arch/arm/mach-bcm283x/msg.c - filogic/uboot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2012 Stephen Warren
  */

 #include <memalign.h>
 #include <phys2bus.h>
 #include <asm/arch/mbox.h>
 #include <linux/delay.h>

 struct msg_set_power_state {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_set_power_state set_power_state;
 	u32 end_tag;
 };

 struct msg_get_clock_rate {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
 	u32 end_tag;
 };

 struct msg_set_sdhost_clock {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_set_sdhost_clock set_sdhost_clock;
 	u32 end_tag;
 };

 struct msg_query {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
 	u32 end_tag;
 };

 struct msg_setup {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
 	struct bcm2835_mbox_tag_virtual_w_h virtual_w_h;
 	struct bcm2835_mbox_tag_depth depth;
 	struct bcm2835_mbox_tag_pixel_order pixel_order;
 	struct bcm2835_mbox_tag_alpha_mode alpha_mode;
 	struct bcm2835_mbox_tag_virtual_offset virtual_offset;
 	struct bcm2835_mbox_tag_overscan overscan;
 	struct bcm2835_mbox_tag_allocate_buffer allocate_buffer;
 	struct bcm2835_mbox_tag_pitch pitch;
 	u32 end_tag;
 };

 struct msg_notify_vl805_reset {
 	struct bcm2835_mbox_hdr hdr;
 	struct bcm2835_mbox_tag_pci_dev_addr dev_addr;
 	u32 end_tag;
 };

 int bcm2835_power_on_module(u32 module)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
 	int ret;

 	BCM2835_MBOX_INIT_HDR(msg_pwr);
 	BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
 			      SET_POWER_STATE);
 	msg_pwr->set_power_state.body.req.device_id = module;
 	msg_pwr->set_power_state.body.req.state =
 		BCM2835_MBOX_SET_POWER_STATE_REQ_ON |
 		BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;

 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
 				     &msg_pwr->hdr);
 	if (ret) {
 		printf("bcm2835: Could not set module %u power state\n",
 		       module);
 		return -EIO;
 	}

 	return 0;
 }

 int bcm2835_get_mmc_clock(u32 clock_id)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1);
 	int ret;
 	u32 clock_rate = 0;

 	ret = bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);
 	if (ret)
 		return ret;

 	BCM2835_MBOX_INIT_HDR(msg_clk);
 	BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
 	msg_clk->get_clock_rate.body.req.clock_id = clock_id;

 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
 	if (ret) {
 		printf("bcm2835: Could not query eMMC clock rate\n");
 		return -EIO;
 	}

 	clock_rate = msg_clk->get_clock_rate.body.resp.rate_hz;

 	if (clock_rate == 0) {
 		BCM2835_MBOX_INIT_HDR(msg_clk);
 		BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_MAX_CLOCK_RATE);
 		msg_clk->get_clock_rate.body.req.clock_id = clock_id;

 		ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
 		if (ret) {
 			printf("bcm2835: Could not query max eMMC clock rate\n");
 			return -EIO;
 		}

 		clock_rate = msg_clk->get_clock_rate.body.resp.rate_hz;
 	}

 	return clock_rate;
 }

 int bcm2835_set_sdhost_clock(u32 rate_hz, u32 *rate_1, u32 *rate_2)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_sdhost_clock, msg_sdhost_clk, 1);
 	int ret;

 	BCM2835_MBOX_INIT_HDR(msg_sdhost_clk);
 	BCM2835_MBOX_INIT_TAG(&msg_sdhost_clk->set_sdhost_clock, SET_SDHOST_CLOCK);

 	msg_sdhost_clk->set_sdhost_clock.body.req.rate_hz = rate_hz;

 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_sdhost_clk->hdr);
 	if (ret) {
 		printf("bcm2835: Could not query sdhost clock rate\n");
 		return -EIO;
 	}

 	*rate_1 = msg_sdhost_clk->set_sdhost_clock.body.resp.rate_1;
 	*rate_2 = msg_sdhost_clk->set_sdhost_clock.body.resp.rate_2;

 	return 0;
 }

 int bcm2835_get_video_size(int *widthp, int *heightp)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
 	int ret;

 	BCM2835_MBOX_INIT_HDR(msg_query);
 	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
 				     GET_PHYSICAL_W_H);
 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
 	if (ret) {
 		printf("bcm2835: Could not query display resolution\n");
 		return ret;
 	}
 	*widthp = msg_query->physical_w_h.body.resp.width;
 	*heightp = msg_query->physical_w_h.body.resp.height;

 	return 0;
 }

 int bcm2835_set_video_params(int *widthp, int *heightp, int depth_bpp,
 			     int pixel_order, int alpha_mode, ulong *fb_basep,
 			     ulong *fb_sizep, int *pitchp)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
 	int ret;

 	BCM2835_MBOX_INIT_HDR(msg_setup);
 	BCM2835_MBOX_INIT_TAG(&msg_setup->physical_w_h, SET_PHYSICAL_W_H);
 	msg_setup->physical_w_h.body.req.width = *widthp;
 	msg_setup->physical_w_h.body.req.height = *heightp;
 	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_w_h, SET_VIRTUAL_W_H);
 	msg_setup->virtual_w_h.body.req.width = *widthp;
 	msg_setup->virtual_w_h.body.req.height = *heightp;
 	BCM2835_MBOX_INIT_TAG(&msg_setup->depth, SET_DEPTH);
 	msg_setup->depth.body.req.bpp = 32;
 	BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
 	msg_setup->pixel_order.body.req.order = pixel_order;
 	BCM2835_MBOX_INIT_TAG(&msg_setup->alpha_mode, SET_ALPHA_MODE);
 	msg_setup->alpha_mode.body.req.alpha = alpha_mode;
 	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_offset, SET_VIRTUAL_OFFSET);
 	msg_setup->virtual_offset.body.req.x = 0;
 	msg_setup->virtual_offset.body.req.y = 0;
 	BCM2835_MBOX_INIT_TAG(&msg_setup->overscan, SET_OVERSCAN);
 	msg_setup->overscan.body.req.top = 0;
 	msg_setup->overscan.body.req.bottom = 0;
 	msg_setup->overscan.body.req.left = 0;
 	msg_setup->overscan.body.req.right = 0;
 	BCM2835_MBOX_INIT_TAG(&msg_setup->allocate_buffer, ALLOCATE_BUFFER);
 	msg_setup->allocate_buffer.body.req.alignment = 0x100;
 	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_setup->pitch, GET_PITCH);

 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_setup->hdr);
 	if (ret) {
 		printf("bcm2835: Could not configure display\n");
 		return ret;
 	}
 	*widthp = msg_setup->physical_w_h.body.resp.width;
 	*heightp = msg_setup->physical_w_h.body.resp.height;
 	*pitchp = msg_setup->pitch.body.resp.pitch;
 	*fb_basep = bus_to_phys(
 			msg_setup->allocate_buffer.body.resp.fb_address);
 	*fb_sizep = msg_setup->allocate_buffer.body.resp.fb_size;

 	return 0;
 }

 /*
  * On the Raspberry Pi 4, after a PCI reset, VL805's (the xHCI chip) firmware
  * may either be loaded directly from an EEPROM or, if not present, by the
  * SoC's VideoCore. This informs VideoCore that VL805 needs its firmware
  * loaded.
  */
 int bcm2711_notify_vl805_reset(void)
 {
 	ALLOC_CACHE_ALIGN_BUFFER(struct msg_notify_vl805_reset,
 				 msg_notify_vl805_reset, 1);
 	int ret;
 	static int done = false;

 	if (done)
 		return 0;

 	done = true;

 	BCM2835_MBOX_INIT_HDR(msg_notify_vl805_reset);
 	BCM2835_MBOX_INIT_TAG(&msg_notify_vl805_reset->dev_addr,
 			      NOTIFY_XHCI_RESET);

 	/*
 	 * The pci device address is expected like this:
 	 *
 	 *   PCI_BUS << 20 | PCI_SLOT << 15 | PCI_FUNC << 12
 	 *
 	 * But since RPi4's PCIe setup is hardwired, we know the address in
 	 * advance.
 	 */
 	msg_notify_vl805_reset->dev_addr.body.req.dev_addr = 0x100000;

 	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
 				     &msg_notify_vl805_reset->hdr);
 	if (ret) {
 		printf("bcm2711: Failed to load vl805's firmware, %d\n", ret);
 		return -EIO;
 	}

 	udelay(200);

 	return 0;
 }
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* (C) Copyright 2012 Stephen Warren
	*/

	#include <memalign.h>
	#include <phys2bus.h>
	#include <asm/arch/mbox.h>
	#include <linux/delay.h>

	struct msg_set_power_state {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_set_power_state set_power_state;
	u32 end_tag;
	};

	struct msg_get_clock_rate {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
	u32 end_tag;
	};

	struct msg_set_sdhost_clock {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_set_sdhost_clock set_sdhost_clock;
	u32 end_tag;
	};

	struct msg_query {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
	u32 end_tag;
	};

	struct msg_setup {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_physical_w_h physical_w_h;
	struct bcm2835_mbox_tag_virtual_w_h virtual_w_h;
	struct bcm2835_mbox_tag_depth depth;
	struct bcm2835_mbox_tag_pixel_order pixel_order;
	struct bcm2835_mbox_tag_alpha_mode alpha_mode;
	struct bcm2835_mbox_tag_virtual_offset virtual_offset;
	struct bcm2835_mbox_tag_overscan overscan;
	struct bcm2835_mbox_tag_allocate_buffer allocate_buffer;
	struct bcm2835_mbox_tag_pitch pitch;
	u32 end_tag;
	};

	struct msg_notify_vl805_reset {
	struct bcm2835_mbox_hdr hdr;
	struct bcm2835_mbox_tag_pci_dev_addr dev_addr;
	u32 end_tag;
	};

	int bcm2835_power_on_module(u32 module)
	{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1);
	int ret;

	BCM2835_MBOX_INIT_HDR(msg_pwr);
	BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
	SET_POWER_STATE);
	msg_pwr->set_power_state.body.req.device_id = module;
	msg_pwr->set_power_state.body.req.state =
	BCM2835_MBOX_SET_POWER_STATE_REQ_ON \|
	BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
	&msg_pwr->hdr);
	if (ret) {
	printf("bcm2835: Could not set module %u power state\n",
	module);
	return -EIO;
	}

	return 0;
	}

	int bcm2835_get_mmc_clock(u32 clock_id)
	{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1);
	int ret;
	u32 clock_rate = 0;

	ret = bcm2835_power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);
	if (ret)
	return ret;

	BCM2835_MBOX_INIT_HDR(msg_clk);
	BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
	msg_clk->get_clock_rate.body.req.clock_id = clock_id;

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
	if (ret) {
	printf("bcm2835: Could not query eMMC clock rate\n");
	return -EIO;
	}

	clock_rate = msg_clk->get_clock_rate.body.resp.rate_hz;

	if (clock_rate == 0) {
	BCM2835_MBOX_INIT_HDR(msg_clk);
	BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_MAX_CLOCK_RATE);
	msg_clk->get_clock_rate.body.req.clock_id = clock_id;

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
	if (ret) {
	printf("bcm2835: Could not query max eMMC clock rate\n");
	return -EIO;
	}

	clock_rate = msg_clk->get_clock_rate.body.resp.rate_hz;
	}

	return clock_rate;
	}

	int bcm2835_set_sdhost_clock(u32 rate_hz, u32 rate_1, u32 rate_2)
	{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_set_sdhost_clock, msg_sdhost_clk, 1);
	int ret;

	BCM2835_MBOX_INIT_HDR(msg_sdhost_clk);
	BCM2835_MBOX_INIT_TAG(&msg_sdhost_clk->set_sdhost_clock, SET_SDHOST_CLOCK);

	msg_sdhost_clk->set_sdhost_clock.body.req.rate_hz = rate_hz;

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_sdhost_clk->hdr);
	if (ret) {
	printf("bcm2835: Could not query sdhost clock rate\n");
	return -EIO;
	}

	*rate_1 = msg_sdhost_clk->set_sdhost_clock.body.resp.rate_1;
	*rate_2 = msg_sdhost_clk->set_sdhost_clock.body.resp.rate_2;

	return 0;
	}

	int bcm2835_get_video_size(int widthp, int heightp)
	{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_query, msg_query, 1);
	int ret;

	BCM2835_MBOX_INIT_HDR(msg_query);
	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_query->physical_w_h,
	GET_PHYSICAL_W_H);
	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_query->hdr);
	if (ret) {
	printf("bcm2835: Could not query display resolution\n");
	return ret;
	}
	*widthp = msg_query->physical_w_h.body.resp.width;
	*heightp = msg_query->physical_w_h.body.resp.height;

	return 0;
	}

	int bcm2835_set_video_params(int widthp, int heightp, int depth_bpp,
	int pixel_order, int alpha_mode, ulong *fb_basep,
	ulong fb_sizep, int pitchp)
	{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_setup, msg_setup, 1);
	int ret;

	BCM2835_MBOX_INIT_HDR(msg_setup);
	BCM2835_MBOX_INIT_TAG(&msg_setup->physical_w_h, SET_PHYSICAL_W_H);
	msg_setup->physical_w_h.body.req.width = *widthp;
	msg_setup->physical_w_h.body.req.height = *heightp;
	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_w_h, SET_VIRTUAL_W_H);
	msg_setup->virtual_w_h.body.req.width = *widthp;
	msg_setup->virtual_w_h.body.req.height = *heightp;
	BCM2835_MBOX_INIT_TAG(&msg_setup->depth, SET_DEPTH);
	msg_setup->depth.body.req.bpp = 32;
	BCM2835_MBOX_INIT_TAG(&msg_setup->pixel_order, SET_PIXEL_ORDER);
	msg_setup->pixel_order.body.req.order = pixel_order;
	BCM2835_MBOX_INIT_TAG(&msg_setup->alpha_mode, SET_ALPHA_MODE);
	msg_setup->alpha_mode.body.req.alpha = alpha_mode;
	BCM2835_MBOX_INIT_TAG(&msg_setup->virtual_offset, SET_VIRTUAL_OFFSET);
	msg_setup->virtual_offset.body.req.x = 0;
	msg_setup->virtual_offset.body.req.y = 0;
	BCM2835_MBOX_INIT_TAG(&msg_setup->overscan, SET_OVERSCAN);
	msg_setup->overscan.body.req.top = 0;
	msg_setup->overscan.body.req.bottom = 0;
	msg_setup->overscan.body.req.left = 0;
	msg_setup->overscan.body.req.right = 0;
	BCM2835_MBOX_INIT_TAG(&msg_setup->allocate_buffer, ALLOCATE_BUFFER);
	msg_setup->allocate_buffer.body.req.alignment = 0x100;
	BCM2835_MBOX_INIT_TAG_NO_REQ(&msg_setup->pitch, GET_PITCH);

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_setup->hdr);
	if (ret) {
	printf("bcm2835: Could not configure display\n");
	return ret;
	}
	*widthp = msg_setup->physical_w_h.body.resp.width;
	*heightp = msg_setup->physical_w_h.body.resp.height;
	*pitchp = msg_setup->pitch.body.resp.pitch;
	*fb_basep = bus_to_phys(
	msg_setup->allocate_buffer.body.resp.fb_address);
	*fb_sizep = msg_setup->allocate_buffer.body.resp.fb_size;

	return 0;
	}

	/*
	* On the Raspberry Pi 4, after a PCI reset, VL805's (the xHCI chip) firmware
	* may either be loaded directly from an EEPROM or, if not present, by the
	* SoC's VideoCore. This informs VideoCore that VL805 needs its firmware
	* loaded.
	*/
	int bcm2711_notify_vl805_reset(void)
	{
	ALLOC_CACHE_ALIGN_BUFFER(struct msg_notify_vl805_reset,
	msg_notify_vl805_reset, 1);
	int ret;
	static int done = false;

	if (done)
	return 0;

	done = true;

	BCM2835_MBOX_INIT_HDR(msg_notify_vl805_reset);
	BCM2835_MBOX_INIT_TAG(&msg_notify_vl805_reset->dev_addr,
	NOTIFY_XHCI_RESET);

	/*
	* The pci device address is expected like this:
	*
	* PCI_BUS << 20 \| PCI_SLOT << 15 \| PCI_FUNC << 12
	*
	* But since RPi4's PCIe setup is hardwired, we know the address in
	* advance.
	*/
	msg_notify_vl805_reset->dev_addr.body.req.dev_addr = 0x100000;

	ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
	&msg_notify_vl805_reset->hdr);
	if (ret) {
	printf("bcm2711: Failed to load vl805's firmware, %d\n", ret);
	return -EIO;
	}

	udelay(200);

	return 0;
	}