN_INFO "megasas: FW waiting for
HANDSHAKE\n");
+ WR_IN_MSG_0( MFI_INIT_CLEAR_HANDSHAKE, reg_set );
+
+ max_wait = 2;
+ cur_state = MFI_STATE_WAIT_HANDSHAKE;
+ break;
+
+ case MFI_STATE_OPERATIONAL:
+ /*
+ * Bring it to READY state; assuming max wait 2 secs
+ */
+ MFI_DISABLE_INTR(reg_set);
+ printk(KERN_INFO "megasas: FW in OPERATIONAL
state\n");
+ WR_IN_DOORBELL( MFI_INIT_READY, reg_set );
+
+ max_wait = 10;
+ cur_state = MFI_STATE_OPERATIONAL;
+ break;
+
+ case MFI_STATE_UNDEFINED:
+ /*
+ * This state should not last for more than 2
seconds
+ */
+ printk(KERN_INFO "FW state undefined\n");
+ max_wait = 2;
+ cur_state = MFI_STATE_UNDEFINED;
+ break;
+
+ case MFI_STATE_BB_INIT:
+ max_wait = 2;
+ cur_state = MFI_STATE_BB_INIT;
+ break;
+
+ case MFI_STATE_FW_INIT:
+ max_wait = 2;
+ cur_state = MFI_STATE_FW_INIT;
+ break;
+
+ case MFI_STATE_DEVICE_SCAN:
+ max_wait = 10;
+ cur_state = MFI_STATE_DEVICE_SCAN;
+ break;
+
+ default:
+ printk(KERN_ERR "megasas: Unknown state 0x%x\n",
+ fw_state);
+ return -ENODEV;
+ }
+
+ /*
+ * The cur_state should not last for more than max_wait secs
+ */
+ for( i = 0; i < (max_wait * 1000); i++ ) {
+ fw_state = RD_OB_MSG_0(reg_set) & MFI_STATE_MASK;
+
+ if (fw_state == cur_state) {
+ msleep(1);
+ }
+ else
+ break;
+ }
+
+ /*
+ * Return error if fw_state hasn't changed after max_wait
+ */
+ if (fw_state == cur_state) {
+ printk(KERN_ERR "FW state hasn't changed in %d
secs\n",
+ max_wait);
+ return -ENODEV;
+ }
+ };
+
+ return 0;
+}
+
+/**
+ * megasas_alloc_cmds
+ */
+static int
+megasas_alloc_cmds( struct megasas_instance* instance )
+{
+ int i;
+ uint32_t max_cmd;
+ struct megasas_cmd* cmd;
+
+ max_cmd = instance->max_fw_cmds;
+
+ /*
+ * Alloc mem for all cmds in one chunk
+ */
+ instance->cmd_list = kmalloc( sizeof(struct megasas_cmd) * max_cmd,
+ GFP_KERNEL);
+
+ if (!instance->cmd_list) {
+ printk( KERN_ERR "megasas: out of memory\n" );
+ return -ENOMEM;
+ }
+
+ memset( instance->cmd_list, 0, sizeof(struct megasas_cmd)*max_cmd );
+
+ /*
+ * Slice cmd_list into individual cmds and add to cmd_pool
+ */
+ for( i = 0, cmd = instance->cmd_list; i < max_cmd; i++, cmd++ ) {
+ cmd->index = i;
+ list_add_tail( &cmd->list, &instance->cmd_pool );
+ }
+
+ /*
+ * Create a frame pool and assign one frame to each cmd
+ */
+ if (megasas_create_frame_pool( instance )) {
+ printk(KERN_ERR "megasas: error creating DMA pool\n");
+ megasas_free_cmds( instance );
+ }
+
+ return 0;
+}
+
+/**
+ * megasas_free_cmds
+ */
+static void
+megasas_free_cmds( struct megasas_instance* instance )
+{
+ /* First free the MFI frame pool */
+ megasas_teardown_frame_pool( instance );
+
+ /* Free the cmd_list buffer itself */
+ if (instance->cmd_list ) {
+ kfree( instance->cmd_list );
+ instance->cmd_list = NULL;
+ }
+
+ INIT_LIST_HEAD( &instance->cmd_pool );
+}
+
+/**
+ * megasas_create_frame_pool
+ */
+static int
+megasas_create_frame_pool( struct megasas_instance* instance )
+{
+ int i;
+ uint32_t max_cmd;
+ uint32_t sge_sz;
+ uint32_t sgl_sz;
+ uint32_t total_sz ;
+ uint32_t frame_count;
+ struct megasas_cmd* cmd;
+
+ max_cmd = instance->max_fw_cmds;
+
+ /*
+ * Size of our frame is 64 bytes for MFI frame, followed by max SG
+ * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
+ */
+ sge_sz = (is_dma64) ? sizeof(struct megasas_sge64) :
+ sizeof(struct megasas_sge32);
+
+ /*
+ * Calculated the number of 64byte frames required for SGL
+ */
+ sgl_sz = sge_sz * instance->max_num_sge;
+ frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE -
1)/MEGAMFI_FRAME_SIZE;
+
+ /*
+ * We need one extra frame for the MFI command
+ */
+ frame_count++;
+
+ total_sz = MEGAMFI_FRAME_SIZE * frame_count;
+ /*
+ * Use DMA pool facility provided by PCI layer
+ */
+ instance->frame_dma_pool = pci_pool_create( "megasas frame pool",
+ instance->pdev, total_sz, 64, 0 );
+
+ instance->sense_dma_pool = pci_pool_create( "megasas sense pool",
+ instance->pdev, 128, 4, 0 );
+
+ if (!instance->frame_dma_pool || !instance->sense_dma_pool) {
+ printk( KERN_ERR "megasas: failed to setup DMA pool\n" );
+ return -ENOMEM;
+ }
+
+ /*
+ * Allocate and attach a frame to each of the commands in cmd_list.
+ * By making cmd->index as the context instead of the &cmd, we can
+ * always use 32bit context regardless of the architecture
+ */
+ for( i = 0, cmd = instance->cmd_list; i < max_cmd; i++, cmd++ ) {
+
+ cmd->frame = pci_pool_alloc( instance->frame_dma_pool,
+ GFP_KERNEL, &cmd->frame_phys_addr );
+
+ cmd->sense = pci_pool_alloc( instance->sense_dma_pool,
+ GFP_KERNEL, &cmd->sense_phys_addr );
+
+ if (!cmd->frame || !cmd->sense) {
+ printk(KERN_ERR "megasas: pci_pool_alloc failed
\n");
+ megasas_teardown_frame_pool( instance );
+ return -ENOMEM;
+ }
+
+ cmd->frame->io.context = cmd->index;
+ }
+
+ return 0;
+}
+
+/**
+ * megasas_teardown_frame_pool
+ */
+static void
+megasas_teardown_frame_pool( struct megasas_instance* instance )
+{
+ int i;
+ uint32_t max_cmd = instance->max_fw_cmds;
+ struct megasas_cmd* cmd;
+
+ if (!instance->frame_dma_pool)
+ return;
+
+ /*
+ * Return all frames to pool
+ */
+ for( i = 0, cmd = instance->cmd_list; i < max_cmd; i++, cmd++ ) {
+ if( cmd->frame)
+ pci_pool_free( instance->frame_dma_pool, cmd->frame,
+ cmd->frame_phys_addr );
+
+ if (cmd->sense)
+ pci_pool_free( instance->sense_dma_pool, cmd->frame,
+ cmd->sense_phys_addr );
+ }
+
+ /*
+ * Now destroy the pool itself
+ */
+ pci_pool_destroy( instance->frame_dma_pool );
+ pci_pool_destroy( instance->sense_dma_pool );
+
+ instance->frame_dma_pool = NULL;
+ instance->sense_dma_pool = NULL;
+}
+
+/**
+ * megasas_start_aen
+ */
+static int
+megasas_start_aen( struct megasas_instance* instance )
+{
+ int ret;
+ struct megasas_evt_log_info eli;
+ union megasas_evt_class_locale class_locale;
+
+ /*
+ * Get the latest sequence number from FW
+ */
+ memset( &eli, 0, sizeof(struct megasas_evt_log_info) );
+
+ if (megasas_get_seq_num( instance, &eli )) {
+ printk( KERN_WARNING "megasas: failed to get seq num\n" );
+ return -1;
+ }
+
+ /*
+ * Register AEN with FW for latest sequence number plus 1
+ */
+ class_locale.members.reserved = 0;
+ class_locale.members.locale = MR_EVT_LOCALE_ALL;
+ class_locale.members.class = MR_EVT_CLASS_DEBUG;
+
+ ret = megasas_register_aen( instance, eli.newest_seq_num + 1,
+ class_locale.word );
+ if (ret) {
+ printk( KERN_WARNING "megasas: aen registration failed\n" );
+ return -1;
+ }
+
+ return 0;
+}
+
+/**
+ * megasas_get_seq_num
+ */
+static int
+megasas_get_seq_num( struct megasas_instance* instance,
+ struct megasas_evt_log_info* eli)
+{
+ int i;
+ int ret = 0;
+ struct megasas_cmd* cmd;
+ struct megasas_dcmd_frame* dcmd;
+ struct megasas_evt_log_info* el_info;
+ dma_addr_t el_info_h;
+
+ cmd = megasas_get_cmd( instance );
+
+ if (!cmd) {
+ printk( KERN_ERR "megasas: failed to get a cmd\n" );
+ return -ENOMEM;
+ }
+
+ dcmd = &cmd->frame->dcmd;
+ el_info = pci_alloc_consistent( instance->pdev,
+ sizeof(struct megasas_evt_log_info),
+ &el_info_h );
+
+ if (!el_info) {
+ printk( KERN_ERR "megasas: cannot alloc mem for el_info\n"
);
+
+ megasas_return_cmd( instance, cmd );
+ return -ENOMEM;
+ }
+
+ memset( el_info, 0, sizeof(struct megasas_evt_log_info) );
+ for( i = 0; i < 12; i++ ) dcmd->mbox[i] = 0;
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0x0;
+ dcmd->sge_count = 1;
+ dcmd->flags = MFI_FRAME_DIR_READ;
+ dcmd->timeout = 0;
+ dcmd->data_xfer_len = sizeof(struct
megasas_evt_log_info);
+ dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
+ dcmd->sgl.sge32[0].phys_addr = el_info_h;
+ dcmd->sgl.sge32[0].length = sizeof(struct
megasas_evt_log_info);
+
+ if (!megasas_issue_blocked_cmd( instance, cmd )) {
+ ret = 0;
+ }
+ else {
+ ret = -1;
+ printk( KERN_WARNING "megasas: failed to issue el_info\n" );
+ }
+
+ /*
+ * Copy the data back into callers buffer
+ */
+ if (!ret)
+ memcpy( eli, el_info, sizeof(struct megasas_evt_log_info) );
+
+ pci_free_consistent(instance->pdev, sizeof(struct
megasas_evt_log_info),
+ el_info, el_info_h);
+
+ megasas_return_cmd( instance, cmd );
+
+ return ret;
+}
+
+/**
+ * megasas_register_aen
+ */
+static int
+megasas_register_aen( struct megasas_instance* instance, uint32_t seq_num,
+ uint32_t locale )
+{
+ struct megasas_cmd* cmd;
+ struct megasas_dcmd_frame* dcmd;
+ struct megasas_evt_detail* evt_detail;
+ dma_addr_t evt_detail_h;
+ uint32_t* mbox_word;
+
+ cmd = megasas_get_cmd( instance );
+
+ if (!cmd) {
+ printk( KERN_ERR "megasas: failed to get a cmd for aen\n" );
+ return -ENOMEM;
+ }
+
+ dcmd = &cmd->frame->dcmd;
+ mbox_word = (uint32_t*) dcmd->mbox;
+ evt_detail = &instance->evt_detail;
+ evt_detail_h = instance->phys_addr +
+ offsetof(struct megasas_instance,
evt_detail);
+
+ memset( evt_detail, 0, sizeof(struct megasas_evt_detail));
+
+ /*
+ * Prepare DCMD for aen registration
+ */
+ memset( dcmd->mbox, 0, 12 );
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0x0;
+ dcmd->sge_count = 1;
+ dcmd->flags = MFI_FRAME_DIR_READ;
+ dcmd->timeout = 0;
+ dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
+ dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
+ mbox_word[0] = seq_num;
+ mbox_word[1] = locale;
+ dcmd->sgl.sge32[0].phys_addr = (uint32_t)(evt_detail_h & 0xFFFF);
+ dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
+
+ /*
+ * Store reference to the cmd used to register for AEN. When an
+ * application wants us to register for AEN, we have to abort this
+ * cmd and re-register with a new EVENT LOCALE supplied by that app
+ */
+ instance->aen_cmd = cmd;
+
+ /*
+ * Issue the aen registration frame
+ */
+ WR_IN_QPORT( (cmd->frame_phys_addr >> 3), instance->reg_set );
+
+ return 0;
+}
+
+/**
+ * megasas_service_aen
+ */
+static void
+megasas_service_aen(struct megasas_instance* instance, struct megasas_cmd*
cmd)
+{
+ /*
+ * Don't signal app if it is just an aborted previously registered
aen
+ */
+ if (!cmd->abort_aen)
+ kill_fasync( &megasas_async_queue, SIGIO, POLL_IN );
+ else
+ cmd->abort_aen = 0;
+
+ instance->aen_cmd = NULL;
+ megasas_return_cmd( instance, cmd );
+}
+
+/**
+ * megasas_ioc_attach
+ */
+static int
+megasas_io_attach( struct megasas_instance* instance )
+{
+ struct Scsi_Host* host;
+
+ host = scsi_host_alloc(&megasas_template_g, sizeof(void*));
+
+ if (!host) {
+ printk( KERN_ERR "megasas: scsi_host_alloc failed\n" );
+ return -ENODEV;
+ }
+
+ SCSIHOST2ADAP(host) = (caddr_t) instance;
+ instance->host = host;
+
+ /*
+ * Export parameters required by SCSI mid-layer
+ */
+ scsi_assign_lock( host, instance->host_lock );
+ scsi_set_device( host, &instance->pdev->dev );
+
+ host->irq = instance->pdev->irq;
+ host->unique_id = instance->unique_id;
+ host->can_queue = instance->max_fw_cmds;
+ host->this_id = instance->init_id;
+ host->sg_tablesize = instance->max_num_sge;
+ host->max_sectors = instance->max_sectors_per_req;
+ host->cmd_per_lun = MEGADRV_MAX_CMD_PER_LUN;
+ host->max_channel = MEGADRV_MAX_CHANNELS - 1;
+ host->max_id = MEGADRV_MAX_DEV_PER_CHANNEL;
+ host->max_lun = MEGADRV_MAX_LUN;
+
+ /*
+ * Notify the mid-layer about the new controller
+ */
+ if (scsi_add_host(host, &instance->pdev->dev)) {
+
+ printk( KERN_ERR "megasas: scsi_add_host failed\n" );
+ scsi_host_put( host );
+
+ return -ENODEV;
+ }
+
+ /*
+ * Trigger SCSI to scan our drives
+ */
+ scsi_scan_host( host );
+
+ return 0;
+}
+
+/**
+ * megasas_io_detach
+ */
+static void
+megasas_io_detach( struct megasas_instance* instance )
+{
+ if (instance->host)
+ scsi_remove_host( instance->host );
+}
+
+/**
+ * megasas_abort_handler
+ */
+static int
+megasas_abort_handler( struct scsi_cmnd* scmd )
+{
+ printk( KERN_NOTICE "megasas: ABORT -%ld cmd=%x <c=%d t=%d l=%d>\n",
+ scmd->serial_number, scmd->cmnd[0], SCP2CHANNEL(scmd),
+ SCP2TARGET(scmd), SCP2LUN(scmd));
+
+ return FAILED;
+}
+
+/**
+ * megasas_reset_handler
+ */
+static int
+megasas_reset_handler( struct scsi_cmnd* scmd )
+{
+ int i;
+ uint32_t wait_time = MEGADRV_RESET_WAIT_TIME;
+ uint32_t outstanding;
+ struct megasas_instance* instance = SCP2ADAPTER(scmd);
+
+ spin_unlock( instance->host_lock );
+
+ printk( KERN_NOTICE "megasas: RESET -%ld cmd=%x <c=%d t=%d l=%d>\n",
+ scmd->serial_number, scmd->cmnd[0], SCP2CHANNEL(scmd),
+ SCP2TARGET(scmd), SCP2LUN(scmd));
+
+
+ for( i = 0; i < wait_time; i++ ) {
+
+ outstanding = instance->producer - instance->consumer;
+
+ if (!outstanding)
+ break;
+
+ if (outstanding < 0)
+ outstanding = instance->max_fw_cmds + 1
+ -
instance->consumer;
+ if (!(i % MEGADRV_RESET_NOTICE_INTERVAL)) {
+ printk( KERN_NOTICE "megasas: [%2d]waiting for %d \
+ commands to complete\n", i, outstanding );
+ }
+
+ msleep(1000);
+ }
+
+ spin_lock( instance->host_lock );
+
+ if (outstanding) {
+ printk( KERN_CRIT "megasas: failed to do reset\n");
+ return FAILED;
+ }
+
+ printk( KERN_NOTICE "megasas: reset successful \n" );
+
+ return SUCCESS;
+}
+
+/**
+ * megasas_queue_command
+ */
+static int
+megasas_queue_command( struct scsi_cmnd* scmd, void (*done)(struct
scsi_cmnd*) )
+{
+ uint32_t frame_count;
+ struct megasas_cmd* cmd;
+ struct megasas_instance* instance;
+ uint32_t msg_frame;
+
+ instance = SCP2ADAPTER(scmd);
+ scmd->scsi_done = done;
+ scmd->result = 0;
+
+ cmd = megasas_build_cmd( instance, scmd, &frame_count );
+
+ if (!cmd) {
+ done(scmd);
+ return 0;
+ }
+
+ cmd->scmd = scmd;
+
+ /*
+ * Issue the command to the FW
+ */
+ msg_frame = (cmd->frame_phys_addr >> 3) | (cmd->frame_count - 1);
+
+ WR_IN_QPORT( msg_frame, instance->reg_set );
+
+ return 0;
+}
+
+/**
+ * megasas_issue_polled
+ */
+static int
+megasas_issue_polled(struct megasas_instance* instance, struct megasas_cmd*
cmd)
+{
+ int i;
+ uint32_t msecs = MFI_POLL_TIMEOUT_SECS * 1000;
+
+ struct megasas_header* frame_hdr = (struct
megasas_header*)cmd->frame;
+
+ frame_hdr->cmd_status = 0xFF;
+ frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
+
+ /*
+ * Issue the frame using inbound queue port
+ */
+ WR_IN_QPORT( (cmd->frame_phys_addr >> 3), instance->reg_set );
+
+ /*
+ * Wait for cmd_status to change
+ */
+ for( i=0; i < msecs && (frame_hdr->cmd_status == 0xff); i++ ) {
+ rmb();
+ msleep(1);
+ }
+
+ if (frame_hdr->cmd_status == 0xff)
+ return -ETIME;
+
+ return 0;
+}
+
+/**
+ * megasas_issue_blocked_cmd
+ */
+static int
+megasas_issue_blocked_cmd( struct megasas_instance* instance,
+ struct megasas_cmd* cmd )
+{
+ uint32_t msg_frame;
+
+ cmd->cmd_status = ENODATA;
+ msg_frame = (cmd->frame_phys_addr >> 3);
+
+ WR_IN_QPORT( msg_frame, instance->reg_set );
+
+ wait_event( instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA));
+
+ return 0;
+}
+
+/**
+ * megasas_sync_abort_cmd
+ */
+static int
+megasas_sync_abort_cmd( struct megasas_instance* instance,
+ struct megasas_cmd* cmd_to_abort )
+{
+ struct megasas_cmd* cmd;
+ struct megasas_abort_frame* abort_fr;
+
+ cmd = megasas_get_cmd( instance );
+
+ if (!cmd)
+ return -1;
+
+ abort_fr = &cmd->frame->abort;
+
+ /*
+ * Prepare and issue the abort frame
+ */
+ abort_fr->cmd = MFI_CMD_ABORT;
+ abort_fr->cmd_status = 0xFF;
+ abort_fr->flags = 0;
+ abort_fr->abort_context = cmd_to_abort->index;
+ abort_fr->abort_mfi_phys_addr_lo =
cmd_to_abort->frame_phys_addr;
+ abort_fr->abort_mfi_phys_addr_hi = 0;
+
+ WR_IN_QPORT( (cmd->frame_phys_addr >> 3), instance->reg_set );
+
+ /*
+ * Wait for this cmd to complete
+ */
+ cmd->sync_cmd = 1;
+ wait_event( instance->abort_cmd_wait_q, (cmd->cmd_status != 0xFF));
+
+ megasas_return_cmd( instance, cmd );
+
+ return 0;
+}
+
+/**
+ * megasas_complete_abort
+ */
+static void
+megasas_complete_abort( struct megasas_instance* instance,
+ struct megasas_cmd* cmd )
+{
+ if (cmd->sync_cmd) {
+ cmd->sync_cmd = 0;
+ wake_up( &instance->abort_cmd_wait_q );
+ }
+
+ return;
+}
+
+/**
+ * megasas_build_cmd
+ */
+static struct megasas_cmd*
+megasas_build_cmd( struct megasas_instance* instance, struct scsi_cmnd*
scp,
+ int* frame_count )
+{
+ uint32_t logical_cmd;
+ struct megasas_cmd* cmd;
+
+ /*
+ * Find out if this is logical or physical drive command.
+ */
+ logical_cmd = MEGADRV_IS_LOGICAL(scp);
+
+ /*
+ * Logical drive command
+ */
+ if (logical_cmd) {
+
+ if (SCP2TARGET(scp) >= MEGADRV_MAX_LD) {
+ scp->result = DID_BAD_TARGET << 16;
+ return NULL;
+ }
+
+ switch(scp->cmnd[0]) {
+
+ case READ_10:
+ case WRITE_10:
+ case READ_12:
+ case WRITE_12:
+ case READ_6:
+ case WRITE_6:
+ case READ_16:
+ case WRITE_16:
+ /*
+ * Fail for LUN > 0
+ */
+ if (SCP2LUN(scp)) {
+ scp->result = DID_BAD_TARGET << 16;
+ return NULL;
+ }
+
+ if (!(cmd = megasas_get_cmd(instance))) {
+ scp->result = DID_ERROR << 16;
+ return NULL;
+ }
+
+ *frame_count = megasas_build_ldio(instance, scp,
cmd);
+
+ if (! (*frame_count) ) {
+ printk( "megasas: build_ldio error\n" );
+
+ megasas_return_cmd( instance, cmd );
+
+ return NULL;
+ }
+
+ return cmd;
+
+ case REPORT_LUNS:
+ scp->result = DID_ERROR << 16;
+ return NULL;
+
+ default:
+ /*
+ * Fail for LUN > 0
+ */
+ if (SCP2LUN(scp)) {
+ scp->result = DID_BAD_TARGET << 16;
+ return NULL;
+ }
+
+ if (!(cmd = megasas_get_cmd( instance ))) {
+ scp->result = DID_ERROR << 16;
+ return NULL;
+ }
+
+ *frame_count = megasas_build_dcdb(instance, scp,
cmd);
+
+ if (! (*frame_count) ) {
+ printk( "megasas: build_dcdb error\n" );
+
+ megasas_return_cmd( instance, cmd );
+
+ return NULL;
+ }
+
+ return cmd;
+ }
+ }
+ else {
+ scp->result = DID_BAD_TARGET << 16;
+ return NULL;
+ }
+
+ return NULL;
+}
+
+/**
+ * megasas_build_dcdb
+ */
+static int
+megasas_build_dcdb( struct megasas_instance* instance, struct scsi_cmnd*
scp,
+ struct megasas_cmd* cmd )
+{
+ uint32_t sge_sz;
+ int sge_bytes;
+ uint32_t is_logical;
+ uint32_t device_id;
+ uint16_t flags = 0;
+ struct megasas_pthru_frame* pthru;
+
+ is_logical = MEGADRV_IS_LOGICAL(scp);
+ device_id = MEGADRV_DEV_INDEX(instance, scp);
+ pthru = (struct megasas_pthru_frame_t*)
cmd->frame;
+
+ if (scp->sc_data_direction == PCI_DMA_TODEVICE )
+ flags = MFI_FRAME_DIR_WRITE;
+ else if( scp->sc_data_direction == PCI_DMA_FROMDEVICE )
+ flags = MFI_FRAME_DIR_READ;
+ else if( scp->sc_data_direction == PCI_DMA_NONE )
+ flags = MFI_FRAME_DIR_NONE;
+
+ /*
+ * Prepare the DCDB frame
+ */
+ pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO :
+ MFI_CMD_PD_SCSI_IO;
+ pthru->cmd_status = 0x0;
+ pthru->scsi_status = 0x0;
+ pthru->target_id = device_id;
+ pthru->lun = SCP2LUN(scp);
+ pthru->cdb_len = scp->cmd_len;
+ pthru->timeout = 0;
+ pthru->flags = flags;
+ pthru->data_xfer_len = scp->request_bufflen;
+
+ memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
+
+ /*
+ * Construct SGL
+ */
+ sge_sz = (is_dma64) ? sizeof(struct megasas_sge64) :
+ sizeof(struct megasas_sge32);
+
+ if (is_dma64) {
+ pthru->flags |= MFI_FRAME_SGL64;
+ pthru->sge_count = megasas_make_sgl64( instance, scp,
+ &pthru->sgl
);
+ }
+ else
+ pthru->sge_count = megasas_make_sgl32( instance, scp,
+ &pthru->sgl
);
+
+ /*
+ * Sense info specific
+ */
+ pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
+ pthru->sense_buf_phys_addr_hi = 0;
+ pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
+
+ sge_bytes = sge_sz * pthru->sge_count;
+
+ cmd->frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
+ ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) +
1;
+
+ if (cmd->frame_count > 7)
+ cmd->frame_count = 8;
+
+ return cmd->frame_count;
+}
+
+/**
+ * megasas_build_ldio
+ */
+static int
+megasas_build_ldio( struct megasas_instance* instance, struct scsi_cmnd*
scp,
+ struct megasas_cmd* cmd )
+{
+ uint32_t sge_sz;
+ int sge_bytes;
+ uint32_t device_id;
+ uint8_t sc = scp->cmnd[0];
+ uint16_t flags = 0;
+
+ struct megasas_io_frame* ldio;
+
+ device_id = MEGADRV_DEV_INDEX(instance, scp);
+ ldio = (struct megasas_io_frame*) cmd->frame;
+
+ if (scp->sc_data_direction == PCI_DMA_TODEVICE )
+ flags = MFI_FRAME_DIR_WRITE;
+ else if( scp->sc_data_direction == PCI_DMA_FROMDEVICE )
+ flags = MFI_FRAME_DIR_READ;
+
+ /*
+ * Preare the Logical IO frame: 2nd bit is zero for all read cmds
+ */
+ ldio->cmd = (sc &
0x02)?MFI_CMD_LD_WRITE:MFI_CMD_LD_READ;
+ ldio->cmd_status = 0x0;
+ ldio->scsi_status = 0x0;
+ ldio->target_id = device_id;
+ ldio->timeout = 0;
+ ldio->reserved_0 = 0;
+ ldio->pad_0 = 0;
+ ldio->flags = flags;
+ ldio->start_lba_hi = 0;
+ ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
+
+ /*
+ * 6-byte READ(0x08) or WRITE(0x0A) cdb
+ */
+ if (scp->cmd_len == 6) {
+ ldio->lba_count = (uint32_t)scp->cmnd[4];
+ ldio->start_lba_lo = ((uint32_t)scp->cmnd[1] <<
16)|
+ ((uint32_t)scp->cmnd[2] <<
8) |
+ (uint32_t)scp->cmnd[3];
+
+ ldio->start_lba_lo &= 0x1FFFFF;
+ }
+
+ /*
+ * 10-byte READ(0x28) or WRITE(0x2A) cdb
+ */
+ else if (scp->cmd_len == 10) {
+ ldio->lba_count = (uint32_t)scp->cmnd[8] |
+ ((uint32_t)scp->cmnd[7] <<
8);
+ ldio->start_lba_lo = ((uint32_t)scp->cmnd[2] <<
24)|
+ ((uint32_t)scp->cmnd[3] <<
16)|
+ ((uint32_t)scp->cmnd[4] <<
8)|
+ (uint32_t)scp->cmnd[5];
+ }
+
+ /*
+ * 12-byte READ(0xA8) or WRITE(0xAA) cdb
+ */
+ else if (scp->cmd_len == 12) {
+ ldio->lba_count = ((uint32_t)scp->cmnd[6] <<
24)|
+ ((uint32_t)scp->cmnd[7] <<
16)|
+ ((uint32_t)scp->cmnd[8] <<
8) |
+ (uint32_t)scp->cmnd[9];
+
+ ldio->start_lba_lo = ((uint32_t)scp->cmnd[2] <<
24)|
+ ((uint32_t)scp->cmnd[3] <<
16)|
+ ((uint32_t)scp->cmnd[4] <<
8) |
+ (uint32_t)scp->cmnd[5];
+ }
+
+ /*
+ * 16-byte READ(0x88) or WRITE(0x8A) cdb
+ */
+ else if (scp->cmd_len == 16) {
+ ldio->lba_count = ((uint32_t)scp->cmnd[10] <<
24)|
+ ((uint32_t)scp->cmnd[11] <<
16)|
+ ((uint32_t)scp->cmnd[12] <<
8) |
+ (uint32_t)scp->cmnd[13];
+
+ ldio->start_lba_lo = ((uint32_t)scp->cmnd[6] <<
24)|
+ ((uint32_t)scp->cmnd[7] <<
16)|
+ ((uint32_t)scp->cmnd[8] <<
8) |
+ (uint32_t)scp->cmnd[9];
+
+ ldio->start_lba_hi = ((uint32_t)scp->cmnd[2] <<
24)|
+ ((uint32_t)scp->cmnd[3] <<
16)|
+ ((uint32_t)scp->cmnd[4] <<
8) |
+ (uint32_t)scp->cmnd[5];
+
+ }
+
+ /*
+ * Construct SGL
+ */
+ sge_sz = (is_dma64) ? sizeof(struct megasas_sge64) :
+ sizeof(struct megasas_sge32);
+
+ if (is_dma64) {
+ ldio->flags |= MFI_FRAME_SGL64;
+ ldio->sge_count = megasas_make_sgl64( instance, scp,
+ &ldio->sgl
);
+ }
+ else
+ ldio->sge_count = megasas_make_sgl32( instance, scp,
+ &ldio->sgl
);
+
+ /*
+ * Sense info specific
+ */
+ ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
+ ldio->sense_buf_phys_addr_hi = 0;
+ ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
+
+ sge_bytes = sge_sz * ldio->sge_count;
+
+ cmd->frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
+ ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) +
1;
+
+ if (cmd->frame_count > 7)
+ cmd->frame_count = 8;
+
+ return cmd->frame_count;
+}
+
+/**
+ * megasas_isr
+ */
+static irqreturn_t
+megasas_isr(int irq, void *devp, struct pt_regs *regs)
+{
+ uint32_t status;
+ int32_t completed;
+ uint32_t producer;
+ uint32_t consumer;
+ uint32_t context;
+
+ struct megasas_instance* instance;
+ struct megasas_register_set* reg_set;
+ struct megasas_cmd* cmd;
+
+ instance = (struct megasas_instance*) devp;
+ reg_set = instance->reg_set;
+
+ /*
+ * Check if it is our interrupt
+ */
+ status = RD_OB_INTR_STATUS(reg_set);
+
+ if (! (status & MFI_OB_INTR_STATUS_MASK)) {
+ return IRQ_NONE;
+ }
+
+ /*
+ * Clear the interrupt by writing back the same value
+ */
+ WR_OB_INTR_STATUS(status, reg_set);
+
+ producer = instance->producer;
+ consumer = instance->consumer;
+ completed = producer - consumer;
+
+ if (completed < 0) {
+ completed = instance->max_fw_cmds + 1 - consumer;
+ }
+
+ while( completed-- ) {
+ context = instance->reply_queue[consumer];
+
+ cmd = &(instance->cmd_list)[context];
+
+ megasas_complete_cmd( instance, cmd );
+
+ consumer++;
+ if (consumer > instance->max_fw_cmds + 1) {
+ consumer = 0;
+ }
+ }
+
+ wmb();
+ instance->consumer = producer;
+
+ return IRQ_HANDLED;
+}
+
+static inline void
+megasas_sync_buffers(struct megasas_instance* instance, struct megasas_cmd*
cmd)
+{
+ dma_addr_t buf_h;
+ uint8_t opcode;
+
+ if (cmd->scmd->use_sg) {
+ pci_unmap_sg( instance->pdev, cmd->scmd->request_buffer,
+ cmd->scmd->use_sg, cmd->scmd->sc_data_direction );
+ return;
+ }
+
+ if (!cmd->scmd->request_bufflen)
+ return;
+
+ opcode = cmd->frame->hdr.cmd;
+
+ if ((opcode == MFI_CMD_LD_READ) || (opcode == MFI_CMD_LD_WRITE)) {
+ if (is_dma64)
+ buf_h = cmd->frame->io.sgl.sge64[0].phys_addr;
+ else
+ buf_h = cmd->frame->io.sgl.sge32[0].phys_addr;
+ }
+ else {
+ if (is_dma64)
+ buf_h = cmd->frame->pthru.sgl.sge64[0].phys_addr;
+ else
+ buf_h = cmd->frame->pthru.sgl.sge32[0].phys_addr;
+ }
+
+ pci_unmap_page( instance->pdev, buf_h, cmd->scmd->request_bufflen,
+ cmd->scmd->sc_data_direction
);
+ return;
+}
+
+/**
+ * megasas_complete_cmd
+ */
+static void
+megasas_complete_cmd(struct megasas_instance* instance, struct megasas_cmd*
cmd)
+{
+ struct megasas_header* hdr = &cmd->frame->hdr;
+
+ switch( hdr->cmd ) {
+
+ case MFI_CMD_LD_READ:
+ case MFI_CMD_LD_WRITE:
+ case MFI_CMD_LD_SCSI_IO:
+ case MFI_CMD_PD_SCSI_IO:
+
+ switch (hdr->cmd_status) {
+
+ case MFI_STAT_OK:
+ cmd->scmd->result = DID_OK << 16;
+ break;
+
+ case MFI_STAT_SCSI_DONE_WITH_ERROR:
+ cmd->scmd->result = hdr->scsi_status << 1 |
+ hdr->cmd_status << 8;
+
+ if (hdr->scsi_status == CHECK_CONDITION) {
+ memset( cmd->scmd->sense_buffer, 0,
+
SCSI_SENSE_BUFFERSIZE );
+ memcpy( cmd->scmd->sense_buffer, cmd->sense,
+ hdr->sense_len );
+ cmd->scmd->result |= DRIVER_SENSE << 24 |
+ DID_OK <<
16;
+ }
+ else
+ cmd->scmd->result |= DID_ERROR << 16;
+
+ break;
+
+ case MFI_STAT_DEVICE_NOT_FOUND:
+ cmd->scmd->result = DID_BAD_TARGET << 16;
+ break;
+
+ default:
+ printk( KERN_NOTICE "megasas: unhandled status
%#x\n",
+ hdr->cmd_status);
+ cmd->scmd->result = DID_ERROR << 16;
+ }
+
+ spin_lock( instance->host_lock );
+ cmd->scmd->scsi_done( cmd->scmd );
+ spin_unlock( instance->host_lock );
+
+ megasas_return_cmd( instance, cmd );
+
+ megasas_sync_buffers( instance, cmd );
+ break;
+
+ case MFI_CMD_DCMD:
+
+ /*
+ * See if got an event notification
+ */
+ if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
+ megasas_service_aen( instance, cmd );
+ else
+ megasas_complete_int_cmd( instance, cmd );
+
+ break;
+
+ case MFI_CMD_ABORT:
+ /*
+ * Cmd issued to abort another cmd returned
+ */
+ megasas_complete_abort( instance, cmd );
+ break;
+
+ default:
+ printk(KERN_ERR "megasas isr: unknown cmd 0x%x\n
completed!!\n",
hdr->cmd );
+ break;
+ }
+}
+
+/**
+ * megasas_complete_int_cmd
+ */
+static void
+megasas_complete_int_cmd(struct megasas_instance* instance,
+ struct megasas_cmd* cmd)
+{
+ cmd->cmd_status = cmd->frame->io.cmd_status;
+
+ if (cmd->cmd_status == ENODATA) {
+ cmd->cmd_status = 0;
+ }
+ wake_up( &instance->int_cmd_wait_q );
+}
+
+/**
+ * megasas_mgmt_open
+ */
+static int
+megasas_mgmt_open( struct inode* inode, struct file* filep )
+{
+ /*
+ * Allow only those users with admin rights
+ */
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ return 0;
+}
+
+/**
+ * megasas_mgmt_release
+ */
+static int
+megasas_mgmt_release( struct inode* inode, struct file* filep )
+{
+ return 0;
+}
+
+/**
+ * megasas_mgmt_fasync
+ */
+static int
+megasas_mgmt_fasync( int fd, struct file* filep, int mode )
+{
+ int rc;
+
+ down( &megasas_async_queue_mutex );
+
+ rc = fasync_helper( fd, filep, mode, &megasas_async_queue );
+
+ up( &megasas_async_queue_mutex );
+
+ if (rc >0)
+ return 0;
+
+ printk( KERN_WARNING "megasas: fasync_helper failed %d\n", rc );
+
+ return rc;
+}
+
+/**
+ * megasas_mgmt_ioctl
+ */
+static int
+megasas_mgmt_ioctl( struct inode* inode, struct file* filep,
+ unsigned int cmd, unsigned long arg )
+{
+ int i;
+ int j;
+ int rc;
+ uint8_t fw_status;
+ struct iocpacket uioc;
+ void __user* argp;
+ void __user* udata_addr;
+ uint8_t user_64bit_sgl = 0;
+ uint32_t opcode;
+ uint32_t locale;
+ uint32_t seq_num;
+ uint32_t* mbox_word;
+ struct megasas_cmd* old_cmd;
+
+ struct megasas_instance* instance;
+ struct megasas_dcmd_frame* kdcmd;
+ struct megasas_dcmd_frame __user* udcmd;
+ struct megasas_drv_ver dv;
+
+ argp = (void __user*) arg;
+
+ if (copy_from_user( &uioc, argp, sizeof(struct iocpacket))) {
+ printk( KERN_WARNING "megasas: copy_from_user failed\n" );
+ return -EINVAL;
+ }
+
+ if (strncmp(uioc.signature, IOC_SIGNATURE, strlen(IOC_SIGNATURE))
!=0){
+ printk( KERN_WARNING "megasas: invalid ioctl signature\n" );
+ return -EINVAL;
+ }
+
+ if (uioc.version != 0) {
+ printk( KERN_WARNING "megasas: invalid ioctl version %d\n",
+ uioc.version
);
+ return -EINVAL;
+ }
+
+ instance = NULL;
+ kdcmd = (struct megasas_dcmd_frame*) uioc.frame;
+ udcmd = (struct megasas_dcmd_frame*)
+ (((struct iocpacket*)argp)->frame);
+
+ /*
+ * Find out if user has used 32 or 64 bit SGL
+ */
+ if (kdcmd->flags & MFI_FRAME_SGL64 )
+ user_64bit_sgl = 1;
+
+ if (!user_64bit_sgl)
+ udata_addr = (void __user *) kdcmd->sgl.sge32[0].phys_addr;
+ else
+ udata_addr = (void __user *) (unsigned long)
+
kdcmd->sgl.sge64[0].phys_addr;
+
+ i = ((uioc.controller_id & 0xF0) >> 4) - 1;
+
+ if (i < megasas_mgmt_info.max_index)
+ instance = megasas_mgmt_info.instance[i];
+ else
+ instance = NULL;
+
+ if ((uioc.control_code == MR_DRIVER_IOCTL_LINUX) ||
+ (uioc.control_code == MR_DRIVER_IOCTL_COMMON)) {
+ /*
+ * If MR_DRIVER_IOCTL_LINUX or MR_DRIVER_IOCTL_COMMON
+ * look at dcmd->opcode for the actual operation
+ */
+ opcode = kdcmd->opcode;
+ }
+ else {
+ /* FW Command */
+ opcode = uioc.control_code;
+ }
+
+ switch (opcode) {
+
+ case MR_DRIVER_IOCTL_DRIVER_VERSION:
+
+ megasas_fill_drv_ver( &dv );
+
+ if (copy_to_user(udata_addr, &dv, sizeof(dv))) {
+ printk( KERN_WARNING "megasas: copy_to_user
failed\n" );
+ return -EFAULT;
+ }
+
+ rc = 0;
+ fw_status = MFI_STAT_OK;
+
+ if (copy_to_user( &udcmd->cmd_status, &fw_status,
+ sizeof(uint8_t))) {
+ rc = -EFAULT;
+ printk( KERN_WARNING "megasas: copy_to_user
failed\n" );
+ }
+
+ break;
+
+ case MR_LINUX_GET_ADAPTER_COUNT:
+
+ if (copy_to_user(udata_addr, &megasas_mgmt_info.count,
+ sizeof(uint16_t))) {
+ printk( KERN_WARNING "megasas: copy_to_user
failed\n" );
+ return -EFAULT;
+ }
+
+ rc = 0;
+ fw_status = MFI_STAT_OK;
+
+ if (copy_to_user( &udcmd->cmd_status, &fw_status,
+ sizeof(uint8_t))) {
+ rc = -EFAULT;
+ printk( KERN_WARNING "megasas: copy_to_user
failed\n" );
+ }
+
+ break;
+
+ case MR_LINUX_GET_ADAPTER_MAP:
+ /*
+ * README: encrypting logic for adapter map
+ * The adpater field size allows up to 16-bit adapter
number,
+ * which translates into 65536 possible adapters, which
+ * obviously is too much. So we reserve the lower 4-bits to
+ * put the coding nibble (0xF) and add 1 to the adapter
+ * number. Applications shall have (12-bits - 1) to provide
+ * the adapter number. This still translates in 4095
possible
+ * adapters, which should be sufficient :-)
+ */
+ memset(megasas_mgmt_info.map, 0,
+ sizeof(uint16_t) * MAX_MGMT_ADAPTERS);
+
+ j = 0;
+ for (i = 0; i < megasas_mgmt_info.max_index; i++) {
+ if (megasas_mgmt_info.instance[i]) {
+ megasas_mgmt_info.map[j++] =
+ ((i + 1) << 4) | 0xF;
+ }
+ }
+
+ if ((j) && (copy_to_user(udata_addr, megasas_mgmt_info.map,
+ sizeof(uint16_t) * j))) {
+
+ printk(KERN_ERR "megasas:invalid uaddr for hba
map\n" );
+ return -EFAULT;
+ }
+
+ fw_status = MFI_STAT_OK;
+ rc = 0;
+
+ if (copy_to_user( &udcmd->cmd_status, &fw_status,
+ sizeof(uint8_t))) {
+ rc = -EFAULT;
+ printk( KERN_ERR "megasas: invalid uaddr\n" );
+ }
+
+ break;
+
+ case MR_LINUX_GET_AEN:
+
+ if (!instance) {
+ printk( KERN_WARNING "megasas: invalid instance \n"
);
+ return -ENODEV;
+ }
+
+ mbox_word = (uint32_t*) kdcmd->mbox;
+ seq_num = mbox_word[0];
+ locale = mbox_word[1];
+ old_cmd = instance->aen_cmd;
+
+ if (old_cmd) {
+ old_cmd->abort_aen = 1;
+ rc = megasas_sync_abort_cmd(instance, old_cmd);
+
+ if (rc) {
+ printk(KERN_WARNING "megasas: failed to
abort \
+ prev aen\n"
);
+ break;
+ }
+ }
+
+ rc = megasas_register_aen( instance, seq_num, locale );
+
+ break;
+
+ case IOC_CMD_FIRMWARE:
+
+ if (!instance) {
+ printk( KERN_WARNING "megasas: invalid instance \n"
);
+ return -ENODEV;
+ }
+
+ rc = megasas_mgmt_fw_ioctl( instance, argp );
+
+ break;
+
+ default:
+ printk( KERN_WARNING "megasas: unsupported ioctl %d\n",
+ uioc.control_code );
+ return -ENOTTY;
+ }
+
+ return rc;
+}
+
+/**
+ * megasas_mgmt_fw_ioctl
+ */
+static int
+megasas_mgmt_fw_ioctl( struct megasas_instance* instance, void __user* argp
)
+{
+ struct iocpacket uioc;
+ struct megasas_header* hdr;
+ struct megasas_cmd* cmd;
+
+ if (copy_from_user(&uioc, argp, sizeof(struct iocpacket))) {
+ printk( KERN_ERR "megasas ioctl: copy_from_user failed\n" );
+ return -EFAULT;
+ }
+
+ cmd = megasas_get_cmd( instance );
+
+ if (!cmd) {
+ printk( KERN_WARNING "megasas: failed to get a cmd packet\n"
);
+ return -ENOMEM;
+ }
+
+ hdr = (struct megasas_header*) &uioc.frame;
+
+ switch( hdr->cmd ) {
+
+ case MFI_CMD_DCMD:
+ return megasas_mgmt_fw_dcmd(instance, &uioc, argp,
cmd);
+
+ case MFI_CMD_SMP:
+ return megasas_mgmt_fw_smp(instance, &uioc, argp,
cmd);
+
+ default:
+ printk( KERN_WARNING "megasas: invalid fw ioctl \n"
);
+ return -EINVAL;
+ }
+
+ megasas_return_cmd( instance, cmd );
+ return 0;
+}
+
+/**
+ * megasas_mgmt_fw_dcmd
+ */
+static int
+megasas_mgmt_fw_dcmd( struct megasas_instance* instance, struct iocpacket*
uioc,
+ void __user* argp, struct megasas_cmd* cmd )
+{
+ int rc = 0;
+ void __user* ubuff;
+ struct megasas_dcmd_frame* kdcmd;
+ struct megasas_dcmd_frame __user* udcmd;
+ struct megasas_dcmd_frame* cmd_dcmd;
+ caddr_t kbuff;
+ dma_addr_t kbuff_h;
+ uint32_t xferlen;
+ uint8_t user_64bit_sgl = 0;
+
+ cmd_dcmd = &cmd->frame->dcmd;
+ kdcmd = (struct megasas_dcmd_frame_t*) &uioc->frame;
+ udcmd = (struct megasas_dcmd_frame_t*)
+ (((struct iocpacket*)argp)->frame);
+
+ if (kdcmd->flags & MFI_FRAME_SGL64 )
+ user_64bit_sgl = 1;
+
+ if (!user_64bit_sgl) {
+ xferlen = kdcmd->sgl.sge32[0].length;
+ ubuff = (void __user*) udcmd->sgl.sge32[0].phys_addr;
+ }
+ else {
+ xferlen = kdcmd->sgl.sge64[0].length;
+ ubuff = (void __user*) (ulong)
udcmd->sgl.sge64[0].phys_addr;
+ }
+
+ /*
+ * Allocate internal buffer for data transfer
+ */
+ if (xferlen)
+ kbuff = pci_alloc_consistent(instance->pdev, xferlen,
&kbuff_h);
+ else
+ kbuff = NULL;
+
+ if (xferlen && !kbuff) {
+ printk( KERN_ERR "megasas: memalloc failed for int buff \n"
);
+ return -ENOMEM;
+ }
+
+ if (xferlen && (kdcmd->flags & MFI_FRAME_DIR_WRITE)) {
+
+ if (copy_from_user(kbuff, ubuff, xferlen)) {
+ printk( KERN_ERR "megasas: cp_from_usr failed\n" );
+ return -EFAULT;
+ }
+ }
+
+ cmd_dcmd->cmd = kdcmd->cmd;
+ cmd_dcmd->cmd_status = kdcmd->cmd_status;
+ cmd_dcmd->sge_count = kdcmd->sge_count;
+ cmd_dcmd->timeout = kdcmd->timeout;
+ cmd_dcmd->data_xfer_len = kdcmd->data_xfer_len;
+ cmd_dcmd->opcode = kdcmd->opcode;
+
+ memcpy( cmd_dcmd->mbox, kdcmd->mbox, 12 );
+
+ if (!user_64bit_sgl) {
+ cmd_dcmd->flags = kdcmd->flags;
+ cmd_dcmd->sgl.sge32[0].length =
kdcmd->sgl.sge32[0].length;
+ cmd_dcmd->sgl.sge32[0].phys_addr= kbuff_h;
+ }
+ else {
+ cmd_dcmd->flags = kdcmd->flags
|MFI_FRAME_SGL64;
+ cmd_dcmd->sgl.sge64[0].length =
kdcmd->sgl.sge64[0].length;
+ cmd_dcmd->sgl.sge64[0].phys_addr= kbuff_h;
+ }
+
+ if (!megasas_issue_blocked_cmd( instance, cmd )) {
+
+ if (xferlen && (kdcmd->flags & MFI_FRAME_DIR_READ)) {
+
+ if (copy_to_user( ubuff, kbuff, xferlen)) {
+
+ printk(KERN_ERR "megasas: cp_to_usr
failed\n");
+ rc = -EFAULT;
+ goto exit_label;
+ }
+ }
+
+ if (copy_to_user( &udcmd->cmd_status, &cmd_dcmd->cmd_status,
+ sizeof(uint8_t))) {
+ printk(KERN_ERR "megasas: cp_to_usr failed\n");
+ rc = -EFAULT;
+ goto exit_label;
+ }
+ }
+ else {
+ printk( KERN_WARNING "megasas: fw_ioctl failed\n" );
+ }
+
+exit_label:
+ pci_free_consistent( instance->pdev, xferlen, kbuff, kbuff_h );
+ return rc;
+}
+
+/**
+ * megasas_mgmt_fw_smp
+ */
+static int
+megasas_mgmt_fw_smp( struct megasas_instance* instance, struct iocpacket*
uioc,
+ void __user* argp, struct megasas_cmd* cmd )
+{
+ int rc = 0;
+ struct megasas_smp_frame* ksmp;
+ struct megasas_smp_frame __user* usmp;
+ struct megasas_smp_frame* cmd_smp;
+
+ caddr_t kreq;
+ caddr_t kresp;
+ dma_addr_t kreq_h;
+ dma_addr_t kresp_h;
+ void __user* ureq;
+ void __user* uresp;
+ uint32_t req_len;
+ uint32_t resp_len;
+
+ uint8_t user_64bit_sgl = 0;
+
+ cmd_smp = &cmd->frame->smp;
+ ksmp = (struct megasas_smp_frame*) &uioc->frame;
+ usmp = (struct megasas_smp_frame_t*)
+ (((struct iocpacket*)argp)->frame);
+
+ if (ksmp->flags & MFI_FRAME_SGL64 )
+ user_64bit_sgl = 1;
+
+ if (!user_64bit_sgl) {
+ req_len = ksmp->request_sgl.sge32[0].length;
+ resp_len = ksmp->response_sgl.sge32[0].length;
+
+ ureq = (void __user*)
usmp->request_sgl.sge32[0].phys_addr;
+ uresp = (void __user*)
usmp->response_sgl.sge32[0].phys_addr;
+ }
+ else {
+ req_len = ksmp->request_sgl.sge64[0].length;
+ resp_len = ksmp->response_sgl.sge64[0].length;
+
+ ureq = (void __user*) (ulong)
+
usmp->request_sgl.sge64[0].phys_addr;
+ uresp = (void __user*) (ulong)
+
usmp->response_sgl.sge64[0].phys_addr;
+ }
+
+ if (!req_len || !resp_len) {
+ printk( KERN_WARNING "megasas: invalid req/resp lenghth\n"
);
+ return -EINVAL;
+ }
+
+ /*
+ * Allocate kernel buffers for SMP request and response
+ */
+
+ kreq = NULL;
+ kresp = NULL;
+
+ if (!(kreq = pci_alloc_consistent(instance->pdev, req_len,
&kreq_h))){
+
+ printk( KERN_ERR "megasas: memalloc err for req\n" );
+ rc = -ENOMEM;
+ goto exit_label;
+ }
+
+ if(!(kresp = pci_alloc_consistent(instance->pdev, resp_len,
&kresp_h))){
+ printk( KERN_ERR "megasas: memalloc err for resp\n" );
+ rc = -ENOMEM;
+ goto exit_label;
+ }
+
+ if (copy_from_user(kreq, ureq, req_len)) {
+ printk( KERN_ERR "megasas: copy_from_user failed\n" );
+ rc = -EFAULT;
+ goto exit_label;
+ }
+
+ memcpy (cmd_smp, ksmp, MEGAMFI_FRAME_SIZE );
+ cmd_smp->context = cmd->index;
+
+ if (!user_64bit_sgl) {
+ cmd_smp->flags =
ksmp->flags;
+ cmd_smp->request_sgl.sge32[0].length = req_len;
+ cmd_smp->request_sgl.sge32[0].phys_addr = kreq_h;
+ cmd_smp->response_sgl.sge32[0].length = resp_len;
+ cmd_smp->response_sgl.sge32[0].phys_addr = kresp_h;
+ }
+ else {
+ cmd_smp->flags =
ksmp->flags |
+
MFI_FRAME_SGL64;
+ cmd_smp->request_sgl.sge64[0].length = req_len;
+ cmd_smp->request_sgl.sge64[0].phys_addr = kreq_h;
+ cmd_smp->response_sgl.sge64[0].length = resp_len;
+ cmd_smp->response_sgl.sge64[0].phys_addr = kresp_h;
+ }
+
+ if (!megasas_issue_blocked_cmd( instance, cmd )) {
+
+ if (copy_to_user( uresp, kresp, resp_len)) {
+ printk( KERN_ERR "megasas: copy_to_user failed\n" );
+ rc = -EFAULT;
+ goto exit_label;
+ }
+
+ if (copy_to_user( &usmp->cmd_status, &cmd_smp->cmd_status,
+ sizeof(uint8_t))) {
+ printk( KERN_ERR "megasas: copy_to_user failed\n" );
+ rc = -EFAULT;
+ goto exit_label;
+ }
+ }
+ else {
+ printk( KERN_WARNING "megasas: smp failed\n" );
+ }
+
+exit_label:
+
+ if (kreq)
+ pci_free_consistent(instance->pdev, req_len, kreq, kreq_h);
+ if (kresp)
+ pci_free_consistent(instance->pdev, resp_len, kresp,
kresp_h);
+
+ return rc;
+}
+
+/**
+ * megasas_sysfs_show_app_hndl
+ */
+static ssize_t
+megasas_sysfs_show_app_hndl( struct class_device* cdev, char* buf )
+{
+ int i;
+ uint32_t hndl = 0;
+ struct Scsi_Host* shost;
+ struct megasas_instance* instance;
+
+ shost = class_to_shost( cdev );
+ instance = (struct megasas_instance*)SCSIHOST2ADAP( shost );
+
+ for (i = 0; i < megasas_mgmt_info.max_index; i++ ) {
+
+ if (instance == megasas_mgmt_info.instance[i])
+ hndl = ((i + 1) << 4) | 0xF;
+ }
+
+ return snprintf( buf, 8, "%u\n", hndl );
+}
+
+/**
+ * megasas_fill_drv_ver
+ */
+static void
+megasas_fill_drv_ver( struct megasas_drv_ver* dv )
+{
+ memset( dv, 0, sizeof(struct megasas_drv_ver) );
+
+ memcpy(dv->signature, "$LSI LOGIC$", strlen("$LSI LOGIC$") );
+ memcpy(dv->os_name, "Linux", strlen("Linux") );
+ memcpy(dv->os_ver, "Ver Indpndt", strlen("ver indpndt") );
+ memcpy(dv->drv_name, "megaraid_sas", strlen("megaraid_sas") );
+ memcpy(dv->drv_ver, MEGASAS_VERSION,strlen(MEGASAS_VERSION) );
+ memcpy(dv->drv_rel_date,MEGASAS_RELDATE,strlen(MEGASAS_RELDATE) );
+}
+
+/**
+ * megasas_get_controller_info
+ */
+static int
+megasas_get_ctrl_info( struct megasas_instance* instance,
+ struct megasas_ctrl_info* ctrl_info )
+{
+ int i;
+ int ret = 0;
+ struct megasas_cmd* cmd;
+ struct megasas_dcmd_frame* dcmd;
+ struct megasas_ctrl_info* ci;
+ dma_addr_t ci_h;
+
+ cmd = megasas_get_cmd( instance );
+
+ if (!cmd) {
+ printk( KERN_WARNING "Failed to get a cmd for ctrl info\n"
);
+ return -ENOMEM;
+ }
+
+ dcmd = &cmd->frame->dcmd;
+
+ ci = pci_alloc_consistent( instance->pdev,
+ sizeof(struct megasas_ctrl_info), &ci_h );
+
+ if (!ci) {
+ printk( KERN_WARNING "Failed to alloc mem for ctrl info\n"
);
+ megasas_return_cmd( instance, cmd );
+ return -ENOMEM;
+ }
+
+ memset( ci, 0, sizeof(struct megasas_ctrl_info));
+ for( i = 0; i < 12; i++ ) dcmd->mbox[i] = 0;
+
+ dcmd->cmd = MFI_CMD_DCMD;
+ dcmd->cmd_status = 0xFF;
+ dcmd->sge_count = 1;
+ dcmd->flags = MFI_FRAME_DIR_READ;
+ dcmd->timeout = 0;
+ dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
+ dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
+ dcmd->sgl.sge32[0].phys_addr = ci_h;
+ dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
+
+ if (!megasas_issue_polled( instance, cmd )) {
+ ret = 0;
+ memcpy( ctrl_info, ci, sizeof(struct megasas_ctrl_info));
+ }
+ else {
+ printk( KERN_WARNING "Ctrl info failed\n" );
+ ret = -1;
+ }
+
+ pci_free_consistent( instance->pdev, sizeof(struct
megasas_ctrl_info),
+ ci, ci_h );
+
+ megasas_return_cmd( instance, cmd );
+ return ret;
+}
+
+module_init( megasas_init );
+module_exit( megasas_exit );
+
+/* vim: set ts=8 sw=8 tw=78 ai si: */
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