/* pci_schizo.c: SCHIZO/TOMATILLO specific PCI controller support.
*
- * Copyright (C) 2001, 2002, 2003, 2007 David S. Miller (davem@davemloft.net)
+ * Copyright (C) 2001, 2002, 2003, 2007, 2008 David S. Miller (davem@davemloft.net)
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
+#include <linux/of_device.h>
#include <asm/iommu.h>
#include <asm/irq.h>
-#include <asm/upa.h>
#include <asm/pstate.h>
#include <asm/prom.h>
-#include <asm/of_device.h>
-#include <asm/oplib.h>
#include "pci_impl.h"
#include "iommu_common.h"
+#define DRIVER_NAME "schizo"
+#define PFX DRIVER_NAME ": "
+
/* All SCHIZO registers are 64-bits. The following accessor
* routines are how they are accessed. The REG parameter
* is a physical address.
spin_unlock_irqrestore(&iommu->lock, flags);
}
-static void schizo_check_iommu_error(struct pci_controller_info *p,
+static void schizo_check_iommu_error(struct pci_pbm_info *pbm,
enum schizo_error_type type)
{
- schizo_check_iommu_error_pbm(&p->pbm_A, type);
- schizo_check_iommu_error_pbm(&p->pbm_B, type);
+ schizo_check_iommu_error_pbm(pbm, type);
+ if (pbm->sibling)
+ schizo_check_iommu_error_pbm(pbm->sibling, type);
}
/* Uncorrectable ECC error status gathering. */
static irqreturn_t schizo_ue_intr(int irq, void *dev_id)
{
struct pci_pbm_info *pbm = dev_id;
- struct pci_controller_info *p = pbm->parent;
unsigned long afsr_reg = pbm->controller_regs + SCHIZO_UE_AFSR;
unsigned long afar_reg = pbm->controller_regs + SCHIZO_UE_AFAR;
unsigned long afsr, afar, error_bits;
printk("]\n");
/* Interrogate IOMMU for error status. */
- schizo_check_iommu_error(p, UE_ERR);
+ schizo_check_iommu_error(pbm, UE_ERR);
return IRQ_HANDLED;
}
static irqreturn_t schizo_pcierr_intr(int irq, void *dev_id)
{
struct pci_pbm_info *pbm = dev_id;
- struct pci_controller_info *p = pbm->parent;
unsigned long afsr_reg, afar_reg, base;
unsigned long afsr, afar, error_bits;
int reported;
* a bug in the IOMMU support code or a PCI device driver.
*/
if (error_bits & (SCHIZO_PCIAFSR_PTA | SCHIZO_PCIAFSR_STA)) {
- schizo_check_iommu_error(p, PCI_ERR);
+ schizo_check_iommu_error(pbm, PCI_ERR);
pci_scan_for_target_abort(pbm, pbm->pci_bus);
}
if (error_bits & (SCHIZO_PCIAFSR_PMA | SCHIZO_PCIAFSR_SMA))
static irqreturn_t schizo_safarierr_intr(int irq, void *dev_id)
{
struct pci_pbm_info *pbm = dev_id;
- struct pci_controller_info *p = pbm->parent;
u64 errlog;
errlog = schizo_read(pbm->controller_regs + SCHIZO_SAFARI_ERRLOG);
printk("%s: Safari/JBUS interrupt, UNMAPPED error, interrogating IOMMUs.\n",
pbm->name);
- schizo_check_iommu_error(p, SAFARI_ERR);
+ schizo_check_iommu_error(pbm, SAFARI_ERR);
return IRQ_HANDLED;
}
*/
static void tomatillo_register_error_handlers(struct pci_pbm_info *pbm)
{
- struct of_device *op = of_find_device_by_node(pbm->prom_node);
+ struct of_device *op = of_find_device_by_node(pbm->op->node);
u64 tmp, err_mask, err_no_mask;
int err;
static void schizo_register_error_handlers(struct pci_pbm_info *pbm)
{
- struct of_device *op = of_find_device_by_node(pbm->prom_node);
+ struct of_device *op = of_find_device_by_node(pbm->op->node);
u64 tmp, err_mask, err_no_mask;
int err;
pci_config_write8(addr, 64);
}
-static void __init schizo_scan_bus(struct pci_pbm_info *pbm)
+static void __devinit schizo_scan_bus(struct pci_pbm_info *pbm,
+ struct device *parent)
{
pbm_config_busmastering(pbm);
pbm->is_66mhz_capable =
- (of_find_property(pbm->prom_node, "66mhz-capable", NULL)
+ (of_find_property(pbm->op->node, "66mhz-capable", NULL)
!= NULL);
- pbm->pci_bus = pci_scan_one_pbm(pbm);
+ pbm->pci_bus = pci_scan_one_pbm(pbm, parent);
if (pbm->chip_type == PBM_CHIP_TYPE_TOMATILLO)
tomatillo_register_error_handlers(pbm);
static int schizo_pbm_iommu_init(struct pci_pbm_info *pbm)
{
- struct iommu *iommu = pbm->iommu;
+ static const u32 vdma_default[] = { 0xc0000000, 0x40000000 };
unsigned long i, tagbase, database;
- struct property *prop;
- u32 vdma[2], dma_mask;
+ struct iommu *iommu = pbm->iommu;
int tsbsize, err;
+ const u32 *vdma;
+ u32 dma_mask;
u64 control;
- prop = of_find_property(pbm->prom_node, "virtual-dma", NULL);
- if (prop) {
- u32 *val = prop->value;
-
- vdma[0] = val[0];
- vdma[1] = val[1];
- } else {
- /* No property, use default values. */
- vdma[0] = 0xc0000000;
- vdma[1] = 0x40000000;
- }
+ vdma = of_get_property(pbm->op->node, "virtual-dma", NULL);
+ if (!vdma)
+ vdma = vdma_default;
dma_mask = vdma[0];
switch (vdma[1]) {
break;
default:
- prom_printf("SCHIZO: strange virtual-dma size.\n");
- prom_halt();
- };
+ printk(KERN_ERR PFX "Strange virtual-dma size.\n");
+ return -EINVAL;
+ }
/* Register addresses, SCHIZO has iommu ctx flushing. */
iommu->iommu_control = pbm->pbm_regs + SCHIZO_IOMMU_CONTROL;
tagbase = SCHIZO_IOMMU_TAG, database = SCHIZO_IOMMU_DATA;
- for(i = 0; i < 16; i++) {
+ for (i = 0; i < 16; i++) {
schizo_write(pbm->pbm_regs + tagbase + (i * 8UL), 0);
schizo_write(pbm->pbm_regs + database + (i * 8UL), 0);
}
/* Leave diag mode enabled for full-flushing done
* in pci_iommu.c
*/
- err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask);
- if (err)
+ err = iommu_table_init(iommu, tsbsize * 8 * 1024, vdma[0], dma_mask,
+ pbm->numa_node);
+ if (err) {
+ printk(KERN_ERR PFX "iommu_table_init() fails with %d\n", err);
return err;
+ }
schizo_write(iommu->iommu_tsbbase, __pa(iommu->page_table));
case 128:
control |= SCHIZO_IOMMU_TSBSZ_128K;
break;
- };
+ }
control |= SCHIZO_IOMMU_CTRL_ENAB;
schizo_write(iommu->iommu_control, control);
static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
{
- struct property *prop;
u64 tmp;
schizo_write(pbm->pbm_regs + SCHIZO_PCI_IRQ_RETRY, 5);
pbm->chip_version >= 0x2)
tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
- prop = of_find_property(pbm->prom_node, "no-bus-parking", NULL);
- if (!prop)
+ if (!of_find_property(pbm->op->node, "no-bus-parking", NULL))
tmp |= SCHIZO_PCICTRL_PARK;
else
tmp &= ~SCHIZO_PCICTRL_PARK;
}
}
-static int __init schizo_pbm_init(struct pci_controller_info *p,
- struct device_node *dp, u32 portid,
- int chip_type)
+static int __devinit schizo_pbm_init(struct pci_pbm_info *pbm,
+ struct of_device *op, u32 portid,
+ int chip_type)
{
const struct linux_prom64_registers *regs;
- struct pci_pbm_info *pbm;
+ struct device_node *dp = op->node;
const char *chipset_name;
int is_pbm_a, err;
regs = of_get_property(dp, "reg", NULL);
is_pbm_a = ((regs[0].phys_addr & 0x00700000) == 0x00600000);
- if (is_pbm_a)
- pbm = &p->pbm_A;
- else
- pbm = &p->pbm_B;
pbm->next = pci_pbm_root;
pci_pbm_root = pbm;
- pbm->scan_bus = schizo_scan_bus;
+ pbm->numa_node = -1;
+
pbm->pci_ops = &sun4u_pci_ops;
pbm->config_space_reg_bits = 8;
pbm->index = pci_num_pbms++;
pbm->portid = portid;
- pbm->parent = p;
- pbm->prom_node = dp;
+ pbm->op = op;
pbm->chip_type = chip_type;
pbm->chip_version = of_getintprop_default(dp, "version#", 0);
schizo_pbm_strbuf_init(pbm);
+ schizo_scan_bus(pbm, &op->dev);
+
return 0;
}
return (x == y);
}
-static void __init __schizo_init(struct device_node *dp, char *model_name,
- int chip_type)
+static struct pci_pbm_info * __devinit schizo_find_sibling(u32 portid,
+ int chip_type)
{
- struct pci_controller_info *p;
+ struct pci_pbm_info *pbm;
+
+ for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
+ if (portid_compare(pbm->portid, portid, chip_type))
+ return pbm;
+ }
+ return NULL;
+}
+
+static int __devinit __schizo_init(struct of_device *op, unsigned long chip_type)
+{
+ struct device_node *dp = op->node;
struct pci_pbm_info *pbm;
struct iommu *iommu;
u32 portid;
+ int err;
portid = of_getintprop_default(dp, "portid", 0xff);
- for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
- if (portid_compare(pbm->portid, portid, chip_type)) {
- if (schizo_pbm_init(pbm->parent, dp,
- portid, chip_type))
- goto fatal_memory_error;
- return;
- }
+ err = -ENOMEM;
+ pbm = kzalloc(sizeof(*pbm), GFP_KERNEL);
+ if (!pbm) {
+ printk(KERN_ERR PFX "Cannot allocate pci_pbm_info.\n");
+ goto out_err;
+ }
+
+ pbm->sibling = schizo_find_sibling(portid, chip_type);
+
+ iommu = kzalloc(sizeof(struct iommu), GFP_KERNEL);
+ if (!iommu) {
+ printk(KERN_ERR PFX "Cannot allocate PBM A iommu.\n");
+ goto out_free_pbm;
}
- p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
- if (!p)
- goto fatal_memory_error;
+ pbm->iommu = iommu;
- iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
- if (!iommu)
- goto fatal_memory_error;
+ if (schizo_pbm_init(pbm, op, portid, chip_type))
+ goto out_free_iommu;
- p->pbm_A.iommu = iommu;
+ if (pbm->sibling)
+ pbm->sibling->sibling = pbm;
- iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
- if (!iommu)
- goto fatal_memory_error;
+ dev_set_drvdata(&op->dev, pbm);
- p->pbm_B.iommu = iommu;
+ return 0;
- if (schizo_pbm_init(p, dp, portid, chip_type))
- goto fatal_memory_error;
+out_free_iommu:
+ kfree(pbm->iommu);
- return;
+out_free_pbm:
+ kfree(pbm);
-fatal_memory_error:
- prom_printf("SCHIZO: Fatal memory allocation error.\n");
- prom_halt();
+out_err:
+ return err;
}
-void __init schizo_init(struct device_node *dp, char *model_name)
+static int __devinit schizo_probe(struct of_device *op,
+ const struct of_device_id *match)
{
- __schizo_init(dp, model_name, PBM_CHIP_TYPE_SCHIZO);
+ return __schizo_init(op, (unsigned long) match->data);
}
-void __init schizo_plus_init(struct device_node *dp, char *model_name)
-{
- __schizo_init(dp, model_name, PBM_CHIP_TYPE_SCHIZO_PLUS);
-}
+/* The ordering of this table is very important. Some Tomatillo
+ * nodes announce that they are compatible with both pci108e,a801
+ * and pci108e,8001. So list the chips in reverse chronological
+ * order.
+ */
+static struct of_device_id __initdata schizo_match[] = {
+ {
+ .name = "pci",
+ .compatible = "pci108e,a801",
+ .data = (void *) PBM_CHIP_TYPE_TOMATILLO,
+ },
+ {
+ .name = "pci",
+ .compatible = "pci108e,8002",
+ .data = (void *) PBM_CHIP_TYPE_SCHIZO_PLUS,
+ },
+ {
+ .name = "pci",
+ .compatible = "pci108e,8001",
+ .data = (void *) PBM_CHIP_TYPE_SCHIZO,
+ },
+ {},
+};
+
+static struct of_platform_driver schizo_driver = {
+ .name = DRIVER_NAME,
+ .match_table = schizo_match,
+ .probe = schizo_probe,
+};
-void __init tomatillo_init(struct device_node *dp, char *model_name)
+static int __init schizo_init(void)
{
- __schizo_init(dp, model_name, PBM_CHIP_TYPE_TOMATILLO);
+ return of_register_driver(&schizo_driver, &of_bus_type);
}
+
+subsys_initcall(schizo_init);
projects / linux-2.6-omap-h63xx.git / blobdiff