Linux-2.6.12-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!
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(®s->p_csr);
+ tmp &= ~DMA_INT_ENAB;
+ sbus_writel(tmp, ®s->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(®s->p_csr);
+ tmp |= DMA_INT_ENAB;
+ sbus_writel(tmp, ®s->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, ®s->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(®s->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(®s->p_tcr);
+ unsigned char value_or = sbus_readb(®s->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, ®s->p_or);
+ sbus_writeb(value_tcr, ®s->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(®s->p_tcr);
+ unsigned char value_ir = sbus_readb(®s->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(®s->p_tcr);
+ unsigned char value_or = sbus_readb(®s->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(®s->p_tcr);
+ unsigned char value_or = sbus_readb(®s->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, ®s->p_or);
+ sbus_writeb(value_tcr, ®s->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(®s->p_tcr);
+
+ dprintk((KERN_DEBUG "forward\n"));
+ value_tcr &= ~P_TCR_DIR;
+ sbus_writeb(value_tcr, ®s->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(®s->p_tcr);
+
+ dprintk((KERN_DEBUG "reverse\n"));
+ val |= P_TCR_DIR;
+ sbus_writeb(val, ®s->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(®s->p_tcr);
+ value_tcr &= ~P_TCR_DIR;
+ sbus_writeb(value_tcr, ®s->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)