From: "Bagalkote, Sreenivas" <sreenib@lsil.com>
We are announcing a driver for LSI Logic's new SAS based MegaRAID
controllers.
Signed-off-by: Sreenivas Bagalkote <sreenivas.bagalkote@lsil.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---
25-akpm/Documentation/scsi/ChangeLog.megaraid_sas | 9
25-akpm/drivers/scsi/Kconfig | 1
25-akpm/drivers/scsi/Makefile | 1
25-akpm/drivers/scsi/megaraid/Kconfig.megaraid_sas | 9
25-akpm/drivers/scsi/megaraid/Makefile | 1
25-akpm/drivers/scsi/megaraid/megaraid_sas.c | 2746 +++++++++++++++++++++
25-akpm/drivers/scsi/megaraid/megaraid_sas.h | 1118 ++++++++
7 files changed, 3885 insertions(+)
diff -puN /dev/null Documentation/scsi/ChangeLog.megaraid_sas
--- /dev/null Thu Apr 11 07:25:15 2002
+++ 25-akpm/Documentation/scsi/ChangeLog.megaraid_sas Sun Mar 6 16:24:15 2005
@@ -0,0 +1,9 @@
+Release Date : Fri Mar 4 21:06:57 EST 2005
+Released by : Sreenivas Bagalkote (sreenivas.bagalkote@lsil.com)
+Current Version : 00.00.01.00
+Older Version : NA
+
+1. Initial announcement to community - Module for LSI Logic's SAS based
+ RAID controllers.
+
+
diff -puN drivers/scsi/Kconfig~megaraid_sas-announcing-new-module-for drivers/scsi/Kconfig
--- 25/drivers/scsi/Kconfig~megaraid_sas-announcing-new-module-for Sun Mar 6 16:24:15 2005
+++ 25-akpm/drivers/scsi/Kconfig Sun Mar 6 16:24:15 2005
@@ -404,6 +404,7 @@ config SCSI_IN2000
module will be called in2000.
source "drivers/scsi/megaraid/Kconfig.megaraid"
+source "drivers/scsi/megaraid/Kconfig.megaraid_sas"
config SCSI_SATA
bool "Serial ATA (SATA) support"
diff -puN drivers/scsi/Makefile~megaraid_sas-announcing-new-module-for drivers/scsi/Makefile
--- 25/drivers/scsi/Makefile~megaraid_sas-announcing-new-module-for Sun Mar 6 16:24:15 2005
+++ 25-akpm/drivers/scsi/Makefile Sun Mar 6 16:24:15 2005
@@ -97,6 +97,7 @@ obj-$(CONFIG_SCSI_DC395x) += dc395x.o
obj-$(CONFIG_SCSI_DC390T) += tmscsim.o
obj-$(CONFIG_MEGARAID_LEGACY) += megaraid.o
obj-$(CONFIG_MEGARAID_NEWGEN) += megaraid/
+obj-$(CONFIG_MEGARAID_SAS) += megaraid/
obj-$(CONFIG_SCSI_ACARD) += atp870u.o
obj-$(CONFIG_SCSI_SUNESP) += esp.o
obj-$(CONFIG_SCSI_GDTH) += gdth.o
diff -puN /dev/null drivers/scsi/megaraid/Kconfig.megaraid_sas
--- /dev/null Thu Apr 11 07:25:15 2002
+++ 25-akpm/drivers/scsi/megaraid/Kconfig.megaraid_sas Sun Mar 6 16:24:15 2005
@@ -0,0 +1,9 @@
+config MEGARAID_SAS
+ tristate "LSI Logic MegaRAID SAS RAID module (New Driver)"
+ depends on PCI && SCSI
+ help
+ Module for LSI Logic's SAS based RAID controllers.
+ To compile this driver as a module, choose 'm' here.
+ Module will be called megaraid_sas
+
+
diff -puN drivers/scsi/megaraid/Makefile~megaraid_sas-announcing-new-module-for drivers/scsi/megaraid/Makefile
--- 25/drivers/scsi/megaraid/Makefile~megaraid_sas-announcing-new-module-for Sun Mar 6 16:24:15 2005
+++ 25-akpm/drivers/scsi/megaraid/Makefile Sun Mar 6 16:24:15 2005
@@ -1,2 +1,3 @@
obj-$(CONFIG_MEGARAID_MM) += megaraid_mm.o
obj-$(CONFIG_MEGARAID_MAILBOX) += megaraid_mbox.o
+obj-$(CONFIG_MEGARAID_SAS) += megaraid_sas.o
diff -puN /dev/null drivers/scsi/megaraid/megaraid_sas.c
--- /dev/null Thu Apr 11 07:25:15 2002
+++ 25-akpm/drivers/scsi/megaraid/megaraid_sas.c Sun Mar 6 16:24:15 2005
@@ -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: */
diff -puN /dev/null drivers/scsi/megaraid/megaraid_sas.h
--- /dev/null Thu Apr 11 07:25:15 2002
+++ 25-akpm/drivers/scsi/megaraid/megaraid_sas.h Sun Mar 6 16:24:15 2005
@@ -0,0 +1,1118 @@
+/*
+ *
+ * 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.h
+ */
+
+#ifndef LSI_MEGARAID_SAS_H
+#define LSI_MEGARAID_SAS_H
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/list.h>
+#include <linux/version.h>
+#include <linux/moduleparam.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <asm/uaccess.h>
+
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_host.h>
+
+/**
+ * MegaRAID SAS Driver meta data
+ */
+#define MEGASAS_VERSION "00.00.01.00"
+#define MEGASAS_RELDATE "Mar 05, 2005"
+#define MEGASAS_EXT_VERSION ""
+
+/**
+ * MegaRAID SAS supported controllers
+ */
+#define PCI_DEVICE_LSI_1064 0x0411
+#define PCI_SUBVENDOR_x0000 0x0000
+#define PCI_SUBVENDOR_x1000 0x1000
+#define PCI_SUBSYSTEM_x0000 0x0000
+#define PCI_SUBSYSTEM_x0001 0x0001
+#define PCI_SUBSYSTEM_x0002 0x0002
+#define PCI_SUBSYSTEM_x1001 0x1001
+
+#define PCI_DEVICE_ID_PERC5 0x0015
+#define PCI_SUBSYSTEM_PERC5H 0x1F01
+#define PCI_SUBSYSTEM_PERC5L 0x1F02
+#define PCI_SUBSYSTEM_PERC5I 0x1F03
+
+#define PCI_SUB_DEVICEID_FSC 0x1081
+#define PCI_SUB_VENDORID_FSC 0x1734
+/*
+ * =====================================
+ * MegaRAID SAS MFI firmware definitions
+ * =====================================
+ */
+
+/**
+ * FW posts its state in upper 4 bits of outbound_msg_0 register
+ */
+#define MFI_STATE_MASK 0xF0000000
+#define MFI_STATE_UNDEFINED 0x00000000
+#define MFI_STATE_BB_INIT 0x10000000
+#define MFI_STATE_FW_INIT 0x40000000
+#define MFI_STATE_WAIT_HANDSHAKE 0x60000000
+#define MFI_STATE_DEVICE_SCAN 0x80000000
+#define MFI_STATE_READY 0xB0000000
+#define MFI_STATE_OPERATIONAL 0xC0000000
+#define MFI_STATE_FAULT 0xF0000000
+
+#define MEGAMFI_FRAME_SIZE 64
+
+/**
+ * During FW init, clear pending cmds & reset state using inbound_msg_0
+ *
+ * ABORT : Abort all pending cmds
+ * READY : Move from OPERATIONAL to READY state; discard queue info
+ * MFIMODE : Discard (possible) low MFA posted in 64-bit mode (??)
+ * CLR_HANDSHAKE: FW is waiting for HANDSHAKE from BIOS or Driver
+ */
+#define MFI_INIT_ABORT 0x00000000
+#define MFI_INIT_READY 0x00000002
+#define MFI_INIT_MFIMODE 0x00000004
+#define MFI_INIT_CLEAR_HANDSHAKE 0x00000008
+#define MFI_RESET_FLAGS MFI_INIT_READY|MFI_INIT_MFIMODE
+
+/**
+ * MFI frame flags
+ */
+#define MFI_FRAME_POST_IN_REPLY_QUEUE 0x0000
+#define MFI_FRAME_DONT_POST_IN_REPLY_QUEUE 0x0001
+#define MFI_FRAME_SGL32 0x0000
+#define MFI_FRAME_SGL64 0x0002
+#define MFI_FRAME_SENSE32 0x0000
+#define MFI_FRAME_SENSE64 0x0004
+#define MFI_FRAME_DIR_NONE 0x0000
+#define MFI_FRAME_DIR_WRITE 0x0008
+#define MFI_FRAME_DIR_READ 0x0010
+#define MFI_FRAME_DIR_BOTH 0x0018
+
+/**
+ * Definition for cmd_status
+ */
+#define MFI_CMD_STATUS_POLL_MODE 0xFF
+
+/**
+ * MFI command opcodes
+ */
+#define MFI_CMD_INIT 0x00
+#define MFI_CMD_LD_READ 0x01
+#define MFI_CMD_LD_WRITE 0x02
+#define MFI_CMD_LD_SCSI_IO 0x03
+#define MFI_CMD_PD_SCSI_IO 0x04
+#define MFI_CMD_DCMD 0x05
+#define MFI_CMD_ABORT 0x06
+#define MFI_CMD_SMP 0x07
+#define MFI_CMD_STP 0x08
+
+#define MR_DCMD_CTRL_GET_INFO 0x01010000
+
+#define MR_DCMD_CTRL_CACHE_FLUSH 0x01101000
+#define MR_FLUSH_CTRL_CACHE 0x01
+#define MR_FLUSH_DISK_CACHE 0x02
+
+#define MR_DCMD_CTRL_SHUTDOWN 0x01050000
+#define MR_ENABLE_DRIVE_SPINDOWN 0x01
+
+#define MR_DCMD_CTRL_EVENT_GET_INFO 0x01040100
+#define MR_DCMD_CTRL_EVENT_GET 0x01040300
+#define MR_DCMD_CTRL_EVENT_WAIT 0x01040500
+#define MR_DCMD_LD_GET_PROPERTIES 0x03030000
+
+/**
+ * MFI command completion codes
+ */
+enum MFI_STAT {
+ MFI_STAT_OK = 0x00,
+ MFI_STAT_INVALID_CMD = 0x01,
+ MFI_STAT_INVALID_DCMD = 0x02,
+ MFI_STAT_INVALID_PARAMETER = 0x03,
+ MFI_STAT_INVALID_SEQUENCE_NUMBER = 0x04,
+ MFI_STAT_ABORT_NOT_POSSIBLE = 0x05,
+ MFI_STAT_APP_HOST_CODE_NOT_FOUND = 0x06,
+ MFI_STAT_APP_IN_USE = 0x07,
+ MFI_STAT_APP_NOT_INITIALIZED = 0x08,
+ MFI_STAT_ARRAY_INDEX_INVALID = 0x09,
+ MFI_STAT_ARRAY_ROW_NOT_EMPTY = 0x0a,
+ MFI_STAT_CONFIG_RESOURCE_CONFLICT = 0x0b,
+ MFI_STAT_DEVICE_NOT_FOUND = 0x0c,
+ MFI_STAT_DRIVE_TOO_SMALL = 0x0d,
+ MFI_STAT_FLASH_ALLOC_FAIL = 0x0e,
+ MFI_STAT_FLASH_BUSY = 0x0f,
+ MFI_STAT_FLASH_ERROR = 0x10,
+ MFI_STAT_FLASH_IMAGE_BAD = 0x11,
+ MFI_STAT_FLASH_IMAGE_INCOMPLETE = 0x12,
+ MFI_STAT_FLASH_NOT_OPEN = 0x13,
+ MFI_STAT_FLASH_NOT_STARTED = 0x14,
+ MFI_STAT_FLUSH_FAILED = 0x15,
+ MFI_STAT_HOST_CODE_NOT_FOUNT = 0x16,
+ MFI_STAT_LD_CC_IN_PROGRESS = 0x17,
+ MFI_STAT_LD_INIT_IN_PROGRESS = 0x18,
+ MFI_STAT_LD_LBA_OUT_OF_RANGE = 0x19,
+ MFI_STAT_LD_MAX_CONFIGURED = 0x1a,
+ MFI_STAT_LD_NOT_OPTIMAL = 0x1b,
+ MFI_STAT_LD_RBLD_IN_PROGRESS = 0x1c,
+ MFI_STAT_LD_RECON_IN_PROGRESS = 0x1d,
+ MFI_STAT_LD_WRONG_RAID_LEVEL = 0x1e,
+ MFI_STAT_MAX_SPARES_EXCEEDED = 0x1f,
+ MFI_STAT_MEMORY_NOT_AVAILABLE = 0x20,
+ MFI_STAT_MFC_HW_ERROR = 0x21,
+ MFI_STAT_NO_HW_PRESENT = 0x22,
+ MFI_STAT_NOT_FOUND = 0x23,
+ MFI_STAT_NOT_IN_ENCL = 0x24,
+ MFI_STAT_PD_CLEAR_IN_PROGRESS = 0x25,
+ MFI_STAT_PD_TYPE_WRONG = 0x26,
+ MFI_STAT_PR_DISABLED = 0x27,
+ MFI_STAT_ROW_INDEX_INVALID = 0x28,
+ MFI_STAT_SAS_CONFIG_INVALID_ACTION = 0x29,
+ MFI_STAT_SAS_CONFIG_INVALID_DATA = 0x2a,
+ MFI_STAT_SAS_CONFIG_INVALID_PAGE = 0x2b,
+ MFI_STAT_SAS_CONFIG_INVALID_TYPE = 0x2c,
+ MFI_STAT_SCSI_DONE_WITH_ERROR = 0x2d,
+ MFI_STAT_SCSI_IO_FAILED = 0x2e,
+ MFI_STAT_SCSI_RESERVATION_CONFLICT = 0x2f,
+ MFI_STAT_SHUTDOWN_FAILED = 0x30,
+ MFI_STAT_TIME_NOT_SET = 0x31,
+ MFI_STAT_WRONG_STATE = 0x32,
+ MFI_STAT_INVALID_STATUS = 0xFF
+
+};
+
+enum MR_EVT_CLASS {
+
+ MR_EVT_CLASS_DEBUG = -2,
+ MR_EVT_CLASS_PROGRESS = -1,
+ MR_EVT_CLASS_INFO = 0,
+ MR_EVT_CLASS_WARNING = 1,
+ MR_EVT_CLASS_CRITICAL = 2,
+ MR_EVT_CLASS_FATAL = 3,
+ MR_EVT_CLASS_DEAD = 4,
+
+};
+
+enum MR_EVT_LOCALE{
+
+ MR_EVT_LOCALE_LD = 0x0001,
+ MR_EVT_LOCALE_PD = 0x0002,
+ MR_EVT_LOCALE_ENCL = 0x0004,
+ MR_EVT_LOCALE_BBU = 0x0008,
+ MR_EVT_LOCALE_SAS = 0x0010,
+ MR_EVT_LOCALE_CTRL = 0x0020,
+ MR_EVT_LOCALE_CONFIG = 0x0040,
+ MR_EVT_LOCALE_CLUSTER = 0x0080,
+ MR_EVT_LOCALE_ALL = 0xffff,
+
+};
+
+enum MR_EVT_ARGS {
+
+ MR_EVT_ARGS_NONE,
+ MR_EVT_ARGS_CDB_SENSE,
+ MR_EVT_ARGS_LD,
+ MR_EVT_ARGS_LD_COUNT,
+ MR_EVT_ARGS_LD_LBA,
+ MR_EVT_ARGS_LD_OWNER,
+ MR_EVT_ARGS_LD_LBA_PD_LBA,
+ MR_EVT_ARGS_LD_PROG,
+ MR_EVT_ARGS_LD_STATE,
+ MR_EVT_ARGS_LD_STRIP,
+ MR_EVT_ARGS_PD,
+ MR_EVT_ARGS_PD_ERR,
+ MR_EVT_ARGS_PD_LBA,
+ MR_EVT_ARGS_PD_LBA_LD,
+ MR_EVT_ARGS_PD_PROG,
+ MR_EVT_ARGS_PD_STATE,
+ MR_EVT_ARGS_PCI,
+ MR_EVT_ARGS_RATE,
+ MR_EVT_ARGS_STR,
+ MR_EVT_ARGS_TIME,
+ MR_EVT_ARGS_ECC,
+
+};
+
+/*
+ * SAS controller properties
+ */
+struct megasas_ctrl_prop {
+
+ uint16_t seq_num;
+ uint16_t pred_fail_poll_interval;
+ uint16_t intr_throttle_count;
+ uint16_t intr_throttle_timeouts;
+
+ uint8_t rebuild_rate;
+ uint8_t patrol_read_rate;
+ uint8_t bgi_rate;
+ uint8_t cc_rate;
+ uint8_t recon_rate;
+
+ uint8_t cache_flush_interval;
+
+ uint8_t spinup_drv_count;
+ uint8_t spinup_delay;
+
+ uint8_t cluster_enable;
+ uint8_t coercion_mode;
+ uint8_t disk_write_cache_disable;
+ uint8_t alarm_enable;
+
+ uint8_t reserved[44];
+
+} __attribute__ ((packed));
+
+/*
+ * SAS controller information
+ */
+struct megasas_ctrl_info {
+
+ /*
+ * PCI device information
+ */
+ struct {
+
+ uint16_t vendor_id;
+ uint16_t device_id;
+ uint16_t sub_vendor_id;
+ uint16_t sub_device_id;
+ uint8_t reserved[24];
+
+ } __attribute__ ((packed)) pci;
+
+ /*
+ * Host interface information
+ */
+ struct {
+
+ uint8_t PCIX : 1;
+ uint8_t PCIE : 1;
+ uint8_t iSCSI : 1;
+ uint8_t SAS_3G : 1;
+ uint8_t reserved_0 : 4;
+ uint8_t reserved_1[6];
+ uint8_t port_count;
+ uint64_t port_addr[8];
+
+ } __attribute__ ((packed)) host_interface;
+
+ /*
+ * Device (backend) interface information
+ */
+ struct {
+
+ uint8_t SPI : 1;
+ uint8_t SAS_3G : 1;
+ uint8_t SATA_1_5G : 1;
+ uint8_t SATA_3G : 1;
+ uint8_t reserved_0 : 4;
+ uint8_t reserved_1[6];
+ uint8_t port_count;
+ uint64_t port_addr[8];
+
+ } __attribute__ ((packed)) device_interface;
+
+ /*
+ * List of components residing in flash. All str are null terminated
+ */
+ uint32_t image_check_word;
+ uint32_t image_component_count;
+
+ struct {
+
+ char name[8];
+ char version[32];
+ char build_date[16];
+ char built_time[16];
+
+ } __attribute__ ((packed)) image_component[8];
+
+ /*
+ * List of flash components that have been flashed on the card, but
+ * are not in use, pending reset of the adapter. This list will be
+ * empty if a flash operation has not occurred. All stings are null
+ * terminated
+ */
+ uint32_t pending_image_component_count;
+
+ struct {
+
+ char name[8];
+ char version[32];
+ char build_date[16];
+ char build_time[16];
+
+ } __attribute__ ((packed)) pending_image_component[8];
+
+ uint8_t max_arms;
+ uint8_t max_spans;
+ uint8_t max_arrays;
+ uint8_t max_lds;
+
+ char product_name[80];
+ char serial_no[32];
+
+ /*
+ * Other physical/controller/operation information. Indicates the
+ * presence of the hardware
+ */
+ struct {
+
+ uint32_t bbu : 1;
+ uint32_t alarm : 1;
+ uint32_t nvram : 1;
+ uint32_t uart : 1;
+ uint32_t reserved : 28;
+
+ } __attribute__ ((packed)) hw_present;
+
+ uint32_t current_fw_time;
+
+ /*
+ * Maximum data transfer sizes
+ */
+ uint16_t max_concurrent_cmds;
+ uint16_t max_sge_count;
+ uint32_t max_request_size;
+
+ /*
+ * Logical and physical device counts
+ */
+ uint16_t ld_present_count;
+ uint16_t ld_degraded_count;
+ uint16_t ld_offline_count;
+
+ uint16_t pd_present_count;
+ uint16_t pd_disk_present_count;
+ uint16_t pd_disk_pred_failure_count;
+ uint16_t pd_disk_failed_count;
+
+ /*
+ * Memory size information
+ */
+ uint16_t nvram_size;
+ uint16_t memory_size;
+ uint16_t flash_size;
+
+ /*
+ * Error counters
+ */
+ uint16_t mem_correctable_error_count;
+ uint16_t mem_uncorrectable_error_count;
+
+ /*
+ * Cluster information
+ */
+ uint8_t cluster_permitted;
+ uint8_t cluster_active;
+ uint8_t reserved_1[2];
+
+ /*
+ * Controller capabilities structures
+ */
+ struct {
+
+ uint32_t raid_level_0 : 1;
+ uint32_t raid_level_1 : 1;
+ uint32_t raid_level_5 : 1;
+ uint32_t raid_level_1E : 1;
+ uint32_t reserved : 28;
+
+ } __attribute__ ((packed)) raid_levels;
+
+ struct {
+
+ uint32_t rbld_rate : 1;
+ uint32_t cc_rate : 1;
+ uint32_t bgi_rate : 1;
+ uint32_t recon_rate : 1;
+ uint32_t patrol_rate : 1;
+ uint32_t alarm_control : 1;
+ uint32_t cluster_supported : 1;
+ uint32_t bbu : 1;
+ uint32_t spanning_allowed : 1;
+ uint32_t dedicated_hotspares : 1;
+ uint32_t revertible_hotspares : 1;
+ uint32_t foreign_config_import : 1;
+ uint32_t self_diagnostic : 1;
+ uint32_t reserved : 19;
+
+ } __attribute__ ((packed)) adapter_operations;
+
+ struct {
+
+ uint32_t read_policy : 1;
+ uint32_t write_policy : 1;
+ uint32_t io_policy : 1;
+ uint32_t access_policy : 1;
+ uint32_t reserved : 28;
+
+ } __attribute__ ((packed)) ld_operations;
+
+ struct {
+
+ uint8_t min;
+ uint8_t max;
+ uint8_t reserved[2];
+
+ } __attribute__ ((packed)) stripe_size_operations;
+
+ struct {
+
+ uint32_t force_online : 1;
+ uint32_t force_offline : 1;
+ uint32_t force_rebuild : 1;
+ uint32_t reserved : 29;
+
+ } __attribute__ ((packed)) pd_operations;
+
+ struct {
+
+ uint32_t ctrl_supports_sas : 1;
+ uint32_t ctrl_supports_sata : 1;
+ uint32_t allow_mix_in_encl : 1;
+ uint32_t allow_mix_in_ld : 1;
+ uint32_t allow_sata_in_cluster : 1;
+ uint32_t reserved : 27;
+
+ } __attribute__ ((packed)) pd_mix_support;
+
+ /*
+ * Include the controller properties (changeable items)
+ */
+ uint8_t reserved_2[12];
+ struct megasas_ctrl_prop properties;
+
+ uint8_t pad[0x800 - 0x640];
+
+} __attribute__ ((packed));
+
+/*
+ * ===============================
+ * MegaRAID SAS driver definitions
+ * ===============================
+ */
+
+
+#define MEGADRV_MAX_NUM_CMD 1024
+
+#define MEGADRV_MAX_PD_CHANNELS 2
+#define MEGADRV_MAX_LD_CHANNELS 2
+#define MEGADRV_MAX_CHANNELS (MEGADRV_MAX_PD_CHANNELS + \
+ MEGADRV_MAX_LD_CHANNELS)
+#define MEGADRV_MAX_DEV_PER_CHANNEL 128
+#define MEGADRV_DEFAULT_INIT_ID -1
+#define MEGADRV_MAX_CMD_PER_LUN 1000
+#define MEGADRV_MAX_LUN 8
+#define MEGADRV_MAX_LD 64
+
+#define MEGADRV_RESET_WAIT_TIME 300
+#define MEGADRV_RESET_NOTICE_INTERVAL 5
+
+/*
+ * All MFI register set macros accept megasas_register_set*
+ */
+#define RD_OB_MSG_0(regs) readl((void*)(&(regs)->outbound_msg_0))
+#define WR_IN_MSG_0(v, regs) writel((v),(void*)(&(regs)->inbound_msg_0))
+#define WR_IN_DOORBELL(v, regs) writel((v),(void*)(&(regs)->inbound_doorbell))
+#define WR_IN_QPORT(v, regs) writel((v),(void*)(&(regs)->inbound_queue_port))
+
+#define RD_OB_INTR_STATUS(regs) readl((void*)(&(regs)->outbound_intr_status))
+#define WR_OB_INTR_STATUS(v, regs) writel((v),(&(regs)->outbound_intr_status))
+
+/*
+ * When FW is in MFI_STATE_READY or MFI_STATE_OPERATIONAL, the state data
+ * of Outbound Msg Reg 0 indicates max concurrent cmds supported, max SGEs
+ * supported per cmd and if 64-bit MFAs (M64) is enabled or disabled.
+ */
+#define MFI_MAX_SUPP_CMDS(regs) ((RD_OB_MSG_0(regs)) & 0x00FFFF)
+#define MFI_MAX_SUPP_SGES(regs) (((RD_OB_MSG_0(regs)) & 0x0FF0000) >> 0x10)
+#define MFI_M64_ENABLED(regs) ((RD_OB_MSG_0(regs)) & 0x1000000)
+
+#define MFI_OB_INTR_STATUS_MASK 0x00000002
+#define MFI_POLL_TIMEOUT_SECS 10
+
+#define MFI_ENABLE_INTR(regs) writel(1,(void*)(&(regs)->outbound_intr_mask))
+
+#define MFI_DISABLE_INTR(regs) \
+{ \
+ uint32_t disable = ~0x00000001; \
+ uint32_t mask = readl((void*)(&(regs)->outbound_intr_mask)); \
+ mask &= disable; \
+ writel(mask, (void*)(&(regs)->outbound_intr_mask)); \
+}
+
+
+struct megasas_register_set {
+
+ uint32_t reserved_0[4]; /*0000h*/
+
+ uint32_t inbound_msg_0; /*0010h*/
+ uint32_t inbound_msg_1; /*0014h*/
+ uint32_t outbound_msg_0; /*0018h*/
+ uint32_t outbound_msg_1; /*001Ch*/
+
+ uint32_t inbound_doorbell; /*0020h*/
+ uint32_t inbound_intr_status; /*0024h*/
+ uint32_t inbound_intr_mask; /*0028h*/
+
+ uint32_t outbound_doorbell; /*002Ch*/
+ uint32_t outbound_intr_status; /*0030h*/
+ uint32_t outbound_intr_mask; /*0034h*/
+
+ uint32_t reserved_1[2]; /*0038h*/
+
+ uint32_t inbound_queue_port; /*0040h*/
+ uint32_t outbound_queue_port; /*0044h*/
+
+ uint32_t reserved_2; /*004Ch*/
+
+ uint32_t index_registers[1004]; /*0050h*/
+
+} __attribute__ ((packed));
+
+struct megasas_sge32 {
+
+ uint32_t phys_addr;
+ uint32_t length;
+
+} __attribute__ ((packed));
+
+struct megasas_sge64 {
+
+ uint64_t phys_addr;
+ uint32_t length;
+
+} __attribute__ ((packed));
+
+union megasas_sgl {
+
+ struct megasas_sge32 sge32[1];
+ struct megasas_sge64 sge64[1];
+
+} __attribute__ ((packed));
+
+struct megasas_header {
+
+ uint8_t cmd; /*00h*/
+ uint8_t sense_len; /*01h*/
+ uint8_t cmd_status; /*02h*/
+ uint8_t scsi_status; /*03h*/
+
+ uint8_t target_id; /*04h*/
+ uint8_t lun; /*05h*/
+ uint8_t cdb_len; /*06h*/
+ uint8_t sge_count; /*07h*/
+
+ uint32_t context; /*08h*/
+ uint32_t pad_0; /*0Ch*/
+
+ uint16_t flags; /*10h*/
+ uint16_t timeout; /*12h*/
+ uint32_t data_xferlen; /*14h*/
+
+} __attribute__ ((packed));
+
+union megasas_sgl_frame {
+
+ struct megasas_sge32 sge32[8];
+ struct megasas_sge64 sge64[5];
+
+} __attribute__ ((packed));
+
+struct megasas_init_frame {
+
+ uint8_t cmd; /*00h*/
+ uint8_t reserved_0; /*01h*/
+ uint8_t cmd_status; /*02h*/
+
+ uint8_t reserved_1; /*03h*/
+ uint32_t reserved_2; /*04h*/
+
+ uint32_t context; /*08h*/
+ uint32_t pad_0; /*0Ch*/
+
+ uint16_t flags; /*10h*/
+ uint16_t reserved_3; /*12h*/
+ uint32_t data_xfer_len; /*14h*/
+
+ uint32_t queue_info_new_phys_addr_lo; /*18h*/
+ uint32_t queue_info_new_phys_addr_hi; /*1Ch*/
+ uint32_t queue_info_old_phys_addr_lo; /*20h*/
+ uint32_t queue_info_old_phys_addr_hi; /*24h*/
+
+ uint32_t reserved_4[6]; /*28h*/
+
+} __attribute__ ((packed));
+
+struct megasas_init_queue_info {
+
+ uint32_t init_flags; /*00h*/
+ uint32_t reply_queue_entries; /*04h*/
+
+ uint32_t reply_queue_start_phys_addr_lo; /*08h*/
+ uint32_t reply_queue_start_phys_addr_hi; /*0Ch*/
+ uint32_t producer_index_phys_addr_lo; /*10h*/
+ uint32_t producer_index_phys_addr_hi; /*14h*/
+ uint32_t consumer_index_phys_addr_lo; /*18h*/
+ uint32_t consumer_index_phys_addr_hi; /*1Ch*/
+
+} __attribute__ ((packed));
+
+struct megasas_io_frame {
+
+ uint8_t cmd; /*00h*/
+ uint8_t sense_len; /*01h*/
+ uint8_t cmd_status; /*02h*/
+ uint8_t scsi_status; /*03h*/
+
+ uint8_t target_id; /*04h*/
+ uint8_t access_byte; /*05h*/
+ uint8_t reserved_0; /*06h*/
+ uint8_t sge_count; /*07h*/
+
+ uint32_t context; /*08h*/
+ uint32_t pad_0; /*0Ch*/
+
+ uint16_t flags; /*10h*/
+ uint16_t timeout; /*12h*/
+ uint32_t lba_count; /*14h*/
+
+ uint32_t sense_buf_phys_addr_lo; /*18h*/
+ uint32_t sense_buf_phys_addr_hi; /*1Ch*/
+
+ unsigned long start_lba_lo; /*20h*/
+ unsigned long start_lba_hi; /*24h*/
+
+ union megasas_sgl sgl; /*28h*/
+
+} __attribute__ ((packed));
+
+struct megasas_pthru_frame {
+
+ uint8_t cmd; /*00h*/
+ uint8_t sense_len; /*01h*/
+ uint8_t cmd_status; /*02h*/
+ uint8_t scsi_status; /*03h*/
+
+ uint8_t target_id; /*04h*/
+ uint8_t lun; /*05h*/
+ uint8_t cdb_len; /*06h*/
+ uint8_t sge_count; /*07h*/
+
+ uint32_t context; /*08h*/
+ uint32_t pad_0; /*0Ch*/
+
+ uint16_t flags; /*10h*/
+ uint16_t timeout; /*12h*/
+ uint32_t data_xfer_len; /*14h*/
+
+ uint32_t sense_buf_phys_addr_lo; /*18h*/
+ uint32_t sense_buf_phys_addr_hi; /*1Ch*/
+
+ uint8_t cdb[16]; /*20h*/
+ union megasas_sgl sgl; /*30h*/
+
+} __attribute__ ((packed));
+
+struct megasas_dcmd_frame {
+
+ uint8_t cmd; /*00h*/
+ uint8_t reserved_0; /*01h*/
+ uint8_t cmd_status; /*02h*/
+ uint8_t reserved_1[4]; /*03h*/
+ uint8_t sge_count; /*07h*/
+
+ uint32_t context; /*08h*/
+ uint32_t pad_0; /*0Ch*/
+
+ uint16_t flags; /*10h*/
+ uint16_t timeout; /*12h*/
+
+ uint32_t data_xfer_len; /*14h*/
+ uint32_t opcode; /*18h*/
+
+ uint8_t mbox[12]; /*1Ch*/
+
+ union megasas_sgl sgl; /*28h*/
+
+} __attribute__ ((packed));
+
+struct megasas_abort_frame {
+
+ uint8_t cmd; /*00h*/
+ uint8_t reserved_0; /*01h*/
+ uint8_t cmd_status; /*02h*/
+
+ uint8_t reserved_1; /*03h*/
+ uint32_t reserved_2; /*04h*/
+
+ uint32_t context; /*08h*/
+ uint32_t pad_0; /*0Ch*/
+
+ uint16_t flags; /*10h*/
+ uint16_t reserved_3; /*12h*/
+ uint32_t reserved_4; /*14h*/
+
+ uint32_t abort_context; /*18h*/
+ uint32_t pad_1; /*1Ch*/
+
+ uint32_t abort_mfi_phys_addr_lo; /*20h*/
+ uint32_t abort_mfi_phys_addr_hi; /*24h*/
+
+ uint32_t reserved_5[6]; /*28h*/
+
+} __attribute__ ((packed));
+
+struct megasas_smp_frame {
+
+ uint8_t cmd; /*00h*/
+ uint8_t reserved_1; /*01h*/
+ uint8_t cmd_status; /*02h*/
+ uint8_t connection_status; /*03h*/
+
+ uint8_t reserved_2[3]; /*04h*/
+ uint8_t sge_count; /*07h*/
+
+ uint32_t context; /*08h*/
+ uint32_t pad_0; /*0Ch*/
+
+ uint16_t flags; /*10h*/
+ uint16_t timeout; /*12h*/
+
+ uint32_t data_xfer_len; /*14h*/
+
+ uint8_t phy_id; /*18h*/
+ uint8_t port_id; /*19h*/
+ uint8_t connection_rate; /*1Ah*/
+ uint8_t reserved_3; /*1Bh*/
+
+ uint32_t reserved_4; /*1Ch*/
+
+ uint64_t sas_addr; /*20h*/
+
+ union megasas_sgl request_sgl; /*28h*/
+ union megasas_sgl response_sgl;
+
+} __attribute__ ((packed));
+
+union megasas_frame {
+
+ struct megasas_header hdr;
+ struct megasas_init_frame init;
+ struct megasas_io_frame io;
+ struct megasas_pthru_frame pthru;
+ struct megasas_dcmd_frame dcmd;
+ struct megasas_abort_frame abort;
+ struct megasas_smp_frame smp;
+
+ uint8_t raw_bytes[64];
+
+};
+
+struct megasas_cmd;
+
+union megasas_evt_class_locale {
+
+ struct {
+ uint16_t locale;
+ uint8_t reserved;
+ int8_t class;
+ } __attribute__ ((packed)) members;
+
+ uint32_t word;
+
+} __attribute__ ((packed));
+
+struct megasas_evt_log_info {
+ uint32_t newest_seq_num;
+ uint32_t oldest_seq_num;
+ uint32_t clear_seq_num;
+ uint32_t shutdown_seq_num;
+ uint32_t boot_seq_num;
+
+} __attribute__ ((packed));
+
+struct megasas_progress {
+
+ uint16_t progress;
+ uint16_t elapsed_seconds;
+
+} __attribute__ ((packed));
+
+struct megasas_evtarg_ld {
+
+ uint16_t target_id;
+ uint8_t ld_index;
+ uint8_t reserved;
+
+} __attribute__ ((packed));
+
+struct megasas_evtarg_pd {
+ uint16_t device_id;
+ uint8_t encl_index;
+ uint8_t slot_number;
+
+} __attribute__ ((packed));
+
+struct megasas_evt_detail {
+
+ uint32_t seq_num;
+ uint32_t time_stamp;
+ uint32_t code;
+ union megasas_evt_class_locale cl;
+ uint8_t arg_type;
+ uint8_t reserved1[15];
+
+ union {
+ struct {
+ struct megasas_evtarg_pd pd;
+ uint8_t cdb_length;
+ uint8_t sense_length;
+ uint8_t reserved[2];
+ uint8_t cdb[16];
+ uint8_t sense[64];
+ } __attribute__ ((packed)) cdbSense;
+
+ struct megasas_evtarg_ld ld;
+
+ struct {
+ struct megasas_evtarg_ld ld;
+ uint64_t count;
+ } __attribute__ ((packed)) ld_count;
+
+ struct {
+ uint64_t lba;
+ struct megasas_evtarg_ld ld;
+ } __attribute__ ((packed)) ld_lba;
+
+ struct {
+ struct megasas_evtarg_ld ld;
+ uint32_t prevOwner;
+ uint32_t newOwner;
+ } __attribute__ ((packed)) ld_owner;
+
+ struct {
+ uint64_t ld_lba;
+ uint64_t pd_lba;
+ struct megasas_evtarg_ld ld;
+ struct megasas_evtarg_pd pd;
+ } __attribute__ ((packed)) ld_lba_pd_lba;
+
+ struct {
+ struct megasas_evtarg_ld ld;
+ struct megasas_progress prog;
+ } __attribute__ ((packed)) ld_prog;
+
+ struct {
+ struct megasas_evtarg_ld ld;
+ uint32_t prev_state;
+ uint32_t new_state;
+ } __attribute__ ((packed)) ld_state;
+
+ struct {
+ uint64_t strip;
+ struct megasas_evtarg_ld ld;
+ } __attribute__ ((packed)) ld_strip;
+
+ struct megasas_evtarg_pd pd;
+
+ struct {
+ struct megasas_evtarg_pd pd;
+ uint32_t err;
+ } __attribute__ ((packed)) pd_err;
+
+ struct {
+ uint64_t lba;
+ struct megasas_evtarg_pd pd;
+ } __attribute__ ((packed)) pd_lba;
+
+ struct {
+ uint64_t lba;
+ struct megasas_evtarg_pd pd;
+ struct megasas_evtarg_ld ld;
+ } __attribute__ ((packed)) pd_lba_ld;
+
+ struct {
+ struct megasas_evtarg_pd pd;
+ struct megasas_progress prog;
+ } __attribute__ ((packed)) pd_prog;
+
+ struct {
+ struct megasas_evtarg_pd pd;
+ uint32_t prevState;
+ uint32_t newState;
+ } __attribute__ ((packed)) pd_state;
+
+ struct {
+ uint16_t vendorId;
+ uint16_t deviceId;
+ uint16_t subVendorId;
+ uint16_t subDeviceId;
+ } __attribute__ ((packed)) pci;
+
+ uint32_t rate;
+ char str[96];
+
+ struct {
+ uint32_t rtc;
+ uint32_t elapsedSeconds;
+ } __attribute__ ((packed)) time;
+
+ struct {
+ uint32_t ecar;
+ uint32_t elog;
+ char str[64];
+ } __attribute__ ((packed)) ecc;
+
+ uint8_t b[96];
+ uint16_t s[48];
+ uint32_t w[24];
+ uint64_t d[12];
+ } args;
+
+ char description[128];
+
+} __attribute__ ((packed));
+
+struct megasas_instance {
+
+ uint32_t producer;
+ uint32_t consumer;
+
+ uint32_t* reply_queue;
+ dma_addr_t reply_queue_phys_addr;
+
+ dma_addr_t phys_addr;
+
+ unsigned long base_addr;
+ struct megasas_register_set __iomem* reg_set;
+
+ int8_t init_id;
+ uint8_t reserved[3];
+
+ uint16_t max_num_sge;
+ uint16_t max_fw_cmds;
+ uint32_t max_sectors_per_req;
+
+ struct megasas_cmd* cmd_list;
+ struct list_head cmd_pool;
+ spinlock_t cmd_pool_lock;
+ struct dma_pool* frame_dma_pool;
+ struct dma_pool* sense_dma_pool;
+
+ struct megasas_evt_detail evt_detail;
+ struct megasas_cmd* aen_cmd;
+
+ struct Scsi_Host* host;
+ spinlock_t lock;
+ spinlock_t* host_lock;
+
+ wait_queue_head_t int_cmd_wait_q;
+ wait_queue_head_t abort_cmd_wait_q;
+
+ struct pci_dev* pdev;
+ uint32_t unique_id;
+};
+
+/*
+ * Various conversion macros from SCSI command
+ */
+#define SCP2HOST(scp) (scp)->device->host // to host
+#define SCP2HOSTDATA(scp) SCP2HOST(scp)->hostdata // to soft state
+#define SCP2CHANNEL(scp) (scp)->device->channel // to channel
+#define SCP2TARGET(scp) (scp)->device->id // to target
+#define SCP2LUN(scp) (scp)->device->lun // to LUN
+
+#define SCSIHOST2ADAP(host) (((caddr_t *)(host->hostdata))[0])
+#define SCP2ADAPTER(scp) (struct megasas_instance*)SCSIHOST2ADAP(SCP2HOST(scp))
+
+#define MEGADRV_IS_LOGICAL(scp) \
+ (SCP2CHANNEL(scp) < MEGADRV_MAX_PD_CHANNELS) ? 0 : 1
+
+#define MEGADRV_DEV_INDEX(inst, scp) \
+ ((SCP2CHANNEL(scp) % 2) * MEGADRV_MAX_DEV_PER_CHANNEL) + SCP2TARGET(scp)
+
+struct megasas_cmd {
+
+ union megasas_frame* frame;
+ dma_addr_t frame_phys_addr;
+ uint8_t* sense;
+ dma_addr_t sense_phys_addr;
+
+ uint32_t index;
+ uint8_t sync_cmd;
+ uint8_t cmd_status;
+ uint16_t abort_aen;
+
+ struct list_head list;
+ struct scsi_cmnd* scmd;
+ uint32_t frame_count;
+};
+
+#define MAX_MGMT_ADAPTERS 1024
+#define IOC_SIGNATURE "LSILOGIC"
+
+#define IOC_CMD_FIRMWARE 0x0
+#define MR_DRIVER_IOCTL_COMMON 0xF0010000
+#define MR_DRIVER_IOCTL_DRIVER_VERSION 0xF0010100
+#define MR_DRIVER_IOCTL_PCI_INFORMATION 0xF0010200
+#define MR_DRIVER_IOCTL_MEGARAID_STATISTICS 0xF0010300
+
+#define MR_DRIVER_IOCTL_LINUX 0xF0040000
+#define MR_LINUX_GET_ADAPTER_COUNT (MR_DRIVER_IOCTL_LINUX | 0x0100)
+#define MR_LINUX_GET_ADAPTER_MAP (MR_DRIVER_IOCTL_LINUX | 0x0200)
+#define MR_LINUX_GET_AEN (MR_DRIVER_IOCTL_LINUX | 0x0300)
+
+#define MR_MAX_SENSE_LENGTH 32
+
+struct iocpacket {
+
+ uint16_t version;
+ uint16_t controller_id;
+ uint8_t signature[8];
+ uint32_t reserved_1;
+ uint32_t control_code;
+ uint32_t reserved_2[2];
+ uint8_t frame[64];
+ union megasas_sgl_frame sgl_frame;
+ uint8_t sense_buff[MR_MAX_SENSE_LENGTH];
+ uint8_t data[1];
+
+} __attribute__ ((packed));
+
+struct megasas_mgmt_info {
+
+ uint16_t count;
+ struct megasas_instance* instance[MAX_MGMT_ADAPTERS];
+ uint16_t map[MAX_MGMT_ADAPTERS];
+ int max_index;
+};
+
+struct megasas_drv_ver {
+ uint8_t signature[12];
+ uint8_t os_name[16];
+ uint8_t os_ver[12];
+ uint8_t drv_name[20];
+ uint8_t drv_ver[32];
+ uint8_t drv_rel_date[20];
+
+} __attribute__ ((packed));
+
+#endif /*LSI_MEGARAID_SAS_H*/
_