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Message-Id: <20231219-sam-sparc32-sunset-v3-v1-25-64bb44b598c5@ravnborg.org>
Date: Tue, 19 Dec 2023 23:03:30 +0100
From: Sam Ravnborg via B4 Relay <devnull+sam.ravnborg.org@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Arnd Bergmann <arnd@...nel.org>, Andreas Larsson <andreas@...sler.com>
Cc: Helge Deller <deller@....de>, Alexander Viro <viro@...iv.linux.org.uk>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alan Stern <stern@...land.harvard.edu>, Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, sparclinux@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-sound@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>
Subject: [PATCH 25/27] sparc32: Drop sbus support
From: Sam Ravnborg <sam@...nborg.org>
LEON do not have an sbus - so drop support for that for sparc32.
Fix a few Kconfig expressions to use CONFIG_SBUS rather than SPARC
as only SPARC64 has an sbus now.
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Arnd Bergmann <arnd@...nel.org>
Cc: Andreas Larsson <andreas@...sler.com>
---
arch/sparc/Kconfig | 4 +-
arch/sparc/include/asm/fb.h | 8 ++--
arch/sparc/include/asm/io_32.h | 83 ----------------------------------------
arch/sparc/kernel/ioport.c | 49 ------------------------
arch/sparc/kernel/of_device_32.c | 14 -------
drivers/video/fbdev/Kconfig | 2 +-
sound/sparc/Kconfig | 1 +
7 files changed, 9 insertions(+), 152 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 0fc52c3c7487..1b9cf7f3c500 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -392,11 +392,11 @@ endmenu
menu "Bus options (PCI etc.)"
config SBUS
bool
- default y
+ default y if SPARC64
config SBUSCHAR
bool
- default y
+ default y if SPARC64
config SUN_LDOMS
bool "Sun Logical Domains support"
diff --git a/arch/sparc/include/asm/fb.h b/arch/sparc/include/asm/fb.h
index 24440c0fda49..15b007875457 100644
--- a/arch/sparc/include/asm/fb.h
+++ b/arch/sparc/include/asm/fb.h
@@ -8,6 +8,9 @@
struct fb_info;
+int fb_is_primary_device(struct fb_info *info);
+#define fb_is_primary_device fb_is_primary_device
+
#ifdef CONFIG_SPARC32
static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
unsigned long vm_start, unsigned long vm_end,
@@ -18,9 +21,7 @@ static inline pgprot_t pgprot_framebuffer(pgprot_t prot,
#define pgprot_framebuffer pgprot_framebuffer
#endif
-int fb_is_primary_device(struct fb_info *info);
-#define fb_is_primary_device fb_is_primary_device
-
+#ifdef CONFIG_SPARC64
static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
{
sbus_memcpy_fromio(to, from, n);
@@ -38,6 +39,7 @@ static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n)
sbus_memset_io(addr, c, n);
}
#define fb_memset fb_memset_io
+#endif
#include <asm-generic/fb.h>
diff --git a/arch/sparc/include/asm/io_32.h b/arch/sparc/include/asm/io_32.h
index 83abe709d120..b9f280ee1b11 100644
--- a/arch/sparc/include/asm/io_32.h
+++ b/arch/sparc/include/asm/io_32.h
@@ -56,78 +56,6 @@ static inline void _memcpy_toio(volatile void __iomem *dst, const void *src,
}
}
-/*
- * SBus accessors.
- *
- * SBus has only one, memory mapped, I/O space.
- * We do not need to flip bytes for SBus of course.
- */
-static inline u8 sbus_readb(const volatile void __iomem *addr)
-{
- return *(__force volatile u8 *)addr;
-}
-
-static inline u16 sbus_readw(const volatile void __iomem *addr)
-{
- return *(__force volatile u16 *)addr;
-}
-
-static inline u32 sbus_readl(const volatile void __iomem *addr)
-{
- return *(__force volatile u32 *)addr;
-}
-
-static inline void sbus_writeb(u8 b, volatile void __iomem *addr)
-{
- *(__force volatile u8 *)addr = b;
-}
-
-static inline void sbus_writew(u16 w, volatile void __iomem *addr)
-{
- *(__force volatile u16 *)addr = w;
-}
-
-static inline void sbus_writel(u32 l, volatile void __iomem *addr)
-{
- *(__force volatile u32 *)addr = l;
-}
-
-static inline void sbus_memset_io(volatile void __iomem *__dst, int c,
- __kernel_size_t n)
-{
- while(n--) {
- sbus_writeb(c, __dst);
- __dst++;
- }
-}
-
-static inline void sbus_memcpy_fromio(void *dst,
- const volatile void __iomem *src,
- __kernel_size_t n)
-{
- char *d = dst;
-
- while (n--) {
- char tmp = sbus_readb(src);
- *d++ = tmp;
- src++;
- }
-}
-
-static inline void sbus_memcpy_toio(volatile void __iomem *dst,
- const void *src,
- __kernel_size_t n)
-{
- const char *s = src;
- volatile void __iomem *d = dst;
-
- while (n--) {
- char tmp = *s++;
- sbus_writeb(tmp, d);
- d++;
- }
-}
-
/* Create a virtual mapping cookie for an IO port range */
void __iomem *ioport_map(unsigned long port, unsigned int nr);
void ioport_unmap(void __iomem *);
@@ -136,17 +64,6 @@ void ioport_unmap(void __iomem *);
struct pci_dev;
void pci_iounmap(struct pci_dev *dev, void __iomem *);
-static inline int sbus_can_dma_64bit(void)
-{
- return 0;
-}
-static inline int sbus_can_burst64(void)
-{
- return 0;
-}
-struct device;
-void sbus_set_sbus64(struct device *, int);
-
#define __ARCH_HAS_NO_PAGE_ZERO_MAPPED 1
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 9c4c72775274..97b836f3be25 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -55,8 +55,6 @@ static void __iomem *_sparc_alloc_io(unsigned int busno, unsigned long phys,
unsigned long size, char *name);
static void _sparc_free_io(struct resource *res);
-static void register_proc_sparc_ioport(void);
-
/* This points to the next to use virtual memory for DVMA mappings */
static struct resource _sparc_dvma = {
.name = "sparc_dvma", .start = DVMA_VADDR, .end = DVMA_END - 1
@@ -279,25 +277,6 @@ bool sparc_dma_free_resource(void *cpu_addr, size_t size)
return true;
}
-#ifdef CONFIG_SBUS
-
-void sbus_set_sbus64(struct device *dev, int x)
-{
- printk("sbus_set_sbus64: unsupported\n");
-}
-EXPORT_SYMBOL(sbus_set_sbus64);
-
-static int __init sparc_register_ioport(void)
-{
- register_proc_sparc_ioport();
-
- return 0;
-}
-
-arch_initcall(sparc_register_ioport);
-
-#endif /* CONFIG_SBUS */
-
/*
* IIep is write-through, not flushing on cpu to device transfer.
*
@@ -310,31 +289,3 @@ void arch_sync_dma_for_cpu(phys_addr_t paddr, size_t size,
if (dir != DMA_TO_DEVICE && !sparc_leon3_snooping_enabled())
leon_flush_dcache_all();
}
-
-#ifdef CONFIG_PROC_FS
-
-static int sparc_io_proc_show(struct seq_file *m, void *v)
-{
- struct resource *root = m->private, *r;
- const char *nm;
-
- for (r = root->child; r != NULL; r = r->sibling) {
- if ((nm = r->name) == NULL) nm = "???";
- seq_printf(m, "%016llx-%016llx: %s\n",
- (unsigned long long)r->start,
- (unsigned long long)r->end, nm);
- }
-
- return 0;
-}
-#endif /* CONFIG_PROC_FS */
-
-static void register_proc_sparc_ioport(void)
-{
-#ifdef CONFIG_PROC_FS
- proc_create_single_data("io_map", 0, NULL, sparc_io_proc_show,
- &sparc_iomap);
- proc_create_single_data("dvma_map", 0, NULL, sparc_io_proc_show,
- &_sparc_dvma);
-#endif
-}
diff --git a/arch/sparc/kernel/of_device_32.c b/arch/sparc/kernel/of_device_32.c
index ddb3b197d5e4..99ec26782bcc 100644
--- a/arch/sparc/kernel/of_device_32.c
+++ b/arch/sparc/kernel/of_device_32.c
@@ -96,11 +96,6 @@ static unsigned long of_bus_pci_get_flags(const u32 *addr, unsigned long flags)
return flags;
}
-static unsigned long of_bus_sbus_get_flags(const u32 *addr, unsigned long flags)
-{
- return IORESOURCE_MEM;
-}
-
/*
* AMBAPP bus specific translator
*/
@@ -145,15 +140,6 @@ static struct of_bus of_busses[] = {
.map = of_bus_pci_map,
.get_flags = of_bus_pci_get_flags,
},
- /* SBUS */
- {
- .name = "sbus",
- .addr_prop_name = "reg",
- .match = of_bus_sbus_match,
- .count_cells = of_bus_sbus_count_cells,
- .map = of_bus_default_map,
- .get_flags = of_bus_sbus_get_flags,
- },
/* AMBA */
{
.name = "ambapp",
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 53693c826ebd..94f6dca5856f 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -518,7 +518,7 @@ config FB_GBE_MEM
config FB_SBUS
bool "SBUS and UPA framebuffers"
- depends on (FB = y) && SPARC
+ depends on (FB = y) && SBUS
help
Say Y if you want support for SBUS or UPA based frame buffer device.
diff --git a/sound/sparc/Kconfig b/sound/sparc/Kconfig
index 59b9f16e8dea..af2fb963a455 100644
--- a/sound/sparc/Kconfig
+++ b/sound/sparc/Kconfig
@@ -4,6 +4,7 @@
menuconfig SND_SPARC
bool "Sparc sound devices"
depends on SPARC
+ depends on SBUS
default y
help
Support for sound devices specific to Sun SPARC architectures.
--
2.34.1
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