On Mon, Feb 16, 2009 at 06:33:45PM +0800, Zhang, Xiantao wrote:
> Hi, Isaku
> This patch targets for enhancing vt-d support for ia64, could you help
> to review?
It looks mostly good.
How about moving arch independent MSI related definitions
into a common header file instead of duplicating with
xen/include/asm-ia64/msi.h?
thanks,
> Xiantao
>
> # HG changeset patch
> # User xiantao@xxxxxxxxxxxxxxxxxxxxxx
> # Date 1234244822 -28800
> # Node ID 67f2e14613efc0a18924fd60f2561999b9f59a43
> # Parent 4fd4dcf2f8916ab4656911a76e52fc6b1ad42c2f
> [IA64] Enhance vt-d support for ia64
>
> Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
>
> diff -r 4fd4dcf2f891 -r 67f2e14613ef xen/arch/ia64/xen/domain.c
> --- a/xen/arch/ia64/xen/domain.c Wed Jan 28 12:22:58 2009 +0900
> +++ b/xen/arch/ia64/xen/domain.c Tue Feb 10 13:47:02 2009 +0800
> @@ -1999,6 +1999,7 @@ static void __init calc_dom0_size(void)
> unsigned long p2m_pages;
> unsigned long spare_hv_pages;
> unsigned long max_dom0_size;
> + unsigned long iommu_pg_table_pages = 0;
>
> /* Estimate maximum memory we can safely allocate for dom0
> * by subtracting the p2m table allocation and a chunk of memory
> @@ -2009,8 +2010,13 @@ static void __init calc_dom0_size(void)
> domheap_pages = avail_domheap_pages();
> p2m_pages = domheap_pages / PTRS_PER_PTE;
> spare_hv_pages = 8192 + (domheap_pages / 4096);
> - max_dom0_size = (domheap_pages - (p2m_pages + spare_hv_pages))
> - * PAGE_SIZE;
> +
> + if (iommu_enabled)
> + iommu_pg_table_pages = domheap_pages * 4 / 512;
> + /* There are 512 ptes in one 4K vtd page. */
> +
> + max_dom0_size = (domheap_pages - (p2m_pages + spare_hv_pages) -
> + iommu_pg_table_pages) * PAGE_SIZE;
> printk("Maximum permitted dom0 size: %luMB\n",
> max_dom0_size / (1024*1024));
>
> diff -r 4fd4dcf2f891 -r 67f2e14613ef xen/drivers/passthrough/vtd/ia64/vtd.c
> --- a/xen/drivers/passthrough/vtd/ia64/vtd.c Wed Jan 28 12:22:58 2009 +0900
> +++ b/xen/drivers/passthrough/vtd/ia64/vtd.c Tue Feb 10 13:47:02 2009 +0800
> @@ -111,3 +111,34 @@ void hvm_dpci_isairq_eoi(struct domain *
> {
> /* dummy */
> }
> +
> +static int dom0_set_iommu_mapping(unsigned long start, unsigned long end,
> + void *arg)
> +{
> + unsigned long tmp, pfn, j, page_addr = start;
> + struct domain *d = (struct domain *)arg;
> +
> + /*
> + * Set up 1:1 page table for dom0 except the critical segments
> + * like Xen and tboot.
> + */
> +
> + while (page_addr < end)
> + {
> + if (xen_in_range(page_addr, page_addr + PAGE_SIZE))
> + continue;
> +
> + pfn = page_addr >> PAGE_SHIFT;
> + tmp = 1 << (PAGE_SHIFT - PAGE_SHIFT_4K);
> + for ( j = 0; j < tmp; j++ )
> + iommu_map_page(d, (pfn*tmp+j), (pfn*tmp+j));
> +
> + page_addr += PAGE_SIZE;
> + }
> +}
> +
> +void iommu_dom0_do_mapping(struct domain *d)
> +{
> + BUG_ON(d != dom0);
> + efi_memmap_walk(dom0_set_iommu_mapping, d);
> +}
> diff -r 4fd4dcf2f891 -r 67f2e14613ef xen/drivers/passthrough/vtd/iommu.c
> --- a/xen/drivers/passthrough/vtd/iommu.c Wed Jan 28 12:22:58 2009 +0900
> +++ b/xen/drivers/passthrough/vtd/iommu.c Tue Feb 10 13:47:02 2009 +0800
> @@ -829,7 +829,6 @@ static void dma_msi_data_init(struct iom
> spin_unlock_irqrestore(&iommu->register_lock, flags);
> }
>
> -#ifdef SUPPORT_MSI_REMAPPING
> static void dma_msi_addr_init(struct iommu *iommu, int phy_cpu)
> {
> u64 msi_address;
> @@ -846,12 +845,6 @@ static void dma_msi_addr_init(struct iom
> dmar_writel(iommu->reg, DMAR_FEUADDR_REG, (u32)(msi_address >> 32));
> spin_unlock_irqrestore(&iommu->register_lock, flags);
> }
> -#else
> -static void dma_msi_addr_init(struct iommu *iommu, int phy_cpu)
> -{
> - /* ia64: TODO */
> -}
> -#endif
>
> static void dma_msi_set_affinity(unsigned int vector, cpumask_t dest)
> {
> @@ -993,24 +986,7 @@ static int intel_iommu_domain_init(struc
>
> if ( d->domain_id == 0 )
> {
> - extern int xen_in_range(paddr_t start, paddr_t end);
> - extern int tboot_in_range(paddr_t start, paddr_t end);
> -
> - /*
> - * Set up 1:1 page table for dom0 except the critical segments
> - * like Xen and tboot.
> - */
> - for ( i = 0; i < max_page; i++ )
> - {
> - if ( xen_in_range(i << PAGE_SHIFT, (i + 1) << PAGE_SHIFT) ||
> - tboot_in_range(i << PAGE_SHIFT, (i + 1) << PAGE_SHIFT) )
> - continue;
> -
> - tmp = 1 << (PAGE_SHIFT - PAGE_SHIFT_4K);
> - for ( j = 0; j < tmp; j++ )
> - iommu_map_page(d, (i*tmp+j), (i*tmp+j));
> - }
> -
> + iommu_dom0_do_mapping(d);
> setup_dom0_devices(d);
> setup_dom0_rmrr(d);
>
> diff -r 4fd4dcf2f891 -r 67f2e14613ef xen/drivers/passthrough/vtd/x86/vtd.c
> --- a/xen/drivers/passthrough/vtd/x86/vtd.c Wed Jan 28 12:22:58 2009 +0900
> +++ b/xen/drivers/passthrough/vtd/x86/vtd.c Tue Feb 10 13:47:02 2009 +0800
> @@ -142,3 +142,25 @@ void hvm_dpci_isairq_eoi(struct domain *
> }
> spin_unlock(&d->event_lock);
> }
> +
> +void iommu_dom0_do_mapping(struct domain *d)
> +{
> + extern int xen_in_range(paddr_t start, paddr_t end);
> + extern int tboot_in_range(paddr_t start, paddr_t end);
> +
> + BUG_ON(d != dom0);
> + /*
> + * Set up 1:1 page table for dom0 except the critical segments
> + * like Xen and tboot.
> + */
> + for ( i = 0; i < max_page; i++ )
> + {
> + if ( xen_in_range(i << PAGE_SHIFT, (i + 1) << PAGE_SHIFT) ||
> + tboot_in_range(i << PAGE_SHIFT, (i + 1) << PAGE_SHIFT) )
> + continue;
> +
> + tmp = 1 << (PAGE_SHIFT - PAGE_SHIFT_4K);
> + for ( j = 0; j < tmp; j++ )
> + iommu_map_page(d, (i*tmp+j), (i*tmp+j));
> + }
> +}
> diff -r 4fd4dcf2f891 -r 67f2e14613ef xen/include/asm-ia64/msi.h
> --- /dev/null Thu Jan 01 00:00:00 1970 +0000
> +++ b/xen/include/asm-ia64/msi.h Tue Feb 10 13:47:02 2009 +0800
> @@ -0,0 +1,20 @@
> +#ifndef __ASM_MSI_H
> +#define __ASM_MSI_H
> +
> +/*
> + * MSI Defined Data Structures
> + */
> +#define MSI_ADDRESS_HEADER 0xfee
> +#define MSI_ADDRESS_HEADER_SHIFT 12
> +#define MSI_ADDRESS_HEADER_MASK 0xfff000
> +#define MSI_ADDRESS_DEST_ID_MASK 0xfff0000f
> +#define MSI_TARGET_CPU_MASK 0xff
> +#define MSI_TARGET_CPU_SHIFT 4
> +#define MSI_DELIVERY_MODE 0
> +#define MSI_LEVEL_MODE 1 /* Edge always assert */
> +#define MSI_TRIGGER_MODE 0 /* MSI is edge sensitive */
> +#define MSI_PHYSICAL_MODE 0
> +#define MSI_LOGICAL_MODE 1
> +#define MSI_REDIRECTION_HINT_MODE 0
> +
> +#endif /* __ASM_MSI_H */
> diff -r 4fd4dcf2f891 -r 67f2e14613ef xen/include/xen/iommu.h
> --- a/xen/include/xen/iommu.h Wed Jan 28 12:22:58 2009 +0900
> +++ b/xen/include/xen/iommu.h Tue Feb 10 13:47:02 2009 +0800
> @@ -19,6 +19,8 @@
>
> #ifndef _IOMMU_H_
> #define _IOMMU_H_
> +
> +#include <asm/msi.h>
>
> #include <xen/init.h>
> #include <xen/spinlock.h>
> @@ -113,4 +115,6 @@ void iommu_suspend(void);
> void iommu_suspend(void);
> void iommu_resume(void);
>
> +void iommu_dom0_do_mapping(struct domain *d);
> +
> #endif /* _IOMMU_H_ */
--
yamahata
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