diff options
Diffstat (limited to 'drivers/dma/mv_xor.c')
| -rw-r--r-- | drivers/dma/mv_xor.c | 56 |
1 files changed, 49 insertions, 7 deletions
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c index 6d012a56b97b..25d1dadcddd1 100644 --- a/drivers/dma/mv_xor.c +++ b/drivers/dma/mv_xor.c @@ -34,6 +34,7 @@ enum mv_xor_type { XOR_ORION, XOR_ARMADA_38X, + XOR_ARMADA_37XX, }; enum mv_xor_mode { @@ -1093,6 +1094,33 @@ mv_xor_conf_mbus_windows(struct mv_xor_device *xordev, writel(0, base + WINDOW_OVERRIDE_CTRL(1)); } +static void +mv_xor_conf_mbus_windows_a3700(struct mv_xor_device *xordev) +{ + void __iomem *base = xordev->xor_high_base; + u32 win_enable = 0; + int i; + + for (i = 0; i < 8; i++) { + writel(0, base + WINDOW_BASE(i)); + writel(0, base + WINDOW_SIZE(i)); + if (i < 4) + writel(0, base + WINDOW_REMAP_HIGH(i)); + } + /* + * For Armada3700 open default 4GB Mbus window. The dram + * related configuration are done at AXIS level. + */ + writel(0xffff0000, base + WINDOW_SIZE(0)); + win_enable |= 1; + win_enable |= 3 << 16; + + writel(win_enable, base + WINDOW_BAR_ENABLE(0)); + writel(win_enable, base + WINDOW_BAR_ENABLE(1)); + writel(0, base + WINDOW_OVERRIDE_CTRL(0)); + writel(0, base + WINDOW_OVERRIDE_CTRL(1)); +} + /* * Since this XOR driver is basically used only for RAID5, we don't * need to care about synchronizing ->suspend with DMA activity, @@ -1137,6 +1165,11 @@ static int mv_xor_resume(struct platform_device *dev) XOR_INTR_MASK(mv_chan)); } + if (xordev->xor_type == XOR_ARMADA_37XX) { + mv_xor_conf_mbus_windows_a3700(xordev); + return 0; + } + dram = mv_mbus_dram_info(); if (dram) mv_xor_conf_mbus_windows(xordev, dram); @@ -1147,6 +1180,7 @@ static int mv_xor_resume(struct platform_device *dev) static const struct of_device_id mv_xor_dt_ids[] = { { .compatible = "marvell,orion-xor", .data = (void *)XOR_ORION }, { .compatible = "marvell,armada-380-xor", .data = (void *)XOR_ARMADA_38X }, + { .compatible = "marvell,armada-3700-xor", .data = (void *)XOR_ARMADA_37XX }, {}, }; @@ -1204,9 +1238,13 @@ static int mv_xor_probe(struct platform_device *pdev) /* * (Re-)program MBUS remapping windows if we are asked to. */ - dram = mv_mbus_dram_info(); - if (dram) - mv_xor_conf_mbus_windows(xordev, dram); + if (xordev->xor_type == XOR_ARMADA_37XX) { + mv_xor_conf_mbus_windows_a3700(xordev); + } else { + dram = mv_mbus_dram_info(); + if (dram) + mv_xor_conf_mbus_windows(xordev, dram); + } /* Not all platforms can gate the clock, so it is not * an error if the clock does not exists. @@ -1220,12 +1258,16 @@ static int mv_xor_probe(struct platform_device *pdev) * order for async_tx to perform well. So we limit the number * of engines and channels so that we take into account this * constraint. Note that we also want to use channels from - * separate engines when possible. + * separate engines when possible. For dual-CPU Armada 3700 + * SoC with single XOR engine allow using its both channels. */ max_engines = num_present_cpus(); - max_channels = min_t(unsigned int, - MV_XOR_MAX_CHANNELS, - DIV_ROUND_UP(num_present_cpus(), 2)); + if (xordev->xor_type == XOR_ARMADA_37XX) + max_channels = num_present_cpus(); + else + max_channels = min_t(unsigned int, + MV_XOR_MAX_CHANNELS, + DIV_ROUND_UP(num_present_cpus(), 2)); if (mv_xor_engine_count >= max_engines) return 0; |
