Esempi in C++ (Cpp) per HP_ZX1_IOVA_TO_PDIR

Esempio n. 1

File: hp-agp.c Progetto: 12019/kernel_zte_u880

static int
hp_zx1_create_gatt_table (struct agp_bridge_data *bridge)
{
	struct _hp_private *hp = &hp_private;
	int i;

	if (hp->io_pdir_owner) {
		hp->io_pdir = (u64 *) __get_free_pages(GFP_KERNEL,
						get_order(hp->io_pdir_size));
		if (!hp->io_pdir) {
			printk(KERN_ERR PFX "Couldn't allocate contiguous "
				"memory for I/O PDIR\n");
			hp->gatt = NULL;
			hp->gatt_entries = 0;
			return -ENOMEM;
		}
		memset(hp->io_pdir, 0, hp->io_pdir_size);

		hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];
	}

	for (i = 0; i < hp->gatt_entries; i++) {
		hp->gatt[i] = (unsigned long) agp_bridge->scratch_page;
	}

	return 0;
}

Esempio n. 2

File: hp-agp.c Progetto: Epirex/Chrono_Kernel-1

static int __init hp_zx1_ioc_shared(void)
{
	struct _hp_private *hp = &hp_private;

#ifdef CONFIG_DEBUG_PRINTK
	printk(KERN_INFO PFX "HP ZX1 IOC: IOPDIR shared with sba_iommu\n");
#else
	;
#endif

	/*
	 * IOC already configured by sba_iommu module; just use
	 * its setup.  We assume:
	 *	- IOVA space is 1Gb in size
	 *	- first 512Mb is IOMMU, second 512Mb is GART
	 */
	hp->io_tlb_ps = readq(hp->ioc_regs+HP_ZX1_TCNFG);
	switch (hp->io_tlb_ps) {
		case 0: hp->io_tlb_shift = 12; break;
		case 1: hp->io_tlb_shift = 13; break;
		case 2: hp->io_tlb_shift = 14; break;
		case 3: hp->io_tlb_shift = 16; break;
		default:
			printk(KERN_ERR PFX "Invalid IOTLB page size "
			       "configuration 0x%x\n", hp->io_tlb_ps);
			hp->gatt = NULL;
			hp->gatt_entries = 0;
			return -ENODEV;
	}
	hp->io_page_size = 1 << hp->io_tlb_shift;
	hp->io_pages_per_kpage = PAGE_SIZE / hp->io_page_size;

	hp->iova_base = readq(hp->ioc_regs+HP_ZX1_IBASE) & ~0x1;
	hp->gart_base = hp->iova_base + HP_ZX1_IOVA_SIZE - HP_ZX1_GART_SIZE;

	hp->gart_size = HP_ZX1_GART_SIZE;
	hp->gatt_entries = hp->gart_size / hp->io_page_size;

	hp->io_pdir = phys_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
	hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];

	if (hp->gatt[0] != HP_ZX1_SBA_IOMMU_COOKIE) {
		/* Normal case when no AGP device in system */
		hp->gatt = NULL;
		hp->gatt_entries = 0;
		printk(KERN_ERR PFX "No reserved IO PDIR entry found; "
		       "GART disabled\n");
		return -ENODEV;
	}

	return 0;
}

Esempio n. 3

static int __init hp_zx1_ioc_shared(void)
{
	struct _hp_private *hp = &hp_private;

	printk(KERN_INFO PFX "HP ZX1 IOC: IOPDIR shared with sba_iommu\n");

	
	hp->io_tlb_ps = readq(hp->ioc_regs+HP_ZX1_TCNFG);
	switch (hp->io_tlb_ps) {
		case 0: hp->io_tlb_shift = 12; break;
		case 1: hp->io_tlb_shift = 13; break;
		case 2: hp->io_tlb_shift = 14; break;
		case 3: hp->io_tlb_shift = 16; break;
		default:
			printk(KERN_ERR PFX "Invalid IOTLB page size "
			       "configuration 0x%x\n", hp->io_tlb_ps);
			hp->gatt = NULL;
			hp->gatt_entries = 0;
			return -ENODEV;
	}
	hp->io_page_size = 1 << hp->io_tlb_shift;
	hp->io_pages_per_kpage = PAGE_SIZE / hp->io_page_size;

	hp->iova_base = readq(hp->ioc_regs+HP_ZX1_IBASE) & ~0x1;
	hp->gart_base = hp->iova_base + HP_ZX1_IOVA_SIZE - HP_ZX1_GART_SIZE;

	hp->gart_size = HP_ZX1_GART_SIZE;
	hp->gatt_entries = hp->gart_size / hp->io_page_size;

	hp->io_pdir = phys_to_virt(readq(hp->ioc_regs+HP_ZX1_PDIR_BASE));
	hp->gatt = &hp->io_pdir[HP_ZX1_IOVA_TO_PDIR(hp->gart_base)];

	if (hp->gatt[0] != HP_ZX1_SBA_IOMMU_COOKIE) {
		
		hp->gatt = NULL;
		hp->gatt_entries = 0;
		printk(KERN_ERR PFX "No reserved IO PDIR entry found; "
		       "GART disabled\n");
		return -ENODEV;
	}

	return 0;
}