Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 412 insertions, 0 deletions

diff --git a/drivers/parport/parport_sunbpp.c b/drivers/parport/parport_sunbpp.c
new file mode 100644
index 0000000..36a1556
--- /dev/null
+++ b/drivers/parport/parport_sunbpp.c
@@ -0,0 +1,412 @@
+/* $Id: parport_sunbpp.c,v 1.12 2001/05/26 03:01:42 davem Exp $
+ * Parallel-port routines for Sun architecture
+ * 
+ * Author: Derrick J. Brashear <shadow@dementia.org>
+ *
+ * based on work by:
+ *          Phil Blundell <philb@gnu.org>
+ *          Tim Waugh <tim@cyberelk.demon.co.uk>
+ *	    Jose Renau <renau@acm.org>
+ *          David Campbell <campbell@tirian.che.curtin.edu.au>
+ *          Grant Guenther <grant@torque.net>
+ *          Eddie C. Dost <ecd@skynet.be>
+ *          Stephen Williams (steve@icarus.com)
+ *          Gus Baldauf (gbaldauf@ix.netcom.com)
+ *          Peter Zaitcev
+ *          Tom Dyas
+ */
+
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+
+#include <linux/parport.h>
+
+#include <asm/ptrace.h>
+#include <linux/interrupt.h>
+
+#include <asm/io.h>
+#include <asm/oplib.h>           /* OpenProm Library */
+#include <asm/sbus.h>
+#include <asm/dma.h>             /* BPP uses LSI 64854 for DMA */
+#include <asm/irq.h>
+#include <asm/sunbpp.h>
+
+#undef __SUNBPP_DEBUG
+#ifdef __SUNBPP_DEBUG
+#define dprintk(x) printk x
+#else
+#define dprintk(x)
+#endif
+
+static irqreturn_t parport_sunbpp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	parport_generic_irq(irq, (struct parport *) dev_id, regs);
+	return IRQ_HANDLED;
+}
+
+static void parport_sunbpp_disable_irq(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	u32 tmp;
+
+	tmp = sbus_readl(&regs->p_csr);
+	tmp &= ~DMA_INT_ENAB;
+	sbus_writel(tmp, &regs->p_csr);
+}
+
+static void parport_sunbpp_enable_irq(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	u32 tmp;
+
+	tmp = sbus_readl(&regs->p_csr);
+	tmp |= DMA_INT_ENAB;
+	sbus_writel(tmp, &regs->p_csr);
+}
+
+static void parport_sunbpp_write_data(struct parport *p, unsigned char d)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+
+	sbus_writeb(d, &regs->p_dr);
+	dprintk((KERN_DEBUG "wrote 0x%x\n", d));
+}
+
+static unsigned char parport_sunbpp_read_data(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+
+	return sbus_readb(&regs->p_dr);
+}
+
+#if 0
+static void control_pc_to_sunbpp(struct parport *p, unsigned char status)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+	unsigned char value_or = sbus_readb(&regs->p_or);
+
+	if (status & PARPORT_CONTROL_STROBE) 
+		value_tcr |= P_TCR_DS;
+	if (status & PARPORT_CONTROL_AUTOFD) 
+		value_or |= P_OR_AFXN;
+	if (status & PARPORT_CONTROL_INIT) 
+		value_or |= P_OR_INIT;
+	if (status & PARPORT_CONTROL_SELECT) 
+		value_or |= P_OR_SLCT_IN;
+
+	sbus_writeb(value_or, &regs->p_or);
+	sbus_writeb(value_tcr, &regs->p_tcr);
+}
+#endif
+
+static unsigned char status_sunbpp_to_pc(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char bits = 0;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+	unsigned char value_ir = sbus_readb(&regs->p_ir);
+
+	if (!(value_ir & P_IR_ERR))
+		bits |= PARPORT_STATUS_ERROR;
+	if (!(value_ir & P_IR_SLCT))
+		bits |= PARPORT_STATUS_SELECT;
+	if (!(value_ir & P_IR_PE))
+		bits |= PARPORT_STATUS_PAPEROUT;
+	if (value_tcr & P_TCR_ACK)
+		bits |= PARPORT_STATUS_ACK;
+	if (!(value_tcr & P_TCR_BUSY))
+		bits |= PARPORT_STATUS_BUSY;
+
+	dprintk((KERN_DEBUG "tcr 0x%x ir 0x%x\n", regs->p_tcr, regs->p_ir));
+	dprintk((KERN_DEBUG "read status 0x%x\n", bits));
+	return bits;
+}
+
+static unsigned char control_sunbpp_to_pc(struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char bits = 0;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+	unsigned char value_or = sbus_readb(&regs->p_or);
+
+	if (!(value_tcr & P_TCR_DS))
+		bits |= PARPORT_CONTROL_STROBE;
+	if (!(value_or & P_OR_AFXN))
+		bits |= PARPORT_CONTROL_AUTOFD;
+	if (!(value_or & P_OR_INIT))
+		bits |= PARPORT_CONTROL_INIT;
+	if (value_or & P_OR_SLCT_IN)
+		bits |= PARPORT_CONTROL_SELECT;
+
+	dprintk((KERN_DEBUG "tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+	dprintk((KERN_DEBUG "read control 0x%x\n", bits));
+	return bits;
+}
+
+static unsigned char parport_sunbpp_read_control(struct parport *p)
+{
+	return control_sunbpp_to_pc(p);
+}
+
+static unsigned char parport_sunbpp_frob_control(struct parport *p,
+						 unsigned char mask,
+						 unsigned char val)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+	unsigned char value_or = sbus_readb(&regs->p_or);
+
+	dprintk((KERN_DEBUG "frob1: tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+	if (mask & PARPORT_CONTROL_STROBE) {
+		if (val & PARPORT_CONTROL_STROBE) {
+			value_tcr &= ~P_TCR_DS;
+		} else {
+			value_tcr |= P_TCR_DS;
+		}
+	}
+	if (mask & PARPORT_CONTROL_AUTOFD) {
+		if (val & PARPORT_CONTROL_AUTOFD) {
+			value_or &= ~P_OR_AFXN;
+		} else {
+			value_or |= P_OR_AFXN;
+		}
+	}
+	if (mask & PARPORT_CONTROL_INIT) {
+		if (val & PARPORT_CONTROL_INIT) {
+			value_or &= ~P_OR_INIT;
+		} else {
+			value_or |= P_OR_INIT;
+		}
+	}
+	if (mask & PARPORT_CONTROL_SELECT) {
+		if (val & PARPORT_CONTROL_SELECT) {
+			value_or |= P_OR_SLCT_IN;
+		} else {
+			value_or &= ~P_OR_SLCT_IN;
+		}
+	}
+
+	sbus_writeb(value_or, &regs->p_or);
+	sbus_writeb(value_tcr, &regs->p_tcr);
+	dprintk((KERN_DEBUG "frob2: tcr 0x%x or 0x%x\n", regs->p_tcr, regs->p_or));
+	return parport_sunbpp_read_control(p);
+}
+
+static void parport_sunbpp_write_control(struct parport *p, unsigned char d)
+{
+	const unsigned char wm = (PARPORT_CONTROL_STROBE |
+				  PARPORT_CONTROL_AUTOFD |
+				  PARPORT_CONTROL_INIT |
+				  PARPORT_CONTROL_SELECT);
+
+	parport_sunbpp_frob_control (p, wm, d & wm);
+}
+
+static unsigned char parport_sunbpp_read_status(struct parport *p)
+{
+	return status_sunbpp_to_pc(p);
+}
+
+static void parport_sunbpp_data_forward (struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	unsigned char value_tcr = sbus_readb(&regs->p_tcr);
+
+	dprintk((KERN_DEBUG "forward\n"));
+	value_tcr &= ~P_TCR_DIR;
+	sbus_writeb(value_tcr, &regs->p_tcr);
+}
+
+static void parport_sunbpp_data_reverse (struct parport *p)
+{
+	struct bpp_regs __iomem *regs = (struct bpp_regs __iomem *)p->base;
+	u8 val = sbus_readb(&regs->p_tcr);
+
+	dprintk((KERN_DEBUG "reverse\n"));
+	val |= P_TCR_DIR;
+	sbus_writeb(val, &regs->p_tcr);
+}
+
+static void parport_sunbpp_init_state(struct pardevice *dev, struct parport_state *s)
+{
+	s->u.pc.ctr = 0xc;
+	s->u.pc.ecr = 0x0;
+}
+
+static void parport_sunbpp_save_state(struct parport *p, struct parport_state *s)
+{
+	s->u.pc.ctr = parport_sunbpp_read_control(p);
+}
+
+static void parport_sunbpp_restore_state(struct parport *p, struct parport_state *s)
+{
+	parport_sunbpp_write_control(p, s->u.pc.ctr);
+}
+
+static struct parport_operations parport_sunbpp_ops = 
+{
+	.write_data	= parport_sunbpp_write_data,
+	.read_data	= parport_sunbpp_read_data,
+
+	.write_control	= parport_sunbpp_write_control,
+	.read_control	= parport_sunbpp_read_control,
+	.frob_control	= parport_sunbpp_frob_control,
+
+	.read_status	= parport_sunbpp_read_status,
+
+	.enable_irq	= parport_sunbpp_enable_irq,
+	.disable_irq	= parport_sunbpp_disable_irq,
+
+	.data_forward	= parport_sunbpp_data_forward,
+	.data_reverse	= parport_sunbpp_data_reverse,
+
+	.init_state	= parport_sunbpp_init_state,
+	.save_state	= parport_sunbpp_save_state,
+	.restore_state	= parport_sunbpp_restore_state,
+
+	.epp_write_data	= parport_ieee1284_epp_write_data,
+	.epp_read_data	= parport_ieee1284_epp_read_data,
+	.epp_write_addr	= parport_ieee1284_epp_write_addr,
+	.epp_read_addr	= parport_ieee1284_epp_read_addr,
+
+	.ecp_write_data	= parport_ieee1284_ecp_write_data,
+	.ecp_read_data	= parport_ieee1284_ecp_read_data,
+	.ecp_write_addr	= parport_ieee1284_ecp_write_addr,
+
+	.compat_write_data	= parport_ieee1284_write_compat,
+	.nibble_read_data	= parport_ieee1284_read_nibble,
+	.byte_read_data		= parport_ieee1284_read_byte,
+
+	.owner		= THIS_MODULE,
+};
+
+typedef struct {
+	struct list_head list;
+	struct parport *port;
+} Node;
+/* no locks, everything's serialized */
+static LIST_HEAD(port_list);
+
+static int __init init_one_port(struct sbus_dev *sdev)
+{
+	struct parport *p;
+	/* at least in theory there may be a "we don't dma" case */
+	struct parport_operations *ops;
+	void __iomem *base;
+	int irq, dma, err = 0, size;
+	struct bpp_regs __iomem *regs;
+	unsigned char value_tcr;
+	Node *node;
+
+	dprintk((KERN_DEBUG "init_one_port(%p): ranges, alloc_io, ", sdev));
+	node = kmalloc(sizeof(Node), GFP_KERNEL);
+	if (!node)
+		goto out0;
+
+	irq = sdev->irqs[0];
+	base = sbus_ioremap(&sdev->resource[0], 0,
+			    sdev->reg_addrs[0].reg_size, 
+			    "sunbpp");
+	if (!base)
+		goto out1;
+
+	size = sdev->reg_addrs[0].reg_size;
+	dma = PARPORT_DMA_NONE;
+
+	dprintk(("alloc(ppops), "));
+	ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL);
+        if (!ops)
+		goto out2;
+
+        memcpy (ops, &parport_sunbpp_ops, sizeof (struct parport_operations));
+
+	dprintk(("register_port\n"));
+	if (!(p = parport_register_port((unsigned long)base, irq, dma, ops)))
+		goto out3;
+
+	p->size = size;
+
+	dprintk((KERN_DEBUG "init_one_port: request_irq(%08x:%p:%x:%s:%p) ",
+		p->irq, parport_sunbpp_interrupt, SA_SHIRQ, p->name, p));
+	if ((err = request_irq(p->irq, parport_sunbpp_interrupt,
+			       SA_SHIRQ, p->name, p)) != 0) {
+		dprintk(("ERROR %d\n", err));
+		goto out4;
+	}
+	dprintk(("OK\n"));
+	parport_sunbpp_enable_irq(p);
+
+	regs = (struct bpp_regs __iomem *)p->base;
+	dprintk((KERN_DEBUG "forward\n"));
+	value_tcr = sbus_readb(&regs->p_tcr);
+	value_tcr &= ~P_TCR_DIR;
+	sbus_writeb(value_tcr, &regs->p_tcr);
+
+	printk(KERN_INFO "%s: sunbpp at 0x%lx\n", p->name, p->base);
+	node->port = p;
+	list_add(&node->list, &port_list);
+	parport_announce_port (p);
+
+	return 1;
+
+out4:
+	parport_put_port(p);
+out3:
+	kfree(ops);
+out2:
+	sbus_iounmap(base, size);
+out1:
+	kfree(node);
+out0:
+	return err;
+}
+
+static int __init parport_sunbpp_init(void)
+{
+        struct sbus_bus *sbus;
+        struct sbus_dev *sdev;
+	int count = 0;
+
+	for_each_sbus(sbus) {
+		for_each_sbusdev(sdev, sbus) {
+			if (!strcmp(sdev->prom_name, "SUNW,bpp"))
+				count += init_one_port(sdev);
+		}
+	}
+	return count ? 0 : -ENODEV;
+}
+
+static void __exit parport_sunbpp_exit(void)
+{
+	while (!list_empty(&port_list)) {
+		Node *node = list_entry(port_list.next, Node, list);
+		struct parport *p = node->port;
+		struct parport_operations *ops = p->ops;
+		parport_remove_port(p);
+
+		if (p->irq != PARPORT_IRQ_NONE) {
+			parport_sunbpp_disable_irq(p);
+			free_irq(p->irq, p);
+		}
+		sbus_iounmap((void __iomem *)p->base, p->size);
+		parport_put_port(p);
+		kfree (ops);
+		list_del(&node->list);
+		kfree (node);
+	}
+}
+
+MODULE_AUTHOR("Derrick J Brashear");
+MODULE_DESCRIPTION("Parport Driver for Sparc bidirectional Port");
+MODULE_SUPPORTED_DEVICE("Sparc Bidirectional Parallel Port");
+MODULE_LICENSE("GPL");
+
+module_init(parport_sunbpp_init)
+module_exit(parport_sunbpp_exit)