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Commit 0f3f6ee6 authored by Ed Lin's avatar Ed Lin Committed by James Bottomley
Browse files

[SCSI] stex: add new 6G controller support 



This adds the support of a new SAS 6G controller (st_yel)

Signed-off-by: default avatarEd Lin <ed.lin@promise.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 591a3a5f

drivers/scsi/stex.c

+351 −31
Original line number Diff line number Diff line
@@ -55,6 +55,13 @@ enum { 
	OIS	= 0x30,	/* MU_OUTBOUND_INTERRUPT_STATUS */

	OIM	= 0x3c,	/* MU_OUTBOUND_INTERRUPT_MASK */



	YH2I_INT				= 0x20,

	YINT_EN					= 0x34,

	YI2H_INT				= 0x9c,

	YI2H_INT_C				= 0xa0,

	YH2I_REQ				= 0xc0,

	YH2I_REQ_HI				= 0xc4,



	/* MU register value */

	MU_INBOUND_DOORBELL_HANDSHAKE		= 1,

	MU_INBOUND_DOORBELL_REQHEADCHANGED	= 2,
@@ -95,9 +102,14 @@ enum { 
	TASK_ATTRIBUTE_ORDERED			= 0x2,

	TASK_ATTRIBUTE_ACA			= 0x4,



	SS_STS_NORMAL				= 0x80000000,

	SS_STS_DONE				= 0x40000000,

	SS_STS_HANDSHAKE			= 0x20000000,



	SS_HEAD_HANDSHAKE			= 0x80,



	STEX_CDB_LENGTH				= 16,

	STATUS_VAR_LEN				= 128,

	ST_MAX_SG				= 32,



	/* sg flags */

	SG_CF_EOT				= 0x80,	/* end of table */
@@ -111,6 +123,7 @@ enum { 
	st_vsc					= 1,

	st_yosemite				= 2,

	st_seq					= 3,

	st_yel					= 4,



	PASSTHRU_REQ_TYPE			= 0x00000001,

	PASSTHRU_REQ_NO_WAKEUP			= 0x00000100,
@@ -151,12 +164,26 @@ struct st_sgitem { 
	__le64 addr;

};



struct st_ss_sgitem {

	__le32 addr;

	__le32 addr_hi;

	__le32 count;

};



struct st_sgtable {

	__le16 sg_count;

	__le16 max_sg_count;

	__le32 sz_in_byte;

};



struct st_msg_header {

	__le64 handle;

	u8 flag;

	u8 channel;

	__le16 timeout;

	u32 reserved;

};



struct handshake_frame {

	__le64 rb_phy;		/* request payload queue physical address */

	__le16 req_sz;		/* size of each request payload */
@@ -172,7 +199,8 @@ struct handshake_frame { 
	__le32 partner_ver_build;

	__le32 extra_offset;	/* NEW */

	__le32 extra_size;	/* NEW */

	u32 reserved1[2];

	__le32 scratch_size;

	u32 reserved1;

};



struct req_msg {
@@ -263,6 +291,10 @@ struct st_hba { 
	struct Scsi_Host *host;

	struct pci_dev *pdev;



	struct req_msg * (*alloc_rq) (struct st_hba *);

	int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);

	void (*send) (struct st_hba *, struct req_msg *, u16);



	u32 req_head;

	u32 req_tail;

	u32 status_head;
@@ -272,6 +304,7 @@ struct st_hba { 
	void *copy_buffer; /* temp buffer for driver-handled commands */

	struct st_ccb *ccb;

	struct st_ccb *wait_ccb;

	__le32 *scratch;



	unsigned int mu_status;

	unsigned int cardtype;
@@ -284,6 +317,9 @@ struct st_hba { 
};



struct st_card_info {

	struct req_msg * (*alloc_rq) (struct st_hba *);

	int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *);

	void (*send) (struct st_hba *, struct req_msg *, u16);

	unsigned int max_id;

	unsigned int max_lun;

	unsigned int max_channel;
@@ -352,6 +388,12 @@ static struct req_msg *stex_alloc_req(struct st_hba *hba) 
	return req;

}



static struct req_msg *stex_ss_alloc_req(struct st_hba *hba)

{

	return (struct req_msg *)(hba->dma_mem +

		hba->req_head * hba->rq_size + sizeof(struct st_msg_header));

}



static int stex_map_sg(struct st_hba *hba,

	struct req_msg *req, struct st_ccb *ccb)

{
@@ -384,6 +426,39 @@ static int stex_map_sg(struct st_hba *hba, 
	return nseg;

}



static int stex_ss_map_sg(struct st_hba *hba,

	struct req_msg *req, struct st_ccb *ccb)

{

	struct scsi_cmnd *cmd;

	struct scatterlist *sg;

	struct st_sgtable *dst;

	struct st_ss_sgitem *table;

	int i, nseg;



	cmd = ccb->cmd;

	nseg = scsi_dma_map(cmd);

	BUG_ON(nseg < 0);

	if (nseg) {

		dst = (struct st_sgtable *)req->variable;



		ccb->sg_count = nseg;

		dst->sg_count = cpu_to_le16((u16)nseg);

		dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize);

		dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd));



		table = (struct st_ss_sgitem *)(dst + 1);

		scsi_for_each_sg(cmd, sg, nseg, i) {

			table[i].count = cpu_to_le32((u32)sg_dma_len(sg));

			table[i].addr =

				cpu_to_le32(sg_dma_address(sg) & 0xffffffff);

			table[i].addr_hi =

				cpu_to_le32((sg_dma_address(sg) >> 16) >> 16);

		}

	}



	return nseg;

}



static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)

{

	struct st_frame *p;
@@ -424,6 +499,37 @@ stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) 
	readl(hba->mmio_base + IDBL); /* flush */

}



static void

stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)

{

	struct scsi_cmnd *cmd;

	struct st_msg_header *msg_h;

	dma_addr_t addr;



	req->tag = cpu_to_le16(tag);



	hba->ccb[tag].req = req;

	hba->out_req_cnt++;



	cmd = hba->ccb[tag].cmd;

	msg_h = (struct st_msg_header *)req - 1;

	if (likely(cmd)) {

		msg_h->channel = (u8)cmd->device->channel;

		msg_h->timeout = cpu_to_le16(cmd->request->timeout/HZ);

	}

	addr = hba->dma_handle + hba->req_head * hba->rq_size;

	addr += (hba->ccb[tag].sg_count+4)/11;

	msg_h->handle = cpu_to_le64(addr);



	++hba->req_head;

	hba->req_head %= hba->rq_count+1;



	writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI);

	readl(hba->mmio_base + YH2I_REQ_HI); /* flush */

	writel(addr, hba->mmio_base + YH2I_REQ);

	readl(hba->mmio_base + YH2I_REQ); /* flush */

}



static int

stex_slave_alloc(struct scsi_device *sdev)

{
@@ -504,7 +610,8 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *)) 
	case INQUIRY:

		if (id != host->max_id - 1)

			break;

		if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {

		if (!lun && !cmd->device->channel &&

			(cmd->cmnd[1] & INQUIRY_EVPD) == 0) {

			scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page,

						 sizeof(console_inq_page));

			cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
@@ -542,7 +649,7 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *)) 
	if (unlikely(tag >= host->can_queue))

		return SCSI_MLQUEUE_HOST_BUSY;



	req = stex_alloc_req(hba);

	req = hba->alloc_rq(hba);



	req->lun = lun;

	req->target = id;
@@ -561,10 +668,12 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *)) 
	hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;

	hba->ccb[tag].sense_buffer = cmd->sense_buffer;



	if (cmd->sc_data_direction != DMA_NONE)

		stex_map_sg(hba, req, &hba->ccb[tag]);

	if (!hba->map_sg(hba, req, &hba->ccb[tag])) {

		hba->ccb[tag].sg_count = 0;

		memset(&req->variable[0], 0, 8);

	}



	stex_send_cmd(hba, req, tag);

	hba->send(hba, req, tag);

	return 0;

}
@@ -746,7 +855,103 @@ static irqreturn_t stex_intr(int irq, void *__hba) 
	return IRQ_RETVAL(handled);

}



static int stex_handshake(struct st_hba *hba)

static void stex_ss_mu_intr(struct st_hba *hba)

{

	struct status_msg *resp;

	struct st_ccb *ccb;

	__le32 *scratch;

	unsigned int size;

	int count = 0;

	u32 value;

	u16 tag;



	if (unlikely(hba->out_req_cnt <= 0 ||

			hba->mu_status == MU_STATE_RESETTING))

		return;



	while (count < hba->sts_count) {

		scratch = hba->scratch + hba->status_tail;

		value = le32_to_cpu(*scratch);

		if (unlikely(!(value & SS_STS_NORMAL)))

			return;



		resp = hba->status_buffer + hba->status_tail;

		*scratch = 0;

		++count;

		++hba->status_tail;

		hba->status_tail %= hba->sts_count+1;



		tag = (u16)value;

		if (unlikely(tag >= hba->host->can_queue)) {

			printk(KERN_WARNING DRV_NAME

					"(%s): invalid tag\n", pci_name(hba->pdev));

			continue;

		}



		hba->out_req_cnt--;

		ccb = &hba->ccb[tag];

		if (unlikely(hba->wait_ccb == ccb))

			hba->wait_ccb = NULL;

		if (unlikely(ccb->req == NULL)) {

			printk(KERN_WARNING DRV_NAME

				"(%s): lagging req\n", pci_name(hba->pdev));

			continue;

		}



		ccb->req = NULL;

		if (likely(value & SS_STS_DONE)) { /* normal case */

			ccb->srb_status = SRB_STATUS_SUCCESS;

			ccb->scsi_status = SAM_STAT_GOOD;

		} else {

			ccb->srb_status = resp->srb_status;

			ccb->scsi_status = resp->scsi_status;

			size = resp->payload_sz * sizeof(u32);

			if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||

				size > sizeof(*resp))) {

				printk(KERN_WARNING DRV_NAME

					"(%s): bad status size\n",

					pci_name(hba->pdev));

			} else {

				size -= sizeof(*resp) - STATUS_VAR_LEN;

				if (size)

					stex_copy_data(ccb, resp, size);

			}

			if (likely(ccb->cmd != NULL))

				stex_check_cmd(hba, ccb, resp);

		}



		if (likely(ccb->cmd != NULL)) {

			scsi_dma_unmap(ccb->cmd);

			stex_scsi_done(ccb);

		} else

			ccb->req_type = 0;

	}

}



static irqreturn_t stex_ss_intr(int irq, void *__hba)

{

	struct st_hba *hba = __hba;

	void __iomem *base = hba->mmio_base;

	u32 data;

	unsigned long flags;

	int handled = 0;



	spin_lock_irqsave(hba->host->host_lock, flags);



	data = readl(base + YI2H_INT);

	if (data && data != 0xffffffff) {

		/* clear the interrupt */

		writel(data, base + YI2H_INT_C);

		stex_ss_mu_intr(hba);

		handled = 1;

	}



	spin_unlock_irqrestore(hba->host->host_lock, flags);



	return IRQ_RETVAL(handled);

}



static int stex_common_handshake(struct st_hba *hba)

{

	void __iomem *base = hba->mmio_base;

	struct handshake_frame *h;
@@ -827,10 +1032,79 @@ static int stex_handshake(struct st_hba *hba) 
	readl(base + IMR1);

	writel(0, base + OMR1);

	readl(base + OMR1); /* flush */

	hba->mu_status = MU_STATE_STARTED;

	return 0;

}



static int stex_ss_handshake(struct st_hba *hba)

{

	void __iomem *base = hba->mmio_base;

	struct st_msg_header *msg_h;

	struct handshake_frame *h;

	__le32 *scratch = hba->scratch;

	u32 data;

	unsigned long before;

	int ret = 0;



	h = (struct handshake_frame *)(hba->alloc_rq(hba));

	msg_h = (struct st_msg_header *)h - 1;

	msg_h->handle = cpu_to_le64(hba->dma_handle);

	msg_h->flag = SS_HEAD_HANDSHAKE;



	h->rb_phy = cpu_to_le64(hba->dma_handle);

	h->req_sz = cpu_to_le16(hba->rq_size);

	h->req_cnt = cpu_to_le16(hba->rq_count+1);

	h->status_sz = cpu_to_le16(sizeof(struct status_msg));

	h->status_cnt = cpu_to_le16(hba->sts_count+1);

	stex_gettime(&h->hosttime);

	h->partner_type = HMU_PARTNER_TYPE;

	h->extra_offset = h->extra_size = 0;

	h->scratch_size = cpu_to_le32((hba->sts_count+1)*sizeof(u32));



	data = readl(base + YINT_EN);

	data &= ~4;

	writel(data, base + YINT_EN);

	writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI);

	writel(hba->dma_handle, base + YH2I_REQ);



	scratch = hba->scratch;

	before = jiffies;

	while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) {

		if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) {

			printk(KERN_ERR DRV_NAME

				"(%s): no signature after handshake frame\n",

				pci_name(hba->pdev));

			ret = -1;

			break;

		}

		rmb();

		msleep(1);

	}



	*scratch = 0;

	msg_h->flag = 0;

	return ret;

}



static int stex_handshake(struct st_hba *hba)

{

	int err;

	unsigned long flags;



	err = (hba->cardtype == st_yel) ?

		stex_ss_handshake(hba) : stex_common_handshake(hba);

	if (err == 0) {

		spin_lock_irqsave(hba->host->host_lock, flags);

		hba->req_head = 0;

		hba->req_tail = 0;

		hba->status_head = 0;

		hba->status_tail = 0;

		hba->out_req_cnt = 0;

		hba->mu_status = MU_STATE_STARTED;

		spin_unlock_irqrestore(hba->host->host_lock, flags);

	}

	return err;

}



static int stex_abort(struct scsi_cmnd *cmd)

{

	struct Scsi_Host *host = cmd->device->host;
@@ -859,6 +1133,14 @@ static int stex_abort(struct scsi_cmnd *cmd) 
			goto out;

	}



	if (hba->cardtype == st_yel) {

		data = readl(base + YI2H_INT);

		if (data == 0 || data == 0xffffffff)

			goto fail_out;



		writel(data, base + YI2H_INT_C);

		stex_ss_mu_intr(hba);

	} else {

		data = readl(base + ODBL);

		if (data == 0 || data == 0xffffffff)

			goto fail_out;
@@ -867,7 +1149,7 @@ static int stex_abort(struct scsi_cmnd *cmd) 
		readl(base + ODBL); /* flush */



		stex_mu_intr(hba, data);



	}

	if (hba->wait_ccb == NULL) {

		printk(KERN_WARNING DRV_NAME

			"(%s): lost interrupt\n", pci_name(hba->pdev));
@@ -947,13 +1229,6 @@ static int stex_reset(struct scsi_cmnd *cmd) 
				pci_name(hba->pdev));

			return FAILED;

		}

		spin_lock_irqsave(hba->host->host_lock, flags);

		hba->req_head = 0;

		hba->req_tail = 0;

		hba->status_head = 0;

		hba->status_tail = 0;

		hba->out_req_cnt = 0;

		spin_unlock_irqrestore(hba->host->host_lock, flags);

		return SUCCESS;

	}
@@ -1021,7 +1296,6 @@ static struct scsi_host_template driver_template = { 
	.eh_abort_handler		= stex_abort,

	.eh_host_reset_handler		= stex_reset,

	.this_id			= -1,

	.sg_tablesize			= ST_MAX_SG,

};



static struct pci_device_id stex_pci_tbl[] = {
@@ -1039,10 +1313,14 @@ static struct pci_device_id stex_pci_tbl[] = { 
	{ 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },



	/* st_yosemite */

	{ 0x105a, 0x8650, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yosemite },

	{ 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite },



	/* st_seq */

	{ 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq },



	/* st_yel */

	{ 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel },

	{ 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel },

	{ }	/* terminate list */

};
@@ -1055,6 +1333,9 @@ static struct st_card_info stex_card_info[] = { 
		.rq_count	= 32,

		.rq_size	= 1048,

		.sts_count	= 32,

		.alloc_rq	= stex_alloc_req,

		.map_sg		= stex_map_sg,

		.send		= stex_send_cmd,

	},



	/* st_vsc */
@@ -1065,6 +1346,9 @@ static struct st_card_info stex_card_info[] = { 
		.rq_count	= 32,

		.rq_size	= 1048,

		.sts_count	= 32,

		.alloc_rq	= stex_alloc_req,

		.map_sg		= stex_map_sg,

		.send		= stex_send_cmd,

	},



	/* st_yosemite */
@@ -1075,6 +1359,9 @@ static struct st_card_info stex_card_info[] = { 
		.rq_count	= 256,

		.rq_size	= 1048,

		.sts_count	= 256,

		.alloc_rq	= stex_alloc_req,

		.map_sg		= stex_map_sg,

		.send		= stex_send_cmd,

	},



	/* st_seq */
@@ -1085,6 +1372,22 @@ static struct st_card_info stex_card_info[] = { 
		.rq_count	= 32,

		.rq_size	= 1048,

		.sts_count	= 32,

		.alloc_rq	= stex_alloc_req,

		.map_sg		= stex_map_sg,

		.send		= stex_send_cmd,

	},



	/* st_yel */

	{

		.max_id		= 129,

		.max_lun	= 256,

		.max_channel	= 3,

		.rq_count	= 801,

		.rq_size	= 512,

		.sts_count	= 801,

		.alloc_rq	= stex_ss_alloc_req,

		.map_sg		= stex_ss_map_sg,

		.send		= stex_ss_send_cmd,

	},

};
@@ -1117,7 +1420,8 @@ static int stex_request_irq(struct st_hba *hba) 
	} else

		hba->msi_enabled = 0;



	status = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);

	status = request_irq(pdev->irq, hba->cardtype == st_yel ?

		stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba);



	if (status != 0) {

		if (hba->msi_enabled)
@@ -1141,7 +1445,7 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
	struct st_hba *hba;

	struct Scsi_Host *host;

	const struct st_card_info *ci = NULL;

	u32 sts_offset, cp_offset;

	u32 sts_offset, cp_offset, scratch_offset;

	int err;



	err = pci_enable_device(pdev);
@@ -1186,7 +1490,9 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) 


	hba->cardtype = (unsigned int) id->driver_data;

	ci = &stex_card_info[hba->cardtype];

	sts_offset = (ci->rq_count+1) * ci->rq_size;

	sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size;

	if (hba->cardtype == st_yel)

		sts_offset += (ci->sts_count+1) * sizeof(u32);

	cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg);

	hba->dma_size = cp_offset + sizeof(struct st_frame);

	if (hba->cardtype == st_seq ||
@@ -1211,13 +1517,22 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
		goto out_pci_free;

	}



	if (hba->cardtype == st_yel)

		hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset);

	hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset);

	hba->copy_buffer = hba->dma_mem + cp_offset;

	hba->rq_count = ci->rq_count;

	hba->rq_size = ci->rq_size;

	hba->sts_count = ci->sts_count;

	hba->alloc_rq = ci->alloc_rq;

	hba->map_sg = ci->map_sg;

	hba->send = ci->send;

	hba->mu_status = MU_STATE_STARTING;



	if (hba->cardtype == st_yel)

		host->sg_tablesize = 38;

	else

		host->sg_tablesize = 32;

	host->can_queue = ci->rq_count;

	host->cmd_per_lun = ci->rq_count;

	host->max_id = ci->max_id;
@@ -1282,15 +1597,20 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
static void stex_hba_stop(struct st_hba *hba)

{

	struct req_msg *req;

	struct st_msg_header *msg_h;

	unsigned long flags;

	unsigned long before;

	u16 tag = 0;



	spin_lock_irqsave(hba->host->host_lock, flags);

	req = stex_alloc_req(hba);

	memset(req->cdb, 0, STEX_CDB_LENGTH);

	req = hba->alloc_rq(hba);

	if (hba->cardtype == st_yel) {

		msg_h = (struct st_msg_header *)req - 1;

		memset(msg_h, 0, hba->rq_size);

	} else

		memset(req, 0, hba->rq_size);



	if (hba->cardtype == st_yosemite) {

	if (hba->cardtype == st_yosemite || hba->cardtype == st_yel) {

		req->cdb[0] = MGT_CMD;

		req->cdb[1] = MGT_CMD_SIGNATURE;

		req->cdb[2] = CTLR_CONFIG_CMD;
@@ -1307,7 +1627,7 @@ static void stex_hba_stop(struct st_hba *hba) 
	hba->ccb[tag].sense_buffer = NULL;

	hba->ccb[tag].req_type = PASSTHRU_REQ_TYPE;



	stex_send_cmd(hba, req, tag);

	hba->send(hba, req, tag);

	spin_unlock_irqrestore(hba->host->host_lock, flags);



	before = jiffies;