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/include/linux/parport_pc.h b/include/linux/parport_pc.h
new file mode 100644
index 0000000..7825c76
--- /dev/null
+++ b/include/linux/parport_pc.h
@@ -0,0 +1,238 @@
+#ifndef __LINUX_PARPORT_PC_H
+#define __LINUX_PARPORT_PC_H
+
+#include <asm/io.h>
+
+/* --- register definitions ------------------------------- */
+
+#define ECONTROL(p) ((p)->base_hi + 0x2)
+#define CONFIGB(p) ((p)->base_hi + 0x1)
+#define CONFIGA(p) ((p)->base_hi + 0x0)
+#define FIFO(p) ((p)->base_hi + 0x0)
+#define EPPDATA(p) ((p)->base + 0x4)
+#define EPPADDR(p) ((p)->base + 0x3)
+#define CONTROL(p) ((p)->base + 0x2)
+#define STATUS(p) ((p)->base + 0x1)
+#define DATA(p) ((p)->base + 0x0)
+
+struct parport_pc_private {
+ /* Contents of CTR. */
+ unsigned char ctr;
+
+ /* Bitmask of writable CTR bits. */
+ unsigned char ctr_writable;
+
+ /* Whether or not there's an ECR. */
+ int ecr;
+
+ /* Number of PWords that FIFO will hold. */
+ int fifo_depth;
+
+ /* Number of bytes per portword. */
+ int pword;
+
+ /* Not used yet. */
+ int readIntrThreshold;
+ int writeIntrThreshold;
+
+ /* buffer suitable for DMA, if DMA enabled */
+ char *dma_buf;
+ dma_addr_t dma_handle;
+ struct pci_dev *dev;
+ struct list_head list;
+ struct parport *port;
+};
+
+struct parport_pc_via_data
+{
+ /* ISA PnP IRQ routing register 1 */
+ u8 via_pci_parport_irq_reg;
+ /* ISA PnP DMA request routing register */
+ u8 via_pci_parport_dma_reg;
+ /* Register and value to enable SuperIO configuration access */
+ u8 via_pci_superio_config_reg;
+ u8 via_pci_superio_config_data;
+ /* SuperIO function register number */
+ u8 viacfg_function;
+ /* parallel port control register number */
+ u8 viacfg_parport_control;
+ /* Parallel port base address register */
+ u8 viacfg_parport_base;
+};
+
+static __inline__ void parport_pc_write_data(struct parport *p, unsigned char d)
+{
+#ifdef DEBUG_PARPORT
+ printk (KERN_DEBUG "parport_pc_write_data(%p,0x%02x)\n", p, d);
+#endif
+ outb(d, DATA(p));
+}
+
+static __inline__ unsigned char parport_pc_read_data(struct parport *p)
+{
+ unsigned char val = inb (DATA (p));
+#ifdef DEBUG_PARPORT
+ printk (KERN_DEBUG "parport_pc_read_data(%p) = 0x%02x\n",
+ p, val);
+#endif
+ return val;
+}
+
+#ifdef DEBUG_PARPORT
+extern __inline__ void dump_parport_state (char *str, struct parport *p)
+{
+ /* here's hoping that reading these ports won't side-effect anything underneath */
+ unsigned char ecr = inb (ECONTROL (p));
+ unsigned char dcr = inb (CONTROL (p));
+ unsigned char dsr = inb (STATUS (p));
+ static char *ecr_modes[] = {"SPP", "PS2", "PPFIFO", "ECP", "xXx", "yYy", "TST", "CFG"};
+ const struct parport_pc_private *priv = (parport_pc_private *)p->physport->private_data;
+ int i;
+
+ printk (KERN_DEBUG "*** parport state (%s): ecr=[%s", str, ecr_modes[(ecr & 0xe0) >> 5]);
+ if (ecr & 0x10) printk (",nErrIntrEn");
+ if (ecr & 0x08) printk (",dmaEn");
+ if (ecr & 0x04) printk (",serviceIntr");
+ if (ecr & 0x02) printk (",f_full");
+ if (ecr & 0x01) printk (",f_empty");
+ for (i=0; i<2; i++) {
+ printk ("] dcr(%s)=[", i ? "soft" : "hard");
+ dcr = i ? priv->ctr : inb (CONTROL (p));
+
+ if (dcr & 0x20) {
+ printk ("rev");
+ } else {
+ printk ("fwd");
+ }
+ if (dcr & 0x10) printk (",ackIntEn");
+ if (!(dcr & 0x08)) printk (",N-SELECT-IN");
+ if (dcr & 0x04) printk (",N-INIT");
+ if (!(dcr & 0x02)) printk (",N-AUTOFD");
+ if (!(dcr & 0x01)) printk (",N-STROBE");
+ }
+ printk ("] dsr=[");
+ if (!(dsr & 0x80)) printk ("BUSY");
+ if (dsr & 0x40) printk (",N-ACK");
+ if (dsr & 0x20) printk (",PERROR");
+ if (dsr & 0x10) printk (",SELECT");
+ if (dsr & 0x08) printk (",N-FAULT");
+ printk ("]\n");
+ return;
+}
+#else /* !DEBUG_PARPORT */
+#define dump_parport_state(args...)
+#endif /* !DEBUG_PARPORT */
+
+/* __parport_pc_frob_control differs from parport_pc_frob_control in that
+ * it doesn't do any extra masking. */
+static __inline__ unsigned char __parport_pc_frob_control (struct parport *p,
+ unsigned char mask,
+ unsigned char val)
+{
+ struct parport_pc_private *priv = p->physport->private_data;
+ unsigned char ctr = priv->ctr;
+#ifdef DEBUG_PARPORT
+ printk (KERN_DEBUG
+ "__parport_pc_frob_control(%02x,%02x): %02x -> %02x\n",
+ mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
+#endif
+ ctr = (ctr & ~mask) ^ val;
+ ctr &= priv->ctr_writable; /* only write writable bits. */
+ outb (ctr, CONTROL (p));
+ priv->ctr = ctr; /* Update soft copy */
+ return ctr;
+}
+
+static __inline__ void parport_pc_data_reverse (struct parport *p)
+{
+ __parport_pc_frob_control (p, 0x20, 0x20);
+}
+
+static __inline__ void parport_pc_data_forward (struct parport *p)
+{
+ __parport_pc_frob_control (p, 0x20, 0x00);
+}
+
+static __inline__ void parport_pc_write_control (struct parport *p,
+ unsigned char d)
+{
+ const unsigned char wm = (PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_SELECT);
+
+ /* Take this out when drivers have adapted to newer interface. */
+ if (d & 0x20) {
+ printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
+ p->name, p->cad->name);
+ parport_pc_data_reverse (p);
+ }
+
+ __parport_pc_frob_control (p, wm, d & wm);
+}
+
+static __inline__ unsigned char parport_pc_read_control(struct parport *p)
+{
+ const unsigned char rm = (PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_SELECT);
+ const struct parport_pc_private *priv = p->physport->private_data;
+ return priv->ctr & rm; /* Use soft copy */
+}
+
+static __inline__ unsigned char parport_pc_frob_control (struct parport *p,
+ unsigned char mask,
+ unsigned char val)
+{
+ const unsigned char wm = (PARPORT_CONTROL_STROBE |
+ PARPORT_CONTROL_AUTOFD |
+ PARPORT_CONTROL_INIT |
+ PARPORT_CONTROL_SELECT);
+
+ /* Take this out when drivers have adapted to newer interface. */
+ if (mask & 0x20) {
+ printk (KERN_DEBUG "%s (%s): use data_%s for this!\n",
+ p->name, p->cad->name,
+ (val & 0x20) ? "reverse" : "forward");
+ if (val & 0x20)
+ parport_pc_data_reverse (p);
+ else
+ parport_pc_data_forward (p);
+ }
+
+ /* Restrict mask and val to control lines. */
+ mask &= wm;
+ val &= wm;
+
+ return __parport_pc_frob_control (p, mask, val);
+}
+
+static __inline__ unsigned char parport_pc_read_status(struct parport *p)
+{
+ return inb(STATUS(p));
+}
+
+
+static __inline__ void parport_pc_disable_irq(struct parport *p)
+{
+ __parport_pc_frob_control (p, 0x10, 0x00);
+}
+
+static __inline__ void parport_pc_enable_irq(struct parport *p)
+{
+ __parport_pc_frob_control (p, 0x10, 0x10);
+}
+
+extern void parport_pc_release_resources(struct parport *p);
+
+extern int parport_pc_claim_resources(struct parport *p);
+
+/* PCMCIA code will want to get us to look at a port. Provide a mechanism. */
+extern struct parport *parport_pc_probe_port (unsigned long base,
+ unsigned long base_hi,
+ int irq, int dma,
+ struct pci_dev *dev);
+extern void parport_pc_unregister_port (struct parport *p);
+
+#endif