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authorArnd Bergmann <arnd@arndb.de>2022-04-24 14:36:35 +0200
committerArnd Bergmann <arnd@arndb.de>2022-05-07 22:56:17 +0200
commit645b302673bb74930b5f38f1d5b7e7532f164595 (patch)
tree0429d09bd6bef49663611bf46f1a5ae00ecf8afd /drivers/pcmcia
parentARM: pxa: remove support for MTD_XIP (diff)
downloadlinux-645b302673bb74930b5f38f1d5b7e7532f164595.tar.xz
linux-645b302673bb74930b5f38f1d5b7e7532f164595.zip
ARM: pxa/sa1100: move I/O space to PCI_IOBASE
PXA and StrongARM1100 traditionally map their I/O space 1:1 into virtual memory, using a per-bus io_offset that matches the base address of the ioremap mapping. In order for PXA to work in a multiplatform config, this needs to change so I/O space starts at PCI_IOBASE (0xfee00000). Since the pcmcia soc_common support is shared with StrongARM1100, both have to change at the same time. The affected machines are: - Anything with a PCMCIA slot now uses pci_remap_iospace, which is made available to PCMCIA configurations as well, rather than just PCI. The first PCMCIA slot now starts at port number 0x10000. - The Zeus and Viper platforms have PC/104-style ISA buses, which have a static mapping for both I/O and memory space at 0xf1000000, which can no longer work. It does not appear to have any in-tree users, so moving it to port number 0 makes them behave like a traditional PC. - SA1100 does support ISA slots in theory, but all machines that originally enabled this appear to have been removed from the tree ages ago, and the I/O space is never mapped anywhere. - The Nanoengine machine has support for PCI slots, but looks like this never included I/O space, the resources only define the location for memory and config space. With this, the definitions of __io() and IO_SPACE_LIMIT can be simplified, as the only remaining cases are the generic PCI_IOBASE and the custom inb()/outb() macros on RiscPC. S3C24xx still has a custom inb()/outb() in this here, but this is already removed in another branch. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/pcmcia')
-rw-r--r--drivers/pcmcia/soc_common.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c
index 9276a628473d..61b0c8952bb5 100644
--- a/drivers/pcmcia/soc_common.c
+++ b/drivers/pcmcia/soc_common.c
@@ -46,6 +46,7 @@
#include <linux/regulator/consumer.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
+#include <linux/pci.h>
#include "soc_common.h"
@@ -782,8 +783,7 @@ void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt)
/* should not be required; violates some lowlevel drivers */
soc_common_pcmcia_config_skt(skt, &dead_socket);
- iounmap(skt->virt_io);
- skt->virt_io = NULL;
+ iounmap(PCI_IOBASE + skt->res_io_io.start);
release_resource(&skt->res_attr);
release_resource(&skt->res_mem);
release_resource(&skt->res_io);
@@ -816,11 +816,12 @@ int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
if (ret)
goto out_err_4;
- skt->virt_io = ioremap(skt->res_io.start, 0x10000);
- if (skt->virt_io == NULL) {
- ret = -ENOMEM;
+ skt->res_io_io = (struct resource)
+ DEFINE_RES_IO_NAMED(skt->nr * 0x1000 + 0x10000, 0x1000,
+ "PCMCIA I/O");
+ ret = pci_remap_iospace(&skt->res_io_io, skt->res_io.start);
+ if (ret)
goto out_err_5;
- }
/*
* We initialize default socket timing here, because
@@ -838,7 +839,7 @@ int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
skt->socket.resource_ops = &pccard_static_ops;
skt->socket.irq_mask = 0;
skt->socket.map_size = PAGE_SIZE;
- skt->socket.io_offset = (unsigned long)skt->virt_io;
+ skt->socket.io_offset = (unsigned long)skt->res_io_io.start;
skt->status = soc_common_pcmcia_skt_state(skt);
@@ -872,7 +873,7 @@ int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
out_err_7:
soc_pcmcia_hw_shutdown(skt);
out_err_6:
- iounmap(skt->virt_io);
+ iounmap(PCI_IOBASE + skt->res_io_io.start);
out_err_5:
release_resource(&skt->res_attr);
out_err_4: