From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Joel Fernandes <joelagnelf@nvidia.com>,
linux-kernel@vger.kernel.org, Danilo Krummrich <dakr@kernel.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
Jonathan Corbet <corbet@lwn.net>
Cc: nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
Alexandre Courbot <acourbot@nvidia.com>,
John Hubbard <jhubbard@nvidia.com>,
Shirish Baskaran <sbaskaran@nvidia.com>,
Alistair Popple <apopple@nvidia.com>,
Timur Tabi <ttabi@nvidia.com>, Ben Skeggs <bskeggs@nvidia.com>,
rust-for-linux@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v2 6/7] docs: nova-core: Document basics of the Falcon
Date: Mon, 5 May 2025 11:14:01 +0700 [thread overview]
Message-ID: <aBg7CUoAo1xyYlo8@archie.me> (raw)
In-Reply-To: <20250503040802.1411285-7-joelagnelf@nvidia.com>
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On Sat, May 03, 2025 at 12:07:58AM -0400, Joel Fernandes wrote:
> +Conceptual diagram (not exact) of the Falcon and its memory subsystem is as follows:
> +
> + External Memory (Framebuffer / System DRAM)
> + ▲ │
> + │ │
> + │ ▼
> +┏━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━┻━━━━━━━━━━━━━━━━━━━━━━┓
> +┃ │ ┃
> +┃ ┏━━━━━━━━━━━━━━━┓ │ ┃
> +┃ ┃ FBIF ┣━━━━━━━┛ ┃ FALCON
> +┃ ┃ (FrameBuffer ┃ Memory Interface ┃ PROCESSOR
> +┃ ┃ InterFace) ┃ ┃
> +┃ ┃ Apertures ┃ ┃
> +┃ ┃ Configures ┃ ┃
> +┃ ┃ mem access ┃ ┃
> +┃ ┗━━━━━━━▲━━━━━━━┛ ┃
> +┃ │ ┃
> +┃ │ FBDMA uses configured FBIF apertures ┃
> +┃ │ to access External Memory
> +┃ │
> +┃ ┏━━━━━━━▼━━━━━━━┓ ┏━━━━━━━━━━━━━━━━┓
> +┃ ┃ FBDMA ┃ cfg ┃ RISC ┃
> +┃ ┃ (FrameBuffer ┣<────>┫ CORE ┣─────>. Direct Core Access
> +┃ ┃ DMA Engine) ┃ ┃ ┃ ┃
> +┃ ┃ - Master dev. ┃ ┃ (can run both ┃ ┃
> +┃ ┗━━━━━━━▲━━━━━━━┛ ┃ Falcon and ┃ ┃
> +┃ │ cfg-->┃ RISC-V code) ┃ ┃
> +┃ │ / ┃ ┃ ┃
> +┃ │ | ┗━━━━━━━━━━━━━━━━┛ ┃ ┏━━━━━━━━━━━━┓
> +┃ │ │ ┃ ┃ BROM ┃
> +┃ │ │ <───>┫ (Boot ROM) ┃
> +┃ │ / ┃ ┗━━━━━━━━━━━━┛
> +┃ │ ▼ ┃
> +┃ ┏━━━━━━━━━━━━━━━┓ ┃
> +┃ ┃ IO-PMP ┃ Controls access by FBDMA ┃
> +┃ ┃ (IO Physical ┃ and other IO Masters ┃
> +┃ ┃ Memory Protect) ┃
> +┃ ┗━━━━━━━▲━━━━━━━┛ ┃
> +┃ │ ┃
> +┃ │ Protected Access Path for FBDMA ┃
> +┃ ▼ ┃
> +┃ ┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓ ┃
> +┃ ┃ Memory ┃ ┃
> +┃ ┃ ┏━━━━━━━━━━━━━━━┓ ┏━━━━━━━━━━━━━┓ ┃ ┃
> +┃ ┃ ┃ IMEM ┃ ┃ DMEM ┃ ┃<─────┛
> +┃ ┃ ┃ (Instruction ┃ ┃ (Data ┃ ┃
> +┃ ┃ ┃ Memory) ┃ ┃ Memory) ┃ ┃
> +┃ ┃ ┗━━━━━━━━━━━━━━━┛ ┗━━━━━━━━━━━━━┛ ┃
> +┃ ┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┛
> +┗━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Wrap the diagram in literal code block. Also, note that it can look messy in
htmldocs output with certain fonts due to box drawing characters. Consider using
ASCII constructs (dashes and vertical bars) instead.
Thanks.
--
An old man doll... just what I always wanted! - Clara
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next prev parent reply other threads:[~2025-05-05 4:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-03 4:07 [PATCH v2 0/7] Documentation for nova-core Joel Fernandes
2025-05-03 4:07 ` [PATCH v2 1/7] nova-core: doc: Add code comments related to devinit Joel Fernandes
2025-05-03 4:07 ` [PATCH v2 2/7] nova-core: doc: Clarify sysmembar operations Joel Fernandes
2025-05-03 4:07 ` [PATCH v2 3/7] nova-core: docs: Document vbios layout Joel Fernandes
2025-05-05 3:00 ` Bagas Sanjaya
2025-05-05 3:12 ` Bagas Sanjaya
2025-05-03 4:07 ` [PATCH v2 4/7] nova-core: docs: Document fwsec operation and layout Joel Fernandes
2025-05-05 3:52 ` Bagas Sanjaya
2025-05-06 16:26 ` Zhi Wang
2025-05-09 20:56 ` Joel Fernandes
2025-05-03 4:07 ` [PATCH v2 5/7] docs: nova-core: Document devinit process Joel Fernandes
2025-05-05 4:04 ` Bagas Sanjaya
2025-05-05 22:15 ` Joel Fernandes
2025-05-03 4:07 ` [PATCH v2 6/7] docs: nova-core: Document basics of the Falcon Joel Fernandes
2025-05-05 4:14 ` Bagas Sanjaya [this message]
2025-05-05 21:37 ` Joel Fernandes
2025-05-03 4:07 ` [PATCH v2 7/7] gpu: nova-core: Clarify falcon code Joel Fernandes
2025-05-06 16:21 ` Zhi Wang
2025-05-09 20:59 ` Joel Fernandes
2025-06-30 10:37 ` [PATCH v2 0/7] Documentation for nova-core Danilo Krummrich
2025-06-30 11:33 ` Alexandre Courbot
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