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linux-sg2042/arch/alpha/kernel/core_wildfire.c

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/*
* linux/arch/alpha/kernel/core_wildfire.c
*
* Wildfire support.
*
* Copyright (C) 2000 Andrea Arcangeli <andrea@suse.de> SuSE
*/
#define __EXTERN_INLINE inline
#include <asm/io.h>
#include <asm/core_wildfire.h>
#undef __EXTERN_INLINE
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <asm/ptrace.h>
#include <asm/smp.h>
#include "proto.h"
#include "pci_impl.h"
#define DEBUG_CONFIG 0
#define DEBUG_DUMP_REGS 0
#define DEBUG_DUMP_CONFIG 1
#if DEBUG_CONFIG
# define DBG_CFG(args) printk args
#else
# define DBG_CFG(args)
#endif
#if DEBUG_DUMP_REGS
static void wildfire_dump_pci_regs(int qbbno, int hoseno);
static void wildfire_dump_pca_regs(int qbbno, int pcano);
static void wildfire_dump_qsa_regs(int qbbno);
static void wildfire_dump_qsd_regs(int qbbno);
static void wildfire_dump_iop_regs(int qbbno);
static void wildfire_dump_gp_regs(int qbbno);
#endif
#if DEBUG_DUMP_CONFIG
static void wildfire_dump_hardware_config(void);
#endif
unsigned char wildfire_hard_qbb_map[WILDFIRE_MAX_QBB];
unsigned char wildfire_soft_qbb_map[WILDFIRE_MAX_QBB];
#define QBB_MAP_EMPTY 0xff
unsigned long wildfire_hard_qbb_mask;
unsigned long wildfire_soft_qbb_mask;
unsigned long wildfire_gp_mask;
unsigned long wildfire_hs_mask;
unsigned long wildfire_iop_mask;
unsigned long wildfire_ior_mask;
unsigned long wildfire_pca_mask;
unsigned long wildfire_cpu_mask;
unsigned long wildfire_mem_mask;
void __init
wildfire_init_hose(int qbbno, int hoseno)
{
struct pci_controller *hose;
wildfire_pci *pci;
hose = alloc_pci_controller();
hose->io_space = alloc_resource();
hose->mem_space = alloc_resource();
/* This is for userland consumption. */
hose->sparse_mem_base = 0;
hose->sparse_io_base = 0;
hose->dense_mem_base = WILDFIRE_MEM(qbbno, hoseno);
hose->dense_io_base = WILDFIRE_IO(qbbno, hoseno);
hose->config_space_base = WILDFIRE_CONF(qbbno, hoseno);
hose->index = (qbbno << 3) + hoseno;
hose->io_space->start = WILDFIRE_IO(qbbno, hoseno) - WILDFIRE_IO_BIAS;
hose->io_space->end = hose->io_space->start + WILDFIRE_IO_SPACE - 1;
hose->io_space->name = pci_io_names[hoseno];
hose->io_space->flags = IORESOURCE_IO;
hose->mem_space->start = WILDFIRE_MEM(qbbno, hoseno)-WILDFIRE_MEM_BIAS;
hose->mem_space->end = hose->mem_space->start + 0xffffffff;
hose->mem_space->name = pci_mem_names[hoseno];
hose->mem_space->flags = IORESOURCE_MEM;
if (request_resource(&ioport_resource, hose->io_space) < 0)
printk(KERN_ERR "Failed to request IO on qbb %d hose %d\n",
qbbno, hoseno);
if (request_resource(&iomem_resource, hose->mem_space) < 0)
printk(KERN_ERR "Failed to request MEM on qbb %d hose %d\n",
qbbno, hoseno);
#if DEBUG_DUMP_REGS
wildfire_dump_pci_regs(qbbno, hoseno);
#endif
/*
* Set up the PCI to main memory translation windows.
*
* Note: Window 3 is scatter-gather only
*
* Window 0 is scatter-gather 8MB at 8MB (for isa)
* Window 1 is direct access 1GB at 1GB
* Window 2 is direct access 1GB at 2GB
* Window 3 is scatter-gather 128MB at 3GB
* ??? We ought to scale window 3 memory.
*
*/
hose->sg_isa = iommu_arena_new(hose, 0x00800000, 0x00800000, 0);
hose->sg_pci = iommu_arena_new(hose, 0xc0000000, 0x08000000, 0);
pci = WILDFIRE_pci(qbbno, hoseno);
pci->pci_window[0].wbase.csr = hose->sg_isa->dma_base | 3;
pci->pci_window[0].wmask.csr = (hose->sg_isa->size - 1) & 0xfff00000;
pci->pci_window[0].tbase.csr = virt_to_phys(hose->sg_isa->ptes);
pci->pci_window[1].wbase.csr = 0x40000000 | 1;
pci->pci_window[1].wmask.csr = (0x40000000 -1) & 0xfff00000;
pci->pci_window[1].tbase.csr = 0;
pci->pci_window[2].wbase.csr = 0x80000000 | 1;
pci->pci_window[2].wmask.csr = (0x40000000 -1) & 0xfff00000;
pci->pci_window[2].tbase.csr = 0x40000000;
pci->pci_window[3].wbase.csr = hose->sg_pci->dma_base | 3;
pci->pci_window[3].wmask.csr = (hose->sg_pci->size - 1) & 0xfff00000;
pci->pci_window[3].tbase.csr = virt_to_phys(hose->sg_pci->ptes);
wildfire_pci_tbi(hose, 0, 0); /* Flush TLB at the end. */
}
void __init
wildfire_init_pca(int qbbno, int pcano)
{
/* Test for PCA existence first. */
if (!WILDFIRE_PCA_EXISTS(qbbno, pcano))
return;
#if DEBUG_DUMP_REGS
wildfire_dump_pca_regs(qbbno, pcano);
#endif
/* Do both hoses of the PCA. */
wildfire_init_hose(qbbno, (pcano << 1) + 0);
wildfire_init_hose(qbbno, (pcano << 1) + 1);
}
void __init
wildfire_init_qbb(int qbbno)
{
int pcano;
/* Test for QBB existence first. */
if (!WILDFIRE_QBB_EXISTS(qbbno))
return;
#if DEBUG_DUMP_REGS
wildfire_dump_qsa_regs(qbbno);
wildfire_dump_qsd_regs(qbbno);
wildfire_dump_iop_regs(qbbno);
wildfire_dump_gp_regs(qbbno);
#endif
/* Init all PCAs here. */
for (pcano = 0; pcano < WILDFIRE_PCA_PER_QBB; pcano++) {
wildfire_init_pca(qbbno, pcano);
}
}
void __init
wildfire_hardware_probe(void)
{
unsigned long temp;
unsigned int hard_qbb, soft_qbb;
wildfire_fast_qsd *fast = WILDFIRE_fast_qsd();
wildfire_qsd *qsd;
wildfire_qsa *qsa;
wildfire_iop *iop;
wildfire_gp *gp;
wildfire_ne *ne;
wildfire_fe *fe;
int i;
temp = fast->qsd_whami.csr;
#if 0
printk(KERN_ERR "fast QSD_WHAMI at base %p is 0x%lx\n", fast, temp);
#endif
hard_qbb = (temp >> 8) & 7;
soft_qbb = (temp >> 4) & 7;
/* Init the HW configuration variables. */
wildfire_hard_qbb_mask = (1 << hard_qbb);
wildfire_soft_qbb_mask = (1 << soft_qbb);
wildfire_gp_mask = 0;
wildfire_hs_mask = 0;
wildfire_iop_mask = 0;
wildfire_ior_mask = 0;
wildfire_pca_mask = 0;
wildfire_cpu_mask = 0;
wildfire_mem_mask = 0;
memset(wildfire_hard_qbb_map, QBB_MAP_EMPTY, WILDFIRE_MAX_QBB);
memset(wildfire_soft_qbb_map, QBB_MAP_EMPTY, WILDFIRE_MAX_QBB);
/* First, determine which QBBs are present. */
qsa = WILDFIRE_qsa(soft_qbb);
temp = qsa->qsa_qbb_id.csr;
#if 0
printk(KERN_ERR "QSA_QBB_ID at base %p is 0x%lx\n", qsa, temp);
#endif
if (temp & 0x40) /* Is there an HS? */
wildfire_hs_mask = 1;
if (temp & 0x20) { /* Is there a GP? */
gp = WILDFIRE_gp(soft_qbb);
temp = 0;
for (i = 0; i < 4; i++) {
temp |= gp->gpa_qbb_map[i].csr << (i * 8);
#if 0
printk(KERN_ERR "GPA_QBB_MAP[%d] at base %p is 0x%lx\n",
i, gp, temp);
#endif
}
for (hard_qbb = 0; hard_qbb < WILDFIRE_MAX_QBB; hard_qbb++) {
if (temp & 8) { /* Is there a QBB? */
soft_qbb = temp & 7;
wildfire_hard_qbb_mask |= (1 << hard_qbb);
wildfire_soft_qbb_mask |= (1 << soft_qbb);
}
temp >>= 4;
}
wildfire_gp_mask = wildfire_soft_qbb_mask;
}
/* Next determine each QBBs resources. */
for (soft_qbb = 0; soft_qbb < WILDFIRE_MAX_QBB; soft_qbb++) {
if (WILDFIRE_QBB_EXISTS(soft_qbb)) {
qsd = WILDFIRE_qsd(soft_qbb);
temp = qsd->qsd_whami.csr;
#if 0
printk(KERN_ERR "QSD_WHAMI at base %p is 0x%lx\n", qsd, temp);
#endif
hard_qbb = (temp >> 8) & 7;
wildfire_hard_qbb_map[hard_qbb] = soft_qbb;
wildfire_soft_qbb_map[soft_qbb] = hard_qbb;
qsa = WILDFIRE_qsa(soft_qbb);
temp = qsa->qsa_qbb_pop[0].csr;
#if 0
printk(KERN_ERR "QSA_QBB_POP_0 at base %p is 0x%lx\n", qsa, temp);
#endif
wildfire_cpu_mask |= ((temp >> 0) & 0xf) << (soft_qbb << 2);
wildfire_mem_mask |= ((temp >> 4) & 0xf) << (soft_qbb << 2);
temp = qsa->qsa_qbb_pop[1].csr;
#if 0
printk(KERN_ERR "QSA_QBB_POP_1 at base %p is 0x%lx\n", qsa, temp);
#endif
wildfire_iop_mask |= (1 << soft_qbb);
wildfire_ior_mask |= ((temp >> 4) & 0xf) << (soft_qbb << 2);
temp = qsa->qsa_qbb_id.csr;
#if 0
printk(KERN_ERR "QSA_QBB_ID at %p is 0x%lx\n", qsa, temp);
#endif
if (temp & 0x20)
wildfire_gp_mask |= (1 << soft_qbb);
/* Probe for PCA existence here. */
for (i = 0; i < WILDFIRE_PCA_PER_QBB; i++) {
iop = WILDFIRE_iop(soft_qbb);
ne = WILDFIRE_ne(soft_qbb, i);
fe = WILDFIRE_fe(soft_qbb, i);
if ((iop->iop_hose[i].init.csr & 1) == 1 &&
((ne->ne_what_am_i.csr & 0xf00000300UL) == 0x100000300UL) &&
((fe->fe_what_am_i.csr & 0xf00000300UL) == 0x100000200UL))
{
wildfire_pca_mask |= 1 << ((soft_qbb << 2) + i);
}
}
}
}
#if DEBUG_DUMP_CONFIG
wildfire_dump_hardware_config();
#endif
}
void __init
wildfire_init_arch(void)
{
int qbbno;
/* With multiple PCI buses, we play with I/O as physical addrs. */
ioport_resource.end = ~0UL;
/* Probe the hardware for info about configuration. */
wildfire_hardware_probe();
/* Now init all the found QBBs. */
for (qbbno = 0; qbbno < WILDFIRE_MAX_QBB; qbbno++) {
wildfire_init_qbb(qbbno);
}
/* Normal direct PCI DMA mapping. */
__direct_map_base = 0x40000000UL;
__direct_map_size = 0x80000000UL;
}
void
wildfire_machine_check(unsigned long vector, unsigned long la_ptr)
{
mb();
mb(); /* magic */
draina();
/* FIXME: clear pci errors */
wrmces(0x7);
mb();
process_mcheck_info(vector, la_ptr, "WILDFIRE",
mcheck_expected(smp_processor_id()));
}
void
wildfire_kill_arch(int mode)
{
}
void
wildfire_pci_tbi(struct pci_controller *hose, dma_addr_t start, dma_addr_t end)
{
int qbbno = hose->index >> 3;
int hoseno = hose->index & 7;
wildfire_pci *pci = WILDFIRE_pci(qbbno, hoseno);
mb();
pci->pci_flush_tlb.csr; /* reading does the trick */
}
static int
mk_conf_addr(struct pci_bus *pbus, unsigned int device_fn, int where,
unsigned long *pci_addr, unsigned char *type1)
{
struct pci_controller *hose = pbus->sysdata;
unsigned long addr;
u8 bus = pbus->number;
DBG_CFG(("mk_conf_addr(bus=%d ,device_fn=0x%x, where=0x%x, "
"pci_addr=0x%p, type1=0x%p)\n",
bus, device_fn, where, pci_addr, type1));
if (!pbus->parent) /* No parent means peer PCI bus. */
bus = 0;
*type1 = (bus != 0);
addr = (bus << 16) | (device_fn << 8) | where;
addr |= hose->config_space_base;
*pci_addr = addr;
DBG_CFG(("mk_conf_addr: returning pci_addr 0x%lx\n", addr));
return 0;
}
static int
wildfire_read_config(struct pci_bus *bus, unsigned int devfn, int where,
int size, u32 *value)
{
unsigned long addr;
unsigned char type1;
if (mk_conf_addr(bus, devfn, where, &addr, &type1))
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1:
*value = __kernel_ldbu(*(vucp)addr);
break;
case 2:
*value = __kernel_ldwu(*(vusp)addr);
break;
case 4:
*value = *(vuip)addr;
break;
}
return PCIBIOS_SUCCESSFUL;
}
static int
wildfire_write_config(struct pci_bus *bus, unsigned int devfn, int where,
int size, u32 value)
{
unsigned long addr;
unsigned char type1;
if (mk_conf_addr(bus, devfn, where, &addr, &type1))
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1:
__kernel_stb(value, *(vucp)addr);
mb();
__kernel_ldbu(*(vucp)addr);
break;
case 2:
__kernel_stw(value, *(vusp)addr);
mb();
__kernel_ldwu(*(vusp)addr);
break;
case 4:
*(vuip)addr = value;
mb();
*(vuip)addr;
break;
}
return PCIBIOS_SUCCESSFUL;
}
struct pci_ops wildfire_pci_ops =
{
.read = wildfire_read_config,
.write = wildfire_write_config,
};
/*
* NUMA Support
*/
int wildfire_pa_to_nid(unsigned long pa)
{
return pa >> 36;
}
int wildfire_cpuid_to_nid(int cpuid)
{
/* assume 4 CPUs per node */
return cpuid >> 2;
}
unsigned long wildfire_node_mem_start(int nid)
{
/* 64GB per node */
return (unsigned long)nid * (64UL * 1024 * 1024 * 1024);
}
unsigned long wildfire_node_mem_size(int nid)
{
/* 64GB per node */
return 64UL * 1024 * 1024 * 1024;
}
#if DEBUG_DUMP_REGS
static void __init
wildfire_dump_pci_regs(int qbbno, int hoseno)
{
wildfire_pci *pci = WILDFIRE_pci(qbbno, hoseno);
int i;
printk(KERN_ERR "PCI registers for QBB %d hose %d (%p)\n",
qbbno, hoseno, pci);
printk(KERN_ERR " PCI_IO_ADDR_EXT: 0x%16lx\n",
pci->pci_io_addr_ext.csr);
printk(KERN_ERR " PCI_CTRL: 0x%16lx\n", pci->pci_ctrl.csr);
printk(KERN_ERR " PCI_ERR_SUM: 0x%16lx\n", pci->pci_err_sum.csr);
printk(KERN_ERR " PCI_ERR_ADDR: 0x%16lx\n", pci->pci_err_addr.csr);
printk(KERN_ERR " PCI_STALL_CNT: 0x%16lx\n", pci->pci_stall_cnt.csr);
printk(KERN_ERR " PCI_PEND_INT: 0x%16lx\n", pci->pci_pend_int.csr);
printk(KERN_ERR " PCI_SENT_INT: 0x%16lx\n", pci->pci_sent_int.csr);
printk(KERN_ERR " DMA window registers for QBB %d hose %d (%p)\n",
qbbno, hoseno, pci);
for (i = 0; i < 4; i++) {
printk(KERN_ERR " window %d: 0x%16lx 0x%16lx 0x%16lx\n", i,
pci->pci_window[i].wbase.csr,
pci->pci_window[i].wmask.csr,
pci->pci_window[i].tbase.csr);
}
printk(KERN_ERR "\n");
}
static void __init
wildfire_dump_pca_regs(int qbbno, int pcano)
{
wildfire_pca *pca = WILDFIRE_pca(qbbno, pcano);
int i;
printk(KERN_ERR "PCA registers for QBB %d PCA %d (%p)\n",
qbbno, pcano, pca);
printk(KERN_ERR " PCA_WHAT_AM_I: 0x%16lx\n", pca->pca_what_am_i.csr);
printk(KERN_ERR " PCA_ERR_SUM: 0x%16lx\n", pca->pca_err_sum.csr);
printk(KERN_ERR " PCA_PEND_INT: 0x%16lx\n", pca->pca_pend_int.csr);
printk(KERN_ERR " PCA_SENT_INT: 0x%16lx\n", pca->pca_sent_int.csr);
printk(KERN_ERR " PCA_STDIO_EL: 0x%16lx\n",
pca->pca_stdio_edge_level.csr);
printk(KERN_ERR " PCA target registers for QBB %d PCA %d (%p)\n",
qbbno, pcano, pca);
for (i = 0; i < 4; i++) {
printk(KERN_ERR " target %d: 0x%16lx 0x%16lx\n", i,
pca->pca_int[i].target.csr,
pca->pca_int[i].enable.csr);
}
printk(KERN_ERR "\n");
}
static void __init
wildfire_dump_qsa_regs(int qbbno)
{
wildfire_qsa *qsa = WILDFIRE_qsa(qbbno);
int i;
printk(KERN_ERR "QSA registers for QBB %d (%p)\n", qbbno, qsa);
printk(KERN_ERR " QSA_QBB_ID: 0x%16lx\n", qsa->qsa_qbb_id.csr);
printk(KERN_ERR " QSA_PORT_ENA: 0x%16lx\n", qsa->qsa_port_ena.csr);
printk(KERN_ERR " QSA_REF_INT: 0x%16lx\n", qsa->qsa_ref_int.csr);
for (i = 0; i < 5; i++)
printk(KERN_ERR " QSA_CONFIG_%d: 0x%16lx\n",
i, qsa->qsa_config[i].csr);
for (i = 0; i < 2; i++)
printk(KERN_ERR " QSA_QBB_POP_%d: 0x%16lx\n",
i, qsa->qsa_qbb_pop[0].csr);
printk(KERN_ERR "\n");
}
static void __init
wildfire_dump_qsd_regs(int qbbno)
{
wildfire_qsd *qsd = WILDFIRE_qsd(qbbno);
printk(KERN_ERR "QSD registers for QBB %d (%p)\n", qbbno, qsd);
printk(KERN_ERR " QSD_WHAMI: 0x%16lx\n", qsd->qsd_whami.csr);
printk(KERN_ERR " QSD_REV: 0x%16lx\n", qsd->qsd_rev.csr);
printk(KERN_ERR " QSD_PORT_PRESENT: 0x%16lx\n",
qsd->qsd_port_present.csr);
printk(KERN_ERR " QSD_PORT_ACTUVE: 0x%16lx\n",
qsd->qsd_port_active.csr);
printk(KERN_ERR " QSD_FAULT_ENA: 0x%16lx\n",
qsd->qsd_fault_ena.csr);
printk(KERN_ERR " QSD_CPU_INT_ENA: 0x%16lx\n",
qsd->qsd_cpu_int_ena.csr);
printk(KERN_ERR " QSD_MEM_CONFIG: 0x%16lx\n",
qsd->qsd_mem_config.csr);
printk(KERN_ERR " QSD_ERR_SUM: 0x%16lx\n",
qsd->qsd_err_sum.csr);
printk(KERN_ERR "\n");
}
static void __init
wildfire_dump_iop_regs(int qbbno)
{
wildfire_iop *iop = WILDFIRE_iop(qbbno);
int i;
printk(KERN_ERR "IOP registers for QBB %d (%p)\n", qbbno, iop);
printk(KERN_ERR " IOA_CONFIG: 0x%16lx\n", iop->ioa_config.csr);
printk(KERN_ERR " IOD_CONFIG: 0x%16lx\n", iop->iod_config.csr);
printk(KERN_ERR " IOP_SWITCH_CREDITS: 0x%16lx\n",
iop->iop_switch_credits.csr);
printk(KERN_ERR " IOP_HOSE_CREDITS: 0x%16lx\n",
iop->iop_hose_credits.csr);
for (i = 0; i < 4; i++)
printk(KERN_ERR " IOP_HOSE_%d_INIT: 0x%16lx\n",
i, iop->iop_hose[i].init.csr);
for (i = 0; i < 4; i++)
printk(KERN_ERR " IOP_DEV_INT_TARGET_%d: 0x%16lx\n",
i, iop->iop_dev_int[i].target.csr);
printk(KERN_ERR "\n");
}
static void __init
wildfire_dump_gp_regs(int qbbno)
{
wildfire_gp *gp = WILDFIRE_gp(qbbno);
int i;
printk(KERN_ERR "GP registers for QBB %d (%p)\n", qbbno, gp);
for (i = 0; i < 4; i++)
printk(KERN_ERR " GPA_QBB_MAP_%d: 0x%16lx\n",
i, gp->gpa_qbb_map[i].csr);
printk(KERN_ERR " GPA_MEM_POP_MAP: 0x%16lx\n",
gp->gpa_mem_pop_map.csr);
printk(KERN_ERR " GPA_SCRATCH: 0x%16lx\n", gp->gpa_scratch.csr);
printk(KERN_ERR " GPA_DIAG: 0x%16lx\n", gp->gpa_diag.csr);
printk(KERN_ERR " GPA_CONFIG_0: 0x%16lx\n", gp->gpa_config_0.csr);
printk(KERN_ERR " GPA_INIT_ID: 0x%16lx\n", gp->gpa_init_id.csr);
printk(KERN_ERR " GPA_CONFIG_2: 0x%16lx\n", gp->gpa_config_2.csr);
printk(KERN_ERR "\n");
}
#endif /* DUMP_REGS */
#if DEBUG_DUMP_CONFIG
static void __init
wildfire_dump_hardware_config(void)
{
int i;
printk(KERN_ERR "Probed Hardware Configuration\n");
printk(KERN_ERR " hard_qbb_mask: 0x%16lx\n", wildfire_hard_qbb_mask);
printk(KERN_ERR " soft_qbb_mask: 0x%16lx\n", wildfire_soft_qbb_mask);
printk(KERN_ERR " gp_mask: 0x%16lx\n", wildfire_gp_mask);
printk(KERN_ERR " hs_mask: 0x%16lx\n", wildfire_hs_mask);
printk(KERN_ERR " iop_mask: 0x%16lx\n", wildfire_iop_mask);
printk(KERN_ERR " ior_mask: 0x%16lx\n", wildfire_ior_mask);
printk(KERN_ERR " pca_mask: 0x%16lx\n", wildfire_pca_mask);
printk(KERN_ERR " cpu_mask: 0x%16lx\n", wildfire_cpu_mask);
printk(KERN_ERR " mem_mask: 0x%16lx\n", wildfire_mem_mask);
printk(" hard_qbb_map: ");
for (i = 0; i < WILDFIRE_MAX_QBB; i++)
if (wildfire_hard_qbb_map[i] == QBB_MAP_EMPTY)
printk("--- ");
else
printk("%3d ", wildfire_hard_qbb_map[i]);
printk("\n");
printk(" soft_qbb_map: ");
for (i = 0; i < WILDFIRE_MAX_QBB; i++)
if (wildfire_soft_qbb_map[i] == QBB_MAP_EMPTY)
printk("--- ");
else
printk("%3d ", wildfire_soft_qbb_map[i]);
printk("\n");
}
#endif /* DUMP_CONFIG */
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