drivers: serial: jsm: Enable support for Digi Classic adapters

This commit enables support for the Digi Classic adapters line in the
jsm driver. This means changes in:
	- device probing code
	- device cleanup code
	- driver description (Kconfig)

The init/cleanup code is based on the staging/dgnc driver.

Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 126 insertions, 31 deletions

diff --git a/drivers/tty/serial/jsm/jsm.h b/drivers/tty/serial/jsm/jsm.h
index 309428273571..662523d66704 100644
--- a/drivers/tty/serial/jsm/jsm.h
+++ b/drivers/tty/serial/jsm/jsm.h
@@ -68,6 +68,10 @@ do {								\
 #define MAX_STOPS_SENT	5
 
 /* Board ids */
+#define PCI_DEVICE_ID_CLASSIC_4		0x0028
+#define PCI_DEVICE_ID_CLASSIC_8		0x0029
+#define PCI_DEVICE_ID_CLASSIC_4_422	0x00D0
+#define PCI_DEVICE_ID_CLASSIC_8_422	0x00D1
 #define PCI_DEVICE_ID_NEO_4             0x00B0
 #define PCI_DEVICE_ID_NEO_1_422         0x00CC
 #define PCI_DEVICE_ID_NEO_1_422_485     0x00CD
diff --git a/drivers/tty/serial/jsm/jsm_driver.c b/drivers/tty/serial/jsm/jsm_driver.c
index d2885a7bb090..0927ddf3d071 100644
--- a/drivers/tty/serial/jsm/jsm_driver.c
+++ b/drivers/tty/serial/jsm/jsm_driver.c
@@ -31,8 +31,7 @@
 #include "jsm.h"
 
 MODULE_AUTHOR("Digi International, http://www.digi.com");
-MODULE_DESCRIPTION("Driver for the Digi International "
-		   "Neo PCI based product line");
+MODULE_DESCRIPTION("Driver for the Digi International Neo and Classic PCI based product line");
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("jsm");
 
@@ -50,7 +49,7 @@ struct uart_driver jsm_uart_driver = {
 };
 
 static pci_ers_result_t jsm_io_error_detected(struct pci_dev *pdev,
-                                       pci_channel_state_t state);
+					pci_channel_state_t state);
 static pci_ers_result_t jsm_io_slot_reset(struct pci_dev *pdev);
 static void jsm_io_resume(struct pci_dev *pdev);
 
@@ -68,7 +67,7 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	int rc = 0;
 	struct jsm_board *brd;
-	static int adapter_count = 0;
+	static int adapter_count;
 
 	rc = pci_enable_device(pdev);
 	if (rc) {
@@ -82,10 +81,8 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		goto out_disable_device;
 	}
 
-	brd = kzalloc(sizeof(struct jsm_board), GFP_KERNEL);
+	brd = kzalloc(sizeof(*brd), GFP_KERNEL);
 	if (!brd) {
-		dev_err(&pdev->dev,
-			"memory allocation for board structure failed\n");
 		rc = -ENOMEM;
 		goto out_release_regions;
 	}
@@ -95,7 +92,6 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	brd->pci_dev = pdev;
 
 	switch (pdev->device) {
-
 	case PCI_DEVICE_ID_NEO_2DB9:
 	case PCI_DEVICE_ID_NEO_2DB9PRI:
 	case PCI_DEVICE_ID_NEO_2RJ45:
@@ -104,6 +100,8 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		brd->maxports = 2;
 		break;
 
+	case PCI_DEVICE_ID_CLASSIC_4:
+	case PCI_DEVICE_ID_CLASSIC_4_422:
 	case PCI_DEVICE_ID_NEO_4:
 	case PCIE_DEVICE_ID_NEO_4:
 	case PCIE_DEVICE_ID_NEO_4RJ45:
@@ -111,6 +109,8 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		brd->maxports = 4;
 		break;
 
+	case PCI_DEVICE_ID_CLASSIC_8:
+	case PCI_DEVICE_ID_CLASSIC_8_422:
 	case PCI_DEVICE_ID_DIGI_NEO_8:
 	case PCIE_DEVICE_ID_NEO_8:
 	case PCIE_DEVICE_ID_NEO_8RJ45:
@@ -129,36 +129,109 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	brd->irq = pdev->irq;
 
-	jsm_dbg(INIT, &brd->pci_dev, "jsm_found_board - NEO adapter\n");
+	switch (pdev->device) {
+	case PCI_DEVICE_ID_CLASSIC_4:
+	case PCI_DEVICE_ID_CLASSIC_4_422:
+	case PCI_DEVICE_ID_CLASSIC_8:
+	case PCI_DEVICE_ID_CLASSIC_8_422:
+
+		jsm_dbg(INIT, &brd->pci_dev,
+			"jsm_found_board - Classic adapter\n");
+
+		/*
+		 * For PCI ClassicBoards
+		 * PCI Local Address (.i.e. "resource" number) space
+		 * 0	PLX Memory Mapped Config
+		 * 1	PLX I/O Mapped Config
+		 * 2	I/O Mapped UARTs and Status
+		 * 3	Memory Mapped VPD
+		 * 4	Memory Mapped UARTs and Status
+		 */
+
+		/* Get the PCI Base Address Registers */
+		brd->membase = pci_resource_start(pdev, 4);
+		brd->membase_end = pci_resource_end(pdev, 4);
+
+		if (brd->membase & 0x1)
+			brd->membase &= ~0x3;
+		else
+			brd->membase &= ~0xF;
+
+		brd->iobase = pci_resource_start(pdev, 1);
+		brd->iobase_end = pci_resource_end(pdev, 1);
+		brd->iobase = ((unsigned int)(brd->iobase)) & 0xFFFE;
+
+		/* Assign the board_ops struct */
+		brd->bd_ops = &jsm_cls_ops;
+
+		brd->bd_uart_offset = 0x8;
+		brd->bd_dividend = 921600;
+
+		brd->re_map_membase = ioremap(brd->membase,
+						pci_resource_len(pdev, 4));
+		if (!brd->re_map_membase) {
+			dev_err(&pdev->dev,
+				"Card has no PCI Memory resources, failing board.\n");
+			rc = -ENOMEM;
+			goto out_kfree_brd;
+		}
 
-	/* get the PCI Base Address Registers */
-	brd->membase	= pci_resource_start(pdev, 0);
-	brd->membase_end = pci_resource_end(pdev, 0);
+		/*
+		 * Enable Local Interrupt 1			(0x1),
+		 * Local Interrupt 1 Polarity Active high	(0x2),
+		 * Enable PCI interrupt				(0x43)
+		 */
+		outb(0x43, brd->iobase + 0x4c);
 
-	if (brd->membase & 1)
-		brd->membase &= ~3;
-	else
-		brd->membase &= ~15;
+		break;
 
-	/* Assign the board_ops struct */
-	brd->bd_ops = &jsm_neo_ops;
+	case PCI_DEVICE_ID_NEO_2DB9:
+	case PCI_DEVICE_ID_NEO_2DB9PRI:
+	case PCI_DEVICE_ID_NEO_2RJ45:
+	case PCI_DEVICE_ID_NEO_2RJ45PRI:
+	case PCI_DEVICE_ID_NEO_2_422_485:
+	case PCI_DEVICE_ID_NEO_4:
+	case PCIE_DEVICE_ID_NEO_4:
+	case PCIE_DEVICE_ID_NEO_4RJ45:
+	case PCIE_DEVICE_ID_NEO_4_IBM:
+	case PCI_DEVICE_ID_DIGI_NEO_8:
+	case PCIE_DEVICE_ID_NEO_8:
+	case PCIE_DEVICE_ID_NEO_8RJ45:
 
-	brd->bd_uart_offset = 0x200;
-	brd->bd_dividend = 921600;
+		jsm_dbg(INIT, &brd->pci_dev, "jsm_found_board - NEO adapter\n");
 
-	brd->re_map_membase = ioremap(brd->membase, pci_resource_len(pdev, 0));
-	if (!brd->re_map_membase) {
-		dev_err(&pdev->dev,
-			"card has no PCI Memory resources, "
-			"failing board.\n");
-		rc = -ENOMEM;
-		goto out_kfree_brd;
+		/* get the PCI Base Address Registers */
+		brd->membase	= pci_resource_start(pdev, 0);
+		brd->membase_end = pci_resource_end(pdev, 0);
+
+		if (brd->membase & 1)
+			brd->membase &= ~0x3;
+		else
+			brd->membase &= ~0xF;
+
+		/* Assign the board_ops struct */
+		brd->bd_ops = &jsm_neo_ops;
+
+		brd->bd_uart_offset = 0x200;
+		brd->bd_dividend = 921600;
+
+		brd->re_map_membase = ioremap(brd->membase,
+						pci_resource_len(pdev, 0));
+		if (!brd->re_map_membase) {
+			dev_err(&pdev->dev,
+				"Card has no PCI Memory resources, failing board.\n");
+			rc = -ENOMEM;
+			goto out_kfree_brd;
+		}
+
+		break;
+	default:
+		return -ENXIO;
 	}
 
-	rc = request_irq(brd->irq, brd->bd_ops->intr,
-			IRQF_SHARED, "JSM", brd);
+	rc = request_irq(brd->irq, brd->bd_ops->intr, IRQF_SHARED, "JSM", brd);
 	if (rc) {
-		printk(KERN_WARNING "Failed to hook IRQ %d\n",brd->irq);
+		dev_warn(&pdev->dev, "Failed to hook IRQ %d\n", brd->irq);
 		goto out_iounmap;
 	}
 
@@ -178,7 +251,7 @@ static int jsm_probe_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 	}
 
 	/* Log the information about the board */
-	dev_info(&pdev->dev, "board %d: Digi Neo (rev %d), irq %d\n",
+	dev_info(&pdev->dev, "board %d: Digi Classic/Neo (rev %d), irq %d\n",
 			adapter_count, brd->rev, brd->irq);
 
 	pci_set_drvdata(pdev, brd);
@@ -205,6 +278,18 @@ static void jsm_remove_one(struct pci_dev *pdev)
 	struct jsm_board *brd = pci_get_drvdata(pdev);
 	int i = 0;
 
+	switch (pdev->device) {
+	case PCI_DEVICE_ID_CLASSIC_4:
+	case PCI_DEVICE_ID_CLASSIC_4_422:
+	case PCI_DEVICE_ID_CLASSIC_8:
+	case PCI_DEVICE_ID_CLASSIC_8_422:
+		/* Tell card not to interrupt anymore. */
+		outb(0x0, brd->iobase + 0x4c);
+		break;
+	default:
+		break;
+	}
+
 	jsm_remove_uart_port(brd);
 
 	free_irq(brd->irq, brd);
@@ -239,6 +324,10 @@ static struct pci_device_id jsm_pci_tbl[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4), 0, 0, 11 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_4RJ45), 0, 0, 12 },
 	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCIE_DEVICE_ID_NEO_8RJ45), 0, 0, 13 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4), 0, 0, 14 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_4_422), 0, 0, 15 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8), 0, 0, 16 },
+	{ PCI_DEVICE(PCI_VENDOR_ID_DIGI, PCI_DEVICE_ID_CLASSIC_8_422), 0, 0, 17 },
 	{ 0, }
 };
 MODULE_DEVICE_TABLE(pci, jsm_pci_tbl);
diff --git a/drivers/tty/serial/jsm/jsm_tty.c b/drivers/tty/serial/jsm/jsm_tty.c
index 8814680630a4..4259e5af8467 100644
--- a/drivers/tty/serial/jsm/jsm_tty.c
+++ b/drivers/tty/serial/jsm/jsm_tty.c
@@ -425,6 +425,8 @@ int jsm_tty_init(struct jsm_board *brd)
 
 		if (brd->bd_uart_offset == 0x200)
 			ch->ch_neo_uart =  vaddr + (brd->bd_uart_offset * i);
+		else
+			ch->ch_cls_uart =  vaddr + (brd->bd_uart_offset * i);
 
 		ch->ch_bd = brd;
 		ch->ch_portnum = i;