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, 175 insertions, 0 deletions

diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h
new file mode 100644
index 000000000000..ab88349ddadc
--- /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 */