diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2015-03-13 03:00:06 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2015-03-13 03:00:06 +0000 |
| commit | 593870715795116a7f644afc5d8a6602f71fdab5 (patch) | |
| tree | e20977ea93ae738fa1fe7ab7b7c237fd4ba87821 /target/linux | |
| parent | 93e709e333577a2bb58c63b87377fadda2ddce3c (diff) | |
| download | upstream-593870715795116a7f644afc5d8a6602f71fdab5.tar.gz upstream-593870715795116a7f644afc5d8a6602f71fdab5.tar.bz2 upstream-593870715795116a7f644afc5d8a6602f71fdab5.zip | |
atheros: v3.18: move PCI enable code to arch
Move PCI host interface enable code to arch, since it touches generic
SoC registers outside the PCI MMR region.
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44718 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/atheros/patches-3.18/105-ar2315_pci.patch | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/target/linux/atheros/patches-3.18/105-ar2315_pci.patch b/target/linux/atheros/patches-3.18/105-ar2315_pci.patch index 0d79a3be10..c3456ed2a2 100644 --- a/target/linux/atheros/patches-3.18/105-ar2315_pci.patch +++ b/target/linux/atheros/patches-3.18/105-ar2315_pci.patch @@ -10,7 +10,7 @@ obj-$(CONFIG_MIPS_PCI_VIRTIO) += pci-virtio-guest.o --- /dev/null +++ b/arch/mips/pci/pci-ar2315.c -@@ -0,0 +1,447 @@ +@@ -0,0 +1,428 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License @@ -378,7 +378,6 @@ +static int ar2315_pci_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; -+ u32 reg; + int res; + + /* Remap PCI config space */ @@ -389,24 +388,6 @@ + return -ENOMEM; + } + -+ /* Reset PCI DMA logic */ -+ reg = ar231x_mask_reg(AR2315_RESET, 0, AR2315_RESET_PCIDMA); -+ msleep(20); -+ reg &= ~AR2315_RESET_PCIDMA; -+ ar231x_write_reg(AR2315_RESET, reg); -+ msleep(20); -+ -+ ar231x_mask_reg(AR2315_ENDIAN_CTL, 0, -+ AR2315_CONFIG_PCIAHB | AR2315_CONFIG_PCIAHB_BRIDGE); -+ -+ ar231x_write_reg(AR2315_PCICLK, AR2315_PCICLK_PLLC_CLKM | -+ (AR2315_PCICLK_IN_FREQ_DIV_6 << AR2315_PCICLK_DIV_S)); -+ ar231x_mask_reg(AR2315_AHB_ARB_CTL, 0, AR2315_ARB_PCI); -+ ar231x_mask_reg(AR2315_IF_CTL, AR2315_IF_PCI_CLK_MASK | AR2315_IF_MASK, -+ AR2315_IF_PCI | AR2315_IF_PCI_HOST | -+ AR2315_IF_PCI_INTR | (AR2315_IF_PCI_CLK_OUTPUT_CLK << -+ AR2315_IF_PCI_CLK_SHIFT)); -+ + /* Reset the PCI bus by setting bits 5-4 in PCI_MCFG */ + ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_RST_MODE, + AR2315_PCIRST_LOW); @@ -484,13 +465,34 @@ else if (pending & CAUSEF_IP2) do_IRQ(AR2315_IRQ_MISC_INTRS); else if (pending & CAUSEF_IP7) -@@ -427,4 +431,10 @@ void __init ar2315_arch_init(void) +@@ -427,4 +431,31 @@ void __init ar2315_arch_init(void) { ath25_serial_setup(AR2315_UART0, AR2315_MISC_IRQ_UART0, ar2315_apb_frequency()); + +#ifdef CONFIG_PCI_AR2315 + if (ath25_soc == ATH25_SOC_AR2315) { ++ /* Reset PCI DMA logic */ ++ ar231x_mask_reg(AR2315_RESET, 0, AR2315_RESET_PCIDMA); ++ msleep(20); ++ ar231x_mask_reg(AR2315_RESET, AR2315_RESET_PCIDMA, 0); ++ msleep(20); ++ ++ /* Configure endians */ ++ ar231x_mask_reg(AR2315_ENDIAN_CTL, 0, AR2315_CONFIG_PCIAHB | ++ AR2315_CONFIG_PCIAHB_BRIDGE); ++ ++ /* Configure as PCI host with DMA */ ++ ar231x_write_reg(AR2315_PCICLK, AR2315_PCICLK_PLLC_CLKM | ++ (AR2315_PCICLK_IN_FREQ_DIV_6 << ++ AR2315_PCICLK_DIV_S)); ++ ar231x_mask_reg(AR2315_AHB_ARB_CTL, 0, AR2315_ARB_PCI); ++ ar231x_mask_reg(AR2315_IF_CTL, AR2315_IF_PCI_CLK_MASK | ++ AR2315_IF_MASK, AR2315_IF_PCI | ++ AR2315_IF_PCI_HOST | AR2315_IF_PCI_INTR | ++ (AR2315_IF_PCI_CLK_OUTPUT_CLK << ++ AR2315_IF_PCI_CLK_SHIFT)); ++ + platform_device_register_simple("ar2315-pci", -1, NULL, 0); + } +#endif |