#include <linux/percpu.h>
#include <linux/irq.h>
#include <linux/msi.h>
+#include <linux/log2.h>
-#include <asm/pbm.h>
#include <asm/iommu.h>
#include <asm/irq.h>
#include <asm/upa.h>
#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 {
.dma_sync_sg_for_cpu = pci_4v_dma_sync_sg_for_cpu,
};
-static inline int pci_sun4v_out_of_range(struct pci_pbm_info *pbm, unsigned int bus, unsigned int device, unsigned int func)
-{
- if (bus < pbm->pci_first_busno ||
- bus > pbm->pci_last_busno)
- return 1;
- return 0;
-}
-
-static int pci_sun4v_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
- int where, int size, u32 *value)
-{
- struct pci_pbm_info *pbm = bus_dev->sysdata;
- u32 devhandle = pbm->devhandle;
- unsigned int bus = bus_dev->number;
- unsigned int device = PCI_SLOT(devfn);
- unsigned int func = PCI_FUNC(devfn);
- unsigned long ret;
-
- if (bus_dev == pbm->pci_bus && devfn == 0x00)
- return pci_host_bridge_read_pci_cfg(bus_dev, devfn, where,
- size, value);
- if (pci_sun4v_out_of_range(pbm, bus, device, func)) {
- ret = ~0UL;
- } else {
- ret = pci_sun4v_config_get(devhandle,
- HV_PCI_DEVICE_BUILD(bus, device, func),
- where, size);
-#if 0
- printk("rcfg: [%x:%x:%x:%d]=[%lx]\n",
- devhandle, HV_PCI_DEVICE_BUILD(bus, device, func),
- where, size, ret);
-#endif
- }
- switch (size) {
- case 1:
- *value = ret & 0xff;
- break;
- case 2:
- *value = ret & 0xffff;
- break;
- case 4:
- *value = ret & 0xffffffff;
- break;
- };
-
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int pci_sun4v_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn,
- int where, int size, u32 value)
-{
- struct pci_pbm_info *pbm = bus_dev->sysdata;
- u32 devhandle = pbm->devhandle;
- unsigned int bus = bus_dev->number;
- unsigned int device = PCI_SLOT(devfn);
- unsigned int func = PCI_FUNC(devfn);
- unsigned long ret;
-
- if (bus_dev == pbm->pci_bus && devfn == 0x00)
- return pci_host_bridge_write_pci_cfg(bus_dev, devfn, where,
- size, value);
- if (pci_sun4v_out_of_range(pbm, bus, device, func)) {
- /* Do nothing. */
- } else {
- ret = pci_sun4v_config_put(devhandle,
- HV_PCI_DEVICE_BUILD(bus, device, func),
- where, size, value);
-#if 0
- printk("wcfg: [%x:%x:%x:%d] v[%x] == [%lx]\n",
- devhandle, HV_PCI_DEVICE_BUILD(bus, device, func),
- where, size, value, ret);
-#endif
- }
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops pci_sun4v_ops = {
- .read = pci_sun4v_read_pci_cfg,
- .write = pci_sun4v_write_pci_cfg,
-};
-
-
-static void pbm_scan_bus(struct pci_controller_info *p,
- struct pci_pbm_info *pbm)
-{
- pbm->pci_bus = pci_scan_one_pbm(pbm);
-}
-
-static void pci_sun4v_scan_bus(struct pci_controller_info *p)
+static void pci_sun4v_scan_bus(struct pci_pbm_info *pbm)
{
struct property *prop;
struct device_node *dp;
- if ((dp = p->pbm_A.prom_node) != NULL) {
- prop = of_find_property(dp, "66mhz-capable", NULL);
- p->pbm_A.is_66mhz_capable = (prop != NULL);
-
- pbm_scan_bus(p, &p->pbm_A);
- }
- if ((dp = p->pbm_B.prom_node) != NULL) {
- prop = of_find_property(dp, "66mhz-capable", NULL);
- p->pbm_B.is_66mhz_capable = (prop != NULL);
-
- pbm_scan_bus(p, &p->pbm_B);
- }
+ dp = pbm->prom_node;
+ prop = of_find_property(dp, "66mhz-capable", NULL);
+ pbm->is_66mhz_capable = (prop != NULL);
+ pbm->pci_bus = pci_scan_one_pbm(pbm);
/* XXX register error interrupt handlers XXX */
}
{
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) {
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];
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) {
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:
return -EINVAL;
}
-static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
-{
- const u32 *val;
- int len;
-
- val = of_get_property(pbm->prom_node, "#msi-eqs", &len);
- if (!val || len != 4)
- goto no_msi;
- pbm->msiq_num = *val;
- if (pbm->msiq_num) {
- const struct msiq_prop {
- u32 first_msiq;
- u32 num_msiq;
- u32 first_devino;
- } *mqp;
- const struct msi_range_prop {
- u32 first_msi;
- u32 num_msi;
- } *mrng;
- const struct addr_range_prop {
- u32 msi32_high;
- u32 msi32_low;
- u32 msi32_len;
- u32 msi64_high;
- u32 msi64_low;
- u32 msi64_len;
- } *arng;
-
- val = of_get_property(pbm->prom_node, "msi-eq-size", &len);
- if (!val || len != 4)
- goto no_msi;
-
- pbm->msiq_ent_count = *val;
-
- mqp = of_get_property(pbm->prom_node,
- "msi-eq-to-devino", &len);
- if (!mqp || len != sizeof(struct msiq_prop))
- goto no_msi;
-
- pbm->msiq_first = mqp->first_msiq;
- pbm->msiq_first_devino = mqp->first_devino;
-
- val = of_get_property(pbm->prom_node, "#msi", &len);
- if (!val || len != 4)
- goto no_msi;
- pbm->msi_num = *val;
-
- mrng = of_get_property(pbm->prom_node, "msi-ranges", &len);
- if (!mrng || len != sizeof(struct msi_range_prop))
- goto no_msi;
- pbm->msi_first = mrng->first_msi;
-
- val = of_get_property(pbm->prom_node, "msi-data-mask", &len);
- if (!val || len != 4)
- goto no_msi;
- pbm->msi_data_mask = *val;
-
- val = of_get_property(pbm->prom_node, "msix-data-width", &len);
- if (!val || len != 4)
- goto no_msi;
- pbm->msix_data_width = *val;
-
- arng = of_get_property(pbm->prom_node, "msi-address-ranges",
- &len);
- if (!arng || len != sizeof(struct addr_range_prop))
- goto no_msi;
- pbm->msi32_start = ((u64)arng->msi32_high << 32) |
- (u64) arng->msi32_low;
- pbm->msi64_start = ((u64)arng->msi64_high << 32) |
- (u64) arng->msi64_low;
- pbm->msi32_len = arng->msi32_len;
- pbm->msi64_len = arng->msi64_len;
-
- if (msi_bitmap_alloc(pbm))
- goto no_msi;
-
- if (msi_queue_alloc(pbm)) {
- msi_bitmap_free(pbm);
- goto no_msi;
- }
-
- printk(KERN_INFO "%s: MSI Queue first[%u] num[%u] count[%u] "
- "devino[0x%x]\n",
- pbm->name,
- pbm->msiq_first, pbm->msiq_num,
- pbm->msiq_ent_count,
- pbm->msiq_first_devino);
- printk(KERN_INFO "%s: MSI first[%u] num[%u] mask[0x%x] "
- "width[%u]\n",
- pbm->name,
- pbm->msi_first, pbm->msi_num, pbm->msi_data_mask,
- pbm->msix_data_width);
- printk(KERN_INFO "%s: MSI addr32[0x%lx:0x%x] "
- "addr64[0x%lx:0x%x]\n",
- pbm->name,
- pbm->msi32_start, pbm->msi32_len,
- pbm->msi64_start, pbm->msi64_len);
- printk(KERN_INFO "%s: MSI queues at RA [%p]\n",
- pbm->name,
- pbm->msi_queues);
- }
-
- return;
-
-no_msi:
- pbm->msiq_num = 0;
- printk(KERN_INFO "%s: No MSI support.\n", pbm->name);
-}
static int alloc_msi(struct pci_pbm_info *pbm)
{
*/
sun4v_destroy_msi(virt_irq);
}
+
+static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
+{
+ const u32 *val;
+ int len;
+
+ val = of_get_property(pbm->prom_node, "#msi-eqs", &len);
+ if (!val || len != 4)
+ goto no_msi;
+ pbm->msiq_num = *val;
+ if (pbm->msiq_num) {
+ const struct msiq_prop {
+ u32 first_msiq;
+ u32 num_msiq;
+ u32 first_devino;
+ } *mqp;
+ const struct msi_range_prop {
+ u32 first_msi;
+ u32 num_msi;
+ } *mrng;
+ const struct addr_range_prop {
+ u32 msi32_high;
+ u32 msi32_low;
+ u32 msi32_len;
+ u32 msi64_high;
+ u32 msi64_low;
+ u32 msi64_len;
+ } *arng;
+
+ val = of_get_property(pbm->prom_node, "msi-eq-size", &len);
+ if (!val || len != 4)
+ goto no_msi;
+
+ pbm->msiq_ent_count = *val;
+
+ mqp = of_get_property(pbm->prom_node,
+ "msi-eq-to-devino", &len);
+ if (!mqp || len != sizeof(struct msiq_prop))
+ goto no_msi;
+
+ pbm->msiq_first = mqp->first_msiq;
+ pbm->msiq_first_devino = mqp->first_devino;
+
+ val = of_get_property(pbm->prom_node, "#msi", &len);
+ if (!val || len != 4)
+ goto no_msi;
+ pbm->msi_num = *val;
+
+ mrng = of_get_property(pbm->prom_node, "msi-ranges", &len);
+ if (!mrng || len != sizeof(struct msi_range_prop))
+ goto no_msi;
+ pbm->msi_first = mrng->first_msi;
+
+ val = of_get_property(pbm->prom_node, "msi-data-mask", &len);
+ if (!val || len != 4)
+ goto no_msi;
+ pbm->msi_data_mask = *val;
+
+ val = of_get_property(pbm->prom_node, "msix-data-width", &len);
+ if (!val || len != 4)
+ goto no_msi;
+ pbm->msix_data_width = *val;
+
+ arng = of_get_property(pbm->prom_node, "msi-address-ranges",
+ &len);
+ if (!arng || len != sizeof(struct addr_range_prop))
+ goto no_msi;
+ pbm->msi32_start = ((u64)arng->msi32_high << 32) |
+ (u64) arng->msi32_low;
+ pbm->msi64_start = ((u64)arng->msi64_high << 32) |
+ (u64) arng->msi64_low;
+ pbm->msi32_len = arng->msi32_len;
+ pbm->msi64_len = arng->msi64_len;
+
+ if (msi_bitmap_alloc(pbm))
+ goto no_msi;
+
+ if (msi_queue_alloc(pbm)) {
+ msi_bitmap_free(pbm);
+ goto no_msi;
+ }
+
+ printk(KERN_INFO "%s: MSI Queue first[%u] num[%u] count[%u] "
+ "devino[0x%x]\n",
+ pbm->name,
+ pbm->msiq_first, pbm->msiq_num,
+ pbm->msiq_ent_count,
+ pbm->msiq_first_devino);
+ printk(KERN_INFO "%s: MSI first[%u] num[%u] mask[0x%x] "
+ "width[%u]\n",
+ pbm->name,
+ pbm->msi_first, pbm->msi_num, pbm->msi_data_mask,
+ pbm->msix_data_width);
+ printk(KERN_INFO "%s: MSI addr32[0x%lx:0x%x] "
+ "addr64[0x%lx:0x%x]\n",
+ pbm->name,
+ pbm->msi32_start, pbm->msi32_len,
+ pbm->msi64_start, pbm->msi64_len);
+ printk(KERN_INFO "%s: MSI queues at RA [%p]\n",
+ pbm->name,
+ pbm->msi_queues);
+ }
+ pbm->setup_msi_irq = pci_sun4v_setup_msi_irq;
+ pbm->teardown_msi_irq = pci_sun4v_teardown_msi_irq;
+
+ return;
+
+no_msi:
+ pbm->msiq_num = 0;
+ printk(KERN_INFO "%s: No MSI support.\n", pbm->name);
+}
#else /* CONFIG_PCI_MSI */
static void pci_sun4v_msi_init(struct pci_pbm_info *pbm)
{
else
pbm = &p->pbm_A;
+ pbm->next = pci_pbm_root;
+ pci_pbm_root = pbm;
+
+ pbm->scan_bus = pci_sun4v_scan_bus;
+ pbm->pci_ops = &sun4v_pci_ops;
+ pbm->config_space_reg_bits = 12;
+
+ pbm->index = pci_num_pbms++;
+
pbm->parent = p;
pbm->prom_node = dp;
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;
struct property *prop;
struct linux_prom64_registers *regs;
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;
devhandle = (regs->phys_addr >> 32UL) & 0x0fffffff;
- for (p = pci_controller_root; p; p = p->next) {
- struct pci_pbm_info *pbm;
-
- if (p->pbm_A.prom_node && p->pbm_B.prom_node)
- continue;
-
- pbm = (p->pbm_A.prom_node ?
- &p->pbm_A :
- &p->pbm_B);
-
+ for (pbm = pci_pbm_root; pbm; pbm = pbm->next) {
if (pbm->devhandle == (devhandle ^ 0x40)) {
- pci_sun4v_pbm_init(p, dp, devhandle);
+ pci_sun4v_pbm_init(pbm->parent, dp, devhandle);
return;
}
}
p->pbm_B.iommu = iommu;
- p->next = pci_controller_root;
- pci_controller_root = p;
-
- p->index = pci_num_controllers++;
-
- p->scan_bus = pci_sun4v_scan_bus;
-#ifdef CONFIG_PCI_MSI
- p->setup_msi_irq = pci_sun4v_setup_msi_irq;
- p->teardown_msi_irq = pci_sun4v_teardown_msi_irq;
-#endif
- p->pci_ops = &pci_sun4v_ops;
-
/* Like PSYCHO and SCHIZO we have a 2GB aligned area
* for memory space.
*/
git.samba.org / sfrench / cifs-2.6.git / blobdiff