linux-kernel - Re: Habanalabs, Ask for the linux firmware code which loads by coprocesseor

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Message-ID: <20211210125443.GA21176@chq-T47>
Date:   Fri, 10 Dec 2021 20:54:43 +0800
From:   Cai Huoqing <cai.huoqing@...ux.dev>
To:     Oded Gabbay <ogabbay@...nel.org>
Cc:     Maling list - DRI developers <dri-devel@...ts.freedesktop.org>,
        "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: Habanalabs, Ask for the linux firmware code which loads by
 coprocesseor

On 09 12月 21 14:23:45, Oded Gabbay wrote:
> On Tue, Dec 7, 2021 at 9:19 AM Cai Huoqing <cai.huoqing@...ux.dev> wrote:
> >
> > Hi Oded Gabbay and habanalabs folks.
> >
> > I'm insterested in this kind of AI acceralator.
> >
> > After scanning the driver code.
> > It seems that there are a linux firmware which is loaded by
> > coprocessor(an slave cpu ?).
> > shows in the code.
> >
> > ./goya/goya.c:74:#define GOYA_LINUX_FW_FILE     "habanalabs/goya/goya-fit.itb"
> > ./goya/goya.c:2436:     return hl_fw_load_fw_to_device(hdev, GOYA_LINUX_FW_FILE, dst, 0, 0);
> > ./goya/goya.c:2507:     fw_loader->linux_img.image_name = GOYA_LINUX_FW_FILE;
> > ./gaudi/gaudi.c:63:#define GAUDI_LINUX_FW_FILE  "habanalabs/gaudi/gaudi-fit.itb"
> > ./gaudi/gaudi.c:3945:   return hl_fw_load_fw_to_device(hdev, GAUDI_LINUX_FW_FILE, dst, 0, 0);
> > ./gaudi/gaudi.c:4011:   fw_loader->linux_img.image_name = GAUDI_LINUX_FW_FILE;
> >
> > And the host driver(/driver/misc/habanalabs) communicate with the slave firmware
> > by MMIO or share memory, right?
> >
> > If that, would you mind provide the source code of linux firmware
> > to avoid the confusion from code reading.
> Hi Cai,
> 
> You can download the source code from:
> https://vault.habana.ai/artifactory/misc/hl-linux.bz2
Thanks, that's what I need, pretty nice code!
And I will be glad to see you taking it into the linux mailine soon.

Thanks,
Cai
> 
> >
> > BTW, where can I find the register description datasheet
> We don't supply this information.
> Thanks,
> Oded