[SCSI] mvsas: split driver into multiple files

Split mvsas driver into multiple source codes, based on the split
and function distribution found in Marvell's mvsas update.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 524 insertions, 0 deletions

diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
new file mode 100644
index 00000000000..258a1a92329
--- /dev/null
+++ b/drivers/scsi/mvsas/mv_init.c
@@ -0,0 +1,524 @@
+/*
+	mv_init.c - Marvell 88SE6440 SAS/SATA init support
+
+	Copyright 2007 Red Hat, Inc.
+	Copyright 2008 Marvell. <kewei@marvell.com>
+
+	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,
+	or (at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty
+	of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+	See the GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public
+	License along with this program; see the file COPYING.	If not,
+	write to the Free Software Foundation, 675 Mass Ave, Cambridge,
+	MA 02139, USA.
+
+ */
+
+#include "mv_sas.h"
+#include "mv_64xx.h"
+#include "mv_chips.h"
+
+static struct scsi_transport_template *mvs_stt;
+
+static const struct mvs_chip_info mvs_chips[] = {
+	[chip_6320] =		{ 2, 16, 9  },
+	[chip_6440] =		{ 4, 16, 9  },
+	[chip_6480] =		{ 8, 32, 10 },
+};
+
+static struct scsi_host_template mvs_sht = {
+	.module			= THIS_MODULE,
+	.name			= DRV_NAME,
+	.queuecommand		= sas_queuecommand,
+	.target_alloc		= sas_target_alloc,
+	.slave_configure	= mvs_slave_configure,
+	.slave_destroy		= sas_slave_destroy,
+	.scan_finished		= mvs_scan_finished,
+	.scan_start		= mvs_scan_start,
+	.change_queue_depth	= sas_change_queue_depth,
+	.change_queue_type	= sas_change_queue_type,
+	.bios_param		= sas_bios_param,
+	.can_queue		= 1,
+	.cmd_per_lun		= 1,
+	.this_id		= -1,
+	.sg_tablesize		= SG_ALL,
+	.max_sectors		= SCSI_DEFAULT_MAX_SECTORS,
+	.use_clustering		= ENABLE_CLUSTERING,
+	.eh_device_reset_handler	= sas_eh_device_reset_handler,
+	.eh_bus_reset_handler	= sas_eh_bus_reset_handler,
+	.slave_alloc		= sas_slave_alloc,
+	.target_destroy		= sas_target_destroy,
+	.ioctl			= sas_ioctl,
+};
+
+static struct sas_domain_function_template mvs_transport_ops = {
+	.lldd_execute_task	= mvs_task_exec,
+	.lldd_control_phy	= mvs_phy_control,
+	.lldd_abort_task	= mvs_task_abort,
+	.lldd_port_formed	= mvs_port_formed,
+	.lldd_I_T_nexus_reset	= mvs_I_T_nexus_reset,
+};
+
+static void __devinit mvs_phy_init(struct mvs_info *mvi, int phy_id)
+{
+	struct mvs_phy *phy = &mvi->phy[phy_id];
+	struct asd_sas_phy *sas_phy = &phy->sas_phy;
+
+	sas_phy->enabled = (phy_id < mvi->chip->n_phy) ? 1 : 0;
+	sas_phy->class = SAS;
+	sas_phy->iproto = SAS_PROTOCOL_ALL;
+	sas_phy->tproto = 0;
+	sas_phy->type = PHY_TYPE_PHYSICAL;
+	sas_phy->role = PHY_ROLE_INITIATOR;
+	sas_phy->oob_mode = OOB_NOT_CONNECTED;
+	sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
+
+	sas_phy->id = phy_id;
+	sas_phy->sas_addr = &mvi->sas_addr[0];
+	sas_phy->frame_rcvd = &phy->frame_rcvd[0];
+	sas_phy->ha = &mvi->sas;
+	sas_phy->lldd_phy = phy;
+}
+
+static void mvs_free(struct mvs_info *mvi)
+{
+	int i;
+
+	if (!mvi)
+		return;
+
+	for (i = 0; i < MVS_SLOTS; i++) {
+		struct mvs_slot_info *slot = &mvi->slot_info[i];
+
+		if (slot->buf)
+			dma_free_coherent(&mvi->pdev->dev, MVS_SLOT_BUF_SZ,
+					  slot->buf, slot->buf_dma);
+	}
+
+	if (mvi->tx)
+		dma_free_coherent(&mvi->pdev->dev,
+				  sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
+				  mvi->tx, mvi->tx_dma);
+	if (mvi->rx_fis)
+		dma_free_coherent(&mvi->pdev->dev, MVS_RX_FISL_SZ,
+				  mvi->rx_fis, mvi->rx_fis_dma);
+	if (mvi->rx)
+		dma_free_coherent(&mvi->pdev->dev,
+				  sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
+				  mvi->rx, mvi->rx_dma);
+	if (mvi->slot)
+		dma_free_coherent(&mvi->pdev->dev,
+				  sizeof(*mvi->slot) * MVS_SLOTS,
+				  mvi->slot, mvi->slot_dma);
+#ifdef MVS_ENABLE_PERI
+	if (mvi->peri_regs)
+		iounmap(mvi->peri_regs);
+#endif
+	if (mvi->regs)
+		iounmap(mvi->regs);
+	if (mvi->shost)
+		scsi_host_put(mvi->shost);
+	kfree(mvi->sas.sas_port);
+	kfree(mvi->sas.sas_phy);
+	kfree(mvi);
+}
+
+#ifdef MVS_USE_TASKLET
+static void mvs_tasklet(unsigned long data)
+{
+	struct mvs_info *mvi = (struct mvs_info *) data;
+	unsigned long flags;
+
+	spin_lock_irqsave(&mvi->lock, flags);
+
+#ifdef MVS_DISABLE_MSI
+	mvs_int_full(mvi);
+#else
+	mvs_int_rx(mvi, true);
+#endif
+	spin_unlock_irqrestore(&mvi->lock, flags);
+}
+#endif
+
+static irqreturn_t mvs_interrupt(int irq, void *opaque)
+{
+	struct mvs_info *mvi = opaque;
+	void __iomem *regs = mvi->regs;
+	u32 stat;
+
+	stat = mr32(GBL_INT_STAT);
+
+	if (stat == 0 || stat == 0xffffffff)
+		return IRQ_NONE;
+
+	/* clear CMD_CMPLT ASAP */
+	mw32_f(INT_STAT, CINT_DONE);
+
+#ifndef MVS_USE_TASKLET
+	spin_lock(&mvi->lock);
+
+	mvs_int_full(mvi);
+
+	spin_unlock(&mvi->lock);
+#else
+	tasklet_schedule(&mvi->tasklet);
+#endif
+	return IRQ_HANDLED;
+}
+
+static struct mvs_info *__devinit mvs_alloc(struct pci_dev *pdev,
+					    const struct pci_device_id *ent)
+{
+	struct mvs_info *mvi;
+	unsigned long res_start, res_len, res_flag;
+	struct asd_sas_phy **arr_phy;
+	struct asd_sas_port **arr_port;
+	const struct mvs_chip_info *chip = &mvs_chips[ent->driver_data];
+	int i;
+
+	/*
+	 * alloc and init our per-HBA mvs_info struct
+	 */
+
+	mvi = kzalloc(sizeof(*mvi), GFP_KERNEL);
+	if (!mvi)
+		return NULL;
+
+	spin_lock_init(&mvi->lock);
+#ifdef MVS_USE_TASKLET
+	tasklet_init(&mvi->tasklet, mvs_tasklet, (unsigned long)mvi);
+#endif
+	mvi->pdev = pdev;
+	mvi->chip = chip;
+
+	if (pdev->device == 0x6440 && pdev->revision == 0)
+		mvi->flags |= MVF_PHY_PWR_FIX;
+
+	/*
+	 * alloc and init SCSI, SAS glue
+	 */
+
+	mvi->shost = scsi_host_alloc(&mvs_sht, sizeof(void *));
+	if (!mvi->shost)
+		goto err_out;
+
+	arr_phy = kcalloc(MVS_MAX_PHYS, sizeof(void *), GFP_KERNEL);
+	arr_port = kcalloc(MVS_MAX_PHYS, sizeof(void *), GFP_KERNEL);
+	if (!arr_phy || !arr_port)
+		goto err_out;
+
+	for (i = 0; i < MVS_MAX_PHYS; i++) {
+		mvs_phy_init(mvi, i);
+		arr_phy[i] = &mvi->phy[i].sas_phy;
+		arr_port[i] = &mvi->port[i].sas_port;
+		mvi->port[i].taskfileset = MVS_ID_NOT_MAPPED;
+		mvi->port[i].wide_port_phymap = 0;
+		mvi->port[i].port_attached = 0;
+		INIT_LIST_HEAD(&mvi->port[i].list);
+	}
+
+	SHOST_TO_SAS_HA(mvi->shost) = &mvi->sas;
+	mvi->shost->transportt = mvs_stt;
+	mvi->shost->max_id = 21;
+	mvi->shost->max_lun = ~0;
+	mvi->shost->max_channel = 0;
+	mvi->shost->max_cmd_len = 16;
+
+	mvi->sas.sas_ha_name = DRV_NAME;
+	mvi->sas.dev = &pdev->dev;
+	mvi->sas.lldd_module = THIS_MODULE;
+	mvi->sas.sas_addr = &mvi->sas_addr[0];
+	mvi->sas.sas_phy = arr_phy;
+	mvi->sas.sas_port = arr_port;
+	mvi->sas.num_phys = chip->n_phy;
+	mvi->sas.lldd_max_execute_num = 1;
+	mvi->sas.lldd_queue_size = MVS_QUEUE_SIZE;
+	mvi->shost->can_queue = MVS_CAN_QUEUE;
+	mvi->shost->cmd_per_lun = MVS_SLOTS / mvi->sas.num_phys;
+	mvi->sas.lldd_ha = mvi;
+	mvi->sas.core.shost = mvi->shost;
+
+	mvs_tag_init(mvi);
+
+	/*
+	 * ioremap main and peripheral registers
+	 */
+
+#ifdef MVS_ENABLE_PERI
+	res_start = pci_resource_start(pdev, 2);
+	res_len = pci_resource_len(pdev, 2);
+	if (!res_start || !res_len)
+		goto err_out;
+
+	mvi->peri_regs = ioremap_nocache(res_start, res_len);
+	if (!mvi->peri_regs)
+		goto err_out;
+#endif
+
+	res_start = pci_resource_start(pdev, 4);
+	res_len = pci_resource_len(pdev, 4);
+	if (!res_start || !res_len)
+		goto err_out;
+
+	res_flag = pci_resource_flags(pdev, 4);
+	if (res_flag & IORESOURCE_CACHEABLE)
+		mvi->regs = ioremap(res_start, res_len);
+	else
+		mvi->regs = ioremap_nocache(res_start, res_len);
+
+	if (!mvi->regs)
+		goto err_out;
+
+	/*
+	 * alloc and init our DMA areas
+	 */
+
+	mvi->tx = dma_alloc_coherent(&pdev->dev,
+				     sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ,
+				     &mvi->tx_dma, GFP_KERNEL);
+	if (!mvi->tx)
+		goto err_out;
+	memset(mvi->tx, 0, sizeof(*mvi->tx) * MVS_CHIP_SLOT_SZ);
+
+	mvi->rx_fis = dma_alloc_coherent(&pdev->dev, MVS_RX_FISL_SZ,
+					 &mvi->rx_fis_dma, GFP_KERNEL);
+	if (!mvi->rx_fis)
+		goto err_out;
+	memset(mvi->rx_fis, 0, MVS_RX_FISL_SZ);
+
+	mvi->rx = dma_alloc_coherent(&pdev->dev,
+				     sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1),
+				     &mvi->rx_dma, GFP_KERNEL);
+	if (!mvi->rx)
+		goto err_out;
+	memset(mvi->rx, 0, sizeof(*mvi->rx) * (MVS_RX_RING_SZ + 1));
+
+	mvi->rx[0] = cpu_to_le32(0xfff);
+	mvi->rx_cons = 0xfff;
+
+	mvi->slot = dma_alloc_coherent(&pdev->dev,
+				       sizeof(*mvi->slot) * MVS_SLOTS,
+				       &mvi->slot_dma, GFP_KERNEL);
+	if (!mvi->slot)
+		goto err_out;
+	memset(mvi->slot, 0, sizeof(*mvi->slot) * MVS_SLOTS);
+
+	for (i = 0; i < MVS_SLOTS; i++) {
+		struct mvs_slot_info *slot = &mvi->slot_info[i];
+
+		slot->buf = dma_alloc_coherent(&pdev->dev, MVS_SLOT_BUF_SZ,
+					       &slot->buf_dma, GFP_KERNEL);
+		if (!slot->buf)
+			goto err_out;
+		memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
+	}
+
+	/* finally, read NVRAM to get our SAS address */
+	if (mvs_nvram_read(mvi, NVR_SAS_ADDR, &mvi->sas_addr, 8))
+		goto err_out;
+	return mvi;
+
+err_out:
+	mvs_free(mvi);
+	return NULL;
+}
+
+/* move to PCI layer or libata core? */
+static int pci_go_64(struct pci_dev *pdev)
+{
+	int rc;
+
+	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+		if (rc) {
+			rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+			if (rc) {
+				dev_printk(KERN_ERR, &pdev->dev,
+					   "64-bit DMA enable failed\n");
+				return rc;
+			}
+		}
+	} else {
+		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (rc) {
+			dev_printk(KERN_ERR, &pdev->dev,
+				   "32-bit DMA enable failed\n");
+			return rc;
+		}
+		rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (rc) {
+			dev_printk(KERN_ERR, &pdev->dev,
+				   "32-bit consistent DMA enable failed\n");
+			return rc;
+		}
+	}
+
+	return rc;
+}
+
+static int __devinit mvs_pci_init(struct pci_dev *pdev,
+				  const struct pci_device_id *ent)
+{
+	int rc;
+	struct mvs_info *mvi;
+	irq_handler_t irq_handler = mvs_interrupt;
+
+	rc = pci_enable_device(pdev);
+	if (rc)
+		return rc;
+
+	pci_set_master(pdev);
+
+	rc = pci_request_regions(pdev, DRV_NAME);
+	if (rc)
+		goto err_out_disable;
+
+	rc = pci_go_64(pdev);
+	if (rc)
+		goto err_out_regions;
+
+	mvi = mvs_alloc(pdev, ent);
+	if (!mvi) {
+		rc = -ENOMEM;
+		goto err_out_regions;
+	}
+
+	rc = mvs_hw_init(mvi);
+	if (rc)
+		goto err_out_mvi;
+
+#ifndef MVS_DISABLE_MSI
+	if (!pci_enable_msi(pdev)) {
+		u32 tmp;
+		void __iomem *regs = mvi->regs;
+		mvi->flags |= MVF_MSI;
+		irq_handler = mvs_msi_interrupt;
+		tmp = mr32(PCS);
+		mw32(PCS, tmp | PCS_SELF_CLEAR);
+	}
+#endif
+
+	rc = request_irq(pdev->irq, irq_handler, IRQF_SHARED, DRV_NAME, mvi);
+	if (rc)
+		goto err_out_msi;
+
+	rc = scsi_add_host(mvi->shost, &pdev->dev);
+	if (rc)
+		goto err_out_irq;
+
+	rc = sas_register_ha(&mvi->sas);
+	if (rc)
+		goto err_out_shost;
+
+	pci_set_drvdata(pdev, mvi);
+
+	mvs_print_info(mvi);
+
+	mvs_hba_interrupt_enable(mvi);
+
+	scsi_scan_host(mvi->shost);
+
+	return 0;
+
+err_out_shost:
+	scsi_remove_host(mvi->shost);
+err_out_irq:
+	free_irq(pdev->irq, mvi);
+err_out_msi:
+	if (mvi->flags |= MVF_MSI)
+		pci_disable_msi(pdev);
+err_out_mvi:
+	mvs_free(mvi);
+err_out_regions:
+	pci_release_regions(pdev);
+err_out_disable:
+	pci_disable_device(pdev);
+	return rc;
+}
+
+static void __devexit mvs_pci_remove(struct pci_dev *pdev)
+{
+	struct mvs_info *mvi = pci_get_drvdata(pdev);
+
+	pci_set_drvdata(pdev, NULL);
+
+	if (mvi) {
+		sas_unregister_ha(&mvi->sas);
+		mvs_hba_interrupt_disable(mvi);
+		sas_remove_host(mvi->shost);
+		scsi_remove_host(mvi->shost);
+
+		free_irq(pdev->irq, mvi);
+		if (mvi->flags & MVF_MSI)
+			pci_disable_msi(pdev);
+		mvs_free(mvi);
+		pci_release_regions(pdev);
+	}
+	pci_disable_device(pdev);
+}
+
+static struct pci_device_id __devinitdata mvs_pci_table[] = {
+	{ PCI_VDEVICE(MARVELL, 0x6320), chip_6320 },
+	{ PCI_VDEVICE(MARVELL, 0x6340), chip_6440 },
+	{
+		.vendor 	= PCI_VENDOR_ID_MARVELL,
+		.device 	= 0x6440,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= 0x6480,
+		.class		= 0,
+		.class_mask	= 0,
+		.driver_data	= chip_6480,
+	},
+	{ PCI_VDEVICE(MARVELL, 0x6440), chip_6440 },
+	{ PCI_VDEVICE(MARVELL, 0x6480), chip_6480 },
+
+	{ }	/* terminate list */
+};
+
+static struct pci_driver mvs_pci_driver = {
+	.name		= DRV_NAME,
+	.id_table	= mvs_pci_table,
+	.probe		= mvs_pci_init,
+	.remove		= __devexit_p(mvs_pci_remove),
+};
+
+static int __init mvs_init(void)
+{
+	int rc;
+
+	mvs_stt = sas_domain_attach_transport(&mvs_transport_ops);
+	if (!mvs_stt)
+		return -ENOMEM;
+
+	rc = pci_register_driver(&mvs_pci_driver);
+	if (rc)
+		goto err_out;
+
+	return 0;
+
+err_out:
+	sas_release_transport(mvs_stt);
+	return rc;
+}
+
+static void __exit mvs_exit(void)
+{
+	pci_unregister_driver(&mvs_pci_driver);
+	sas_release_transport(mvs_stt);
+}
+
+module_init(mvs_init);
+module_exit(mvs_exit);
+
+MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
+MODULE_DESCRIPTION("Marvell 88SE6440 SAS/SATA controller driver");
+MODULE_VERSION(DRV_VERSION);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(pci, mvs_pci_table);