megaraid.c

linux 内核源代码

	int	len;
	int	i;

	i = 0;	/* avoid compilation warnings */
	len = 0;
	adapter = (adapter_t *)data;

	len = sprintf(page, "Statistical Information for this controller\n");
	len += sprintf(page+len, "pend_cmds = %d\n",
			atomic_read(&adapter->pend_cmds));
#if MEGA_HAVE_STATS
	for(i = 0; i < adapter->numldrv; i++) {
		len += sprintf(page+len, "Logical Drive %d:\n", i);

		len += sprintf(page+len,
			"\tReads Issued = %lu, Writes Issued = %lu\n",
			adapter->nreads[i], adapter->nwrites[i]);

		len += sprintf(page+len,
			"\tSectors Read = %lu, Sectors Written = %lu\n",
			adapter->nreadblocks[i], adapter->nwriteblocks[i]);

		len += sprintf(page+len,
			"\tRead errors = %lu, Write errors = %lu\n\n",
			adapter->rd_errors[i], adapter->wr_errors[i]);
	}
#else
	len += sprintf(page+len,
			"IO and error counters not compiled in driver.\n");
#endif

	*eof = 1;

	return len;
}


/**
 * proc_read_mbox()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display mailbox information for the last command issued. This information
 * is good for debugging.
 */
static int
proc_read_mbox(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{

	adapter_t	*adapter = (adapter_t *)data;
	volatile mbox_t	*mbox = adapter->mbox;
	int	len = 0;

	len = sprintf(page, "Contents of Mail Box Structure\n");
	len += sprintf(page+len, "  Fw Command   = 0x%02x\n", 
			mbox->m_out.cmd);
	len += sprintf(page+len, "  Cmd Sequence = 0x%02x\n", 
			mbox->m_out.cmdid);
	len += sprintf(page+len, "  No of Sectors= %04d\n", 
			mbox->m_out.numsectors);
	len += sprintf(page+len, "  LBA          = 0x%02x\n", 
			mbox->m_out.lba);
	len += sprintf(page+len, "  DTA          = 0x%08x\n", 
			mbox->m_out.xferaddr);
	len += sprintf(page+len, "  Logical Drive= 0x%02x\n", 
			mbox->m_out.logdrv);
	len += sprintf(page+len, "  No of SG Elmt= 0x%02x\n",
			mbox->m_out.numsgelements);
	len += sprintf(page+len, "  Busy         = %01x\n", 
			mbox->m_in.busy);
	len += sprintf(page+len, "  Status       = 0x%02x\n", 
			mbox->m_in.status);

	*eof = 1;

	return len;
}


/**
 * proc_rebuild_rate()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display current rebuild rate
 */
static int
proc_rebuild_rate(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{
	adapter_t	*adapter = (adapter_t *)data;
	dma_addr_t	dma_handle;
	caddr_t		inquiry;
	struct pci_dev	*pdev;
	int	len = 0;

	if( make_local_pdev(adapter, &pdev) != 0 ) {
		*eof = 1;
		return len;
	}

	if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
		free_local_pdev(pdev);
		*eof = 1;
		return len;
	}

	if( mega_adapinq(adapter, dma_handle) != 0 ) {

		len = sprintf(page, "Adapter inquiry failed.\n");

		printk(KERN_WARNING "megaraid: inquiry failed.\n");

		mega_free_inquiry(inquiry, dma_handle, pdev);

		free_local_pdev(pdev);

		*eof = 1;

		return len;
	}

	if( adapter->flag & BOARD_40LD ) {
		len = sprintf(page, "Rebuild Rate: [%d%%]\n",
			((mega_inquiry3 *)inquiry)->rebuild_rate);
	}
	else {
		len = sprintf(page, "Rebuild Rate: [%d%%]\n",
			((mraid_ext_inquiry *)
			inquiry)->raid_inq.adapter_info.rebuild_rate);
	}


	mega_free_inquiry(inquiry, dma_handle, pdev);

	free_local_pdev(pdev);

	*eof = 1;

	return len;
}


/**
 * proc_battery()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display information about the battery module on the controller.
 */
static int
proc_battery(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{
	adapter_t	*adapter = (adapter_t *)data;
	dma_addr_t	dma_handle;
	caddr_t		inquiry;
	struct pci_dev	*pdev;
	u8	battery_status = 0;
	char	str[256];
	int	len = 0;

	if( make_local_pdev(adapter, &pdev) != 0 ) {
		*eof = 1;
		return len;
	}

	if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
		free_local_pdev(pdev);
		*eof = 1;
		return len;
	}

	if( mega_adapinq(adapter, dma_handle) != 0 ) {

		len = sprintf(page, "Adapter inquiry failed.\n");

		printk(KERN_WARNING "megaraid: inquiry failed.\n");

		mega_free_inquiry(inquiry, dma_handle, pdev);

		free_local_pdev(pdev);

		*eof = 1;

		return len;
	}

	if( adapter->flag & BOARD_40LD ) {
		battery_status = ((mega_inquiry3 *)inquiry)->battery_status;
	}
	else {
		battery_status = ((mraid_ext_inquiry *)inquiry)->
			raid_inq.adapter_info.battery_status;
	}

	/*
	 * Decode the battery status
	 */
	sprintf(str, "Battery Status:[%d]", battery_status);

	if(battery_status == MEGA_BATT_CHARGE_DONE)
		strcat(str, " Charge Done");

	if(battery_status & MEGA_BATT_MODULE_MISSING)
		strcat(str, " Module Missing");
	
	if(battery_status & MEGA_BATT_LOW_VOLTAGE)
		strcat(str, " Low Voltage");
	
	if(battery_status & MEGA_BATT_TEMP_HIGH)
		strcat(str, " Temperature High");
	
	if(battery_status & MEGA_BATT_PACK_MISSING)
		strcat(str, " Pack Missing");
	
	if(battery_status & MEGA_BATT_CHARGE_INPROG)
		strcat(str, " Charge In-progress");
	
	if(battery_status & MEGA_BATT_CHARGE_FAIL)
		strcat(str, " Charge Fail");
	
	if(battery_status & MEGA_BATT_CYCLES_EXCEEDED)
		strcat(str, " Cycles Exceeded");

	len = sprintf(page, "%s\n", str);


	mega_free_inquiry(inquiry, dma_handle, pdev);

	free_local_pdev(pdev);

	*eof = 1;

	return len;
}


/**
 * proc_pdrv_ch0()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display information about the physical drives on physical channel 0.
 */
static int
proc_pdrv_ch0(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{
	adapter_t *adapter = (adapter_t *)data;

	*eof = 1;

	return (proc_pdrv(adapter, page, 0));
}


/**
 * proc_pdrv_ch1()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display information about the physical drives on physical channel 1.
 */
static int
proc_pdrv_ch1(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{
	adapter_t *adapter = (adapter_t *)data;

	*eof = 1;

	return (proc_pdrv(adapter, page, 1));
}


/**
 * proc_pdrv_ch2()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display information about the physical drives on physical channel 2.
 */
static int
proc_pdrv_ch2(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{
	adapter_t *adapter = (adapter_t *)data;

	*eof = 1;

	return (proc_pdrv(adapter, page, 2));
}


/**
 * proc_pdrv_ch3()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display information about the physical drives on physical channel 3.
 */
static int
proc_pdrv_ch3(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{
	adapter_t *adapter = (adapter_t *)data;

	*eof = 1;

	return (proc_pdrv(adapter, page, 3));
}


/**
 * proc_pdrv()
 * @page - buffer to write the data in
 * @adapter - pointer to our soft state
 *
 * Display information about the physical drives.
 */
static int
proc_pdrv(adapter_t *adapter, char *page, int channel)
{
	dma_addr_t	dma_handle;
	char		*scsi_inq;
	dma_addr_t	scsi_inq_dma_handle;
	caddr_t		inquiry;
	struct pci_dev	*pdev;
	u8	*pdrv_state;
	u8	state;
	int	tgt;
	int	max_channels;
	int	len = 0;
	char	str[80];
	int	i;

	if( make_local_pdev(adapter, &pdev) != 0 ) {
		return len;
	}

	if( (inquiry = mega_allocate_inquiry(&dma_handle, pdev)) == NULL ) {
		goto free_pdev;
	}

	if( mega_adapinq(adapter, dma_handle) != 0 ) {
		len = sprintf(page, "Adapter inquiry failed.\n");

		printk(KERN_WARNING "megaraid: inquiry failed.\n");

		goto free_inquiry;
	}


	scsi_inq = pci_alloc_consistent(pdev, 256, &scsi_inq_dma_handle);

	if( scsi_inq == NULL ) {
		len = sprintf(page, "memory not available for scsi inq.\n");

		goto free_inquiry;
	}

	if( adapter->flag & BOARD_40LD ) {
		pdrv_state = ((mega_inquiry3 *)inquiry)->pdrv_state;
	}
	else {
		pdrv_state = ((mraid_ext_inquiry *)inquiry)->
			raid_inq.pdrv_info.pdrv_state;
	}

	max_channels = adapter->product_info.nchannels;

	if( channel >= max_channels ) {
		goto free_pci;
	}

	for( tgt = 0; tgt <= MAX_TARGET; tgt++ ) {

		i = channel*16 + tgt;

		state = *(pdrv_state + i);

		switch( state & 0x0F ) {

		case PDRV_ONLINE:
			sprintf(str,
			"Channel:%2d Id:%2d State: Online",
				channel, tgt);
			break;

		case PDRV_FAILED:
			sprintf(str,
			"Channel:%2d Id:%2d State: Failed",
				channel, tgt);
			break;

		case PDRV_RBLD:
			sprintf(str,
			"Channel:%2d Id:%2d State: Rebuild",
				channel, tgt);
			break;

		case PDRV_HOTSPARE:
			sprintf(str,
			"Channel:%2d Id:%2d State: Hot spare",
				channel, tgt);
			break;

		default:
			sprintf(str,
			"Channel:%2d Id:%2d State: Un-configured",
				channel, tgt);
			break;

		}

		/*
		 * This interface displays inquiries for disk drives
		 * only. Inquries for logical drives and non-disk
		 * devices are available through /proc/scsi/scsi
		 */
		memset(scsi_inq, 0, 256);
		if( mega_internal_dev_inquiry(adapter, channel, tgt,
				scsi_inq_dma_handle) ||
				(scsi_inq[0] & 0x1F) != TYPE_DISK ) {
			continue;
		}

		/*
		 * Check for overflow. We print less than 240
		 * characters for inquiry
		 */
		if( (len + 240) >= PAGE_SIZE ) break;

		len += sprintf(page+len, "%s.\n", str);

		len += mega_print_inquiry(page+len, scsi_inq);
	}

free_pci:
	pci_free_consistent(pdev, 256, scsi_inq, scsi_inq_dma_handle);
free_inquiry:
	mega_free_inquiry(inquiry, dma_handle, pdev);
free_pdev:
	free_local_pdev(pdev);

	return len;
}


/*
 * Display scsi inquiry
 */
static int
mega_print_inquiry(char *page, char *scsi_inq)
{
	int	len = 0;
	int	i;

	len = sprintf(page, "  Vendor: ");
	for( i = 8; i < 16; i++ ) {
		len += sprintf(page+len, "%c", scsi_inq[i]);
	}

	len += sprintf(page+len, "  Model: ");

	for( i = 16; i < 32; i++ ) {
		len += sprintf(page+len, "%c", scsi_inq[i]);
	}

	len += sprintf(page+len, "  Rev: ");

	for( i = 32; i < 36; i++ ) {
		len += sprintf(page+len, "%c", scsi_inq[i]);
	}

	len += sprintf(page+len, "\n");

	i = scsi_inq[0] & 0x1f;

	len += sprintf(page+len, "  Type:   %s ", scsi_device_type(i));

	len += sprintf(page+len,
	"                 ANSI SCSI revision: %02x", scsi_inq[2] & 0x07);

	if( (scsi_inq[2] & 0x07) == 1 && (scsi_inq[3] & 0x0f) == 1 )
		len += sprintf(page+len, " CCS\n");
	else
		len += sprintf(page+len, "\n");

	return len;
}


/**
 * proc_rdrv_10()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display real time information about the logical drives 0 through 9.
 */
static int
proc_rdrv_10(char *page, char **start, off_t offset, int count, int *eof,
		void *data)
{
	adapter_t *adapter = (adapter_t *)data;

	*eof = 1;

	return (proc_rdrv(adapter, page, 0, 9));
}


/**
 * proc_rdrv_20()
 * @page - buffer to write the data in
 * @start - where the actual data has been written in page
 * @offset - same meaning as the read system call
 * @count - same meaning as the read system call
 * @eof - set if no more data needs to be returned
 * @data - pointer to our soft state
 *
 * Display real time information about the logical drives 0 through