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/linux-6.12.1/drivers/mailbox/
Darm_mhuv3.c268 int (*rx_startup)(struct mhuv3 *mhu, struct mbox_chan *chan);
269 void (*rx_shutdown)(struct mhuv3 *mhu, struct mbox_chan *chan);
270 void *(*read_data)(struct mhuv3 *mhu, struct mbox_chan *chan);
271 void (*rx_complete)(struct mhuv3 *mhu, struct mbox_chan *chan);
272 void (*tx_startup)(struct mhuv3 *mhu, struct mbox_chan *chan);
273 void (*tx_shutdown)(struct mhuv3 *mhu, struct mbox_chan *chan);
274 int (*last_tx_done)(struct mhuv3 *mhu, struct mbox_chan *chan);
275 int (*send_data)(struct mhuv3 *mhu, struct mbox_chan *chan, void *arg);
314 struct mbox_chan *(*mbox_of_xlate)(struct mhuv3 *mhu,
317 void (*combined_irq_setup)(struct mhuv3 *mhu);
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Darm_mhuv2.c162 * @mbox: Mailbox controller belonging to the MHU frame.
207 int (*rx_startup)(struct mhuv2 *mhu, struct mbox_chan *chan);
208 void (*rx_shutdown)(struct mhuv2 *mhu, struct mbox_chan *chan);
209 void *(*read_data)(struct mhuv2 *mhu, struct mbox_chan *chan);
211 void (*tx_startup)(struct mhuv2 *mhu, struct mbox_chan *chan);
212 void (*tx_shutdown)(struct mhuv2 *mhu, struct mbox_chan *chan);
213 int (*last_tx_done)(struct mhuv2 *mhu, struct mbox_chan *chan);
214 int (*send_data)(struct mhuv2 *mhu, struct mbox_chan *chan, void *arg);
261 static int mhuv2_doorbell_rx_startup(struct mhuv2 *mhu, struct mbox_chan *chan) in mhuv2_doorbell_rx_startup() argument
266 &mhu->recv->ch_wn[priv->ch_wn_idx].mask_clear); in mhuv2_doorbell_rx_startup()
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Darm_mhu_db.c5 * Based on ARM MHU driver by Jassi Brar <jaswinder.singh@linaro.org>
46 * struct mhu_db_channel - ARM MHU Mailbox allocated channel information
48 * @mhu: Pointer to parent mailbox device
53 struct arm_mhu *mhu; member
78 void __iomem *base = chan_info->mhu->mlink[chan_info->pchan].rx_reg; in mhu_db_mbox_clear_irq()
83 static unsigned int mhu_db_mbox_irq_to_pchan_num(struct arm_mhu *mhu, int irq) in mhu_db_mbox_irq_to_pchan_num() argument
88 if (mhu->mlink[pchan].irq == irq) in mhu_db_mbox_irq_to_pchan_num()
94 mhu_db_mbox_irq_to_channel(struct arm_mhu *mhu, unsigned int pchan) in mhu_db_mbox_irq_to_channel() argument
99 struct mbox_controller *mbox = &mhu->mbox; in mhu_db_mbox_irq_to_channel()
100 void __iomem *base = mhu->mlink[pchan].rx_reg; in mhu_db_mbox_irq_to_channel()
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Dplatform_mhu.c119 struct platform_mhu *mhu; in platform_mhu_probe() local
126 mhu = devm_kzalloc(dev, sizeof(*mhu), GFP_KERNEL); in platform_mhu_probe()
127 if (!mhu) in platform_mhu_probe()
130 mhu->base = devm_platform_ioremap_resource(pdev, 0); in platform_mhu_probe()
131 if (IS_ERR(mhu->base)) { in platform_mhu_probe()
133 return PTR_ERR(mhu->base); in platform_mhu_probe()
137 mhu->chan[i].con_priv = &mhu->mlink[i]; in platform_mhu_probe()
138 mhu->mlink[i].irq = platform_get_irq(pdev, i); in platform_mhu_probe()
139 if (mhu->mlink[i].irq < 0) in platform_mhu_probe()
140 return mhu->mlink[i].irq; in platform_mhu_probe()
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Darm_mhu.c113 struct arm_mhu *mhu; in mhu_probe() local
117 if (!of_device_is_compatible(dev->of_node, "arm,mhu")) in mhu_probe()
121 mhu = devm_kzalloc(dev, sizeof(*mhu), GFP_KERNEL); in mhu_probe()
122 if (!mhu) in mhu_probe()
125 mhu->base = devm_ioremap_resource(dev, &adev->res); in mhu_probe()
126 if (IS_ERR(mhu->base)) in mhu_probe()
127 return PTR_ERR(mhu->base); in mhu_probe()
130 mhu->chan[i].con_priv = &mhu->mlink[i]; in mhu_probe()
131 mhu->mlink[i].irq = adev->irq[i]; in mhu_probe()
132 mhu->mlink[i].rx_reg = mhu->base + mhu_reg[i]; in mhu_probe()
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DKconfig12 tristate "ARM MHU Mailbox"
15 Say Y here if you want to build the ARM MHU controller driver.
46 tristate "Platform MHU Mailbox"
50 Say Y here if you want to build a platform specific variant MHU
/linux-6.12.1/Documentation/devicetree/bindings/mailbox/
Darm,mhuv3.yaml14 The Arm Message Handling Unit (MHU) Version 3 is a mailbox controller that
23 is composed of a MHU Sender (MHUS) containing a PostBox (PBX) block and a MHU
27 - Configure the MHU
32 - Configure the MHU
52 MHU can support is between 1 and 128, numbered starting from 0 in ascending
59 region, wherein the MHU Doorbell is used strictly as an interrupt generation
73 MHU can support is between 1-1024, if the FastChannel word-size is 32-bits,
79 region, wherein the MHU FastChannel is used as an interrupt generation
93 MHU can support is between 1 and 64, numbered starting from 0 in ascending
98 memory region, wherein the MHU FIFO is used to transmit, in order, a small
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Darm,mhu.yaml4 $id: http://devicetree.org/schemas/mailbox/arm,mhu.yaml#
7 title: ARM MHU Mailbox Controller
13 The ARM's Message-Handling-Unit (MHU) is a mailbox controller that has 3
14 independent channels/links to communicate with remote processor(s). MHU links
21 The MHU hardware also allows operations in doorbell mode. The MHU drives the
37 - arm,mhu
38 - arm,mhu-doorbell
47 - const: arm,mhu
52 - const: arm,mhu-doorbell
97 compatible = "arm,mhu", "arm,primecell";
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Darm,mhuv2.yaml14 The Arm Message Handling Unit (MHU) Version 2 is a mailbox controller that has
20 be written to or read from. If a pair of MHU controllers is implemented
27 An MHU controller must be specified along with the supported transport
39 may be transmitted through a shared memory region, wherein the MHU is used
111 mhu: mailbox@2b1f0000 {
142 mboxes = <&mhu 0 5>; // Channel Window Group 0, doorbell 5.
143 mboxes = <&mhu 1 7>; // Channel Window Group 1, doorbell 7.
144 mboxes = <&mhu 2 0>; // Channel Window Group 2, data transfer protocol with 1 window.
145 mboxes = <&mhu 3 0>; // Channel Window Group 3, data transfer protocol with 5 windows.
146 mboxes = <&mhu 4 0>; // Channel Window Group 4, data transfer protocol with 7 windows.
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Damlogic,meson-gxbb-mhu.yaml5 $id: http://devicetree.org/schemas/mailbox/amlogic,meson-gxbb-mhu.yaml#
14 The Amlogic's Meson SoCs Message-Handling-Unit (MHU) is a mailbox controller
16 MHU links are hardwired on a platform. A link raises interrupt for any
24 - amlogic,meson-gxbb-mhu
33 of MHU.
49 compatible = "amlogic,meson-gxbb-mhu";
/linux-6.12.1/Documentation/devicetree/bindings/clock/
Dfujitsu,mb86s70-crg11.txt17 mhu: mhu0@2b1f0000 {
19 compatible = "arm,mhu";
/linux-6.12.1/arch/arm64/boot/dts/arm/
Djuno-scmi.dtsi188 compatible = "arm,mhu-doorbell", "arm,primecell";
Djuno-base.dtsi25 mailbox: mhu@2b1f0000 {
26 compatible = "arm,mhu", "arm,primecell";
/linux-6.12.1/drivers/firmware/
DKconfig18 Cores(AP) and the System Control Processor(SCP). The MHU peripheral
Darm_scpi.c6 * and the Application Processors(AP). The Message Handling Unit(MHU)
/linux-6.12.1/arch/arm64/boot/dts/amlogic/
Dmeson-gx.dtsi574 compatible = "amlogic,meson-gxbb-mhu";
Dmeson-axg.dtsi1304 compatible = "amlogic,meson-gxbb-mhu";
/linux-6.12.1/drivers/firmware/arm_scmi/
Ddriver.c6 * and the Application Processors(AP). The Message Handling Unit(MHU)