sparc64: Convert SUN4V PCI controller driver into a real driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
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6d19c88f53
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3822b50964
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@ -167,7 +167,6 @@ void pci_config_write32(u32 *addr, u32 val)
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/* Probe for all PCI controllers in the system. */
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extern void sabre_init(struct device_node *, const char *);
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extern void psycho_init(struct device_node *, const char *);
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extern void sun4v_pci_init(struct device_node *, const char *);
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extern void fire_pci_init(struct device_node *, const char *);
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static struct {
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@ -179,7 +178,6 @@ static struct {
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{ "pci108e,a001", sabre_init },
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{ "SUNW,psycho", psycho_init },
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{ "pci108e,8000", psycho_init },
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{ "SUNW,sun4v-pci", sun4v_pci_init },
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{ "pciex108e,80f0", fire_pci_init },
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};
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#define PCI_NUM_CONTROLLER_TYPES ARRAY_SIZE(pci_controller_table)
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@ -13,12 +13,10 @@
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#include <linux/irq.h>
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#include <linux/msi.h>
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#include <linux/log2.h>
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#include <linux/of_device.h>
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#include <asm/iommu.h>
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#include <asm/irq.h>
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#include <asm/upa.h>
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#include <asm/pstate.h>
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#include <asm/oplib.h>
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#include <asm/hypervisor.h>
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#include <asm/prom.h>
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@ -27,6 +25,9 @@
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#include "pci_sun4v.h"
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#define DRIVER_NAME "pci_sun4v"
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#define PFX DRIVER_NAME ": "
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static unsigned long vpci_major = 1;
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static unsigned long vpci_minor = 1;
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@ -583,7 +584,7 @@ static unsigned long __init probe_existing_entries(struct pci_pbm_info *pbm,
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return cnt;
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}
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static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
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static int __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
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{
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struct iommu *iommu = pbm->iommu;
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struct property *prop;
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@ -603,9 +604,9 @@ static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
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}
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if ((vdma[0] | vdma[1]) & ~IO_PAGE_MASK) {
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prom_printf("PCI-SUN4V: strange virtual-dma[%08x:%08x].\n",
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vdma[0], vdma[1]);
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prom_halt();
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printk(KERN_ERR PFX "Strange virtual-dma[%08x:%08x].\n",
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vdma[0], vdma[1]);
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return -EINVAL;
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};
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dma_mask = (roundup_pow_of_two(vdma[1]) - 1UL);
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@ -625,8 +626,8 @@ static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
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sz = (sz + 7UL) & ~7UL;
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iommu->arena.map = kzalloc(sz, GFP_KERNEL);
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if (!iommu->arena.map) {
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prom_printf("PCI_IOMMU: Error, kmalloc(arena.map) failed.\n");
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prom_halt();
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printk(KERN_ERR PFX "Error, kmalloc(arena.map) failed.\n");
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return -ENOMEM;
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}
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iommu->arena.limit = num_tsb_entries;
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@ -634,6 +635,8 @@ static void __init pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
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if (sz)
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printk("%s: Imported %lu TSB entries from OBP\n",
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pbm->name, sz);
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return 0;
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}
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#ifdef CONFIG_PCI_MSI
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@ -890,10 +893,11 @@ static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
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}
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#endif /* !(CONFIG_PCI_MSI) */
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static void __init pci_sun4v_pbm_init(struct pci_controller_info *p,
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struct device_node *dp, u32 devhandle)
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static int __init pci_sun4v_pbm_init(struct pci_controller_info *p,
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struct device_node *dp, u32 devhandle)
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{
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struct pci_pbm_info *pbm;
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int err;
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if (devhandle & 0x40)
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pbm = &p->pbm_B;
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@ -905,7 +909,6 @@ static void __init pci_sun4v_pbm_init(struct pci_controller_info *p,
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pbm->numa_node = of_node_to_nid(dp);
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pbm->scan_bus = pci_sun4v_scan_bus;
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pbm->pci_ops = &sun4v_pci_ops;
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pbm->config_space_reg_bits = 12;
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@ -924,50 +927,58 @@ static void __init pci_sun4v_pbm_init(struct pci_controller_info *p,
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pci_determine_mem_io_space(pbm);
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pci_get_pbm_props(pbm);
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pci_sun4v_iommu_init(pbm);
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err = pci_sun4v_iommu_init(pbm);
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if (err)
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return err;
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pci_sun4v_msi_init(pbm);
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pci_sun4v_scan_bus(pbm);
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return 0;
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}
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void __init sun4v_pci_init(struct device_node *dp, char *model_name)
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static int __devinit pci_sun4v_probe(struct of_device *op,
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const struct of_device_id *match)
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{
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const struct linux_prom64_registers *regs;
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static int hvapi_negotiated = 0;
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struct pci_controller_info *p;
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struct pci_pbm_info *pbm;
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struct device_node *dp;
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struct iommu *iommu;
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struct property *prop;
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struct linux_prom64_registers *regs;
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u32 devhandle;
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int i;
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dp = op->node;
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if (!hvapi_negotiated++) {
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int err = sun4v_hvapi_register(HV_GRP_PCI,
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vpci_major,
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&vpci_minor);
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if (err) {
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prom_printf("SUN4V_PCI: Could not register hvapi, "
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"err=%d\n", err);
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prom_halt();
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printk(KERN_ERR PFX "Could not register hvapi, "
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"err=%d\n", err);
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return err;
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}
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printk("SUN4V_PCI: Registered hvapi major[%lu] minor[%lu]\n",
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printk(KERN_INFO PFX "Registered hvapi major[%lu] minor[%lu]\n",
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vpci_major, vpci_minor);
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dma_ops = &sun4v_dma_ops;
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}
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prop = of_find_property(dp, "reg", NULL);
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if (!prop) {
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prom_printf("SUN4V_PCI: Could not find config registers\n");
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prom_halt();
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regs = of_get_property(dp, "reg", NULL);
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if (!regs) {
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printk(KERN_ERR PFX "Could not find config registers\n");
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return -ENODEV;
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}
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regs = prop->value;
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devhandle = (regs->phys_addr >> 32UL) & 0x0fffffff;
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for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
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if (pbm->devhandle == (devhandle ^ 0x40)) {
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pci_sun4v_pbm_init(pbm->parent, dp, devhandle);
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return;
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return pci_sun4v_pbm_init(pbm->parent, dp, devhandle);
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}
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}
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@ -975,31 +986,63 @@ void __init sun4v_pci_init(struct device_node *dp, char *model_name)
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unsigned long page = get_zeroed_page(GFP_ATOMIC);
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if (!page)
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goto fatal_memory_error;
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return -ENOMEM;
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per_cpu(iommu_batch, i).pglist = (u64 *) page;
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}
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p = kzalloc(sizeof(struct pci_controller_info), GFP_ATOMIC);
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if (!p)
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goto fatal_memory_error;
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if (!p) {
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printk(KERN_ERR PFX "Could not allocate pci_controller_info\n");
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goto out_free;
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}
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iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
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if (!iommu)
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goto fatal_memory_error;
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if (!iommu) {
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printk(KERN_ERR PFX "Could not allocate pbm A iommu\n");
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goto out_free;
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}
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p->pbm_A.iommu = iommu;
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iommu = kzalloc(sizeof(struct iommu), GFP_ATOMIC);
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if (!iommu)
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goto fatal_memory_error;
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if (!iommu) {
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printk(KERN_ERR PFX "Could not allocate pbm B iommu\n");
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goto out_free;
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}
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p->pbm_B.iommu = iommu;
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pci_sun4v_pbm_init(p, dp, devhandle);
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return;
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return pci_sun4v_pbm_init(p, dp, devhandle);
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fatal_memory_error:
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prom_printf("SUN4V_PCI: Fatal memory allocation error.\n");
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prom_halt();
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out_free:
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if (p) {
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if (p->pbm_A.iommu)
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kfree(p->pbm_A.iommu);
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if (p->pbm_B.iommu)
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kfree(p->pbm_B.iommu);
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kfree(p);
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}
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return -ENOMEM;
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}
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static struct of_device_id pci_sun4v_match[] = {
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{
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.name = "pci",
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.compatible = "SUNW,sun4v-pci",
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},
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{},
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};
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static struct of_platform_driver pci_sun4v_driver = {
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.name = DRIVER_NAME,
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.match_table = pci_sun4v_match,
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.probe = pci_sun4v_probe,
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};
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static int __init pci_sun4v_init(void)
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{
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return of_register_driver(&pci_sun4v_driver, &of_bus_type);
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}
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subsys_initcall(pci_sun4v_init);
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