Re: [PATCH v2 4/4] can: peak: add support for PEAK PCAN-PCIe FD CAN-FD boards

[Marc Kleine-Budde <mkl@pengutronix.de>]

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On 01/02/2017 01:34 PM, Stephane Grosjean wrote:
> This patch adds the support of the PCAN-PCI Express FD boards made
> by PEAK-System, for computers using the PCI Express slot.
> 
> The PCAN-PCI Express FD has one or two CAN FD channels, depending
> on the model. A galvanic isolation of the CAN ports protects
> the electronics of the card and the respective computer against
> disturbances of up to 500 Volts. The PCAN-PCI Express FD can be operated
> with ambient temperatures in a range of -40 to +85 °C.
> 
> Such boards run an extented version of the CAN-FD IP running into USB
> CAN-FD interfaces from PEAK-System, so this patch adds several new commands
> and their corresponding data types to the PEAK CAN-FD common definitions
> header file too.
> 
> Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>

> +/* CAN-FD channel object */
> +struct pciefd_board;
> +struct pciefd_can {
> +	struct peak_canfd_priv ucan;	/* must be the first member */
> +	void __iomem *reg_base;		/* channel config base addr */
> +	struct pciefd_board *board;	/* reverse link */
> +
> +	struct pucan_command pucan_cmd;	/* command buffer */
> +
> +	u32 flags;

not used.

> +
> +	dma_addr_t rx_dma_laddr;	/* DMA virtual and logical addr */
> +	void *rx_dma_vaddr;		/* for Rx and Tx areas */
> +	dma_addr_t tx_dma_laddr;
> +	void *tx_dma_vaddr;
> +
> +	struct pciefd_page tx_pages[PCIEFD_TX_PAGE_COUNT];
> +	u16 tx_pages_free;		/* free Tx pages counter */
> +	u16 tx_page_index;		/* current page used for Tx */
> +
> +	struct pciefd_irq_status irq_status;	/* current irq status */
> +	u32 irq_tag;				/* next irq tag */
> +};

Marc

-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
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