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Subject: Re: [PATCH 1/5] powerpc: Add OPAL calls for LPC memory alloc/release
To:     "Alastair D'Silva" <alastair@au1.ibm.com>, alastair@d-silva.org
Cc:     Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Paul Mackerras <paulus@samba.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Frederic Barrat <fbarrat@linux.ibm.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>,
        Allison Randal <allison@lohutok.net>,
        Thomas Gleixner <tglx@linutronix.de>,
        Vaibhav Jain <vaibhav@linux.ibm.com>,
        Anju T Sudhakar <anju@linux.vnet.ibm.com>,
        =?UTF-8?Q?C=c3=a9dric_Le_Goater?= <clg@kaod.org>,
        David Gibson <david@gibson.dropbear.id.au>,
        Masahiro Yamada <yamada.masahiro@socionext.com>,
        Nicholas Piggin <npiggin@gmail.com>,
        Alexey Kardashevskiy <aik@ozlabs.ru>,
        linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
References: <20190917014307.30485-1-alastair@au1.ibm.com>
 <20190917014307.30485-2-alastair@au1.ibm.com>
From:   Andrew Donnellan <ajd@linux.ibm.com>
Date:   Wed, 25 Sep 2019 13:41:20 +0200
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On 17/9/19 3:42 am, Alastair D'Silva wrote:
> From: Alastair D'Silva <alastair@d-silva.org>
> 
> Add OPAL calls for LPC memory alloc/release
> 
> Signed-off-by: Alastair D'Silva <alastair@d-silva.org>

This needs rebasing, but apart from that.

Acked-by: Andrew Donnellan <ajd@linux.ibm.com>

> ---
>   arch/powerpc/include/asm/opal-api.h        | 4 +++-
>   arch/powerpc/include/asm/opal.h            | 3 +++
>   arch/powerpc/platforms/powernv/opal-call.c | 2 ++
>   3 files changed, 8 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h
> index 383242eb0dea..c58161cd7cfb 100644
> --- a/arch/powerpc/include/asm/opal-api.h
> +++ b/arch/powerpc/include/asm/opal-api.h
> @@ -208,7 +208,9 @@
>   #define OPAL_HANDLE_HMI2			166
>   #define	OPAL_NX_COPROC_INIT			167
>   #define OPAL_XIVE_GET_VP_STATE			170
> -#define OPAL_LAST				170
> +#define OPAL_NPU_MEM_ALLOC			171
> +#define OPAL_NPU_MEM_RELEASE			172
> +#define OPAL_LAST				172
>   
>   #define QUIESCE_HOLD			1 /* Spin all calls at entry */
>   #define QUIESCE_REJECT			2 /* Fail all calls with OPAL_BUSY */
> diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
> index 57bd029c715e..8c957a003be4 100644
> --- a/arch/powerpc/include/asm/opal.h
> +++ b/arch/powerpc/include/asm/opal.h
> @@ -39,6 +39,9 @@ int64_t opal_npu_spa_clear_cache(uint64_t phb_id, uint32_t bdfn,
>   				uint64_t PE_handle);
>   int64_t opal_npu_tl_set(uint64_t phb_id, uint32_t bdfn, long cap,
>   			uint64_t rate_phys, uint32_t size);
> +int64_t opal_npu_mem_alloc(uint64_t phb_id, uint32_t bdfn,
> +			uint64_t size, uint64_t *bar);
> +int64_t opal_npu_mem_release(uint64_t phb_id, uint32_t bdfn);
>   int64_t opal_console_write(int64_t term_number, __be64 *length,
>   			   const uint8_t *buffer);
>   int64_t opal_console_read(int64_t term_number, __be64 *length,
> diff --git a/arch/powerpc/platforms/powernv/opal-call.c b/arch/powerpc/platforms/powernv/opal-call.c
> index 29ca523c1c79..09a280446507 100644
> --- a/arch/powerpc/platforms/powernv/opal-call.c
> +++ b/arch/powerpc/platforms/powernv/opal-call.c
> @@ -287,3 +287,5 @@ OPAL_CALL(opal_pci_set_pbcq_tunnel_bar,		OPAL_PCI_SET_PBCQ_TUNNEL_BAR);
>   OPAL_CALL(opal_sensor_read_u64,			OPAL_SENSOR_READ_U64);
>   OPAL_CALL(opal_sensor_group_enable,		OPAL_SENSOR_GROUP_ENABLE);
>   OPAL_CALL(opal_nx_coproc_init,			OPAL_NX_COPROC_INIT);
> +OPAL_CALL(opal_npu_mem_alloc,			OPAL_NPU_MEM_ALLOC);
> +OPAL_CALL(opal_npu_mem_release,			OPAL_NPU_MEM_RELEASE);
> 

-- 
Andrew Donnellan              OzLabs, ADL Canberra
ajd@linux.ibm.com             IBM Australia Limited