2011/4/10 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

On 16:08 Sat 09 Apr , franck.jullien@gmail.com wrote:
> From: Franck JULLIEN <franck.jullien@gmail.com>
>
> Add Altera Triple Speed Ethernet driver
>
> Signed-off-by: Franck JULLIEN <franck.jullien@gmail.com>
> ---
> drivers/net/Kconfig | 16 ++
> drivers/net/Makefile | 5 +-
> drivers/net/altera_tse.c | 620 ++++++++++++++++++++++++++++++++++++++++++++++
> drivers/net/altera_tse.h | 313 +++++++++++++++++++++++
> 4 files changed, 952 insertions(+), 2 deletions(-)
> create mode 100644 drivers/net/altera_tse.c
> create mode 100644 drivers/net/altera_tse.h
>
> diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
> index 6479417..19e35db 100644
> --- a/drivers/net/Kconfig
> +++ b/drivers/net/Kconfig
> @@ -84,6 +84,22 @@ config DRIVER_NET_TAP
> bool "tap Ethernet driver"
> depends on LINUX
>
> +config DRIVER_NET_TSE
> + depends on NIOS2
> + bool "Altera TSE ethernet driver"
> + select MIIDEV
> + help
> + This option enables support for the Altera TSE MAC.
> +
> +config TSE_USE_DEDICATED_DESC_MEM
> + depends on DRIVER_NET_TSE
> + bool "Altera TSE uses dedicated descriptor memory"
> + help
> + This option tells the TSE driver to use an onchip memory
> + to store SGDMA descriptors. Descriptor memory is not
> + reserved with a malloc but directly mapped to the memory
> + address (defined in config.h)
> +
> source "drivers/net/usb/Kconfig"
>
> endmenu
> diff --git a/drivers/net/Makefile b/drivers/net/Makefile
> index 96d3d32..f02618b 100644
> --- a/drivers/net/Makefile
> +++ b/drivers/net/Makefile
> @@ -1,7 +1,7 @@
> -obj-$(CONFIG_DRIVER_NET_CS8900) += cs8900.o
> +obj-$(CONFIG_DRIVER_NET_CS8900) += cs8900.o
> obj-$(CONFIG_DRIVER_NET_SMC911X) += smc911x.o
> obj-$(CONFIG_DRIVER_NET_SMC91111) += smc91111.o
> -obj-$(CONFIG_DRIVER_NET_DM9000) += dm9000.o
> +obj-$(CONFIG_DRIVER_NET_DM9000) += dm9000.o

why do you touch this two?

if you want to fix the whitespace please do it in an other commit

OK, I'll correct this.

> obj-$(CONFIG_DRIVER_NET_NETX) += netx_eth.o
> obj-$(CONFIG_DRIVER_NET_AT91_ETHER) += at91_ether.o
> obj-$(CONFIG_DRIVER_NET_MPC5200) += fec_mpc5200.o
> @@ -11,3 +11,4 @@ obj-$(CONFIG_DRIVER_NET_MACB) += macb.o
> obj-$(CONFIG_DRIVER_NET_TAP) += tap.o
> obj-$(CONFIG_MIIDEV) += miidev.o
> obj-$(CONFIG_NET_USB) += usb/
> +obj-$(CONFIG_DRIVER_NET_TSE) += altera_tse.o
> diff --git a/drivers/net/altera_tse.c b/drivers/net/altera_tse.c
> new file mode 100644
> index 0000000..2687377
> --- /dev/null
> +

> +static int tse_get_ethaddr(struct eth_device *edev, unsigned char *m)
> +{
> + /* There is no eeprom */

so return the content of the register no?

Well, the register is reseted to 0 when the MAC starts so there is no Ethernet address

to get.

> + return -1;
> +}
> +

> +static int tse_eth_send(struct eth_device *edev, void *packet, int length)
> +{
> +
> + struct altera_tse_priv *priv = edev->priv;
> + struct alt_sgdma_registers *tx_sgdma = priv->sgdma_tx;
> + struct alt_sgdma_descriptor *tx_desc = (struct alt_sgdma_descriptor *)priv->tx_desc;
> +
> + struct alt_sgdma_descriptor *tx_desc_cur = (struct alt_sgdma_descriptor *)&tx_desc[0];
> +
> + flush_dcache_range((uint32_t)packet, (uint32_t)packet + length);
> + alt_sgdma_construct_descriptor_burst(
> + (struct alt_sgdma_descriptor *)&tx_desc[0],
> + (struct alt_sgdma_descriptor *)&tx_desc[1],
> + (uint32_t *)packet, /* read addr */
> + (uint32_t *)0, /* */
> + length, /* length or EOP ,will change for each tx */
> + 0x1, /* gen eop */
> + 0x0, /* read fixed */
> + 0x1, /* write fixed or sop */
> + 0x0, /* read burst */
> + 0x0, /* write burst */
> + 0x0 /* channel */

please use tab for indent I see other in the patch please check

I use tab for indent, spaces for alignment. I checked the patch with checkpatch and it

didn't find errors.....

> + );
> +
> + alt_sgdma_do_sync_transfer(tx_sgdma, tx_desc_cur);
> +
> + return 0;;
> +}
> +
> +static void tse_eth_halt(struct eth_device *edev)
> +{
> + struct altera_tse_priv *priv = edev->priv;
> + struct alt_sgdma_registers *rx_sgdma = priv->sgdma_rx;
> + struct alt_sgdma_registers *tx_sgdma = priv->sgdma_tx;
> +
> + writel(0, &rx_sgdma->control); /* Stop the controller and reset settings */
> + writel(0, &tx_sgdma->control); /* Stop the controller and reset settings */
> +}
> +
> +static int tse_eth_rx(struct eth_device *edev)
> +{
> + uint16_t packet_length = 0;
> +
> + struct altera_tse_priv *priv = edev->priv;
> + struct alt_sgdma_descriptor *rx_desc = (struct alt_sgdma_descriptor *)priv->rx_desc;
> + struct alt_sgdma_descriptor *rx_desc_cur = &rx_desc[0];
> + struct alt_sgdma_registers *rx_sgdma = priv->sgdma_rx;
> +
> + if (rx_desc_cur->descriptor_status &
> + ALT_SGDMA_DESCRIPTOR_STATUS_TERMINATED_BY_EOP_MSK) {
> +
> + packet_length = rx_desc->actual_bytes_transferred;
> + net_receive(NetRxPackets[0], packet_length);
> +
> + /* Clear Run */
> + rx_sgdma->control = (rx_sgdma->control & (~ALT_SGDMA_CONTROL_RUN_MSK));
> +
> + /* start descriptor again */
> + flush_dcache_range((uint32_t)(NetRxPackets[0]), (uint32_t)(NetRxPackets[0]) + PKTSIZE);
> + alt_sgdma_construct_descriptor_burst(
> + (struct alt_sgdma_descriptor *)&rx_desc[0],
> + (struct alt_sgdma_descriptor *)&rx_desc[1],
> + (uint32_t)0x0, /* read addr */
> + (uint32_t *)NetRxPackets[0], /* */
> + 0x0, /* length or EOP */
> + 0x0, /* gen eop */
> + 0x0, /* read fixed */
> + 0x0, /* write fixed or sop */
> + 0x0, /* read burst */
> + 0x0, /* write burst */
> + 0x0 /* channel */

please use tab for indent

> + );
> +
> + /* setup the sgdma */
> + alt_sgdma_do_async_transfer(priv->sgdma_rx, &rx_desc[0]);
> + }
> +
> + return 0;
> +}
> +
> +static char *get_phy_name(uint32_t phy_ID)
> +{
> + uint8_t i = 0;
> +
> + while (phy_name_table[i].phy_ID != 0) {
> + if (phy_name_table[i].phy_ID == phy_ID)
> + return phy_name_table[i].name;
> + i++;
> + }
> +
> + return "unknown";
> +}

why this?

> +
> +static int check_phy_address(struct eth_device *edev)
> +{
> + struct altera_tse_priv *priv = edev->priv;
> + uint8_t mii_bus_scan = 0;
> + uint8_t current_mii_address = 1;
> + uint32_t phy_reg;
> + uint32_t phy_ID;
> +
> + if ((priv->miidev)->address < 0)
> + mii_bus_scan = 1;
> + else
> + current_mii_address = (priv->miidev)->address;
> +
> + do {
> + /* Grab the bits from PHYIR1, and put them in the upper half */
> + phy_reg = tse_phy_read(priv->miidev, current_mii_address, MII_PHYSID1);
> + phy_ID = (phy_reg & 0xffff) << 16;
> +
> + /* Grab the bits from PHYIR2, and put them in the lower half */
> + phy_reg = tse_phy_read(priv->miidev, current_mii_address, MII_PHYSID2);
> + phy_ID |= (phy_reg & 0xffff);
> +
> + if (phy_ID != 0xffffffff) {
> + printf("PHY (%s) found at address %d\n", get_phy_name(phy_ID), current_mii_address);
> + (priv->miidev)->address = current_mii_address;
> + return 0;
> + }
> +
> + current_mii_address++;
> +
> + } while (current_mii_address < 32 && mii_bus_scan);
> +
> + return -1;
> +}
> +

why this?

Because sometimes (often ?), hardware doesn't run first time. So I like to

have some information on MII bus running correctly....One day I had a PHY

getting the address 1 and sometimes this f***ing PHY got 31 and this

kind of auto scan helped me to immediately find the problem......

I could remove those function if it is a problem....

Best Regards,
J.