* Re: [PATCH] powerpc: memcpy optimization for 64bit LE
From: Philippe Bergheaud @ 2013-11-06 10:21 UTC (permalink / raw)
To: Michael Neuling; +Cc: Linuxppc-dev
In-Reply-To: <11438.1383718966@ale.ozlabs.ibm.com>
Michael Neuling wrote:
> Philippe Bergheaud <felix@linux.vnet.ibm.com> wrote:
>
>
>>Unaligned stores take alignment exceptions on POWER7 running in little-endian.
>>This is a dumb little-endian base memcpy that prevents unaligned stores.
>>It is replaced by the VMX memcpy at boot.
>
>
> Is this any faster than the generic version?
The little-endian assembly code of the base memcpy is similar to the code emitted by gcc when compiling the generic memcpy in lib/string.c, and runs at the same speed.
However, a little-endian assembly version of the base memcpy is required (as opposed to a C version), in order to use the self-modifying code instrumentation system.
After the cpu feature CPU_FTR_ALTIVEC is detected at boot, the slow base memcpy is nop'ed out, and the fast memcpy_power7 is used instead.
Philippe
^ permalink raw reply
* Re: [PATCHv2 5/8] ASoC: SGTL5000: Enhance the SGTL5000 codec driver about regulator.
From: Mark Brown @ 2013-11-06 10:03 UTC (permalink / raw)
To: Li Xiubo
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang,
timur@tabi.org, perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, Guangyu Chen,
linux-arm-kernel@lists.infradead.org, grant.likely@linaro.org,
devicetree@vger.kernel.org, ian.campbell@citrix.com,
pawel.moll@arm.com, swarren@wwwdotorg.org,
rob.herring@calxeda.com, oskar@scara.com, Fabio Estevam,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, shawn.guo@linaro.org,
linuxppc-dev@lists.ozlabs.org
In-Reply-To: <1DD289F6464F0949A2FCA5AA6DC23F82876EFF@039-SN2MPN1-013.039d.mgd.msft.net>
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On Wed, Nov 06, 2013 at 08:59:53AM +0000, Li Xiubo wrote:
Please fix your mailer to word wrap within paragraphs.
> The SGTL5000 is based on regulators and when it is disabled, there
> will be an error returns directly while the SGTL5000 codec is probing.
What makes you say this? That's not how the regulator API works. Have
you actually seen any problems?
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^ permalink raw reply
* Re: [PATCHv2 1/8] ALSA: Add SAI SoC Digital Audio Interface driver.
From: Mark Brown @ 2013-11-06 9:53 UTC (permalink / raw)
To: Li Xiubo
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang,
timur@tabi.org, perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, Guangyu Chen,
linux-arm-kernel@lists.infradead.org, grant.likely@linaro.org,
devicetree@vger.kernel.org, ian.campbell@citrix.com,
pawel.moll@arm.com, swarren@wwwdotorg.org,
rob.herring@calxeda.com, oskar@scara.com, Fabio Estevam,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, shawn.guo@linaro.org,
linuxppc-dev@lists.ozlabs.org
In-Reply-To: <1DD289F6464F0949A2FCA5AA6DC23F82875482@039-SN2MPN1-013.039d.mgd.msft.net>
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On Tue, Nov 05, 2013 at 03:21:49AM +0000, Li Xiubo wrote:
> As your opinions, should I move the four register writing operations to .set_sysclk/set_clkdiv/... functions too ?
> Or just add a clk_disable_unprepare() after them here, and then add clk_prepare_enable in one of .set_sysclk/set_clkdiv/...?
The latter.
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^ permalink raw reply
* [PATCH V6 2/2] powerpc/85xx: Add TWR-P1025 board support
From: Xie Xiaobo @ 2013-11-06 9:08 UTC (permalink / raw)
To: linuxppc-dev, scottwood; +Cc: Michael Johnston, Xie Xiaobo
In-Reply-To: <1383728883-25561-1-git-send-email-X.Xie@freescale.com>
TWR-P1025 Overview
-----------------
512Mbyte DDR3 (on board DDR)
64MB Nor Flash
eTSEC1: Connected to RGMII PHY AR8035
eTSEC3: Connected to RGMII PHY AR8035
Two USB2.0 Type A
One microSD Card slot
One mini-PCIe slot
One mini-USB TypeB dual UART
Signed-off-by: Michael Johnston <michael.johnston@freescale.com>
Signed-off-by: Xie Xiaobo <X.Xie@freescale.com>
---
Patch V6: Add a binding doc for ssd1289 device.
Patch V5: Miscellaneous modification. e.g. move the qe ucc node into dtsi.
Patch V4: Fix the mdio phy interrupt issue in dts
Patch V3: fix pcie range issue in dts
Patch V2: QE related init codes were factored out to a common file
.../devicetree/bindings/video/ssd1289fb.txt | 13 +
arch/powerpc/boot/dts/p1025twr.dts | 95 +++++++
arch/powerpc/boot/dts/p1025twr.dtsi | 280 +++++++++++++++++++++
arch/powerpc/platforms/85xx/Kconfig | 6 +
arch/powerpc/platforms/85xx/Makefile | 1 +
arch/powerpc/platforms/85xx/twr_p102x.c | 147 +++++++++++
6 files changed, 542 insertions(+)
create mode 100644 Documentation/devicetree/bindings/video/ssd1289fb.txt
create mode 100644 arch/powerpc/boot/dts/p1025twr.dts
create mode 100644 arch/powerpc/boot/dts/p1025twr.dtsi
create mode 100644 arch/powerpc/platforms/85xx/twr_p102x.c
diff --git a/Documentation/devicetree/bindings/video/ssd1289fb.txt b/Documentation/devicetree/bindings/video/ssd1289fb.txt
new file mode 100644
index 0000000..4fcd5e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/ssd1289fb.txt
@@ -0,0 +1,13 @@
+* Solomon SSD1289 Framebuffer Driver
+
+Required properties:
+ - compatible: Should be "solomon,ssd1289fb". The only supported bus for
+ now is lbc.
+ - reg: Should contain address of the controller on the LBC bus. The detail
+ was described in Documentation/devicetree/bindings/powerpc/fsl/lbc.txt
+
+Examples:
+display@2,0 {
+ compatible = "solomon,ssd1289fb";
+ reg = <0x2 0x0000 0x0004>;
+};
diff --git a/arch/powerpc/boot/dts/p1025twr.dts b/arch/powerpc/boot/dts/p1025twr.dts
new file mode 100644
index 0000000..9036a49
--- /dev/null
+++ b/arch/powerpc/boot/dts/p1025twr.dts
@@ -0,0 +1,95 @@
+/*
+ * P1025 TWR Device Tree Source (32-bit address map)
+ *
+ * Copyright 2013 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/include/ "fsl/p1021si-pre.dtsi"
+/ {
+ model = "fsl,P1025";
+ compatible = "fsl,TWR-P1025";
+
+ memory {
+ device_type = "memory";
+ };
+
+ lbc: localbus@ffe05000 {
+ reg = <0 0xffe05000 0 0x1000>;
+
+ /* NOR Flash and SSD1289 */
+ ranges = <0x0 0x0 0x0 0xec000000 0x04000000
+ 0x2 0x0 0x0 0xe0000000 0x00020000>;
+ };
+
+ soc: soc@ffe00000 {
+ ranges = <0x0 0x0 0xffe00000 0x100000>;
+ };
+
+ pci0: pcie@ffe09000 {
+ ranges = <0x2000000 0x0 0xa0000000 0 0xa0000000 0x0 0x20000000
+ 0x1000000 0x0 0x00000000 0 0xffc10000 0x0 0x10000>;
+ reg = <0 0xffe09000 0 0x1000>;
+ pcie@0 {
+ ranges = <0x2000000 0x0 0xa0000000
+ 0x2000000 0x0 0xa0000000
+ 0x0 0x20000000
+
+ 0x1000000 0x0 0x0
+ 0x1000000 0x0 0x0
+ 0x0 0x100000>;
+ };
+ };
+
+ pci1: pcie@ffe0a000 {
+ reg = <0 0xffe0a000 0 0x1000>;
+ ranges = <0x2000000 0x0 0x80000000 0 0x80000000 0x0 0x20000000
+ 0x1000000 0x0 0x00000000 0 0xffc00000 0x0 0x10000>;
+ pcie@0 {
+ ranges = <0x2000000 0x0 0x80000000
+ 0x2000000 0x0 0x80000000
+ 0x0 0x20000000
+
+ 0x1000000 0x0 0x0
+ 0x1000000 0x0 0x0
+ 0x0 0x100000>;
+ };
+ };
+
+ qe: qe@ffe80000 {
+ ranges = <0x0 0x0 0xffe80000 0x40000>;
+ reg = <0 0xffe80000 0 0x480>;
+ brg-frequency = <0>;
+ bus-frequency = <0>;
+ };
+};
+
+/include/ "p1025twr.dtsi"
+/include/ "fsl/p1021si-post.dtsi"
diff --git a/arch/powerpc/boot/dts/p1025twr.dtsi b/arch/powerpc/boot/dts/p1025twr.dtsi
new file mode 100644
index 0000000..8453501
--- /dev/null
+++ b/arch/powerpc/boot/dts/p1025twr.dtsi
@@ -0,0 +1,280 @@
+/*
+ * P1025 TWR Device Tree Source stub (no addresses or top-level ranges)
+ *
+ * Copyright 2013 Freescale Semiconductor Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of Freescale Semiconductor nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ *
+ * ALTERNATIVELY, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") as published by the Free Software
+ * Foundation, either version 2 of that License or (at your option) any
+ * later version.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/{
+ aliases {
+ ethernet3 = &enet3;
+ ethernet4 = &enet4;
+ };
+};
+
+&lbc {
+ nor@0,0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "cfi-flash";
+ reg = <0x0 0x0 0x4000000>;
+ bank-width = <2>;
+ device-width = <1>;
+
+ partition@0 {
+ /* This location must not be altered */
+ /* 256KB for Vitesse 7385 Switch firmware */
+ reg = <0x0 0x00040000>;
+ label = "NOR Vitesse-7385 Firmware";
+ read-only;
+ };
+
+ partition@40000 {
+ /* 256KB for DTB Image */
+ reg = <0x00040000 0x00040000>;
+ label = "NOR DTB Image";
+ };
+
+ partition@80000 {
+ /* 5.5 MB for Linux Kernel Image */
+ reg = <0x00080000 0x00580000>;
+ label = "NOR Linux Kernel Image";
+ };
+
+ partition@400000 {
+ /* 56.75MB for Root file System */
+ reg = <0x00600000 0x038c0000>;
+ label = "NOR Root File System";
+ };
+
+ partition@ec0000 {
+ /* This location must not be altered */
+ /* 256KB for QE ucode firmware*/
+ reg = <0x03ec0000 0x00040000>;
+ label = "NOR QE microcode firmware";
+ read-only;
+ };
+
+ partition@f00000 {
+ /* This location must not be altered */
+ /* 512KB for u-boot Bootloader Image */
+ /* 512KB for u-boot Environment Variables */
+ reg = <0x03f00000 0x00100000>;
+ label = "NOR U-Boot Image";
+ read-only;
+ };
+ };
+
+ /* CS2 for Display */
+ display@2,0 {
+ compatible = "solomon,ssd1289fb";
+ reg = <0x2 0x0000 0x0004>;
+ };
+
+};
+
+&soc {
+ usb@22000 {
+ phy_type = "ulpi";
+ };
+
+ mdio@24000 {
+ phy0: ethernet-phy@2 {
+ interrupt-parent = <&mpic>;
+ interrupts = <1 1 0 0>;
+ reg = <0x2>;
+ };
+
+ phy1: ethernet-phy@1 {
+ interrupt-parent = <&mpic>;
+ interrupts = <2 1 0 0>;
+ reg = <0x1>;
+ };
+
+ tbi0: tbi-phy@11 {
+ reg = <0x11>;
+ device_type = "tbi-phy";
+ };
+ };
+
+ mdio@25000 {
+ tbi1: tbi-phy@11 {
+ reg = <0x11>;
+ device_type = "tbi-phy";
+ };
+ };
+
+ mdio@26000 {
+ tbi2: tbi-phy@11 {
+ reg = <0x11>;
+ device_type = "tbi-phy";
+ };
+ };
+
+ enet0: ethernet@b0000 {
+ phy-handle = <&phy0>;
+ phy-connection-type = "rgmii-id";
+
+ };
+
+ enet1: ethernet@b1000 {
+ status = "disabled";
+ };
+
+ enet2: ethernet@b2000 {
+ phy-handle = <&phy1>;
+ phy-connection-type = "rgmii-id";
+ };
+
+ par_io@e0100 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0xe0100 0x60>;
+ ranges = <0x0 0xe0100 0x60>;
+ device_type = "par_io";
+ num-ports = <3>;
+ pio1: ucc_pin@01 {
+ pio-map = <
+ /* port pin dir open_drain assignment has_irq */
+ 0x1 0x13 0x1 0x0 0x1 0x0 /* QE_MUX_MDC */
+ 0x1 0x14 0x3 0x0 0x1 0x0 /* QE_MUX_MDIO */
+ 0x0 0x17 0x2 0x0 0x2 0x0 /* CLK12 */
+ 0x0 0x18 0x2 0x0 0x1 0x0 /* CLK9 */
+ 0x0 0x7 0x1 0x0 0x2 0x0 /* ENET1_TXD0_SER1_TXD0 */
+ 0x0 0x9 0x1 0x0 0x2 0x0 /* ENET1_TXD1_SER1_TXD1 */
+ 0x0 0xb 0x1 0x0 0x2 0x0 /* ENET1_TXD2_SER1_TXD2 */
+ 0x0 0xc 0x1 0x0 0x2 0x0 /* ENET1_TXD3_SER1_TXD3 */
+ 0x0 0x6 0x2 0x0 0x2 0x0 /* ENET1_RXD0_SER1_RXD0 */
+ 0x0 0xa 0x2 0x0 0x2 0x0 /* ENET1_RXD1_SER1_RXD1 */
+ 0x0 0xe 0x2 0x0 0x2 0x0 /* ENET1_RXD2_SER1_RXD2 */
+ 0x0 0xf 0x2 0x0 0x2 0x0 /* ENET1_RXD3_SER1_RXD3 */
+ 0x0 0x5 0x1 0x0 0x2 0x0 /* ENET1_TX_EN_SER1_RTS_B */
+ 0x0 0xd 0x1 0x0 0x2 0x0 /* ENET1_TX_ER */
+ 0x0 0x4 0x2 0x0 0x2 0x0 /* ENET1_RX_DV_SER1_CTS_B */
+ 0x0 0x8 0x2 0x0 0x2 0x0 /* ENET1_RX_ER_SER1_CD_B */
+ 0x0 0x11 0x2 0x0 0x2 0x0 /* ENET1_CRS */
+ 0x0 0x10 0x2 0x0 0x2 0x0>; /* ENET1_COL */
+ };
+
+ pio2: ucc_pin@02 {
+ pio-map = <
+ /* port pin dir open_drain assignment has_irq */
+ 0x1 0x13 0x1 0x0 0x1 0x0 /* QE_MUX_MDC */
+ 0x1 0x14 0x3 0x0 0x1 0x0 /* QE_MUX_MDIO */
+ 0x1 0xb 0x2 0x0 0x1 0x0 /* CLK13 */
+ 0x1 0x7 0x1 0x0 0x2 0x0 /* ENET5_TXD0_SER5_TXD0 */
+ 0x1 0xa 0x1 0x0 0x2 0x0 /* ENET5_TXD1_SER5_TXD1 */
+ 0x1 0x6 0x2 0x0 0x2 0x0 /* ENET5_RXD0_SER5_RXD0 */
+ 0x1 0x9 0x2 0x0 0x2 0x0 /* ENET5_RXD1_SER5_RXD1 */
+ 0x1 0x5 0x1 0x0 0x2 0x0 /* ENET5_TX_EN_SER5_RTS_B */
+ 0x1 0x4 0x2 0x0 0x2 0x0 /* ENET5_RX_DV_SER5_CTS_B */
+ 0x1 0x8 0x2 0x0 0x2 0x0>; /* ENET5_RX_ER_SER5_CD_B */
+ };
+
+ pio3: ucc_pin@03 {
+ pio-map = <
+ /* port pin dir open_drain assignment has_irq */
+ 0x0 0x16 0x2 0x0 0x2 0x0 /* SER7_CD_B*/
+ 0x0 0x12 0x2 0x0 0x2 0x0 /* SER7_CTS_B*/
+ 0x0 0x13 0x1 0x0 0x2 0x0 /* SER7_RTS_B*/
+ 0x0 0x14 0x2 0x0 0x2 0x0 /* SER7_RXD0*/
+ 0x0 0x15 0x1 0x0 0x2 0x0>; /* SER7_TXD0*/
+ };
+
+ pio4: ucc_pin@04 {
+ pio-map = <
+ /* port pin dir open_drain assignment has_irq */
+ 0x1 0x0 0x2 0x0 0x2 0x0 /* SER3_CD_B*/
+ 0x0 0x1c 0x2 0x0 0x2 0x0 /* SER3_CTS_B*/
+ 0x0 0x1d 0x1 0x0 0x2 0x0 /* SER3_RTS_B*/
+ 0x0 0x1e 0x2 0x0 0x2 0x0 /* SER3_RXD0*/
+ 0x0 0x1f 0x1 0x0 0x2 0x0>; /* SER3_TXD0*/
+ };
+ };
+};
+
+&qe {
+ enet3: ucc@2000 {
+ device_type = "network";
+ compatible = "ucc_geth";
+ rx-clock-name = "clk12";
+ tx-clock-name = "clk9";
+ pio-handle = <&pio1>;
+ phy-handle = <&qe_phy0>;
+ phy-connection-type = "mii";
+ };
+
+ mdio@2120 {
+ qe_phy0: ethernet-phy@18 {
+ interrupt-parent = <&mpic>;
+ interrupts = <4 1 0 0>;
+ reg = <0x18>;
+ device_type = "ethernet-phy";
+ };
+ qe_phy1: ethernet-phy@19 {
+ interrupt-parent = <&mpic>;
+ interrupts = <5 1 0 0>;
+ reg = <0x19>;
+ device_type = "ethernet-phy";
+ };
+ tbi-phy@11 {
+ reg = <0x11>;
+ device_type = "tbi-phy";
+ };
+ };
+
+ enet4: ucc@2400 {
+ device_type = "network";
+ compatible = "ucc_geth";
+ rx-clock-name = "none";
+ tx-clock-name = "clk13";
+ pio-handle = <&pio2>;
+ phy-handle = <&qe_phy1>;
+ phy-connection-type = "rmii";
+ };
+
+ serial2: ucc@2600 {
+ device_type = "serial";
+ compatible = "ucc_uart";
+ port-number = <0>;
+ rx-clock-name = "brg6";
+ tx-clock-name = "brg6";
+ pio-handle = <&pio3>;
+ };
+
+ serial3: ucc@2200 {
+ device_type = "serial";
+ compatible = "ucc_uart";
+ port-number = <1>;
+ rx-clock-name = "brg2";
+ tx-clock-name = "brg2";
+ pio-handle = <&pio4>;
+ };
+};
diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index 4d46349..c17aae8 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -123,6 +123,12 @@ config P1023_RDS
help
This option enables support for the P1023 RDS and RDB boards
+config TWR_P102x
+ bool "Freescale TWR-P102x"
+ select DEFAULT_UIMAGE
+ help
+ This option enables support for the TWR-P1025 board.
+
config SOCRATES
bool "Socrates"
select DEFAULT_UIMAGE
diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index dd4c0b5..25cebe7 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -18,6 +18,7 @@ obj-$(CONFIG_P1010_RDB) += p1010rdb.o
obj-$(CONFIG_P1022_DS) += p1022_ds.o
obj-$(CONFIG_P1022_RDK) += p1022_rdk.o
obj-$(CONFIG_P1023_RDS) += p1023_rds.o
+obj-$(CONFIG_TWR_P102x) += twr_p102x.o
obj-$(CONFIG_CORENET_GENERIC) += corenet_generic.o
obj-$(CONFIG_STX_GP3) += stx_gp3.o
obj-$(CONFIG_TQM85xx) += tqm85xx.o
diff --git a/arch/powerpc/platforms/85xx/twr_p102x.c b/arch/powerpc/platforms/85xx/twr_p102x.c
new file mode 100644
index 0000000..4d264e3
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/twr_p102x.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2010-2011, 2013 Freescale Semiconductor, Inc.
+ *
+ * Author: Michael Johnston <michael.johnston@freescale.com>
+ *
+ * Description:
+ * TWR-P102x Board Setup
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/of_platform.h>
+
+#include <asm/pci-bridge.h>
+#include <asm/udbg.h>
+#include <asm/mpic.h>
+#include <asm/qe.h>
+#include <asm/qe_ic.h>
+#include <asm/fsl_guts.h>
+
+#include <sysdev/fsl_soc.h>
+#include <sysdev/fsl_pci.h>
+#include "smp.h"
+
+#include "mpc85xx.h"
+
+static void __init twr_p1025_pic_init(void)
+{
+ struct mpic *mpic;
+
+#ifdef CONFIG_QUICC_ENGINE
+ struct device_node *np;
+#endif
+
+ mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN |
+ MPIC_SINGLE_DEST_CPU,
+ 0, 256, " OpenPIC ");
+
+ BUG_ON(mpic == NULL);
+ mpic_init(mpic);
+
+#ifdef CONFIG_QUICC_ENGINE
+ np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
+ if (np) {
+ qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
+ qe_ic_cascade_high_mpic);
+ of_node_put(np);
+ } else
+ pr_err("Could not find qe-ic node\n");
+#endif
+}
+
+/* ************************************************************************
+ *
+ * Setup the architecture
+ *
+ */
+static void __init twr_p1025_setup_arch(void)
+{
+#ifdef CONFIG_QUICC_ENGINE
+ struct device_node *np;
+#endif
+
+ if (ppc_md.progress)
+ ppc_md.progress("twr_p1025_setup_arch()", 0);
+
+ mpc85xx_smp_init();
+
+ fsl_pci_assign_primary();
+
+#ifdef CONFIG_QUICC_ENGINE
+ mpc85xx_qe_init();
+
+#if defined(CONFIG_UCC_GETH) || defined(CONFIG_SERIAL_QE)
+ if (machine_is(twr_p1025)) {
+ struct ccsr_guts __iomem *guts;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,p1021-guts");
+ if (np) {
+ guts = of_iomap(np, 0);
+ if (!guts)
+ pr_err("twr_p1025: could not map global utilities register\n");
+ else {
+ /* P1025 has pins muxed for QE and other functions. To
+ * enable QE UEC mode, we need to set bit QE0 for UCC1
+ * in Eth mode, QE0 and QE3 for UCC5 in Eth mode, QE9
+ * and QE12 for QE MII management signals in PMUXCR
+ * register.
+ * Set QE mux bits in PMUXCR */
+ setbits32(&guts->pmuxcr, MPC85xx_PMUXCR_QE(0) |
+ MPC85xx_PMUXCR_QE(3) |
+ MPC85xx_PMUXCR_QE(9) |
+ MPC85xx_PMUXCR_QE(12));
+ iounmap(guts);
+
+#if defined(CONFIG_SERIAL_QE)
+ /* On P1025TWR board, the UCC7 acted as UART port.
+ * However, The UCC7's CTS pin is low level in default,
+ * it will impact the transmission in full duplex
+ * communication. So disable the Flow control pin PA18.
+ * The UCC7 UART just can use RXD and TXD pins.
+ */
+ par_io_config_pin(0, 18, 0, 0, 0, 0);
+#endif
+ /* Drive PB29 to CPLD low - CPLD will then change
+ * muxing from LBC to QE */
+ par_io_config_pin(1, 29, 1, 0, 0, 0);
+ par_io_data_set(1, 29, 0);
+ }
+ of_node_put(np);
+ }
+ }
+#endif
+#endif /* CONFIG_QUICC_ENGINE */
+
+ printk(KERN_INFO "TWR-P1025 board from Freescale Semiconductor\n");
+}
+
+machine_arch_initcall(twr_p1025, mpc85xx_common_publish_devices);
+
+static int __init twr_p1025_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ return of_flat_dt_is_compatible(root, "fsl,TWR-P1025");
+}
+
+define_machine(twr_p1025) {
+ .name = "TWR-P1025",
+ .probe = twr_p1025_probe,
+ .setup_arch = twr_p1025_setup_arch,
+ .init_IRQ = twr_p1025_pic_init,
+#ifdef CONFIG_PCI
+ .pcibios_fixup_bus = fsl_pcibios_fixup_bus,
+#endif
+ .get_irq = mpic_get_irq,
+ .restart = fsl_rstcr_restart,
+ .calibrate_decr = generic_calibrate_decr,
+ .progress = udbg_progress,
+};
--
1.8.4
^ permalink raw reply related
* [PATCH V6 1/2] powerpc/85xx: Add QE common init function
From: Xie Xiaobo @ 2013-11-06 9:08 UTC (permalink / raw)
To: linuxppc-dev, scottwood; +Cc: Xie Xiaobo
Define a QE init function in common file, and avoid
the same codes being duplicated in board files.
Signed-off-by: Xie Xiaobo <X.Xie@freescale.com>
---
V6 -> V5: add of_device_is_available check.
V5 -> V4: add the board files modification, remove the qe_pic_init.
V4 -> V3: Nochange
arch/powerpc/platforms/85xx/common.c | 38 +++++++++++++++++++++++++++++++
arch/powerpc/platforms/85xx/mpc85xx.h | 6 +++++
arch/powerpc/platforms/85xx/mpc85xx_mds.c | 29 ++---------------------
arch/powerpc/platforms/85xx/mpc85xx_rdb.c | 25 ++------------------
4 files changed, 48 insertions(+), 50 deletions(-)
diff --git a/arch/powerpc/platforms/85xx/common.c b/arch/powerpc/platforms/85xx/common.c
index d0861a0..970576b 100644
--- a/arch/powerpc/platforms/85xx/common.c
+++ b/arch/powerpc/platforms/85xx/common.c
@@ -7,6 +7,7 @@
*/
#include <linux/of_platform.h>
+#include <asm/qe.h>
#include <sysdev/cpm2_pic.h>
#include "mpc85xx.h"
@@ -80,3 +81,40 @@ void __init mpc85xx_cpm2_pic_init(void)
irq_set_chained_handler(irq, cpm2_cascade);
}
#endif
+
+#ifdef CONFIG_QUICC_ENGINE
+void __init mpc85xx_qe_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,qe");
+ if (!np) {
+ np = of_find_node_by_name(NULL, "qe");
+ if (!np) {
+ pr_err("%s: Could not find Quicc Engine node\n",
+ __func__);
+ return;
+ }
+ }
+
+ if (!of_device_is_available(np)) {
+ of_node_put(np);
+ return;
+ }
+
+ qe_reset();
+ of_node_put(np);
+
+ np = of_find_node_by_name(NULL, "par_io");
+ if (np) {
+ struct device_node *ucc;
+
+ par_io_init(np);
+ of_node_put(np);
+
+ for_each_node_by_name(ucc, "ucc")
+ par_io_of_config(ucc);
+
+ }
+}
+#endif
diff --git a/arch/powerpc/platforms/85xx/mpc85xx.h b/arch/powerpc/platforms/85xx/mpc85xx.h
index 2aa7c5d..fc51dd4 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx.h
+++ b/arch/powerpc/platforms/85xx/mpc85xx.h
@@ -8,4 +8,10 @@ extern void mpc85xx_cpm2_pic_init(void);
static inline void __init mpc85xx_cpm2_pic_init(void) {}
#endif /* CONFIG_CPM2 */
+#ifdef CONFIG_QUICC_ENGINE
+extern void mpc85xx_qe_init(void);
+#else
+static inline void __init mpc85xx_qe_init(void) {}
+#endif
+
#endif
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index a7b3621..34f3c5e 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2006-2010, 2012 Freescale Semiconductor, Inc.
+ * Copyright (C) 2006-2010, 2012-2013 Freescale Semiconductor, Inc.
* All rights reserved.
*
* Author: Andy Fleming <afleming@freescale.com>
@@ -238,32 +238,7 @@ static void __init mpc85xx_mds_qe_init(void)
{
struct device_node *np;
- np = of_find_compatible_node(NULL, NULL, "fsl,qe");
- if (!np) {
- np = of_find_node_by_name(NULL, "qe");
- if (!np)
- return;
- }
-
- if (!of_device_is_available(np)) {
- of_node_put(np);
- return;
- }
-
- qe_reset();
- of_node_put(np);
-
- np = of_find_node_by_name(NULL, "par_io");
- if (np) {
- struct device_node *ucc;
-
- par_io_init(np);
- of_node_put(np);
-
- for_each_node_by_name(ucc, "ucc")
- par_io_of_config(ucc);
- }
-
+ mpc85xx_qe_init();
mpc85xx_mds_reset_ucc_phys();
if (machine_is(p1021_mds)) {
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
index 53b6fb0..e15bdd1 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c
@@ -1,7 +1,7 @@
/*
* MPC85xx RDB Board Setup
*
- * Copyright 2009,2012 Freescale Semiconductor Inc.
+ * Copyright 2009,2012-2013 Freescale Semiconductor Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -98,26 +98,7 @@ static void __init mpc85xx_rdb_setup_arch(void)
fsl_pci_assign_primary();
#ifdef CONFIG_QUICC_ENGINE
- np = of_find_compatible_node(NULL, NULL, "fsl,qe");
- if (!np) {
- pr_err("%s: Could not find Quicc Engine node\n", __func__);
- goto qe_fail;
- }
-
- qe_reset();
- of_node_put(np);
-
- np = of_find_node_by_name(NULL, "par_io");
- if (np) {
- struct device_node *ucc;
-
- par_io_init(np);
- of_node_put(np);
-
- for_each_node_by_name(ucc, "ucc")
- par_io_of_config(ucc);
-
- }
+ mpc85xx_qe_init();
#if defined(CONFIG_UCC_GETH) || defined(CONFIG_SERIAL_QE)
if (machine_is(p1025_rdb)) {
@@ -148,8 +129,6 @@ static void __init mpc85xx_rdb_setup_arch(void)
}
#endif
-
-qe_fail:
#endif /* CONFIG_QUICC_ENGINE */
printk(KERN_INFO "MPC85xx RDB board from Freescale Semiconductor\n");
--
1.8.4
^ permalink raw reply related
* RE: [PATCHv2 1/8] ALSA: Add SAI SoC Digital Audio Interface driver.
From: Li Xiubo @ 2013-11-06 9:38 UTC (permalink / raw)
To: Shawn Guo
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang, Timur Tabi,
perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, Guangyu Chen,
linux-arm-kernel@lists.infradead.org, grant.likely@linaro.org,
devicetree@vger.kernel.org, ian.campbell@citrix.com,
pawel.moll@arm.com, swarren@wwwdotorg.org,
rob.herring@calxeda.com, broonie@kernel.org, oskar@scara.com,
Fabio Estevam, lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, linuxppc-dev@lists.ozlabs.org
In-Reply-To: <20131106081257.GR19770@S2101-09.ap.freescale.net>
> > > >> If there are any comments that say PPC but are not PPC-specific,
> that
> > > >> >should be fixed.
> > > > Yes, find it.
> > > >
> > > > The comments is in "sound/soc/fsl/Makefile" :
> > > > +++++++++++
> > > > "# Freescale PowerPC SSI/DMA Platform Support"
> > > > -----------
> > > >
> > > > But fsl-spdif.o is also under it.
> > > > And this is also support ARM and PowerPC platforms at the same
> time ?
> > > > If so, the comments should be modified to :
> > > > +++++++++++
> > > > "# Freescale PowerPC and ARM SSI/DMA Platform Support"
> > > > -----------
> > >
> > > Yes, this should be changed.
> > >
> >
> > How about :
> > +++++++++
> > "# Freescale PowerPC and ARM SSI/DMA/SAI/SPDIF Platform Support"
> > ---------
> > ?
>=20
> Or we can just drop 'PowerPC and ARM'?
>=20
Yes, this will be better.
Best Regards,
Xiubo
^ permalink raw reply
* RE: [PATCHv2 5/8] ASoC: SGTL5000: Enhance the SGTL5000 codec driver about regulator.
From: Li Xiubo @ 2013-11-06 8:59 UTC (permalink / raw)
To: Mark Brown
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang,
timur@tabi.org, perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, Guangyu Chen,
linux-arm-kernel@lists.infradead.org, grant.likely@linaro.org,
devicetree@vger.kernel.org, ian.campbell@citrix.com,
pawel.moll@arm.com, swarren@wwwdotorg.org,
rob.herring@calxeda.com, oskar@scara.com, Fabio Estevam,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, shawn.guo@linaro.org,
linuxppc-dev@lists.ozlabs.org
In-Reply-To: <20131101185045.GG2493@sirena.org.uk>
> > On VF610 series there are no regulators used, and now whether the
> > CONFIG_REGULATOR mirco is enabled or not, for the VF610 audio patch
> > series, the board cannot be probe successfully.
> > And this patch will solve this issue.
>=20
> I don't understand what this is for at all, you're just saying there is a
> problem you're trying to solve but you don't explain anything about what
> the problem is or how your changes address it.
>=20
Sorry for confusing.
The SGTL5000 is based on regulators and when it is disabled, there will be =
an error returns directly while the SGTL5000 codec is probing.
But on VF610 boards there has no regulators or needn't configure them, so t=
he CONFIG_REGULATOR is disabled, and then the error is returned causing
to the SGTL5000 probe broken.=20
Has I make it clear?
> > +#ifndef CONFIG_SND_SOC_FSL_SGTL5000_VF610
> > static int ldo_regulator_register(struct snd_soc_codec *codec,
>=20
> This is definitely broken, it won't work with multi-platform kernels, and
> I don't understand what this is supposed to do - what is the reason for
> making this change?
>
Yes, it is.
How about adding one node properties like : "regulator-exist", which will b=
e controlled by platform data ?
^ permalink raw reply
* Re: [PATCHv2 1/8] ALSA: Add SAI SoC Digital Audio Interface driver.
From: Shawn Guo @ 2013-11-06 8:12 UTC (permalink / raw)
To: Li Xiubo
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang, Timur Tabi,
perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, Guangyu Chen,
linux-arm-kernel@lists.infradead.org, grant.likely@linaro.org,
devicetree@vger.kernel.org, ian.campbell@citrix.com,
pawel.moll@arm.com, swarren@wwwdotorg.org,
rob.herring@calxeda.com, broonie@kernel.org, oskar@scara.com,
Fabio Estevam, lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, linuxppc-dev@lists.ozlabs.org
In-Reply-To: <1DD289F6464F0949A2FCA5AA6DC23F82876B08@039-SN2MPN1-013.039d.mgd.msft.net>
On Wed, Nov 06, 2013 at 03:53:24AM +0000, Li Xiubo wrote:
> > >> If there are any comments that say PPC but are not PPC-specific, that
> > >> >should be fixed.
> > > Yes, find it.
> > >
> > > The comments is in "sound/soc/fsl/Makefile" :
> > > +++++++++++
> > > "# Freescale PowerPC SSI/DMA Platform Support"
> > > -----------
> > >
> > > But fsl-spdif.o is also under it.
> > > And this is also support ARM and PowerPC platforms at the same time ?
> > > If so, the comments should be modified to :
> > > +++++++++++
> > > "# Freescale PowerPC and ARM SSI/DMA Platform Support"
> > > -----------
> >
> > Yes, this should be changed.
> >
>
> How about :
> +++++++++
> "# Freescale PowerPC and ARM SSI/DMA/SAI/SPDIF Platform Support"
> ---------
> ?
Or we can just drop 'PowerPC and ARM'?
Shawn
^ permalink raw reply
* RE: [PATCH v5 4/4] powerpc/85xx: add sysfs for pw20 state and altivec idle
From: Dongsheng Wang @ 2013-11-06 7:50 UTC (permalink / raw)
To: Bharat Bhushan, Scott Wood; +Cc: linuxppc-dev@lists.ozlabs.org
In-Reply-To: <6A3DF150A5B70D4F9B66A25E3F7C888D071E442A@039-SN2MPN1-013.039d.mgd.msft.net>
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^ permalink raw reply
* [RFC PATCH] ehci-platform: Merge ppc-of EHCI driver into the ehci-platform driver
From: Alistair Popple @ 2013-11-06 7:39 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: linuxppc-dev, linux-usb, Alan Stern
In-Reply-To: <1383710296.4776.119.camel@pasglop>
Currently the ppc-of driver uses the compatibility string
"usb-ehci". This means platforms that use device-tree and implement an
EHCI compatible interface have to either use the ppc-of driver or add
a compatible line to the ehci-platform driver. It would be more
appropriate for the platform driver to be compatible with "usb-ehci"
as non-powerpc platforms are also beginning to utilise device-tree.
This patch merges the device tree property parsing from ehci-ppc-of
into the platform driver and adds a "usb-ehci" compatibility
string. The existing ehci-ppc-of driver is renamed to ehci-440epx as
it contains platform specific work arounds for the 440EPX SoC.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
---
So I could submit something like this that essentially merges the ppc-of
driver into the platform driver instead of adding the "ibm,akebono-ehci"
compatible line to the platform driver.
However I'm still fairly new to device-tree so I'm not sure what (if any) the
broader impact would be. A quick grep for "usb-ehci" turned up a couple of ARM
device tree's using it however they all provided their own drivers and don't
select CONFIG_USB_EHCI_HCD_PLATFORM so I'm guess they shouldn't be impacted.
I have attempted to fix up any PowerPC device trees/configs, although I wasn't
sure if "usb-ehci" should remain in sequoia.dts or not given that it needs to
use the 440EPX specific driver.
Also this hasn't been tested (beyond compilation) yet.
arch/powerpc/boot/dts/sequoia.dts | 2 +-
arch/powerpc/configs/44x/canyonlands_defconfig | 1 +
drivers/usb/host/Kconfig | 8 +-
drivers/usb/host/ehci-440epx.c | 236
++++++++++++++++++++++++
drivers/usb/host/ehci-hcd.c | 6 +-
drivers/usb/host/ehci-platform.c | 18 +-
drivers/usb/host/ehci-ppc-of.c | 236
------------------------
7 files changed, 261 insertions(+), 246 deletions(-)
create mode 100644 drivers/usb/host/ehci-440epx.c
delete mode 100644 drivers/usb/host/ehci-ppc-of.c
diff --git a/arch/powerpc/boot/dts/sequoia.dts
b/arch/powerpc/boot/dts/sequoia.dts
index b1d3292..e28371e 100644
--- a/arch/powerpc/boot/dts/sequoia.dts
+++ b/arch/powerpc/boot/dts/sequoia.dts
@@ -153,7 +153,7 @@
};
USB0: ehci@e0000300 {
- compatible = "ibm,usb-ehci-440epx", "usb-ehci";
+ compatible = "ibm,usb-ehci-440epx";
interrupt-parent = <&UIC0>;
interrupts = <0x1a 0x4>;
reg = <0x00000000 0xe0000300 0x00000090 0x00000000
0xe0000390 0x00000070>;
diff --git a/arch/powerpc/configs/44x/canyonlands_defconfig
b/arch/powerpc/configs/44x/canyonlands_defconfig
index d5be93e..16dc37f 100644
--- a/arch/powerpc/configs/44x/canyonlands_defconfig
+++ b/arch/powerpc/configs/44x/canyonlands_defconfig
@@ -75,6 +75,7 @@ CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_DEVICEFS=y
CONFIG_USB_MON=y
CONFIG_USB_EHCI_HCD=m
+CONFIG_USB_EHCI_HCD_PLATFORM=m
CONFIG_USB_OHCI_HCD=y
CONFIG_USB_OHCI_HCD_PPC_OF_BE=y
CONFIG_USB_OHCI_HCD_PPC_OF_LE=y
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index b3f20d7..b8d7c24 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -188,13 +188,13 @@ config USB_EHCI_TEGRA
This driver enables support for the internal USB Host Controllers
found in NVIDIA Tegra SoCs. The controllers are EHCI compliant.
-config USB_EHCI_HCD_PPC_OF
- bool "EHCI support for PPC USB controller on OF platform bus"
- depends on PPC_OF
+config USB_EHCI_HCD_440EPX
+ bool "EHCI support for PPC USB controller on 440EPX"
+ depends on PPC_OF && 440EPX
default y
---help---
Enables support for the USB controller present on the PowerPC
- OpenFirmware platform bus.
+ 440EPX SoC.
config USB_EHCI_SH
bool "EHCI support for SuperH USB controller"
diff --git a/drivers/usb/host/ehci-440epx.c b/drivers/usb/host/ehci-440epx.c
new file mode 100644
index 0000000..4223700
--- /dev/null
+++ b/drivers/usb/host/ehci-440epx.c
@@ -0,0 +1,236 @@
+/*
+ * EHCI HCD (Host Controller Driver) for USB.
+ *
+ * Bus Glue for PPC On-Chip EHCI driver on the of_platform bus
+ * Tested on AMCC PPC 440EPx
+ *
+ * Valentine Barshak <vbarshak@ru.mvista.com>
+ *
+ * Based on "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de>
+ * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/err.h>
+#include <linux/signal.h>
+
+#include <linux/of.h>
+#include <linux/of_platform.h>
+
+
+static const struct hc_driver ehci_440epx_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "OF EHCI",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ehci_irq,
+ .flags = HCD_MEMORY | HCD_USB2,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ehci_setup,
+ .start = ehci_run,
+ .stop = ehci_stop,
+ .shutdown = ehci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+ .endpoint_reset = ehci_endpoint_reset,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ehci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+#endif
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+
+/*
+ * 440EPx Errata USBH_3
+ * Fix: Enable Break Memory Transfer (BMT) in INSNREG3
+ */
+#define PPC440EPX_EHCI0_INSREG_BMT (0x1 << 0)
+static int
+ppc44x_enable_bmt(struct device_node *dn)
+{
+ __iomem u32 *insreg_virt;
+
+ insreg_virt = of_iomap(dn, 1);
+ if (!insreg_virt)
+ return -EINVAL;
+
+ out_be32(insreg_virt + 3, PPC440EPX_EHCI0_INSREG_BMT);
+
+ iounmap(insreg_virt);
+ return 0;
+}
+
+
+static int ehci_hcd_440epx_probe(struct platform_device *op)
+{
+ struct device_node *dn = op->dev.of_node;
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci = NULL;
+ struct resource res;
+ int irq;
+ int rv;
+
+ struct device_node *np;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ dev_dbg(&op->dev, "initializing PPC-OF USB Controller\n");
+
+ rv = of_address_to_resource(dn, 0, &res);
+ if (rv)
+ return rv;
+
+ hcd = usb_create_hcd(&ehci_440epx_hc_driver, &op->dev, "PPC-OF USB");
+ if (!hcd)
+ return -ENOMEM;
+
+ hcd->rsrc_start = res.start;
+ hcd->rsrc_len = resource_size(&res);
+
+ irq = irq_of_parse_and_map(dn, 0);
+ if (irq == NO_IRQ) {
+ printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
+ rv = -EBUSY;
+ goto err_irq;
+ }
+
+ hcd->regs = devm_ioremap_resource(&op->dev, &res);
+ if (IS_ERR(hcd->regs)) {
+ rv = PTR_ERR(hcd->regs);
+ goto err_ioremap;
+ }
+
+ ehci = hcd_to_ehci(hcd);
+ np = of_find_compatible_node(NULL, NULL, "ibm,usb-ohci-440epx");
+ if (np != NULL) {
+ /* claim we really affected by usb23 erratum */
+ if (!of_address_to_resource(np, 0, &res))
+ ehci->ohci_hcctrl_reg =
+ devm_ioremap(&op->dev,
+ res.start + OHCI_HCCTRL_OFFSET,
+ OHCI_HCCTRL_LEN);
+ else
+ pr_debug("%s: no ohci offset in fdt\n", __FILE__);
+ if (!ehci->ohci_hcctrl_reg) {
+ pr_debug("%s: ioremap for ohci hcctrl failed\n", __FILE__);
+ } else {
+ ehci->has_amcc_usb23 = 1;
+ }
+ }
+
+ if (of_get_property(dn, "big-endian", NULL)) {
+ ehci->big_endian_mmio = 1;
+ ehci->big_endian_desc = 1;
+ }
+ if (of_get_property(dn, "big-endian-regs", NULL))
+ ehci->big_endian_mmio = 1;
+ if (of_get_property(dn, "big-endian-desc", NULL))
+ ehci->big_endian_desc = 1;
+
+ ehci->caps = hcd->regs;
+
+ if (of_device_is_compatible(dn, "ibm,usb-ehci-440epx")) {
+ rv = ppc44x_enable_bmt(dn);
+ ehci_dbg(ehci, "Break Memory Transfer (BMT) is %senabled!\n",
+ rv ? "NOT ": "");
+ }
+
+ rv = usb_add_hcd(hcd, irq, 0);
+ if (rv)
+ goto err_ioremap;
+
+ return 0;
+
+err_ioremap:
+ irq_dispose_mapping(irq);
+err_irq:
+ usb_put_hcd(hcd);
+
+ return rv;
+}
+
+
+static int ehci_hcd_440epx_remove(struct platform_device *op)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(op);
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+ struct device_node *np;
+ struct resource res;
+
+ dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n");
+
+ usb_remove_hcd(hcd);
+
+ irq_dispose_mapping(hcd->irq);
+
+ /* use request_mem_region to test if the ohci driver is loaded. if so
+ * ensure the ohci core is operational.
+ */
+ if (ehci->has_amcc_usb23) {
+ np = of_find_compatible_node(NULL, NULL, "ibm,usb-ohci-440epx");
+ if (np != NULL) {
+ if (!of_address_to_resource(np, 0, &res))
+ if (!request_mem_region(res.start,
+ 0x4, hcd_name))
+ set_ohci_hcfs(ehci, 1);
+ else
+ release_mem_region(res.start, 0x4);
+ else
+ pr_debug("%s: no ohci offset in fdt\n", __FILE__);
+ of_node_put(np);
+ }
+ }
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+
+static const struct of_device_id ehci_hcd_440epx_match[] = {
+ {
+ .compatible = "ibm,usb-ehci-440epx",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ehci_hcd_440epx_match);
+
+
+static struct platform_driver ehci_hcd_440epx_driver = {
+ .probe = ehci_hcd_440epx_probe,
+ .remove = ehci_hcd_440epx_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "ppc-of-ehci",
+ .owner = THIS_MODULE,
+ .of_match_table = ehci_hcd_440epx_match,
+ },
+};
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 86ab9fd..3b04f25 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1228,9 +1228,9 @@ MODULE_LICENSE ("GPL");
#define PS3_SYSTEM_BUS_DRIVER ps3_ehci_driver
#endif
-#ifdef CONFIG_USB_EHCI_HCD_PPC_OF
-#include "ehci-ppc-of.c"
-#define OF_PLATFORM_DRIVER ehci_hcd_ppc_of_driver
+#ifdef CONFIG_USB_EHCI_HCD_440EPX
+#include "ehci-440epx.c"
+#define OF_PLATFORM_DRIVER ehci_hcd_440epx_driver
#endif
#ifdef CONFIG_XPS_USB_HCD_XILINX
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-
platform.c
index f6b790c..027f368 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -77,6 +77,7 @@ static int ehci_platform_probe(struct platform_device *dev)
struct usb_hcd *hcd;
struct resource *res_mem;
struct usb_ehci_pdata *pdata;
+ struct device_node *dn = dev->dev.of_node;
int irq;
int err = -ENOMEM;
@@ -96,6 +97,18 @@ static int ehci_platform_probe(struct platform_device *dev)
pdata = dev_get_platdata(&dev->dev);
+ /* Initialise platform data from device tree if available. */
+ if (!dn) {
+ if (of_get_property(dn, "big-endian", NULL)) {
+ pdata->big_endian_mmio = 1;
+ pdata->big_endian_desc = 1;
+ }
+ if (of_get_property(dn, "big-endian-regs", NULL))
+ pdata->big_endian_mmio = 1;
+ if (of_get_property(dn, "big-endian-desc", NULL))
+ pdata->big_endian_desc = 1;
+ }
+
irq = platform_get_irq(dev, 0);
if (irq < 0) {
dev_err(&dev->dev, "no irq provided");
@@ -203,9 +216,10 @@ static int ehci_platform_resume(struct device *dev)
#define ehci_platform_resume NULL
#endif /* CONFIG_PM */
-static const struct of_device_id vt8500_ehci_ids[] = {
+static const struct of_device_id ehci_platform_ids[] = {
{ .compatible = "via,vt8500-ehci", },
{ .compatible = "wm,prizm-ehci", },
+ { .compatible = "usb-ehci", },
{}
};
@@ -229,7 +243,7 @@ static struct platform_driver ehci_platform_driver = {
.owner = THIS_MODULE,
.name = "ehci-platform",
.pm = &ehci_platform_pm_ops,
- .of_match_table = vt8500_ehci_ids,
+ .of_match_table = ehci_platform_ids,
}
};
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
deleted file mode 100644
index 932293f..0000000
--- a/drivers/usb/host/ehci-ppc-of.c
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- * EHCI HCD (Host Controller Driver) for USB.
- *
- * Bus Glue for PPC On-Chip EHCI driver on the of_platform bus
- * Tested on AMCC PPC 440EPx
- *
- * Valentine Barshak <vbarshak@ru.mvista.com>
- *
- * Based on "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de>
- * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com>
- *
- * This file is licenced under the GPL.
- */
-
-#include <linux/err.h>
-#include <linux/signal.h>
-
-#include <linux/of.h>
-#include <linux/of_platform.h>
-
-
-static const struct hc_driver ehci_ppc_of_hc_driver = {
- .description = hcd_name,
- .product_desc = "OF EHCI",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /*
- * basic lifecycle operations
- */
- .reset = ehci_setup,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
-
- /*
- * scheduling support
- */
- .get_frame_number = ehci_get_frame,
-
- /*
- * root hub support
- */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
-#ifdef CONFIG_PM
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
-#endif
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
-
-/*
- * 440EPx Errata USBH_3
- * Fix: Enable Break Memory Transfer (BMT) in INSNREG3
- */
-#define PPC440EPX_EHCI0_INSREG_BMT (0x1 << 0)
-static int
-ppc44x_enable_bmt(struct device_node *dn)
-{
- __iomem u32 *insreg_virt;
-
- insreg_virt = of_iomap(dn, 1);
- if (!insreg_virt)
- return -EINVAL;
-
- out_be32(insreg_virt + 3, PPC440EPX_EHCI0_INSREG_BMT);
-
- iounmap(insreg_virt);
- return 0;
-}
-
-
-static int ehci_hcd_ppc_of_probe(struct platform_device *op)
-{
- struct device_node *dn = op->dev.of_node;
- struct usb_hcd *hcd;
- struct ehci_hcd *ehci = NULL;
- struct resource res;
- int irq;
- int rv;
-
- struct device_node *np;
-
- if (usb_disabled())
- return -ENODEV;
-
- dev_dbg(&op->dev, "initializing PPC-OF USB Controller\n");
-
- rv = of_address_to_resource(dn, 0, &res);
- if (rv)
- return rv;
-
- hcd = usb_create_hcd(&ehci_ppc_of_hc_driver, &op->dev, "PPC-OF USB");
- if (!hcd)
- return -ENOMEM;
-
- hcd->rsrc_start = res.start;
- hcd->rsrc_len = resource_size(&res);
-
- irq = irq_of_parse_and_map(dn, 0);
- if (irq == NO_IRQ) {
- printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
- rv = -EBUSY;
- goto err_irq;
- }
-
- hcd->regs = devm_ioremap_resource(&op->dev, &res);
- if (IS_ERR(hcd->regs)) {
- rv = PTR_ERR(hcd->regs);
- goto err_ioremap;
- }
-
- ehci = hcd_to_ehci(hcd);
- np = of_find_compatible_node(NULL, NULL, "ibm,usb-ohci-440epx");
- if (np != NULL) {
- /* claim we really affected by usb23 erratum */
- if (!of_address_to_resource(np, 0, &res))
- ehci->ohci_hcctrl_reg =
- devm_ioremap(&op->dev,
- res.start + OHCI_HCCTRL_OFFSET,
- OHCI_HCCTRL_LEN);
- else
- pr_debug("%s: no ohci offset in fdt\n", __FILE__);
- if (!ehci->ohci_hcctrl_reg) {
- pr_debug("%s: ioremap for ohci hcctrl failed\n", __FILE__);
- } else {
- ehci->has_amcc_usb23 = 1;
- }
- }
-
- if (of_get_property(dn, "big-endian", NULL)) {
- ehci->big_endian_mmio = 1;
- ehci->big_endian_desc = 1;
- }
- if (of_get_property(dn, "big-endian-regs", NULL))
- ehci->big_endian_mmio = 1;
- if (of_get_property(dn, "big-endian-desc", NULL))
- ehci->big_endian_desc = 1;
-
- ehci->caps = hcd->regs;
-
- if (of_device_is_compatible(dn, "ibm,usb-ehci-440epx")) {
- rv = ppc44x_enable_bmt(dn);
- ehci_dbg(ehci, "Break Memory Transfer (BMT) is %senabled!\n",
- rv ? "NOT ": "");
- }
-
- rv = usb_add_hcd(hcd, irq, 0);
- if (rv)
- goto err_ioremap;
-
- return 0;
-
-err_ioremap:
- irq_dispose_mapping(irq);
-err_irq:
- usb_put_hcd(hcd);
-
- return rv;
-}
-
-
-static int ehci_hcd_ppc_of_remove(struct platform_device *op)
-{
- struct usb_hcd *hcd = platform_get_drvdata(op);
- struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-
- struct device_node *np;
- struct resource res;
-
- dev_dbg(&op->dev, "stopping PPC-OF USB Controller\n");
-
- usb_remove_hcd(hcd);
-
- irq_dispose_mapping(hcd->irq);
-
- /* use request_mem_region to test if the ohci driver is loaded. if so
- * ensure the ohci core is operational.
- */
- if (ehci->has_amcc_usb23) {
- np = of_find_compatible_node(NULL, NULL, "ibm,usb-ohci-440epx");
- if (np != NULL) {
- if (!of_address_to_resource(np, 0, &res))
- if (!request_mem_region(res.start,
- 0x4, hcd_name))
- set_ohci_hcfs(ehci, 1);
- else
- release_mem_region(res.start, 0x4);
- else
- pr_debug("%s: no ohci offset in fdt\n", __FILE__);
- of_node_put(np);
- }
- }
- usb_put_hcd(hcd);
-
- return 0;
-}
-
-
-static const struct of_device_id ehci_hcd_ppc_of_match[] = {
- {
- .compatible = "usb-ehci",
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, ehci_hcd_ppc_of_match);
-
-
-static struct platform_driver ehci_hcd_ppc_of_driver = {
- .probe = ehci_hcd_ppc_of_probe,
- .remove = ehci_hcd_ppc_of_remove,
- .shutdown = usb_hcd_platform_shutdown,
- .driver = {
- .name = "ppc-of-ehci",
- .owner = THIS_MODULE,
- .of_match_table = ehci_hcd_ppc_of_match,
- },
-};
--
1.7.10.4
^ permalink raw reply related
* Re: [PATCH 1/3] powerpc/kvm: simplify the entering logic for secondary thread
From: Liu ping fan @ 2013-11-06 7:26 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc-dev, Alexander Graf, kvm-ppc
In-Reply-To: <20131106050100.GC14842@drongo>
On Wed, Nov 6, 2013 at 1:01 PM, Paul Mackerras <paulus@samba.org> wrote:
> On Tue, Nov 05, 2013 at 03:42:42PM +0800, Liu Ping Fan wrote:
>> After the primary vcpu changes vcore_state to VCORE_RUNNING, there is
>> very little chance to schedule to secondary vcpu. So if we change the
>
> Why do you say there is very little chance to run the secondary vcpu?
>
>> code sequence around set vcore_state to VCORE_RUNNING and disable
>> preemption, we lost little. But we simplify the entering logi, based on
>> the fact that if primary vcpu runs, the secondary vcpu can not be scheduled.
>
> If a vcpu does a hypercall or something else that requires the host
> (kernel or userspace) to do something, that can happen in the context
> of the vcpu task for that vcpu. That vcpu task can run on another
> core (unless it has been pinned). When it is finished we would like
> the vcpu to continue executing in the guest as soon as possible. The
> code that you remove in this patch enables that to happen without
> having to wait until the other threads exit the guest. So I don't
> think it is a good idea to remove this code.
>
Yes, you are right.
Thanks and regards,
Pingfan
> Regards,
> Paul.
^ permalink raw reply
* Re: [PATCH] powerpc: memcpy optimization for 64bit LE
From: Michael Neuling @ 2013-11-06 6:22 UTC (permalink / raw)
To: Philippe Bergheaud; +Cc: Linuxppc-dev
In-Reply-To: <1383640732-21449-1-git-send-email-felix@linux.vnet.ibm.com>
Philippe Bergheaud <felix@linux.vnet.ibm.com> wrote:
> Unaligned stores take alignment exceptions on POWER7 running in little-endian.
> This is a dumb little-endian base memcpy that prevents unaligned stores.
> It is replaced by the VMX memcpy at boot.
Is this any faster than the generic version?
Mikey
>
> Signed-off-by: Philippe Bergheaud <felix@linux.vnet.ibm.com>
> ---
> arch/powerpc/include/asm/string.h | 4 ----
> arch/powerpc/kernel/ppc_ksyms.c | 2 --
> arch/powerpc/lib/Makefile | 2 --
> arch/powerpc/lib/memcpy_64.S | 19 +++++++++++++++++++
> 4 files changed, 19 insertions(+), 8 deletions(-)
>
> diff --git a/arch/powerpc/include/asm/string.h b/arch/powerpc/include/asm/string.h
> index 0dffad6..e40010a 100644
> --- a/arch/powerpc/include/asm/string.h
> +++ b/arch/powerpc/include/asm/string.h
> @@ -10,9 +10,7 @@
> #define __HAVE_ARCH_STRNCMP
> #define __HAVE_ARCH_STRCAT
> #define __HAVE_ARCH_MEMSET
> -#ifdef __BIG_ENDIAN__
> #define __HAVE_ARCH_MEMCPY
> -#endif
> #define __HAVE_ARCH_MEMMOVE
> #define __HAVE_ARCH_MEMCMP
> #define __HAVE_ARCH_MEMCHR
> @@ -24,9 +22,7 @@ extern int strcmp(const char *,const char *);
> extern int strncmp(const char *, const char *, __kernel_size_t);
> extern char * strcat(char *, const char *);
> extern void * memset(void *,int,__kernel_size_t);
> -#ifdef __BIG_ENDIAN__
> extern void * memcpy(void *,const void *,__kernel_size_t);
> -#endif
> extern void * memmove(void *,const void *,__kernel_size_t);
> extern int memcmp(const void *,const void *,__kernel_size_t);
> extern void * memchr(const void *,int,__kernel_size_t);
> diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
> index 526ad5c..0c2dd60 100644
> --- a/arch/powerpc/kernel/ppc_ksyms.c
> +++ b/arch/powerpc/kernel/ppc_ksyms.c
> @@ -147,9 +147,7 @@ EXPORT_SYMBOL(__ucmpdi2);
> #endif
> long long __bswapdi2(long long);
> EXPORT_SYMBOL(__bswapdi2);
> -#ifdef __BIG_ENDIAN__
> EXPORT_SYMBOL(memcpy);
> -#endif
> EXPORT_SYMBOL(memset);
> EXPORT_SYMBOL(memmove);
> EXPORT_SYMBOL(memcmp);
> diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile
> index 5310132..6670361 100644
> --- a/arch/powerpc/lib/Makefile
> +++ b/arch/powerpc/lib/Makefile
> @@ -23,9 +23,7 @@ obj-y += checksum_$(CONFIG_WORD_SIZE).o
> obj-$(CONFIG_PPC64) += checksum_wrappers_64.o
> endif
>
> -ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),)
> obj-$(CONFIG_PPC64) += memcpy_power7.o memcpy_64.o
> -endif
>
> obj-$(CONFIG_PPC_EMULATE_SSTEP) += sstep.o ldstfp.o
>
> diff --git a/arch/powerpc/lib/memcpy_64.S b/arch/powerpc/lib/memcpy_64.S
> index d2bbbc8..358cf74 100644
> --- a/arch/powerpc/lib/memcpy_64.S
> +++ b/arch/powerpc/lib/memcpy_64.S
> @@ -12,10 +12,28 @@
> .align 7
> _GLOBAL(memcpy)
> BEGIN_FTR_SECTION
> +#ifdef __LITTLE_ENDIAN__
> + cmpdi cr7,r5,0 /* dumb little-endian memcpy */
> +#else
> std r3,48(r1) /* save destination pointer for return value */
> +#endif
> FTR_SECTION_ELSE
> b memcpy_power7
> ALT_FTR_SECTION_END_IFCLR(CPU_FTR_VMX_COPY)
> +#ifdef __LITTLE_ENDIAN__
> + addi r5,r5,-1
> + addi r9,r3,-1
> + add r5,r3,r5
> + subf r5,r9,r5
> + addi r4,r4,-1
> + mtctr r5
> + beqlr cr7
> +1:
> + lbzu r10,1(r4)
> + stbu r10,1(r9)
> + bdnz 1b
> + blr
> +#else
> PPC_MTOCRF(0x01,r5)
> cmpldi cr1,r5,16
> neg r6,r3 # LS 3 bits = # bytes to 8-byte dest bdry
> @@ -201,3 +219,4 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD)
> stb r0,0(r3)
> 4: ld r3,48(r1) /* return dest pointer */
> blr
> +#endif
> --
> 1.7.10.4
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev
>
^ permalink raw reply
* Re: [PATCH 2/3] powerpc/kvm: fix rare but potential deadlock scene
From: Liu ping fan @ 2013-11-06 6:02 UTC (permalink / raw)
To: Paul Mackerras; +Cc: linuxppc-dev, Alexander Graf, kvm-ppc
In-Reply-To: <20131106050418.GD14842@drongo>
On Wed, Nov 6, 2013 at 1:04 PM, Paul Mackerras <paulus@samba.org> wrote:
> On Tue, Nov 05, 2013 at 03:42:43PM +0800, Liu Ping Fan wrote:
>> Since kvmppc_hv_find_lock_hpte() is called from both virtmode and
>> realmode, so it can trigger the deadlock.
>
> Good catch, we should have preemption disabled while ever we have a
> HPTE locked.
>
>> @@ -474,8 +474,10 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
>> }
>>
>> /* Find the HPTE in the hash table */
>> + preempt_disable();
>> index = kvmppc_hv_find_lock_hpte(kvm, eaddr, slb_v,
>> HPTE_V_VALID | HPTE_V_ABSENT);
>> + preempt_enable();
>
> Which means we need to add the preempt_enable after unlocking the
> HPTE, not here.
>
Yes. Sorry, but I am not sure about whether we can call
preempt_disable/enable() in realmode. I think since thread_info is
allocated with linear address, so we can use preempt_disable/enable()
inside kvmppc_hv_find_lock_hpte(), right?
Thanks and regards,
Pingfan
> Regards,
> Paul.
^ permalink raw reply
* RE: [PATCH v5 4/4] powerpc/85xx: add sysfs for pw20 state and altivec idle
From: Bharat Bhushan @ 2013-11-06 5:25 UTC (permalink / raw)
To: Dongsheng Wang, Scott Wood; +Cc: linuxppc-dev@lists.ozlabs.org
In-Reply-To: <ABB05CD9C9F68C46A5CEDC7F15439259010BC83B@039-SN2MPN1-021.039d.mgd.msft.net>
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^ permalink raw reply
* Re: [PATCH 3/3] powerpc/kvm: remove redundant assignment
From: Paul Mackerras @ 2013-11-06 5:04 UTC (permalink / raw)
To: Liu Ping Fan; +Cc: linuxppc-dev, Alexander Graf, kvm-ppc
In-Reply-To: <1383637364-14691-3-git-send-email-pingfank@linux.vnet.ibm.com>
On Tue, Nov 05, 2013 at 03:42:44PM +0800, Liu Ping Fan wrote:
> Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
> ---
> arch/powerpc/kvm/book3s_64_mmu_hv.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
> index 28160ac..7682837 100644
> --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
> +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
> @@ -731,7 +731,6 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
> lock_rmap(rmap);
>
> /* Check if we might have been invalidated; let the guest retry if so */
> - ret = RESUME_GUEST;
> if (mmu_notifier_retry(vcpu->kvm, mmu_seq)) {
> unlock_rmap(rmap);
> goto out_unlock;
Acked-by: Paul Mackerras <paulus@samba.org>
^ permalink raw reply
* Re: [PATCH 2/3] powerpc/kvm: fix rare but potential deadlock scene
From: Paul Mackerras @ 2013-11-06 5:04 UTC (permalink / raw)
To: Liu Ping Fan; +Cc: linuxppc-dev, Alexander Graf, kvm-ppc
In-Reply-To: <1383637364-14691-2-git-send-email-pingfank@linux.vnet.ibm.com>
On Tue, Nov 05, 2013 at 03:42:43PM +0800, Liu Ping Fan wrote:
> Since kvmppc_hv_find_lock_hpte() is called from both virtmode and
> realmode, so it can trigger the deadlock.
Good catch, we should have preemption disabled while ever we have a
HPTE locked.
> @@ -474,8 +474,10 @@ static int kvmppc_mmu_book3s_64_hv_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
> }
>
> /* Find the HPTE in the hash table */
> + preempt_disable();
> index = kvmppc_hv_find_lock_hpte(kvm, eaddr, slb_v,
> HPTE_V_VALID | HPTE_V_ABSENT);
> + preempt_enable();
Which means we need to add the preempt_enable after unlocking the
HPTE, not here.
Regards,
Paul.
^ permalink raw reply
* Re: [PATCH 1/3] powerpc/kvm: simplify the entering logic for secondary thread
From: Paul Mackerras @ 2013-11-06 5:01 UTC (permalink / raw)
To: Liu Ping Fan; +Cc: linuxppc-dev, Alexander Graf, kvm-ppc
In-Reply-To: <1383637364-14691-1-git-send-email-pingfank@linux.vnet.ibm.com>
On Tue, Nov 05, 2013 at 03:42:42PM +0800, Liu Ping Fan wrote:
> After the primary vcpu changes vcore_state to VCORE_RUNNING, there is
> very little chance to schedule to secondary vcpu. So if we change the
Why do you say there is very little chance to run the secondary vcpu?
> code sequence around set vcore_state to VCORE_RUNNING and disable
> preemption, we lost little. But we simplify the entering logi, based on
> the fact that if primary vcpu runs, the secondary vcpu can not be scheduled.
If a vcpu does a hypercall or something else that requires the host
(kernel or userspace) to do something, that can happen in the context
of the vcpu task for that vcpu. That vcpu task can run on another
core (unless it has been pinned). When it is finished we would like
the vcpu to continue executing in the guest as soon as possible. The
code that you remove in this patch enables that to happen without
having to wait until the other threads exit the guest. So I don't
think it is a good idea to remove this code.
Regards,
Paul.
^ permalink raw reply
* Re: [PATCH 5/7] IBM Akebono: Add support to the EHCI platform driver for Akebono
From: Benjamin Herrenschmidt @ 2013-11-06 3:58 UTC (permalink / raw)
To: Alistair Popple; +Cc: linuxppc-dev, linux-usb, Alan Stern
In-Reply-To: <2440701.siW6M1PPWz@mexican>
On Wed, 2013-11-06 at 14:50 +1100, Alistair Popple wrote:
> Actually a grep of "usb-ehci" turns up the ehci-ppc-of driver which I somehow
> missed. This driver works and uses .compatible = "usb-ehci" so I can use that
> instead if that is preferable?
>
> However it is basically the same as the ehci-platform driver so I guess at
> some point the two should be merged...
I think the split predates the grand unification of "of" driver and platform,
so yes they should.
Cheers,
Ben.
^ permalink raw reply
* RE: [PATCHv2 1/8] ALSA: Add SAI SoC Digital Audio Interface driver.
From: Li Xiubo @ 2013-11-06 3:53 UTC (permalink / raw)
To: Timur Tabi, Guangyu Chen
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang,
perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org,
grant.likely@linaro.org, devicetree@vger.kernel.org,
ian.campbell@citrix.com, pawel.moll@arm.com,
swarren@wwwdotorg.org, rob.herring@calxeda.com,
broonie@kernel.org, oskar@scara.com, Fabio Estevam,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, shawn.guo@linaro.org,
linuxppc-dev@lists.ozlabs.org
In-Reply-To: <5279B822.9010401@tabi.org>
> >> If there are any comments that say PPC but are not PPC-specific, that
> >> >should be fixed.
> > Yes, find it.
> >
> > The comments is in "sound/soc/fsl/Makefile" :
> > +++++++++++
> > "# Freescale PowerPC SSI/DMA Platform Support"
> > -----------
> >
> > But fsl-spdif.o is also under it.
> > And this is also support ARM and PowerPC platforms at the same time ?
> > If so, the comments should be modified to :
> > +++++++++++
> > "# Freescale PowerPC and ARM SSI/DMA Platform Support"
> > -----------
>=20
> Yes, this should be changed.
>=20
How about :
+++++++++
"# Freescale PowerPC and ARM SSI/DMA/SAI/SPDIF Platform Support"=09
---------
?
^ permalink raw reply
* Re: [PATCH 5/7] IBM Akebono: Add support to the EHCI platform driver for Akebono
From: Alistair Popple @ 2013-11-06 3:50 UTC (permalink / raw)
To: Benjamin Herrenschmidt; +Cc: linuxppc-dev, linux-usb, Alan Stern
In-Reply-To: <1383681133.4776.95.camel@pasglop>
On Wed, 6 Nov 2013 06:52:13 Benjamin Herrenschmidt wrote:
[snip]
>
> Why ? Do we need to add an entry for every platform in there ? Besides,
> it probably should be the SoC name not the platform here....
>
> Why not simply a generic compatible "usb-ehci" ? It's a standard
> programming interface, there are no specific quirks, we shouldn't
> need to have to add new entries to the driver like that for every
> new SoC/platform.
>
Actually a grep of "usb-ehci" turns up the ehci-ppc-of driver which I somehow
missed. This driver works and uses .compatible = "usb-ehci" so I can use that
instead if that is preferable?
However it is basically the same as the ehci-platform driver so I guess at
some point the two should be merged...
> > > @@ -229,7 +230,7 @@ static struct platform_driver ehci_platform_driver =
> > > {
> > >
> > > .owner = THIS_MODULE,
> > > .name = "ehci-platform",
> > > .pm = &ehci_platform_pm_ops,
> > >
> > > - .of_match_table = vt8500_ehci_ids,
> > > + .of_match_table = ehci_platform_ids,
> > >
> > > }
> > >
> > > };
> >
> > Acked-by: Alan Stern <stern@rowland.harvard.edu>
> >
> > _______________________________________________
> > Linuxppc-dev mailing list
> > Linuxppc-dev@lists.ozlabs.org
> > https://lists.ozlabs.org/listinfo/linuxppc-dev
^ permalink raw reply
* Re: [PATCHv2 1/8] ALSA: Add SAI SoC Digital Audio Interface driver.
From: Timur Tabi @ 2013-11-06 3:31 UTC (permalink / raw)
To: Li Xiubo, Guangyu Chen
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang,
perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org,
grant.likely@linaro.org, devicetree@vger.kernel.org,
ian.campbell@citrix.com, pawel.moll@arm.com,
swarren@wwwdotorg.org, rob.herring@calxeda.com,
broonie@kernel.org, oskar@scara.com, Fabio Estevam,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, shawn.guo@linaro.org,
linuxppc-dev@lists.ozlabs.org
In-Reply-To: <1DD289F6464F0949A2FCA5AA6DC23F82876A53@039-SN2MPN1-013.039d.mgd.msft.net>
Li Xiubo wrote:
>> If there are any comments that say PPC but are not PPC-specific, that
>> >should be fixed.
> Yes, find it.
>
> The comments is in "sound/soc/fsl/Makefile" :
> +++++++++++
> "# Freescale PowerPC SSI/DMA Platform Support"
> -----------
>
> But fsl-spdif.o is also under it.
> And this is also support ARM and PowerPC platforms at the same time ?
> If so, the comments should be modified to :
> +++++++++++
> "# Freescale PowerPC and ARM SSI/DMA Platform Support"
> -----------
Yes, this should be changed.
^ permalink raw reply
* RE: [PATCHv2 1/8] ALSA: Add SAI SoC Digital Audio Interface driver.
From: Li Xiubo @ 2013-11-06 3:27 UTC (permalink / raw)
To: Timur Tabi, Guangyu Chen
Cc: mark.rutland@arm.com, alsa-devel@alsa-project.org,
linux-doc@vger.kernel.org, tiwai@suse.de, Huan Wang,
perex@perex.cz, Shawn Guo, LW@KARO-electronics.de,
linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org,
grant.likely@linaro.org, devicetree@vger.kernel.org,
ian.campbell@citrix.com, pawel.moll@arm.com,
swarren@wwwdotorg.org, rob.herring@calxeda.com,
broonie@kernel.org, oskar@scara.com, Fabio Estevam,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
rob@landley.net, Zhengxiong Jin, shawn.guo@linaro.org,
linuxppc-dev@lists.ozlabs.org
In-Reply-To: <5278F1FA.1060706@tabi.org>
> > But fsl-ssi.o and fsl-spdif.o is based PowrePC platform? Which we can
> see from the comments.
>=20
> fsl_ssi was originally PPC-only, but it now supports PPC and ARM. You
> can see that from the git history.
>=20
> If there are any comments that say PPC but are not PPC-specific, that
> should be fixed.
Yes, find it.
The comments is in "sound/soc/fsl/Makefile" :
+++++++++++
"# Freescale PowerPC SSI/DMA Platform Support"
-----------
But fsl-spdif.o is also under it.
And this is also support ARM and PowerPC platforms at the same time ?
If so, the comments should be modified to :
+++++++++++
"# Freescale PowerPC and ARM SSI/DMA Platform Support"
-----------
Best Regards,
Xiubo
^ permalink raw reply
* [PATCH] powerpc/boot: Properly handle the base "of" boot wrapper
From: Benjamin Herrenschmidt @ 2013-11-06 3:09 UTC (permalink / raw)
To: linuxppc-dev
The wrapper script needs an explicit rule for the "of" boot
wrapper (generic wrapper, similar to pseries). Before
0c9fa29149d3726e14262aeb0c8461a948cc9d56 it was hanlded
implicitly by the statement:
platformo=$object/"$platform".o
But now that epapr.o needs to be added, that doesn't work
and an explicit rule must be added.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/boot/wrapper | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/boot/wrapper b/arch/powerpc/boot/wrapper
index ac16e99..2e1af74 100755
--- a/arch/powerpc/boot/wrapper
+++ b/arch/powerpc/boot/wrapper
@@ -147,6 +147,10 @@ link_address='0x400000'
make_space=y
case "$platform" in
+of)
+ platformo="$object/of.o $object/epapr.o"
+ make_space=n
+ ;;
pseries)
platformo="$object/of.o $object/epapr.o"
link_address='0x4000000'
^ permalink raw reply related
* RE: [PATCH V4 3/3] powerpc/85xx: Add TWR-P1025 board support
From: Xiaobo Xie @ 2013-11-06 2:31 UTC (permalink / raw)
To: Scott Wood; +Cc: Michael Johnston, linuxppc-dev@lists.ozlabs.org
In-Reply-To: <1380230838.24959.322.camel@snotra.buserror.net>
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^ permalink raw reply
* RE: [PATCH V5 1/2] powerpc/85xx: Add QE common init function
From: Xiaobo Xie @ 2013-11-06 2:27 UTC (permalink / raw)
To: Scott Wood; +Cc: linuxppc-dev@lists.ozlabs.org
In-Reply-To: <1380301237.24959.397.camel@snotra.buserror.net>
SGkgU2NvdHQsDQoNCj4gLS0tLS1PcmlnaW5hbCBNZXNzYWdlLS0tLS0NCj4gRnJvbTogV29vZCBT
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^ permalink raw reply
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