[27/41] ARM: omap1: use pci_remap_iospace() for omap_cf

Commit Message

Arnd Bergmann April 19, 2022, 1:37 p.m. UTC

From: Arnd Bergmann <[e-mail]>

The ISA I/O space handling in omap_cf is incompatible with
PCI drivers in a multiplatform kernel, and requires a custom
mach/io.h.

Change the driver to use pci_remap_iospace() like PCI drivers do,
so the generic ioport access can work across platforms.

To actually use that code, we have to select CONFIG_PCI
here.

Signed-off-by: Arnd Bergmann <[e-mail]>
---
 arch/arm/Kconfig                      |  2 +-
 arch/arm/mach-omap1/include/mach/io.h | 45 ---------------------------
 drivers/pcmcia/omap_cf.c              | 10 +++---
 3 files changed, 5 insertions(+), 52 deletions(-)
 delete mode 100644 arch/arm/mach-omap1/include/mach/io.h

Patch

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 700655e31b04..a57ad0928edc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -487,11 +487,11 @@  config ARCH_OMAP1
 	bool "TI OMAP1"
 	select ARCH_OMAP
 	select CLKSRC_MMIO
+	select FORCE_PCI if PCCARD
 	select GENERIC_IRQ_CHIP
 	select GPIOLIB
 	select HAVE_LEGACY_CLK
 	select IRQ_DOMAIN
-	select NEED_MACH_IO_H if PCCARD
 	select NEED_MACH_MEMORY_H
 	select SPARSE_IRQ
 	help
diff --git a/arch/arm/mach-omap1/include/mach/io.h b/arch/arm/mach-omap1/include/mach/io.h
deleted file mode 100644
index ce4f8005b26f..000000000000
--- a/arch/arm/mach-omap1/include/mach/io.h
+++ /dev/null
@@ -1,45 +0,0 @@ 
-/*
- * arch/arm/mach-omap1/include/mach/io.h
- *
- * IO definitions for TI OMAP processors and boards
- *
- * Copied from arch/arm/mach-sa1100/include/mach/io.h
- * Copyright (C) 1997-1999 Russell King
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Modifications:
- *  06-12-1997	RMK	Created.
- *  07-04-1999	RMK	Major cleanup
- */
-
-#ifndef __ASM_ARM_ARCH_IO_H
-#define __ASM_ARM_ARCH_IO_H
-
-#define IO_SPACE_LIMIT 0xffffffff
-
-/*
- * We don't actually have real ISA nor PCI buses, but there is so many
- * drivers out there that might just work if we fake them...
- */
-#define __io(a)		__typesafe_io(a)
-
-#endif
diff --git a/drivers/pcmcia/omap_cf.c b/drivers/pcmcia/omap_cf.c
index 093022ce7d91..1972a8f6fa8e 100644
--- a/drivers/pcmcia/omap_cf.c
+++ b/drivers/pcmcia/omap_cf.c
@@ -205,6 +205,7 @@  static int __init omap_cf_probe(struct platform_device *pdev)
 	int			irq;
 	int			status;
 	struct resource		*res;
+	struct resource		iospace = DEFINE_RES_IO(SZ_64, SZ_4K);
 
 	seg = (int) pdev->dev.platform_data;
 	if (seg == 0 || seg > 3)
@@ -235,9 +236,9 @@  static int __init omap_cf_probe(struct platform_device *pdev)
 	cf->phys_cf = res->start;
 
 	/* pcmcia layer only remaps "real" memory */
-	cf->socket.io_offset = (unsigned long)
-			ioremap(cf->phys_cf + SZ_4K, SZ_2K);
-	if (!cf->socket.io_offset) {
+	cf->socket.io_offset = iospace.start;
+	status = pci_remap_iospace(&iospace, cf->phys_cf + SZ_4K);
+	if (status) {
 		status = -ENOMEM;
 		goto fail1;
 	}
@@ -285,8 +286,6 @@  static int __init omap_cf_probe(struct platform_device *pdev)
 fail2:
 	release_mem_region(cf->phys_cf, SZ_8K);
 fail1:
-	if (cf->socket.io_offset)
-		iounmap((void __iomem *) cf->socket.io_offset);
 	free_irq(irq, cf);
 fail0:
 	kfree(cf);
@@ -300,7 +299,6 @@  static int __exit omap_cf_remove(struct platform_device *pdev)
 	cf->active = 0;
 	pcmcia_unregister_socket(&cf->socket);
 	del_timer_sync(&cf->timer);
-	iounmap((void __iomem *) cf->socket.io_offset);
 	release_mem_region(cf->phys_cf, SZ_8K);
 	free_irq(cf->irq, cf);
 	kfree(cf);