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Diffstat (limited to 'include/asm-sparc64/parport.h')
-rw-r--r--include/asm-sparc64/parport.h233
1 files changed, 133 insertions, 100 deletions
diff --git a/include/asm-sparc64/parport.h b/include/asm-sparc64/parport.h
index 23cc63f049a8..8116e8f6062c 100644
--- a/include/asm-sparc64/parport.h
+++ b/include/asm-sparc64/parport.h
@@ -8,8 +8,9 @@
#define _ASM_SPARC64_PARPORT_H 1
#include <asm/ebus.h>
-#include <asm/isa.h>
#include <asm/ns87303.h>
+#include <asm/of_device.h>
+#include <asm/prom.h>
#define PARPORT_PC_MAX_PORTS PARPORT_MAX
@@ -35,8 +36,12 @@ static struct sparc_ebus_info {
unsigned int addr;
unsigned int count;
int lock;
+
+ struct parport *port;
} sparc_ebus_dmas[PARPORT_PC_MAX_PORTS];
+static DECLARE_BITMAP(dma_slot_map, PARPORT_PC_MAX_PORTS);
+
static __inline__ int request_dma(unsigned int dmanr, const char *device_id)
{
if (dmanr >= PARPORT_PC_MAX_PORTS)
@@ -98,117 +103,145 @@ 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)
+static int __devinit ecpp_probe(struct of_device *op, const struct of_device_id *match)
{
- if (!strcmp(edev->prom_node->name, "ecpp"))
- return 1;
- if (!strcmp(edev->prom_node->name, "parallel")) {
- const char *compat;
-
- compat = of_get_property(edev->prom_node,
- "compatible", NULL);
- if (compat &&
- (!strcmp(compat, "ecpp") ||
- !strcmp(compat, "ns87317-ecpp") ||
- !strcmp(compat + 13, "ecpp")))
- return 1;
+ unsigned long base = op->resource[0].start;
+ unsigned long config = op->resource[1].start;
+ unsigned long d_base = op->resource[2].start;
+ unsigned long d_len;
+ struct device_node *parent;
+ struct parport *p;
+ int slot, err;
+
+ parent = op->node->parent;
+ if (!strcmp(parent->name, "dma")) {
+ p = parport_pc_probe_port(base, base + 0x400,
+ op->irqs[0], PARPORT_DMA_NOFIFO,
+ op->dev.parent->parent);
+ if (!p)
+ return -ENOMEM;
+ dev_set_drvdata(&op->dev, p);
+ return 0;
}
+
+ for (slot = 0; slot < PARPORT_PC_MAX_PORTS; slot++) {
+ if (!test_and_set_bit(slot, dma_slot_map))
+ break;
+ }
+ err = -ENODEV;
+ if (slot >= PARPORT_PC_MAX_PORTS)
+ goto out_err;
+
+ spin_lock_init(&sparc_ebus_dmas[slot].info.lock);
+
+ d_len = (op->resource[2].end - d_base) + 1UL;
+ sparc_ebus_dmas[slot].info.regs =
+ of_ioremap(&op->resource[2], 0, d_len, "ECPP DMA");
+
+ if (!sparc_ebus_dmas[slot].info.regs)
+ goto out_clear_map;
+
+ sparc_ebus_dmas[slot].info.flags = 0;
+ sparc_ebus_dmas[slot].info.callback = NULL;
+ sparc_ebus_dmas[slot].info.client_cookie = NULL;
+ sparc_ebus_dmas[slot].info.irq = 0xdeadbeef;
+ strcpy(sparc_ebus_dmas[slot].info.name, "parport");
+ if (ebus_dma_register(&sparc_ebus_dmas[slot].info))
+ goto out_unmap_regs;
+
+ ebus_dma_irq_enable(&sparc_ebus_dmas[slot].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);
+
+ p = parport_pc_probe_port(base, base + 0x400,
+ op->irqs[0],
+ slot,
+ op->dev.parent);
+ err = -ENOMEM;
+ if (!p)
+ goto out_disable_irq;
+
+ dev_set_drvdata(&op->dev, p);
+
return 0;
+
+out_disable_irq:
+ ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);
+ ebus_dma_unregister(&sparc_ebus_dmas[slot].info);
+
+out_unmap_regs:
+ of_iounmap(&op->resource[2], sparc_ebus_dmas[slot].info.regs, d_len);
+
+out_clear_map:
+ clear_bit(slot, dma_slot_map);
+
+out_err:
+ return err;
}
-static int parport_isa_probe(int count)
+static int __devexit ecpp_remove(struct of_device *op)
{
- 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_node->name, "dma"))
- continue;
-
- child = isa_dev->child;
- while (child) {
- if (!strcmp(child->prom_node->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->dev))
- count++;
- }
+ struct parport *p = dev_get_drvdata(&op->dev);
+ int slot = p->dma;
+
+ parport_pc_unregister_port(p);
+
+ if (slot != PARPORT_DMA_NOFIFO) {
+ unsigned long d_base = op->resource[2].start;
+ unsigned long d_len;
+
+ d_len = (op->resource[2].end - d_base) + 1UL;
+
+ ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);
+ ebus_dma_unregister(&sparc_ebus_dmas[slot].info);
+ of_iounmap(&op->resource[2],
+ sparc_ebus_dmas[slot].info.regs,
+ d_len);
+ clear_bit(slot, dma_slot_map);
}
- return count;
+ return 0;
}
-static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
+static struct of_device_id ecpp_match[] = {
+ {
+ .name = "ecpp",
+ },
+ {
+ .name = "parallel",
+ .compatible = "ecpp",
+ },
+ {
+ .name = "parallel",
+ .compatible = "ns87317-ecpp",
+ },
+ {},
+};
+
+static struct of_platform_driver ecpp_driver = {
+ .name = "ecpp",
+ .match_table = ecpp_match,
+ .probe = ecpp_probe,
+ .remove = __devexit_p(ecpp_remove),
+};
+
+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->dev))
- count++;
- }
- }
- }
+ of_register_driver(&ecpp_driver, &of_bus_type);
- count = parport_isa_probe(count);
-
- return count;
+ return 0;
}
#endif /* !(_ASM_SPARC64_PARPORT_H */
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-23 07:45:01 +0000