Merge branch 'isdn-cleanup' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...

[sfrench/cifs-2.6.git] / arch / sparc64 / kernel / pci_sun4v.c

diff --git a/arch/sparc64/kernel/pci_sun4v.c b/arch/sparc64/kernel/pci_sun4v.c
index 34df4047587a4db2c95506410e5e2edd96b35837..6b3fe2c1d65e990ca95cd6d0eb9eaea1a8700675 100644 (file)
--- a/arch/sparc64/kernel/pci_sun4v.c
+++ b/arch/sparc64/kernel/pci_sun4v.c
@@ -12,6 +12,7 @@
 #include <linux/percpu.h>
 #include <linux/irq.h>
 #include <linux/msi.h>
+#include <linux/log2.h>
 
 #include <asm/iommu.h>
 #include <asm/irq.h>
@@ -26,6 +27,9 @@
 
 #include "pci_sun4v.h"
 
+static unsigned long vpci_major = 1;
+static unsigned long vpci_minor = 1;
+
 #define PGLIST_NENTS   (PAGE_SIZE / sizeof(u64))
 
 struct iommu_batch {
@@ -638,9 +642,8 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
 {
        struct iommu *iommu = pbm->iommu;
        struct property *prop;
-       unsigned long num_tsb_entries, sz;
+       unsigned long num_tsb_entries, sz, tsbsize;
        u32 vdma[2], dma_mask, dma_offset;
-       int tsbsize;
 
        prop = of_find_property(pbm->prom_node, "virtual-dma", NULL);
        if (prop) {
@@ -654,31 +657,15 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
                vdma[1] = 0x80000000;
        }
 
-       dma_mask = vdma[0];
-       switch (vdma[1]) {
-               case 0x20000000:
-                       dma_mask |= 0x1fffffff;
-                       tsbsize = 64;
-                       break;
-
-               case 0x40000000:
-                       dma_mask |= 0x3fffffff;
-                       tsbsize = 128;
-                       break;
-
-               case 0x80000000:
-                       dma_mask |= 0x7fffffff;
-                       tsbsize = 256;
-                       break;
-
-               default:
-                       prom_printf("PCI-SUN4V: strange virtual-dma size.\n");
-                       prom_halt();
+       if ((vdma[0] | vdma[1]) & ~IO_PAGE_MASK) {
+               prom_printf("PCI-SUN4V: strange virtual-dma[%08x:%08x].\n",
+                           vdma[0], vdma[1]);
+               prom_halt();
        };
 
-       tsbsize *= (8 * 1024);
-
-       num_tsb_entries = tsbsize / sizeof(iopte_t);
+       dma_mask = (roundup_pow_of_two(vdma[1]) - 1UL);
+       num_tsb_entries = vdma[1] / IO_PAGE_SIZE;
+       tsbsize = num_tsb_entries * sizeof(iopte_t);
 
        dma_offset = vdma[0];
 
@@ -689,7 +676,7 @@ static void pci_sun4v_iommu_init(struct pci_pbm_info *pbm)
        iommu->dma_addr_mask = dma_mask;
 
        /* Allocate and initialize the free area map.  */
-       sz = num_tsb_entries / 8;
+       sz = (num_tsb_entries + 7) / 8;
        sz = (sz + 7UL) & ~7UL;
        iommu->arena.map = kzalloc(sz, GFP_KERNEL);
        if (!iommu->arena.map) {
@@ -731,7 +718,7 @@ struct pci_sun4v_msiq_entry {
 
        u64             msi_address;
 
-       /* The format of this value is message type dependant.
+       /* The format of this value is message type dependent.
         * For MSI bits 15:0 are the data from the MSI packet.
         * For MSI-X bits 31:0 are the data from the MSI packet.
         * For MSG, the message code and message routing code where:
@@ -1178,6 +1165,7 @@ static void pci_sun4v_pbm_init(struct pci_controller_info *p, struct device_node
 
 void sun4v_pci_init(struct device_node *dp, char *model_name)
 {
+       static int hvapi_negotiated = 0;
        struct pci_controller_info *p;
        struct pci_pbm_info *pbm;
        struct iommu *iommu;
@@ -1186,6 +1174,20 @@ void sun4v_pci_init(struct device_node *dp, char *model_name)
        u32 devhandle;
        int i;
 
+       if (!hvapi_negotiated++) {
+               int err = sun4v_hvapi_register(HV_GRP_PCI,
+                                              vpci_major,
+                                              &vpci_minor);
+
+               if (err) {
+                       prom_printf("SUN4V_PCI: Could not register hvapi, "
+                                   "err=%d\n", err);
+                       prom_halt();
+               }
+               printk("SUN4V_PCI: Registered hvapi major[%lu] minor[%lu]\n",
+                      vpci_major, vpci_minor);
+       }
+
        prop = of_find_property(dp, "reg", NULL);
        regs = prop->value;