Commit 96173a6c authored by Thomas Bogendoerfer's avatar Thomas Bogendoerfer Committed by Ralf Baechle

[MIPS] IP27: misc fixes

- fix PCI interrupt assignment by emulating ioc3 interrupt pin register
- use pci_probe_only mode
- select correct page size in bridge
- remove no longer needed ioc3_sio_init() code

[Ralf: Fix for 64kB or larger pagesizes]
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent b32bb803
......@@ -13,6 +13,22 @@
#include <asm/sn/intr.h>
#include <asm/sn/sn0/hub.h>
/*
* Most of the IOC3 PCI config register aren't present
* we emulate what is needed for a normal PCI enumeration
*/
static u32 emulate_ioc3_cfg(int where, int size)
{
if (size == 1 && where == 0x3d)
return 0x01;
else if (size == 2 && where == 0x3c)
return 0x0100;
else if (size == 4 && where == 0x3c)
return 0x00000100;
return 0;
}
/*
* The Bridge ASIC supports both type 0 and type 1 access. Type 1 is
* not really documented, so right now I can't write code which uses it.
......@@ -64,7 +80,7 @@ static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn,
* generic PCI code a chance to look at the wrong register.
*/
if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
*value = 0;
*value = emulate_ioc3_cfg(where, size);
return PCIBIOS_SUCCESSFUL;
}
......@@ -127,7 +143,7 @@ static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn,
* generic PCI code a chance to look at the wrong register.
*/
if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) {
*value = 0;
*value = emulate_ioc3_cfg(where, size);
return PCIBIOS_SUCCESSFUL;
}
......
......@@ -47,6 +47,9 @@ int __cpuinit bridge_probe(nasid_t nasid, int widget_id, int masterwid)
static int num_bridges = 0;
bridge_t *bridge;
int slot;
extern int pci_probe_only;
pci_probe_only = 1;
printk("a bridge\n");
......@@ -100,6 +103,11 @@ int __cpuinit bridge_probe(nasid_t nasid, int widget_id, int masterwid)
*/
bridge->b_wid_control |= BRIDGE_CTRL_IO_SWAP |
BRIDGE_CTRL_MEM_SWAP;
#ifdef CONFIG_PAGE_SIZE_4KB
bridge->b_wid_control &= ~BRIDGE_CTRL_PAGE_SIZE;
#else /* 16kB or larger */
bridge->b_wid_control |= BRIDGE_CTRL_PAGE_SIZE;
#endif
/*
* Hmm... IRIX sets additional bits in the address which
......
......@@ -161,27 +161,6 @@ cnodeid_t get_compact_nodeid(void)
return NASID_TO_COMPACT_NODEID(get_nasid());
}
/* Extracted from the IOC3 meta driver. FIXME. */
static inline void ioc3_sio_init(void)
{
struct ioc3 *ioc3;
nasid_t nid;
long loops;
nid = get_nasid();
ioc3 = (struct ioc3 *) KL_CONFIG_CH_CONS_INFO(nid)->memory_base;
ioc3->sscr_a = 0; /* PIO mode for uarta. */
ioc3->sscr_b = 0; /* PIO mode for uartb. */
ioc3->sio_iec = ~0;
ioc3->sio_ies = (SIO_IR_SA_INT | SIO_IR_SB_INT);
loops=1000000; while(loops--);
ioc3->sregs.uarta.iu_fcr = 0;
ioc3->sregs.uartb.iu_fcr = 0;
loops=1000000; while(loops--);
}
static inline void ioc3_eth_init(void)
{
struct ioc3 *ioc3;
......@@ -234,7 +213,6 @@ void __init plat_mem_setup(void)
panic("Kernel compiled for N mode.");
#endif
ioc3_sio_init();
ioc3_eth_init();
per_cpu_init();
......
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