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| author |   Arnd Bergmann <arnd@arndb.de> | 2019-08-09 16:40:32 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-08-15 21:33:49 +0200 |
| commit | 9dc03ffd996d4103cc2a11286d61e517bce27440 (patch) | |
| tree | 468e29c77d448d945d299cb0df25e84a17f39906 /drivers/net/ethernet/nxp/lpc_eth.c | |
| parent | gpio: lpc32xx: allow building on non-lpc32xx targets (diff) | |
| download | linux-dev-9dc03ffd996d4103cc2a11286d61e517bce27440.tar.xz linux-dev-9dc03ffd996d4103cc2a11286d61e517bce27440.zip | |
net: lpc-enet: factor out iram access
The lpc_eth driver uses a platform specific method to find
the internal sram. This prevents building it on other machines.
Rework to only use one function call and keep the other platform
internals where they belong. Ideally this would look up the
sram location from DT, but as this is a rarely used driver,
I want to keep the modifications to a minimum.
Link: https://lore.kernel.org/r/20190809144043.476786-7-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/net/ethernet/nxp/lpc_eth.c')
| -rw-r--r-- | drivers/net/ethernet/nxp/lpc_eth.c | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index f7e11f1b0426..bcdd0adcfb0c 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -18,8 +18,8 @@ #include <linux/phy.h> #include <linux/platform_device.h> #include <linux/spinlock.h> +#include <linux/soc/nxp/lpc32xx-misc.h> -#include <mach/board.h> #include <mach/hardware.h> #include <mach/platform.h> @@ -1311,16 +1311,15 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) /* Get size of DMA buffers/descriptors region */ pldat->dma_buff_size = (ENET_TX_DESC + ENET_RX_DESC) * (ENET_MAXF_SIZE + sizeof(struct txrx_desc_t) + sizeof(struct rx_status_t)); - pldat->dma_buff_base_v = 0; if (use_iram_for_net(dev)) { - dma_handle = LPC32XX_IRAM_BASE; - if (pldat->dma_buff_size <= lpc32xx_return_iram_size()) - pldat->dma_buff_base_v = - io_p2v(LPC32XX_IRAM_BASE); - else + if (pldat->dma_buff_size > + lpc32xx_return_iram(&pldat->dma_buff_base_v, &dma_handle)) { + pldat->dma_buff_base_v = NULL; + pldat->dma_buff_size = 0; netdev_err(ndev, "IRAM not big enough for net buffers, using SDRAM instead.\n"); + } } if (pldat->dma_buff_base_v == 0) { @@ -1409,7 +1408,7 @@ err_out_unregister_netdev: unregister_netdev(ndev); err_out_dma_unmap: if (!use_iram_for_net(dev) || - pldat->dma_buff_size > lpc32xx_return_iram_size()) + pldat->dma_buff_size > lpc32xx_return_iram(NULL, NULL)) dma_free_coherent(dev, pldat->dma_buff_size, pldat->dma_buff_base_v, pldat->dma_buff_base_p); @@ -1436,7 +1435,7 @@ static int lpc_eth_drv_remove(struct platform_device *pdev) unregister_netdev(ndev); if (!use_iram_for_net(&pldat->pdev->dev) || - pldat->dma_buff_size > lpc32xx_return_iram_size()) + pldat->dma_buff_size > lpc32xx_return_iram(NULL, NULL)) dma_free_coherent(&pldat->pdev->dev, pldat->dma_buff_size, pldat->dma_buff_base_v, pldat->dma_buff_base_p); |