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linux/drivers/scsi/megaraid/megaraid_mbox.h
Ju, Seokmann fbf6080225 [SCSI] megaraid_{mm,mbox}: 64-bit DMA capability checker 
This patch contains
- a fix for 64-bit DMA capability check in megaraid_{mm,mbox} driver.
- includes changes (going back to 32-bit DMA mask if 64-bit DMA mask
failes) suggested by James with previous patch.
- addition of SATA 150-4/6 as commented by Vasily Averin.

With patch, the driver access PCIconfiguration space with dedicated
offset to read a signature. If the signature read, it means that the
controller has capability to handle 64-bit DMA.
Without this patch, the driver used to blindly claim 64-bit DMA
capability.
The issue has been reported by Vasily Averin [vvs@sw.ru].
Thank you Vasily for the reporting.

Signed-Off By: Seokmann Ju <seokmann.ju@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-07-28 13:10:23 -05:00

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/*
*
* Linux MegaRAID device driver
*
* Copyright (c) 2003-2004 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_mbox.h
*/
#ifndef _MEGARAID_H_
#define _MEGARAID_H_
#include "mega_common.h"
#include "mbox_defs.h"
#include "megaraid_ioctl.h"
#define MEGARAID_VERSION "2.20.4.9"
#define MEGARAID_EXT_VERSION "(Release Date: Sun Jul 16 12:27:22 EST 2006)"
/*
* Define some PCI values here until they are put in the kernel
*/
#define PCI_DEVICE_ID_PERC4_DI_DISCOVERY 0x000E
#define PCI_SUBSYS_ID_PERC4_DI_DISCOVERY 0x0123
#define PCI_DEVICE_ID_PERC4_SC 0x1960
#define PCI_SUBSYS_ID_PERC4_SC 0x0520
#define PCI_DEVICE_ID_PERC4_DC 0x1960
#define PCI_SUBSYS_ID_PERC4_DC 0x0518
#define PCI_DEVICE_ID_VERDE 0x0407
#define PCI_DEVICE_ID_PERC4_DI_EVERGLADES 0x000F
#define PCI_SUBSYS_ID_PERC4_DI_EVERGLADES 0x014A
#define PCI_DEVICE_ID_PERC4E_SI_BIGBEND 0x0013
#define PCI_SUBSYS_ID_PERC4E_SI_BIGBEND 0x016c
#define PCI_DEVICE_ID_PERC4E_DI_KOBUK 0x0013
#define PCI_SUBSYS_ID_PERC4E_DI_KOBUK 0x016d
#define PCI_DEVICE_ID_PERC4E_DI_CORVETTE 0x0013
#define PCI_SUBSYS_ID_PERC4E_DI_CORVETTE 0x016e
#define PCI_DEVICE_ID_PERC4E_DI_EXPEDITION 0x0013
#define PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION 0x016f
#define PCI_DEVICE_ID_PERC4E_DI_GUADALUPE 0x0013
#define PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE 0x0170
#define PCI_DEVICE_ID_DOBSON 0x0408
#define PCI_DEVICE_ID_MEGARAID_SCSI_320_0 0x1960
#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_0 0xA520
#define PCI_DEVICE_ID_MEGARAID_SCSI_320_1 0x1960
#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_1 0x0520
#define PCI_DEVICE_ID_MEGARAID_SCSI_320_2 0x1960
#define PCI_SUBSYS_ID_MEGARAID_SCSI_320_2 0x0518
#define PCI_DEVICE_ID_MEGARAID_I4_133_RAID 0x1960
#define PCI_SUBSYS_ID_MEGARAID_I4_133_RAID 0x0522
#define PCI_DEVICE_ID_MEGARAID_SATA_150_4 0x1960
#define PCI_SUBSYS_ID_MEGARAID_SATA_150_4 0x4523
#define PCI_DEVICE_ID_MEGARAID_SATA_150_6 0x1960
#define PCI_SUBSYS_ID_MEGARAID_SATA_150_6 0x0523
#define PCI_DEVICE_ID_LINDSAY 0x0409
#define PCI_DEVICE_ID_INTEL_RAID_SRCS16 0x1960
#define PCI_SUBSYS_ID_INTEL_RAID_SRCS16 0x0523
#define PCI_DEVICE_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK 0x1960
#define PCI_SUBSYS_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK 0x0520
#define PCI_SUBSYS_ID_PERC3_QC 0x0471
#define PCI_SUBSYS_ID_PERC3_DC 0x0493
#define PCI_SUBSYS_ID_PERC3_SC 0x0475
#define MBOX_MAX_SCSI_CMDS 128 // number of cmds reserved for kernel
#define MBOX_MAX_USER_CMDS 32 // number of cmds for applications
#define MBOX_DEF_CMD_PER_LUN 64 // default commands per lun
#define MBOX_DEFAULT_SG_SIZE 26 // default sg size supported by all fw
#define MBOX_MAX_SG_SIZE 32 // maximum scatter-gather list size
#define MBOX_MAX_SECTORS 128 // maximum sectors per IO
#define MBOX_TIMEOUT 30 // timeout value for internal cmds
#define MBOX_BUSY_WAIT 10 // max usec to wait for busy mailbox
#define MBOX_RESET_WAIT 180 // wait these many seconds in reset
#define MBOX_RESET_EXT_WAIT 120 // extended wait reset
#define MBOX_SYNC_WAIT_CNT 0xFFFF // wait loop index for synchronous mode
#define MBOX_SYNC_DELAY_200 200 // 200 micro-seconds
/*
* maximum transfer that can happen through the firmware commands issued
* internnaly from the driver.
*/
#define MBOX_IBUF_SIZE 4096
/**
* mbox_ccb_t - command control block specific to mailbox based controllers
* @raw_mbox : raw mailbox pointer
* @mbox : mailbox
* @mbox64 : extended mailbox
* @mbox_dma_h : maibox dma address
* @sgl64 : 64-bit scatter-gather list
* @sgl32 : 32-bit scatter-gather list
* @sgl_dma_h : dma handle for the scatter-gather list
* @pthru : passthru structure
* @pthru_dma_h : dma handle for the passthru structure
* @epthru : extended passthru structure
* @epthru_dma_h : dma handle for extended passthru structure
* @buf_dma_h : dma handle for buffers w/o sg list
*
* command control block specific to the mailbox based controllers
*/
typedef struct {
uint8_t *raw_mbox;
mbox_t *mbox;
mbox64_t *mbox64;
dma_addr_t mbox_dma_h;
mbox_sgl64 *sgl64;
mbox_sgl32 *sgl32;
dma_addr_t sgl_dma_h;
mraid_passthru_t *pthru;
dma_addr_t pthru_dma_h;
mraid_epassthru_t *epthru;
dma_addr_t epthru_dma_h;
dma_addr_t buf_dma_h;
} mbox_ccb_t;
/**
* mraid_device_t - adapter soft state structure for mailbox controllers
* @param una_mbox64 : 64-bit mbox - unaligned
* @param una_mbox64_dma : mbox dma addr - unaligned
* @param mbox : 32-bit mbox - aligned
* @param mbox64 : 64-bit mbox - aligned
* @param mbox_dma : mbox dma addr - aligned
* @param mailbox_lock : exclusion lock for the mailbox
* @param baseport : base port of hba memory
* @param baseaddr : mapped addr of hba memory
* @param mbox_pool : pool of mailboxes
* @param mbox_pool_handle : handle for the mailbox pool memory
* @param epthru_pool : a pool for extended passthru commands
* @param epthru_pool_handle : handle to the pool above
* @param sg_pool : pool of scatter-gather lists for this driver
* @param sg_pool_handle : handle to the pool above
* @param ccb_list : list of our command control blocks
* @param uccb_list : list of cmd control blocks for mgmt module
* @param umbox64 : array of mailbox for user commands (cmm)
* @param pdrv_state : array for state of each physical drive.
* @param last_disp : flag used to show device scanning
* @param hw_error : set if FW not responding
* @param fast_load : If set, skip physical device scanning
* @channel_class : channel class, RAID or SCSI
* @sysfs_sem : semaphore to serialize access to sysfs res.
* @sysfs_uioc : management packet to issue FW calls from sysfs
* @sysfs_mbox64 : mailbox packet to issue FW calls from sysfs
* @sysfs_buffer : data buffer for FW commands issued from sysfs
* @sysfs_buffer_dma : DMA buffer for FW commands issued from sysfs
* @sysfs_wait_q : wait queue for sysfs operations
* @random_del_supported : set if the random deletion is supported
* @curr_ldmap : current LDID map
*
* Initialization structure for mailbox controllers: memory based and IO based
* All the fields in this structure are LLD specific and may be discovered at
* init() or start() time.
*
* NOTE: The fields of this structures are placed to minimize cache misses
*/
#define MAX_LD_EXTENDED64 64
typedef struct {
mbox64_t *una_mbox64;
dma_addr_t una_mbox64_dma;
mbox_t *mbox;
mbox64_t *mbox64;
dma_addr_t mbox_dma;
spinlock_t mailbox_lock;
unsigned long baseport;
void __iomem * baseaddr;
struct mraid_pci_blk mbox_pool[MBOX_MAX_SCSI_CMDS];
struct dma_pool *mbox_pool_handle;
struct mraid_pci_blk epthru_pool[MBOX_MAX_SCSI_CMDS];
struct dma_pool *epthru_pool_handle;
struct mraid_pci_blk sg_pool[MBOX_MAX_SCSI_CMDS];
struct dma_pool *sg_pool_handle;
mbox_ccb_t ccb_list[MBOX_MAX_SCSI_CMDS];
mbox_ccb_t uccb_list[MBOX_MAX_USER_CMDS];
mbox64_t umbox64[MBOX_MAX_USER_CMDS];
uint8_t pdrv_state[MBOX_MAX_PHYSICAL_DRIVES];
uint32_t last_disp;
int hw_error;
int fast_load;
uint8_t channel_class;
struct semaphore sysfs_sem;
uioc_t *sysfs_uioc;
mbox64_t *sysfs_mbox64;
caddr_t sysfs_buffer;
dma_addr_t sysfs_buffer_dma;
wait_queue_head_t sysfs_wait_q;
int random_del_supported;
uint16_t curr_ldmap[MAX_LD_EXTENDED64];
} mraid_device_t;
// route to raid device from adapter
#define ADAP2RAIDDEV(adp) ((mraid_device_t *)((adp)->raid_device))
#define MAILBOX_LOCK(rdev) (&(rdev)->mailbox_lock)
// Find out if this channel is a RAID or SCSI
#define IS_RAID_CH(rdev, ch) (((rdev)->channel_class >> (ch)) & 0x01)
#define RDINDOOR(rdev) readl((rdev)->baseaddr + 0x20)
#define RDOUTDOOR(rdev) readl((rdev)->baseaddr + 0x2C)
#define WRINDOOR(rdev, value) writel(value, (rdev)->baseaddr + 0x20)
#define WROUTDOOR(rdev, value) writel(value, (rdev)->baseaddr + 0x2C)
#endif // _MEGARAID_H_
// vim: set ts=8 sw=8 tw=78:
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