linux-kernel - Re: [PATCH 1/2] PCI: endpoint: Introduce 'get

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Message-ID: <ZqLJIDz1P7H9tIu9@ryzen.lan>
Date: Thu, 25 Jul 2024 23:52:32 +0200
From: Niklas Cassel <cassel@...nel.org>
To: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: Rick Wertenbroek <rick.wertenbroek@...il.com>,
	rick.wertenbroek@...g-vd.ch, alberto.dassatti@...g-vd.ch,
	Krzysztof Wilczyński <kw@...ux.com>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>, Frank Li <Frank.Li@....com>,
	Damien Le Moal <dlemoal@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 1/2] PCI: endpoint: Introduce 'get_bar' to map fixed
 address BARs in EPC

On Thu, Jul 25, 2024 at 10:06:52PM +0530, Manivannan Sadhasivam wrote:
> 
> I vary with you here. IMO EPF drivers have no business in knowing the BAR
> location as they are independent of controller (mostly except drivers like MHI).
> So an EPF driver should call a single API that just allocates/configures the
> BAR. For fixed address BAR, EPC core should be able to figure it out using the
> EPC features.
> 
> For naming, we have 3 proposals as of now:
> 
> 1. pci_epf_setup_bar() - This looks good, but somewhat collides with the
> existing pci_epc_set_bar() API.
> 
> 2. pci_epc_alloc_set_bar() - Looks ugly, but aligns with the existing APIs.
> 
> 3. pci_epc_get_bar() - Also looks good, but the usage of 'get' gives the
> impression that the BAR is fetched from somewhere, which is true for fixed
> address BAR, but not for dynamic BAR.

pci_epc_configure_bar() ?
we could name the 'struct pci_epf_bar *' param 'conf'


Kind regards,
Niklas