Commit 5040cb8b authored by Thomas Kleffel's avatar Thomas Kleffel Committed by Dominik Brodowski
Browse files

[PATCH] pcmcia: Make ide_cs work with the memory space of CF-Cards if IO space is not available



This patch enables ide_cs to access CF-cards via their common memory
rather than via their IO space.
Signed-off-by: default avatarThomas Kleffel <tk@maintech.de>
Signed-off-by: default avatarDominik Brodowski <linux@dominikbrodowski.net>
parent 59e35ba1
......@@ -146,7 +146,16 @@ static void ide_detach(struct pcmcia_device *link)
kfree(link->priv);
} /* ide_detach */
static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq, struct pcmcia_device *handle)
static void idecs_mmio_fixup(ide_hwif_t *hwif)
{
default_hwif_mmiops(hwif);
hwif->mmio = 2;
ide_undecoded_slave(hwif);
}
static int idecs_register(unsigned long io, unsigned long ctl,
unsigned long irq, struct pcmcia_device *handle, int is_mmio)
{
hw_regs_t hw;
memset(&hw, 0, sizeof(hw));
......@@ -154,7 +163,19 @@ static int idecs_register(unsigned long io, unsigned long ctl, unsigned long irq
hw.irq = irq;
hw.chipset = ide_pci;
hw.dev = &handle->dev;
return ide_register_hw_with_fixup(&hw, NULL, ide_undecoded_slave);
if(is_mmio)
return ide_register_hw_with_fixup(&hw, NULL, idecs_mmio_fixup);
else
return ide_register_hw_with_fixup(&hw, NULL, ide_undecoded_slave);
}
void outb_io(unsigned char value, unsigned long port) {
outb(value, port);
}
void outb_mem(unsigned char value, unsigned long port) {
writeb(value, (void __iomem *) port);
}
/*======================================================================
......@@ -180,7 +201,8 @@ static int ide_config(struct pcmcia_device *link)
} *stk = NULL;
cistpl_cftable_entry_t *cfg;
int i, pass, last_ret = 0, last_fn = 0, hd, is_kme = 0;
unsigned long io_base, ctl_base;
unsigned long io_base, ctl_base, is_mmio, try_slave;
void (*my_outb)(unsigned char, unsigned long);
DEBUG(0, "ide_config(0x%p)\n", link);
......@@ -210,7 +232,7 @@ static int ide_config(struct pcmcia_device *link)
/* Not sure if this is right... look up the current Vcc */
CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link, &stk->conf));
pass = io_base = ctl_base = 0;
pass = io_base = ctl_base = is_mmio = try_slave = 0;
tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
tuple.Attributes = 0;
CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple));
......@@ -258,11 +280,45 @@ static int ide_config(struct pcmcia_device *link)
goto next_entry;
io_base = link->io.BasePort1;
ctl_base = link->io.BasePort1 + 0x0e;
if (io->win[0].len >= 0x20)
try_slave = 1;
} else goto next_entry;
/* If we've got this far, we're done */
break;
}
if ((cfg->mem.nwin > 0) || (stk->dflt.mem.nwin > 0)) {
win_req_t req;
memreq_t map;
cistpl_mem_t *mem = (cfg->mem.nwin) ? &cfg->mem : &stk->dflt.mem;
if (mem->win[0].len < 16)
goto next_entry;
req.Attributes = WIN_DATA_WIDTH_16|WIN_MEMORY_TYPE_CM;
req.Attributes |= WIN_ENABLE;
req.Base = mem->win[0].host_addr;
req.Size = 0;
req.AccessSpeed = 0;
if (pcmcia_request_window(&link, &req, &link->win) != 0)
goto next_entry;
map.Page = 0; map.CardOffset = mem->win[0].card_addr;
if (pcmcia_map_mem_page(link->win, &map) != 0)
goto next_entry;
io_base = (unsigned long) ioremap(req.Base, req.Size);
ctl_base = io_base + 0x0e;
is_mmio = 1;
if (mem->win[0].len >= 0x20)
try_slave = 1;
break;
}
next_entry:
if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
memcpy(&stk->dflt, cfg, sizeof(stk->dflt));
......@@ -278,21 +334,26 @@ static int ide_config(struct pcmcia_device *link)
CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));
if(is_mmio)
my_outb = outb_mem;
else
my_outb = outb_io;
/* disable drive interrupts during IDE probe */
outb(0x02, ctl_base);
my_outb(0x02, ctl_base);
/* special setup for KXLC005 card */
if (is_kme)
outb(0x81, ctl_base+1);
my_outb(0x81, ctl_base+1);
/* retry registration in case device is still spinning up */
for (hd = -1, i = 0; i < 10; i++) {
hd = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ, link);
hd = idecs_register(io_base, ctl_base, link->irq.AssignedIRQ, link, is_mmio);
if (hd >= 0) break;
if (link->io.NumPorts1 == 0x20) {
outb(0x02, ctl_base + 0x10);
if (try_slave) {
my_outb(0x02, ctl_base + 0x10);
hd = idecs_register(io_base + 0x10, ctl_base + 0x10,
link->irq.AssignedIRQ, link);
link->irq.AssignedIRQ, link, is_mmio);
if (hd >= 0) {
io_base += 0x10;
ctl_base += 0x10;
......
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