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-rw-r--r--include/asm-sparc64/parport.h175
1 files changed, 175 insertions, 0 deletions
diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h
new file mode 100644
index 0000000..ab88349
--- /dev/null
+++ b/include/asm-sparc64/parport.h
@@ -0,0 +1,175 @@
+/* $Id: parport.h,v 1.11 2001/05/11 07:54:24 davem Exp $
+ * parport.h: sparc64 specific parport initialization and dma.
+ *
+ * Copyright (C) 1999 Eddie C. Dost (ecd@skynet.be)
+ */
+
+#ifndef _ASM_SPARC64_PARPORT_H
+#define _ASM_SPARC64_PARPORT_H 1
+
+#include <asm/ebus.h>
+#include <asm/isa.h>
+#include <asm/ns87303.h>
+
+#define PARPORT_PC_MAX_PORTS PARPORT_MAX
+
+static struct sparc_ebus_info {
+ struct ebus_dma_info info;
+ unsigned int addr;
+ unsigned int count;
+} sparc_ebus_dmas[PARPORT_PC_MAX_PORTS];
+
+static __inline__ void enable_dma(unsigned int dmanr)
+{
+ if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info,
+ sparc_ebus_dmas[dmanr].addr,
+ sparc_ebus_dmas[dmanr].count))
+ BUG();
+
+ ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1);
+}
+
+static __inline__ void disable_dma(unsigned int dmanr)
+{
+ ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 0);
+}
+
+static __inline__ void clear_dma_ff(unsigned int dmanr)
+{
+ /* nothing */
+}
+
+static __inline__ void set_dma_mode(unsigned int dmanr, char mode)
+{
+ ebus_dma_prepare(&sparc_ebus_dmas[dmanr].info, (mode != DMA_MODE_WRITE));
+}
+
+static __inline__ void set_dma_addr(unsigned int dmanr, unsigned int addr)
+{
+ sparc_ebus_dmas[dmanr].addr = addr;
+}
+
+static __inline__ void set_dma_count(unsigned int dmanr, unsigned int count)
+{
+ sparc_ebus_dmas[dmanr].count = count;
+}
+
+static __inline__ unsigned int get_dma_residue(unsigned int dmanr)
+{
+ return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info);
+}
+
+static int ebus_ecpp_p(struct linux_ebus_device *edev)
+{
+ if (!strcmp(edev->prom_name, "ecpp"))
+ return 1;
+ if (!strcmp(edev->prom_name, "parallel")) {
+ char compat[19];
+ prom_getstring(edev->prom_node,
+ "compatible",
+ compat, sizeof(compat));
+ compat[18] = '\0';
+ if (!strcmp(compat, "ecpp"))
+ return 1;
+ if (!strcmp(compat, "ns87317-ecpp") &&
+ !strcmp(compat + 13, "ecpp"))
+ return 1;
+ }
+ return 0;
+}
+
+static int parport_isa_probe(int count)
+{
+ struct sparc_isa_bridge *isa_br;
+ struct sparc_isa_device *isa_dev;
+
+ for_each_isa(isa_br) {
+ for_each_isadev(isa_dev, isa_br) {
+ struct sparc_isa_device *child;
+ unsigned long base;
+
+ if (strcmp(isa_dev->prom_name, "dma"))
+ continue;
+
+ child = isa_dev->child;
+ while (child) {
+ if (!strcmp(child->prom_name, "parallel"))
+ break;
+ child = child->next;
+ }
+ if (!child)
+ continue;
+
+ base = child->resource.start;
+
+ /* No DMA, see commentary in
+ * asm-sparc64/floppy.h:isa_floppy_init()
+ */
+ if (parport_pc_probe_port(base, base + 0x400,
+ child->irq, PARPORT_DMA_NOFIFO,
+ child->bus->self))
+ count++;
+ }
+ }
+
+ return count;
+}
+
+static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
+{
+ struct linux_ebus *ebus;
+ struct linux_ebus_device *edev;
+ int count = 0;
+
+ for_each_ebus(ebus) {
+ for_each_ebusdev(edev, ebus) {
+ if (ebus_ecpp_p(edev)) {
+ unsigned long base = edev->resource[0].start;
+ unsigned long config = edev->resource[1].start;
+ unsigned long d_base = edev->resource[2].start;
+ unsigned long d_len;
+
+ spin_lock_init(&sparc_ebus_dmas[count].info.lock);
+ d_len = (edev->resource[2].end -
+ d_base) + 1;
+ sparc_ebus_dmas[count].info.regs =
+ ioremap(d_base, d_len);
+ if (!sparc_ebus_dmas[count].info.regs)
+ continue;
+ sparc_ebus_dmas[count].info.flags = 0;
+ sparc_ebus_dmas[count].info.callback = NULL;
+ sparc_ebus_dmas[count].info.client_cookie = NULL;
+ sparc_ebus_dmas[count].info.irq = 0xdeadbeef;
+ strcpy(sparc_ebus_dmas[count].info.name, "parport");
+ if (ebus_dma_register(&sparc_ebus_dmas[count].info))
+ continue;
+ ebus_dma_irq_enable(&sparc_ebus_dmas[count].info, 1);
+
+ /* Configure IRQ to Push Pull, Level Low */
+ /* Enable ECP, set bit 2 of the CTR first */
+ outb(0x04, base + 0x02);
+ ns87303_modify(config, PCR,
+ PCR_EPP_ENABLE |
+ PCR_IRQ_ODRAIN,
+ PCR_ECP_ENABLE |
+ PCR_ECP_CLK_ENA |
+ PCR_IRQ_POLAR);
+
+ /* CTR bit 5 controls direction of port */
+ ns87303_modify(config, PTR,
+ 0, PTR_LPT_REG_DIR);
+
+ if (parport_pc_probe_port(base, base + 0x400,
+ edev->irqs[0],
+ count, ebus->self))
+ count++;
+ }
+ }
+ }
+
+ count = parport_isa_probe(count);
+
+ return count;
+}
+
+#endif /* !(_ASM_SPARC64_PARPORT_H */
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