From: Alexey Kardashevskiy <aik@ozlabs•ru>
To: Benjamin Herrenschmidt <benh@kernel•crashing.org>
Cc: linuxppc-dev@lists•ozlabs.org, Paul Mackerras <paulus@samba•org>,
David Gibson <david@gibson•dropbear.id.au>
Subject: Re: [PATCH] powerpc-powernv: added tce_get callback for powernv platform
Date: Wed, 05 Sep 2012 10:19:33 +1000 [thread overview]
Message-ID: <50469A95.7050606@ozlabs.ru> (raw)
In-Reply-To: <1346787702.3025.7.camel@pasglop>
On 05/09/12 05:41, Benjamin Herrenschmidt wrote:
> On Tue, 2012-09-04 at 17:35 +1000, Alexey Kardashevskiy wrote:
>> The upcoming VFIO support requires a way to know which
>> entry in the TCE map is not empty in order to do cleanup
>> at QEMU exit/crash. This patch adds such functionality
>> to POWERNV platform code.
>>
>> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs•ru>
>> ---
>> arch/powerpc/platforms/powernv/pci.c | 6 ++++++
>> 1 file changed, 6 insertions(+)
>>
>> diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
>> index be3cfc5..61f8068 100644
>> --- a/arch/powerpc/platforms/powernv/pci.c
>> +++ b/arch/powerpc/platforms/powernv/pci.c
>> @@ -447,6 +447,11 @@ static void pnv_tce_free(struct iommu_table *tbl, long index, long npages)
>> pnv_tce_invalidate(tbl, tces, tcep - 1);
>> }
>>
>> +static unsigned long pnv_tce_get(struct iommu_table *tbl, long index)
>> +{
>> + return ((u64 *)tbl->it_base)[index - tbl->it_offset] & IOMMU_PAGE_MASK;
>> +}
>
> Why the masking here ?
Oops. No reason. Will remove.
>
> Cheers,
> Ben.
>
>> void pnv_pci_setup_iommu_table(struct iommu_table *tbl,
>> void *tce_mem, u64 tce_size,
>> u64 dma_offset)
>> @@ -597,6 +602,7 @@ void __init pnv_pci_init(void)
>> ppc_md.pci_dma_dev_setup = pnv_pci_dma_dev_setup;
>> ppc_md.tce_build = pnv_tce_build;
>> ppc_md.tce_free = pnv_tce_free;
>> + ppc_md.tce_get = pnv_tce_get;
>> ppc_md.pci_probe_mode = pnv_pci_probe_mode;
>> set_pci_dma_ops(&dma_iommu_ops);
>>
>
>
--
Alexey
next prev parent reply other threads:[~2012-09-05 0:19 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20120821113534.GS29724@truffula.fritz.box>
2012-09-04 7:33 ` [PATCH] vfio: enabled and supported on power (v7) Alexey Kardashevskiy
2012-09-04 7:35 ` [PATCH] powerpc-powernv: added tce_get callback for powernv platform Alexey Kardashevskiy
2012-09-04 19:41 ` Benjamin Herrenschmidt
2012-09-04 22:35 ` David Gibson
2012-09-05 0:19 ` Alexey Kardashevskiy [this message]
2012-09-05 0:32 ` Benjamin Herrenschmidt
2012-09-04 7:36 ` [PATCH] powerpc-kvm: fixing page alignment for TCE Alexey Kardashevskiy
2012-09-20 9:01 ` Alexander Graf
2012-09-04 7:36 ` [PATCH] powerpc-powernv: align BARs to PAGE_SIZE on powernv platform Alexey Kardashevskiy
2012-09-04 19:45 ` Benjamin Herrenschmidt
2012-09-05 0:55 ` Alexey Kardashevskiy
2012-09-05 1:16 ` Benjamin Herrenschmidt
2012-09-05 4:57 ` Alex Williamson
2012-09-05 5:17 ` Benjamin Herrenschmidt
2012-09-05 5:27 ` Alexey Kardashevskiy
2012-09-10 17:06 ` Alex Williamson
2012-09-10 16:02 ` [PATCH] vfio: enabled and supported on power (v7) Alex Williamson
2012-09-11 8:28 ` Alexey Kardashevskiy
2012-09-13 22:34 ` Alex Williamson
2012-09-13 22:41 ` Scott Wood
2012-09-13 22:55 ` Alex Williamson
2012-09-14 0:51 ` Alexey Kardashevskiy
2012-09-14 4:35 ` Alex Williamson
2012-10-11 8:19 ` Alexey Kardashevskiy
2012-10-11 18:09 ` Alex Williamson
2012-09-05 1:19 [PATCH] powerpc-powernv: added tce_get callback for powernv platform Alexey Kardashevskiy
2012-09-10 2:35 ` David Gibson
2012-09-10 5:19 ` Benjamin Herrenschmidt
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