[Linux-parport] [PATCH v2 6/7] sparc32: Fix parport build with sparc32
Sam Ravnborg via B4 Relay
devnull+sam.ravnborg.org at kernel.org
Sat Feb 24 09:42:27 PST 2024
From: Sam Ravnborg <sam at ravnborg.org>
include/asm/parport.h is sparc64 specific.
Rename it to parport_64.h and use the generic version for sparc32.
This fixed all{mod,yes}config build errors like:
parport_pc.c:(.text):undefined-reference-to-ebus_dma_enable
parport_pc.c:(.text):undefined-reference-to-ebus_dma_irq_enable
parport_pc.c:(.text):undefined-reference-to-ebus_dma_register
The errors occur as the sparc32 build references sparc64 symbols.
Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
Cc: "David S. Miller" <davem at davemloft.net>
Cc: Andreas Larsson <andreas at gaisler.com>
Cc: Randy Dunlap <rdunlap at infradead.org>
Cc: Maciej W. Rozycki <macro at orcam.me.uk>
Closes: https://lore.kernel.org/r/20230406160548.25721-1-rdunlap@infradead.org/
Fixes: 66bcd06099bb ("parport_pc: Also enable driver for PCI systems")
Cc: stable at vger.kernel.org # v5.18+
---
arch/sparc/include/asm/parport.h | 259 +-----------------------------------
arch/sparc/include/asm/parport_64.h | 256 +++++++++++++++++++++++++++++++++++
2 files changed, 263 insertions(+), 252 deletions(-)
diff --git a/arch/sparc/include/asm/parport.h b/arch/sparc/include/asm/parport.h
index 0a7ffcfd59cd..e2eed8f97665 100644
--- a/arch/sparc/include/asm/parport.h
+++ b/arch/sparc/include/asm/parport.h
@@ -1,256 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0 */
-/* parport.h: sparc64 specific parport initialization and dma.
- *
- * Copyright (C) 1999 Eddie C. Dost (ecd at skynet.be)
- */
+#ifndef ___ASM_SPARC_PARPORT_H
+#define ___ASM_SPARC_PARPORT_H
-#ifndef _ASM_SPARC64_PARPORT_H
-#define _ASM_SPARC64_PARPORT_H 1
-
-#include <linux/of.h>
-#include <linux/platform_device.h>
-
-#include <asm/ebus_dma.h>
-#include <asm/ns87303.h>
-#include <asm/prom.h>
-
-#define PARPORT_PC_MAX_PORTS PARPORT_MAX
-
-/*
- * While sparc64 doesn't have an ISA DMA API, we provide something that looks
- * close enough to make parport_pc happy
- */
-#define HAS_DMA
-
-#ifdef CONFIG_PARPORT_PC_FIFO
-static DEFINE_SPINLOCK(dma_spin_lock);
-
-#define claim_dma_lock() \
-({ unsigned long flags; \
- spin_lock_irqsave(&dma_spin_lock, flags); \
- flags; \
-})
-
-#define release_dma_lock(__flags) \
- spin_unlock_irqrestore(&dma_spin_lock, __flags);
+#if defined(__sparc__) && defined(__arch64__)
+#include <asm/parport_64.h>
+#else
+#include <asm-generic/parport.h>
+#endif
#endif
-static struct sparc_ebus_info {
- struct ebus_dma_info 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)
- return -EINVAL;
- if (xchg(&sparc_ebus_dmas[dmanr].lock, 1) != 0)
- return -EBUSY;
- return 0;
-}
-
-static inline void free_dma(unsigned int dmanr)
-{
- if (dmanr >= PARPORT_PC_MAX_PORTS) {
- printk(KERN_WARNING "Trying to free DMA%d\n", dmanr);
- return;
- }
- if (xchg(&sparc_ebus_dmas[dmanr].lock, 0) == 0) {
- printk(KERN_WARNING "Trying to free free DMA%d\n", dmanr);
- return;
- }
-}
-
-static inline void enable_dma(unsigned int dmanr)
-{
- ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1);
-
- if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info,
- sparc_ebus_dmas[dmanr].addr,
- sparc_ebus_dmas[dmanr].count))
- BUG();
-}
-
-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 ecpp_probe(struct platform_device *op)
-{
- 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->dev.of_node->parent;
- if (of_node_name_eq(parent, "dma")) {
- p = parport_pc_probe_port(base, base + 0x400,
- op->archdata.irqs[0], PARPORT_DMA_NOFIFO,
- op->dev.parent->parent, 0);
- 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->archdata.irqs[0],
- slot,
- op->dev.parent,
- 0);
- 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 ecpp_remove(struct platform_device *op)
-{
- 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 0;
-}
-
-static const struct of_device_id ecpp_match[] = {
- {
- .name = "ecpp",
- },
- {
- .name = "parallel",
- .compatible = "ecpp",
- },
- {
- .name = "parallel",
- .compatible = "ns87317-ecpp",
- },
- {
- .name = "parallel",
- .compatible = "pnpALI,1533,3",
- },
- {},
-};
-
-static struct platform_driver ecpp_driver = {
- .driver = {
- .name = "ecpp",
- .of_match_table = ecpp_match,
- },
- .probe = ecpp_probe,
- .remove = ecpp_remove,
-};
-
-static int parport_pc_find_nonpci_ports(int autoirq, int autodma)
-{
- return platform_driver_register(&ecpp_driver);
-}
-
-#endif /* !(_ASM_SPARC64_PARPORT_H */
diff --git a/arch/sparc/include/asm/parport_64.h b/arch/sparc/include/asm/parport_64.h
new file mode 100644
index 000000000000..0a7ffcfd59cd
--- /dev/null
+++ b/arch/sparc/include/asm/parport_64.h
@@ -0,0 +1,256 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* parport.h: sparc64 specific parport initialization and dma.
+ *
+ * Copyright (C) 1999 Eddie C. Dost (ecd at skynet.be)
+ */
+
+#ifndef _ASM_SPARC64_PARPORT_H
+#define _ASM_SPARC64_PARPORT_H 1
+
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include <asm/ebus_dma.h>
+#include <asm/ns87303.h>
+#include <asm/prom.h>
+
+#define PARPORT_PC_MAX_PORTS PARPORT_MAX
+
+/*
+ * While sparc64 doesn't have an ISA DMA API, we provide something that looks
+ * close enough to make parport_pc happy
+ */
+#define HAS_DMA
+
+#ifdef CONFIG_PARPORT_PC_FIFO
+static DEFINE_SPINLOCK(dma_spin_lock);
+
+#define claim_dma_lock() \
+({ unsigned long flags; \
+ spin_lock_irqsave(&dma_spin_lock, flags); \
+ flags; \
+})
+
+#define release_dma_lock(__flags) \
+ spin_unlock_irqrestore(&dma_spin_lock, __flags);
+#endif
+
+static struct sparc_ebus_info {
+ struct ebus_dma_info 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)
+ return -EINVAL;
+ if (xchg(&sparc_ebus_dmas[dmanr].lock, 1) != 0)
+ return -EBUSY;
+ return 0;
+}
+
+static inline void free_dma(unsigned int dmanr)
+{
+ if (dmanr >= PARPORT_PC_MAX_PORTS) {
+ printk(KERN_WARNING "Trying to free DMA%d\n", dmanr);
+ return;
+ }
+ if (xchg(&sparc_ebus_dmas[dmanr].lock, 0) == 0) {
+ printk(KERN_WARNING "Trying to free free DMA%d\n", dmanr);
+ return;
+ }
+}
+
+static inline void enable_dma(unsigned int dmanr)
+{
+ ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1);
+
+ if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info,
+ sparc_ebus_dmas[dmanr].addr,
+ sparc_ebus_dmas[dmanr].count))
+ BUG();
+}
+
+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 ecpp_probe(struct platform_device *op)
+{
+ 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->dev.of_node->parent;
+ if (of_node_name_eq(parent, "dma")) {
+ p = parport_pc_probe_port(base, base + 0x400,
+ op->archdata.irqs[0], PARPORT_DMA_NOFIFO,
+ op->dev.parent->parent, 0);
+ 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->archdata.irqs[0],
+ slot,
+ op->dev.parent,
+ 0);
+ 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 ecpp_remove(struct platform_device *op)
+{
+ 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 0;
+}
+
+static const struct of_device_id ecpp_match[] = {
+ {
+ .name = "ecpp",
+ },
+ {
+ .name = "parallel",
+ .compatible = "ecpp",
+ },
+ {
+ .name = "parallel",
+ .compatible = "ns87317-ecpp",
+ },
+ {
+ .name = "parallel",
+ .compatible = "pnpALI,1533,3",
+ },
+ {},
+};
+
+static struct platform_driver ecpp_driver = {
+ .driver = {
+ .name = "ecpp",
+ .of_match_table = ecpp_match,
+ },
+ .probe = ecpp_probe,
+ .remove = ecpp_remove,
+};
+
+static int parport_pc_find_nonpci_ports(int autoirq, int autodma)
+{
+ return platform_driver_register(&ecpp_driver);
+}
+
+#endif /* !(_ASM_SPARC64_PARPORT_H */
--
2.34.1
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