mptbase.c

linux-2.6.15.6

 *	Returns 0 for success, non-zero for failure.
 */
int
mpt_send_handshake_request(int handle, MPT_ADAPTER *ioc, int reqBytes, u32 *req, int sleepFlag)
{
	int		 r = 0;
	u8	*req_as_bytes;
	int	 ii;

	/* State is known to be good upon entering
	 * this function so issue the bus reset
	 * request.
	 */

	/*
	 * Emulate what mpt_put_msg_frame() does /wrt to sanity
	 * setting cb_idx/req_idx.  But ONLY if this request
	 * is in proper (pre-alloc'd) request buffer range...
	 */
	ii = MFPTR_2_MPT_INDEX(ioc,(MPT_FRAME_HDR*)req);
	if (reqBytes >= 12 && ii >= 0 && ii < ioc->req_depth) {
		MPT_FRAME_HDR *mf = (MPT_FRAME_HDR*)req;
		mf->u.frame.hwhdr.msgctxu.fld.req_idx = cpu_to_le16(ii);
		mf->u.frame.hwhdr.msgctxu.fld.cb_idx = handle;
	}

	/* Make sure there are no doorbells */
	CHIPREG_WRITE32(&ioc->chip->IntStatus, 0);

	CHIPREG_WRITE32(&ioc->chip->Doorbell,
			((MPI_FUNCTION_HANDSHAKE<<MPI_DOORBELL_FUNCTION_SHIFT) |
			 ((reqBytes/4)<<MPI_DOORBELL_ADD_DWORDS_SHIFT)));

	/* Wait for IOC doorbell int */
	if ((ii = WaitForDoorbellInt(ioc, 5, sleepFlag)) < 0) {
		return ii;
	}

	/* Read doorbell and check for active bit */
	if (!(CHIPREG_READ32(&ioc->chip->Doorbell) & MPI_DOORBELL_ACTIVE))
		return -5;

	dhsprintk((KERN_INFO MYNAM ": %s: mpt_send_handshake_request start, WaitCnt=%d\n",
		ioc->name, ii));

	CHIPREG_WRITE32(&ioc->chip->IntStatus, 0);

	if ((r = WaitForDoorbellAck(ioc, 5, sleepFlag)) < 0) {
		return -2;
	}

	/* Send request via doorbell handshake */
	req_as_bytes = (u8 *) req;
	for (ii = 0; ii < reqBytes/4; ii++) {
		u32 word;

		word = ((req_as_bytes[(ii*4) + 0] <<  0) |
			(req_as_bytes[(ii*4) + 1] <<  8) |
			(req_as_bytes[(ii*4) + 2] << 16) |
			(req_as_bytes[(ii*4) + 3] << 24));
		CHIPREG_WRITE32(&ioc->chip->Doorbell, word);
		if ((r = WaitForDoorbellAck(ioc, 5, sleepFlag)) < 0) {
			r = -3;
			break;
		}
	}

	if (r >= 0 && WaitForDoorbellInt(ioc, 10, sleepFlag) >= 0)
		r = 0;
	else
		r = -4;

	/* Make sure there are no doorbells */
	CHIPREG_WRITE32(&ioc->chip->IntStatus, 0);

	return r;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 * mpt_host_page_access_control - provides mechanism for the host
 * driver to control the IOC's Host Page Buffer access.
 * @ioc: Pointer to MPT adapter structure
 * @access_control_value: define bits below
 *
 * Access Control Value - bits[15:12]
 * 0h Reserved
 * 1h Enable Access { MPI_DB_HPBAC_ENABLE_ACCESS }
 * 2h Disable Access { MPI_DB_HPBAC_DISABLE_ACCESS }
 * 3h Free Buffer { MPI_DB_HPBAC_FREE_BUFFER }
 *
 * Returns 0 for success, non-zero for failure.
 */

static int
mpt_host_page_access_control(MPT_ADAPTER *ioc, u8 access_control_value, int sleepFlag)
{
	int	 r = 0;

	/* return if in use */
	if (CHIPREG_READ32(&ioc->chip->Doorbell)
	    & MPI_DOORBELL_ACTIVE)
	    return -1;

	CHIPREG_WRITE32(&ioc->chip->IntStatus, 0);

	CHIPREG_WRITE32(&ioc->chip->Doorbell,
		((MPI_FUNCTION_HOST_PAGEBUF_ACCESS_CONTROL
		 <<MPI_DOORBELL_FUNCTION_SHIFT) |
		 (access_control_value<<12)));

	/* Wait for IOC to clear Doorbell Status bit */
	if ((r = WaitForDoorbellAck(ioc, 5, sleepFlag)) < 0) {
		return -2;
	}else
		return 0;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mpt_host_page_alloc - allocate system memory for the fw
 *	If we already allocated memory in past, then resend the same pointer.
 *	ioc@: Pointer to pointer to IOC adapter
 *	ioc_init@: Pointer to ioc init config page
 *
 *	Returns 0 for success, non-zero for failure.
 */
static int
mpt_host_page_alloc(MPT_ADAPTER *ioc, pIOCInit_t ioc_init)
{
	char	*psge;
	int	flags_length;
	u32	host_page_buffer_sz=0;

	if(!ioc->HostPageBuffer) {

		host_page_buffer_sz =
		    le32_to_cpu(ioc->facts.HostPageBufferSGE.FlagsLength) & 0xFFFFFF;

		if(!host_page_buffer_sz)
			return 0; /* fw doesn't need any host buffers */

		/* spin till we get enough memory */
		while(host_page_buffer_sz > 0) {

			if((ioc->HostPageBuffer = pci_alloc_consistent(
			    ioc->pcidev,
			    host_page_buffer_sz,
			    &ioc->HostPageBuffer_dma)) != NULL) {

				dinitprintk((MYIOC_s_INFO_FMT
				    "host_page_buffer @ %p, dma @ %x, sz=%d bytes\n",
				    ioc->name,
				    ioc->HostPageBuffer,
				    ioc->HostPageBuffer_dma,
				    host_page_buffer_sz));
				ioc->alloc_total += host_page_buffer_sz;
				ioc->HostPageBuffer_sz = host_page_buffer_sz;
				break;
			}

			host_page_buffer_sz -= (4*1024);
		}
	}

	if(!ioc->HostPageBuffer) {
		printk(MYIOC_s_ERR_FMT
		    "Failed to alloc memory for host_page_buffer!\n",
		    ioc->name);
		return -999;
	}

	psge = (char *)&ioc_init->HostPageBufferSGE;
	flags_length = MPI_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI_SGE_FLAGS_SYSTEM_ADDRESS |
	    MPI_SGE_FLAGS_32_BIT_ADDRESSING |
	    MPI_SGE_FLAGS_HOST_TO_IOC |
	    MPI_SGE_FLAGS_END_OF_BUFFER;
	if (sizeof(dma_addr_t) == sizeof(u64)) {
	    flags_length |= MPI_SGE_FLAGS_64_BIT_ADDRESSING;
	}
	flags_length = flags_length << MPI_SGE_FLAGS_SHIFT;
	flags_length |= ioc->HostPageBuffer_sz;
	mpt_add_sge(psge, flags_length, ioc->HostPageBuffer_dma);
	ioc->facts.HostPageBufferSGE = ioc_init->HostPageBufferSGE;

return 0;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mpt_verify_adapter - Given a unique IOC identifier, set pointer to
 *	the associated MPT adapter structure.
 *	@iocid: IOC unique identifier (integer)
 *	@iocpp: Pointer to pointer to IOC adapter
 *
 *	Returns iocid and sets iocpp.
 */
int
mpt_verify_adapter(int iocid, MPT_ADAPTER **iocpp)
{
	MPT_ADAPTER *ioc;

	list_for_each_entry(ioc,&ioc_list,list) {
		if (ioc->id == iocid) {
			*iocpp =ioc;
			return iocid;
		}
	}

	*iocpp = NULL;
	return -1;
}

int
mpt_alt_ioc_wait(MPT_ADAPTER *ioc)
{
	int loop_count = 30 * 4;  /* Wait 30 seconds */
	int status = -1; /* -1 means failed to get board READY */

	do {
		spin_lock(&ioc->initializing_hba_lock);
		if (ioc->initializing_hba_lock_flag == 0) {
			ioc->initializing_hba_lock_flag=1;
			spin_unlock(&ioc->initializing_hba_lock);
			status = 0;
			break;
		}
		spin_unlock(&ioc->initializing_hba_lock);
		set_current_state(TASK_INTERRUPTIBLE);
		schedule_timeout(HZ/4);
	} while (--loop_count);

	return status;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
 *	mpt_bringup_adapter - This is a wrapper function for mpt_do_ioc_recovery
 *	@ioc: Pointer to MPT adapter structure
 *	@sleepFlag: Use schedule if CAN_SLEEP else use udelay.
 *
 *	This routine performs all the steps necessary to bring the IOC
 *	to a OPERATIONAL state.
 *
 *      Special Note: This function was added with spin lock's so as to allow
 *      the dv(domain validation) work thread to succeed on the other channel
 *      that maybe occuring at the same time when this function is called.
 *      Without this lock, the dv would fail when message frames were
 *      requested during hba bringup on the alternate ioc.
 */
static int
mpt_bringup_adapter(MPT_ADAPTER *ioc, int sleepFlag)
{
	int r;

	if(ioc->alt_ioc) {
		if((r=mpt_alt_ioc_wait(ioc->alt_ioc)!=0))
			return r;
	}

	r = mpt_do_ioc_recovery(ioc, MPT_HOSTEVENT_IOC_BRINGUP,
	    CAN_SLEEP);

	if(ioc->alt_ioc) {
		spin_lock(&ioc->alt_ioc->initializing_hba_lock);
		ioc->alt_ioc->initializing_hba_lock_flag=0;
		spin_unlock(&ioc->alt_ioc->initializing_hba_lock);
	}

return r;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
 *	mpt_attach - Install a PCI intelligent MPT adapter.
 *	@pdev: Pointer to pci_dev structure
 *
 *	This routine performs all the steps necessary to bring the IOC of
 *	a MPT adapter to a OPERATIONAL state.  This includes registering
 *	memory regions, registering the interrupt, and allocating request
 *	and reply memory pools.
 *
 *	This routine also pre-fetches the LAN MAC address of a Fibre Channel
 *	MPT adapter.
 *
 *	Returns 0 for success, non-zero for failure.
 *
 *	TODO: Add support for polled controllers
 */
int
mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id)
{
	MPT_ADAPTER	*ioc;
	u8		__iomem *mem;
	unsigned long	 mem_phys;
	unsigned long	 port;
	u32		 msize;
	u32		 psize;
	int		 ii;
	int		 r = -ENODEV;
	u8		 revision;
	u8		 pcixcmd;
	static int	 mpt_ids = 0;
#ifdef CONFIG_PROC_FS
	struct proc_dir_entry *dent, *ent;
#endif

	if (pci_enable_device(pdev))
		return r;

	dinitprintk((KERN_WARNING MYNAM ": mpt_adapter_install\n"));

	if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
		dprintk((KERN_INFO MYNAM
			": 64 BIT PCI BUS DMA ADDRESSING SUPPORTED\n"));
	} else if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
		printk(KERN_WARNING MYNAM ": 32 BIT PCI BUS DMA ADDRESSING NOT SUPPORTED\n");
		return r;
	}

	if (!pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
		dprintk((KERN_INFO MYNAM
			": Using 64 bit consistent mask\n"));
	else
		dprintk((KERN_INFO MYNAM
			": Not using 64 bit consistent mask\n"));

	ioc = kmalloc(sizeof(MPT_ADAPTER), GFP_ATOMIC);
	if (ioc == NULL) {
		printk(KERN_ERR MYNAM ": ERROR - Insufficient memory to add adapter!\n");
		return -ENOMEM;
	}
	memset(ioc, 0, sizeof(MPT_ADAPTER));
	ioc->alloc_total = sizeof(MPT_ADAPTER);
	ioc->req_sz = MPT_DEFAULT_FRAME_SIZE;		/* avoid div by zero! */
	ioc->reply_sz = MPT_REPLY_FRAME_SIZE;

	ioc->pcidev = pdev;
	ioc->diagPending = 0;
	spin_lock_init(&ioc->diagLock);
	spin_lock_init(&ioc->initializing_hba_lock);

	/* Initialize the event logging.
	 */
	ioc->eventTypes = 0;	/* None */
	ioc->eventContext = 0;
	ioc->eventLogSize = 0;
	ioc->events = NULL;

#ifdef MFCNT
	ioc->mfcnt = 0;
#endif

	ioc->cached_fw = NULL;

	/* Initilize SCSI Config Data structure
	 */
	memset(&ioc->spi_data, 0, sizeof(SpiCfgData));

	/* Initialize the running configQ head.
	 */
	INIT_LIST_HEAD(&ioc->configQ);

	/* Find lookup slot. */
	INIT_LIST_HEAD(&ioc->list);
	ioc->id = mpt_ids++;

	mem_phys = msize = 0;
	port = psize = 0;
	for (ii=0; ii < DEVICE_COUNT_RESOURCE; ii++) {
		if (pci_resource_flags(pdev, ii) & PCI_BASE_ADDRESS_SPACE_IO) {
			/* Get I/O space! */
			port = pci_resource_start(pdev, ii);
			psize = pci_resource_len(pdev,ii);
		} else {
			/* Get memmap */
			mem_phys = pci_resource_start(pdev, ii);
			msize = pci_resource_len(pdev,ii);
			break;
		}
	}
	ioc->mem_size = msize;

	if (ii == DEVICE_COUNT_RESOURCE) {
		printk(KERN_ERR MYNAM ": ERROR - MPT adapter has no memory regions defined!\n");
		kfree(ioc);
		return -EINVAL;
	}

	dinitprintk((KERN_INFO MYNAM ": MPT adapter @ %lx, msize=%dd bytes\n", mem_phys, msize));
	dinitprintk((KERN_INFO MYNAM ": (port i/o @ %lx, psize=%dd bytes)\n", port, psize));

	mem = NULL;
	/* Get logical ptr for PciMem0 space */
	/*mem = ioremap(mem_phys, msize);*/
	mem = ioremap(mem_phys, 0x100);
	if (mem == NULL) {
		printk(KERN_ERR MYNAM ": ERROR - Unable to map adapter memory!\n");
		kfree(ioc);
		return -EINVAL;
	}
	ioc->memmap = mem;
	dinitprintk((KERN_INFO MYNAM ": mem = %p, mem_phys = %lx\n", mem, mem_phys));

	dinitprintk((KERN_INFO MYNAM ": facts @ %p, pfacts[0] @ %p\n",
			&ioc->facts, &ioc->pfacts[0]));

	ioc->mem_phys = mem_phys;
	ioc->chip = (SYSIF_REGS __iomem *)mem;

	/* Save Port IO values in case we need to do downloadboot */
	{
		u8 *pmem = (u8*)port;
		ioc->pio_mem_phys = port;
		ioc->pio_chip = (SYSIF_REGS __iomem *)pmem;
	}

	if (pdev->device == MPI_MANUFACTPAGE_DEVICEID_FC909) {
		ioc->prod_name = "LSIFC909";
		ioc->bus_type = FC;
	}
	else if (pdev->device == MPI_MANUFACTPAGE_DEVICEID_FC929) {
		ioc->prod_name = "LSIFC929";
		ioc->bus_type = FC;
	}
	else if (pdev->device == MPI_MANUFACTPAGE_DEVICEID_FC919) {
		ioc->prod_name = "LSIFC919";
		ioc->bus_type = FC;
	}
	else if (pdev->device == MPI_MANUFACTPAGE_DEVICEID_FC929X) {
		pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
		ioc->bus_type = FC;
		if (revision < XL_929) {
			ioc->prod_name = "LSIFC929X";
			/* 929X Chip Fix. Set Split transactions level
		 	* for PCIX. Set MOST bits to zero.
		 	*/
			pci_read_config_byte(pdev, 0x6a, &pcixcmd);
			pcixcmd &= 0x8F;
			pci_write_config_byte(pdev, 0x6a, pcixcmd);
		} else {
			ioc->prod_name = "LSIFC929XL";
			/* 929XL Chip Fix. Set MMRBC to 0x08.
		 	*/
			pci_read_config_byte(pdev, 0x6a, &pcixcmd);
			pcixcmd |= 0x08;
			pci_write_config_byte(pdev, 0x6a, pcixcmd);
		}
	}
	else if (pdev->device == MPI_MANUFACTPAGE_DEVICEID_FC919X) {
		ioc->prod_name = "LSIFC919X";
		ioc->bus_type = FC;