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Merge tag 'sparc-for-6.9-tag1' of git:https://git.kernel.org/pub/scm/linux/…
…kernel/git/alarsson/linux-sparc Pull sparc updates from Andreas Larsson: - Fix missing prototype warnings in various places, including switching to using generic cmpdi2/ucmpdi2 and parport.h and stop selecting unneeded GENERIC_ISA_DMA. - Reduce duplicate code by using shared font data, with dependency fixup in separate commit touching lib/fonts. - Convert sbus drives to use remove callbacks returning void - Fix return values of __setup handlers - Section mismatch fix for grpci pci drivers - Make the vio bus type constant - Kconfig cleanups and fixes - Typo fixes * tag 'sparc-for-6.9-tag1' of git:https://git.kernel.org/pub/scm/linux/kernel/git/alarsson/linux-sparc: lib/fonts: Allow Sparc console 8x16 font for sparc64 early boot text console sbus: uctrl: Convert to platform remove callback returning void sbus: flash: Convert to platform remove callback returning void sbus: envctrl: Convert to platform remove callback returning void sbus: display7seg: Convert to platform remove callback returning void sbus: bbc_i2c: Convert to platform remove callback returning void sbus: Add prototype for bbc_envctrl_init and bbc_envctrl_cleanup to header sparc32: Fix section mismatch in leon_pci_grpci sparc32: Fix parport build with sparc32 sparc32: Do not select GENERIC_ISA_DMA mtd: maps: sun_uflash: Declare uflash_devinit static sparc32: Fix build with trapbase sparc32: Use generic cmpdi2/ucmpdi2 variants sparc: select FRAME_POINTER instead of redefining it sparc: vDSO: fix return value of __setup handler sparc64: NMI watchdog: fix return value of __setup handler sparc: vio: make vio_bus_type const sparc: Fix typos sparc: Use shared font data sparc: remove obsolete config ARCH_ATU
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/* SPDX-License-Identifier: GPL-2.0 */ | ||
/* parport.h: sparc64 specific parport initialization and dma. | ||
* | ||
* Copyright (C) 1999 Eddie C. Dost ([email protected]) | ||
*/ | ||
#ifndef ___ASM_SPARC_PARPORT_H | ||
#define ___ASM_SPARC_PARPORT_H | ||
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#ifndef _ASM_SPARC64_PARPORT_H | ||
#define _ASM_SPARC64_PARPORT_H 1 | ||
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#include <linux/of.h> | ||
#include <linux/platform_device.h> | ||
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#include <asm/ebus_dma.h> | ||
#include <asm/ns87303.h> | ||
#include <asm/prom.h> | ||
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#define PARPORT_PC_MAX_PORTS PARPORT_MAX | ||
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/* | ||
* While sparc64 doesn't have an ISA DMA API, we provide something that looks | ||
* close enough to make parport_pc happy | ||
*/ | ||
#define HAS_DMA | ||
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#ifdef CONFIG_PARPORT_PC_FIFO | ||
static DEFINE_SPINLOCK(dma_spin_lock); | ||
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#define claim_dma_lock() \ | ||
({ unsigned long flags; \ | ||
spin_lock_irqsave(&dma_spin_lock, flags); \ | ||
flags; \ | ||
}) | ||
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#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 | ||
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static struct sparc_ebus_info { | ||
struct ebus_dma_info info; | ||
unsigned int addr; | ||
unsigned int count; | ||
int lock; | ||
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struct parport *port; | ||
} sparc_ebus_dmas[PARPORT_PC_MAX_PORTS]; | ||
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static DECLARE_BITMAP(dma_slot_map, PARPORT_PC_MAX_PORTS); | ||
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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; | ||
} | ||
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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; | ||
} | ||
} | ||
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static inline void enable_dma(unsigned int dmanr) | ||
{ | ||
ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1); | ||
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if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info, | ||
sparc_ebus_dmas[dmanr].addr, | ||
sparc_ebus_dmas[dmanr].count)) | ||
BUG(); | ||
} | ||
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static inline void disable_dma(unsigned int dmanr) | ||
{ | ||
ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 0); | ||
} | ||
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static inline void clear_dma_ff(unsigned int dmanr) | ||
{ | ||
/* nothing */ | ||
} | ||
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static inline void set_dma_mode(unsigned int dmanr, char mode) | ||
{ | ||
ebus_dma_prepare(&sparc_ebus_dmas[dmanr].info, (mode != DMA_MODE_WRITE)); | ||
} | ||
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static inline void set_dma_addr(unsigned int dmanr, unsigned int addr) | ||
{ | ||
sparc_ebus_dmas[dmanr].addr = addr; | ||
} | ||
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static inline void set_dma_count(unsigned int dmanr, unsigned int count) | ||
{ | ||
sparc_ebus_dmas[dmanr].count = count; | ||
} | ||
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static inline unsigned int get_dma_residue(unsigned int dmanr) | ||
{ | ||
return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info); | ||
} | ||
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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; | ||
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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; | ||
} | ||
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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; | ||
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spin_lock_init(&sparc_ebus_dmas[slot].info.lock); | ||
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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"); | ||
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if (!sparc_ebus_dmas[slot].info.regs) | ||
goto out_clear_map; | ||
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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; | ||
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ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 1); | ||
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/* 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); | ||
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/* CTR bit 5 controls direction of port */ | ||
ns87303_modify(config, PTR, | ||
0, PTR_LPT_REG_DIR); | ||
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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; | ||
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dev_set_drvdata(&op->dev, p); | ||
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return 0; | ||
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out_disable_irq: | ||
ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0); | ||
ebus_dma_unregister(&sparc_ebus_dmas[slot].info); | ||
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out_unmap_regs: | ||
of_iounmap(&op->resource[2], sparc_ebus_dmas[slot].info.regs, d_len); | ||
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out_clear_map: | ||
clear_bit(slot, dma_slot_map); | ||
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out_err: | ||
return err; | ||
} | ||
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static int ecpp_remove(struct platform_device *op) | ||
{ | ||
struct parport *p = dev_get_drvdata(&op->dev); | ||
int slot = p->dma; | ||
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parport_pc_unregister_port(p); | ||
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if (slot != PARPORT_DMA_NOFIFO) { | ||
unsigned long d_base = op->resource[2].start; | ||
unsigned long d_len; | ||
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d_len = (op->resource[2].end - d_base) + 1UL; | ||
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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); | ||
} | ||
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return 0; | ||
} | ||
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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", | ||
}, | ||
{}, | ||
}; | ||
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static struct platform_driver ecpp_driver = { | ||
.driver = { | ||
.name = "ecpp", | ||
.of_match_table = ecpp_match, | ||
}, | ||
.probe = ecpp_probe, | ||
.remove = ecpp_remove, | ||
}; | ||
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static int parport_pc_find_nonpci_ports(int autoirq, int autodma) | ||
{ | ||
return platform_driver_register(&ecpp_driver); | ||
} | ||
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#endif /* !(_ASM_SPARC64_PARPORT_H */ |
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