lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[MIPS] New files for lemote fulong mini-PC support

Browse Source 
Signed-off-by: Fuxin Zhang <zhangfx@lemote.com>
Signed-off-by: Songmao Tian <tiansm@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Songmao Tian
2007-06-06 14:52:38 +08:00
committed by Ralf Baechle
parent 2a21c7300b
commit 42d226c724
19 changed files with 2931 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
arch/mips/pci/ops-bonito64.c
View File

@@ -29,83 +29,60 @@
#define PCI_ACCESS_READ 0
#define PCI_ACCESS_WRITE 1
/*
* PCI configuration cycle AD bus definition
*/
/* Type 0 */
#define PCI_CFG_TYPE0_REG_SHF 0
#define PCI_CFG_TYPE0_FUNC_SHF 8
#ifdef CONFIG_LEMOTE_FULONG
#define CFG_SPACE_REG(offset) (void *)CKSEG1ADDR(BONITO_PCICFG_BASE | (offset))
#define ID_SEL_BEGIN 11
#else
#define CFG_SPACE_REG(offset) (void *)CKSEG1ADDR(_pcictrl_bonito_pcicfg + (offset))
#define ID_SEL_BEGIN 10
#endif
#define MAX_DEV_NUM (31 - ID_SEL_BEGIN)
/* Type 1 */
#define PCI_CFG_TYPE1_REG_SHF 0
#define PCI_CFG_TYPE1_FUNC_SHF 8
#define PCI_CFG_TYPE1_DEV_SHF 11
#define PCI_CFG_TYPE1_BUS_SHF 16
static int bonito64_pcibios_config_access(unsigned char access_type,
struct pci_bus *bus,
unsigned int devfn, int where,
u32 * data)
{
unsigned char busnum = bus->number;
u32 busnum = bus->number;
u32 addr, type;
u32 dummy;
u64 pci_addr;
/* Algorithmics Bonito64 system controller. */
if ((busnum == 0) && (PCI_SLOT(devfn) > 21)) {
/* We number bus 0 devices from 0..21 */
return -1;
}
/* Clear cause register bits */
BONITO_PCICMD |= (BONITO_PCICMD_MABORT_CLR |
BONITO_PCICMD_MTABORT_CLR);
/*
* Setup pattern to be used as PCI "address" for
* Type 0 cycle
*/
if (busnum == 0) {
/* IDSEL */
pci_addr = (u64) 1 << (PCI_SLOT(devfn) + 10);
} else {
/* Bus number */
pci_addr = busnum << PCI_CFG_TYPE1_BUS_SHF;
/* Device number */
pci_addr |=
PCI_SLOT(devfn) << PCI_CFG_TYPE1_DEV_SHF;
}
/* Function (same for Type 0/1) */
pci_addr |= PCI_FUNC(devfn) << PCI_CFG_TYPE0_FUNC_SHF;
/* Register number (same for Type 0/1) */
pci_addr |= (where & ~0x3) << PCI_CFG_TYPE0_REG_SHF;
void *addrp;
int device = PCI_SLOT(devfn);
int function = PCI_FUNC(devfn);
int reg = where & ~3;
if (busnum == 0) {
/* Type 0 */
BONITO_PCIMAP_CFG = pci_addr >> 16;
/* Type 0 configuration for onboard PCI bus */
if (device > MAX_DEV_NUM)
return -1;
addr = (1 << (device + ID_SEL_BEGIN)) | (function << 8) | reg;
type = 0;
} else {
/* Type 1 */
BONITO_PCIMAP_CFG = (pci_addr >> 16) | 0x10000;
/* Type 1 configuration for offboard PCI bus */
addr = (busnum << 16) | (device << 11) | (function << 8) | reg;
type = 0x10000;
}
pci_addr &= 0xffff;
/* Clear aborts */
BONITO_PCICMD |= BONITO_PCICMD_MABORT_CLR | BONITO_PCICMD_MTABORT_CLR;
BONITO_PCIMAP_CFG = (addr >> 16) | type;
/* Flush Bonito register block */
dummy = BONITO_PCIMAP_CFG;
iob(); /* sync */
mmiowb();
/* Perform access */
addrp = CFG_SPACE_REG(addr & 0xffff);
if (access_type == PCI_ACCESS_WRITE) {
*(volatile u32 *) (_pcictrl_bonito_pcicfg + (u32)pci_addr) = *(u32 *) data;
writel(cpu_to_le32(*data), addrp);
#ifndef CONFIG_LEMOTE_FULONG
/* Wait till done */
while (BONITO_PCIMSTAT & 0xF);
#endif
} else {
*(u32 *) data = *(volatile u32 *) (_pcictrl_bonito_pcicfg + (u32)pci_addr);
*data = le32_to_cpu(readl(addrp));
}
/* Detect Master/Target abort */
@@ -121,6 +98,7 @@ static int bonito64_pcibios_config_access(unsigned char access_type,
}
return 0;
}