Commit 62d06165 authored by Paul Mackerras's avatar Paul Mackerras

PPC32: Improved support for PReP platforms, forward-ported from 2.4.

parent a0e3935f
......@@ -24,6 +24,7 @@
#include <asm/machdep.h>
#include <asm/open_pic.h>
extern void (*setup_ibm_pci)(char *irq_lo, char *irq_hi);
/* Which PCI interrupt line does a given device [slot] use? */
/* Note: This really should be two dimensional based in slot/pin used */
......@@ -612,6 +613,7 @@ static unsigned char prep_pci_intpins[4][4] __prepdata =
#define ELCRM_INT7_LVL 0x80
#define ELCRM_INT5_LVL 0x20
#if 0
/*
* PCI config space access.
*/
......@@ -686,6 +688,7 @@ static struct pci_ops prep_pci_ops =
prep_read_config,
prep_write_config
};
#endif
#define MOTOROLA_CPUTYPE_REG 0x800
#define MOTOROLA_BASETYPE_REG 0x803
......@@ -695,7 +698,7 @@ static struct pci_ops prep_pci_ops =
static u_char prep_openpic_initsenses[] __initdata = {
(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* MVME2600_INT_SIO */
(IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_FALCON_ECC_ERR */
(IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_FALCN_ECC_ERR */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_ETHERNET */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_SCSI */
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_GRAPHICS */
......@@ -834,32 +837,51 @@ struct mot_info {
void __init
ibm_prep_init(void)
{
u32 addr;
#ifdef CONFIG_PREP_RESIDUAL
u32 addr, real_addr, len;
PPC_DEVICE *mpic;
#endif
PnP_TAG_PACKET *pkt;
if (inb(0x0852) == 0xd5) {
/* This is for the 43p-140 */
early_read_config_dword(0, 0, PCI_DEVFN(13, 0),
PCI_BASE_ADDRESS_0, &addr);
if (addr != 0xffffffff
&& !(addr & PCI_BASE_ADDRESS_SPACE_IO)
&& (addr &= PCI_BASE_ADDRESS_MEM_MASK) != 0) {
addr += PREP_ISA_MEM_BASE;
OpenPIC_Addr = ioremap(addr, 0x40000);
ppc_md.get_irq = openpic_get_irq;
OpenPIC_InitSenses = prep_openpic_initsenses;
OpenPIC_NumInitSenses = sizeof(prep_openpic_initsenses);
}
}
#ifdef CONFIG_PREP_RESIDUAL
/* Use the PReP residual data to determine if an OpenPIC is
* present. If so, get the large vendor packet which will
* tell us the base address and length in memory.
* If we are successful, ioremap the memory area and set
* OpenPIC_Addr (this indicates that the OpenPIC was found).
*/
mpic = residual_find_device(-1, NULL, SystemPeripheral,
ProgrammableInterruptController, MPIC, 0);
if (mpic != NULL)
printk("mpic = %p\n", mpic);
ProgrammableInterruptController, MPIC, 0);
if (!mpic)
return;
pkt = PnP_find_large_vendor_packet(res->DevicePnPHeap +
mpic->AllocatedOffset, 9, 0);
if (!pkt)
return;
#define p pkt->L4_Pack.L4_Data.L4_PPCPack
if (!((p.PPCData[0] == 2) && (p.PPCData[1] == 32)))
return; /* not a 32-bit memory address */
real_addr = ld_le32((unsigned int *) (p.PPCData + 4));
if (real_addr == 0xffffffff)
return;
/* Adjust address to be as seen by CPU */
addr = real_addr + PREP_ISA_MEM_BASE;
len = ld_le32((unsigned int *) (p.PPCData + 12));
if (!len)
return;
#undef p
OpenPIC_Addr = ioremap(addr, len);
ppc_md.get_irq = openpic_get_irq;
OpenPIC_InitSenses = prep_openpic_initsenses;
OpenPIC_NumInitSenses = sizeof(prep_openpic_initsenses);
printk(KERN_INFO "MPIC at 0x%08x (0x%08x), length 0x%08x "
"mapped to 0x%p\n", addr, real_addr, len, OpenPIC_Addr);
#endif
}
......@@ -879,6 +901,47 @@ ibm43p_pci_map_non0(struct pci_dev *dev)
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
}
void __init
prep_sandalfoot_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
{
Motherboard_map_name = "IBM 6015/7020 (Sandalfoot/Sandalbow)";
Motherboard_map = ibm6015_pci_IRQ_map;
Motherboard_routes = ibm6015_pci_IRQ_routes;
*irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
*irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
}
void __init
prep_thinkpad_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
{
Motherboard_map_name = "IBM Thinkpad 850/860";
Motherboard_map = Nobis_pci_IRQ_map;
Motherboard_routes = Nobis_pci_IRQ_routes;
*irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
*irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
}
void __init
prep_carolina_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
{
Motherboard_map_name = "IBM 7248, PowerSeries 830/850 (Carolina)";
Motherboard_map = ibm8xx_pci_IRQ_map;
Motherboard_routes = ibm8xx_pci_IRQ_routes;
*irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
*irq_edge_mask_hi = 0xA4; /* irq's 10, 13, 15 level-triggered */
}
void __init
prep_tiger1_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
{
Motherboard_map_name = "IBM 43P-140 (Tiger1)";
Motherboard_map = ibm43p_pci_IRQ_map;
Motherboard_routes = ibm43p_pci_IRQ_routes;
Motherboard_non0 = ibm43p_pci_map_non0;
*irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
*irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
}
void __init
prep_route_pci_interrupts(void)
{
......@@ -948,52 +1011,12 @@ prep_route_pci_interrupts(void)
outb( (irq_mode >> 8) & 0xff, 0x4d1 );
}
} else if ( _prep_type == _PREP_IBM ) {
unsigned char planar_id = inb(0x0852);
unsigned char irq_edge_mask_lo, irq_edge_mask_hi;
printk("IBM ID: %08x\n", planar_id);
switch(planar_id) {
case 0xff:
Motherboard_map_name = "IBM Thinkpad 850/860";
Motherboard_map = Nobis_pci_IRQ_map;
Motherboard_routes = Nobis_pci_IRQ_routes;
irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
break;
case 0xfc:
Motherboard_map_name = "IBM 6015/7020 (Sandalfoot/Sandalbow)";
Motherboard_map = ibm6015_pci_IRQ_map;
Motherboard_routes = ibm6015_pci_IRQ_routes;
irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
break;
case 0xd5:
Motherboard_map_name = "IBM 43P-140 (Tiger1)";
Motherboard_map = ibm43p_pci_IRQ_map;
Motherboard_routes = ibm43p_pci_IRQ_routes;
Motherboard_non0 = ibm43p_pci_map_non0;
irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
break;
default:
printk(KERN_ERR "Unknown IBM motherboard! Defaulting to Carolina.\n");
case 0xf0: /* PowerSeries 830/850 */
case 0xf1: /* PowerSeries 830/850 */
case 0xf2: /* PowerSeries 830/850 */
case 0xf4: /* 7248-43P */
case 0xf5: /* 7248-43P */
case 0xf6: /* 7248-43P */
case 0xf7: /* 7248-43P (missing from Carolina Tech Spec) */
Motherboard_map_name = "IBM PS830/PS850/7248 (Carolina)";
Motherboard_map = ibm8xx_pci_IRQ_map;
Motherboard_routes = ibm8xx_pci_IRQ_routes;
irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
irq_edge_mask_hi = 0xA4; /* irq's 10, 13, 15 level-triggered */
break;
}
setup_ibm_pci(&irq_edge_mask_lo, &irq_edge_mask_hi);
outb(inb(0x04d0)|irq_edge_mask_lo, 0x04d0); /* primary 8259 */
outb(inb(0x04d1)|irq_edge_mask_hi, 0x04d1); /* cascaded 8259 */
outb(inb(0x04d0)|irq_edge_mask_lo, 0x4d0); /* primary 8259 */
outb(inb(0x04d1)|irq_edge_mask_hi, 0x4d1); /* cascaded 8259 */
} else {
printk("No known machine pci routing!\n");
return;
......@@ -1151,7 +1174,6 @@ prep_pcibios_fixup(void)
struct pci_dev *dev;
extern unsigned char *Motherboard_map;
extern unsigned char *Motherboard_routes;
unsigned char i;
prep_route_pci_interrupts();
......@@ -1182,38 +1204,6 @@ prep_pcibios_fixup(void)
*/
unsigned char d = PCI_SLOT(dev->devfn);
dev->irq = Motherboard_routes[Motherboard_map[d]];
for ( i = 0 ; i <= 5 ; i++ ) {
/*
* Relocate PCI I/O resources if necessary so the
* standard 256MB BAT covers them.
*/
if ( (pci_resource_flags(dev, i) & IORESOURCE_IO) &&
(dev->resource[i].start > 0x10000000)) {
printk("Relocating PCI address %lx -> %lx\n",
dev->resource[i].start,
(dev->resource[i].start &
0x00FFFFFF)| 0x01000000);
dev->resource[i].start =
(dev->resource[i].start & 0x00FFFFFF)
| 0x01000000;
pci_write_config_dword(dev,
PCI_BASE_ADDRESS_0 + (i*0x4),
dev->resource[i].start);
dev->resource[i].end =
(dev->resource[i].end & 0x00FFFFFF)
| 0x01000000;
}
}
#if 0
/*
* If we have residual data and if it knows about this
* device ask it what the irq is.
* -- Cort
*/
ppcd = residual_find_device_id( ~0L, dev->device,
-1,-1,-1, 0);
#endif
}
}
......@@ -1270,9 +1260,8 @@ prep_find_bridges(void)
prep_init_resource(&hose->io_resource, 0, 0x007fffff, IORESOURCE_IO);
prep_init_resource(&hose->mem_resources[0], 0xc0000000, 0xfeffffff,
IORESOURCE_MEM);
/* XXX why can't we use the indirect config space access method? */
hose->cfg_data = ioremap(PREP_ISA_IO_BASE + 0x800000, 0x800000);
hose->ops = &prep_pci_ops;
setup_indirect_pci(hose, PREP_ISA_IO_BASE + 0xcf8,
PREP_ISA_IO_BASE + 0xcfc);
printk("PReP architecture\n");
#ifdef CONFIG_PREP_RESIDUAL
......
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