From 645b302673bb74930b5f38f1d5b7e7532f164595 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sun, 24 Apr 2022 14:36:35 +0200 Subject: 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 --- drivers/pcmcia/soc_common.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'drivers/pcmcia/soc_common.c') 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 #include #include +#include #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: -- cgit v1.2.3