device/device.h: Rename busses for clarity

This renames bus to upstream and link_list to downstream.

Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Change-Id: I80a81b6b8606e450ff180add9439481ec28c2420
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78330
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

src/mainboard/aopen/dxplplusu/acpi_tables.c

@@ -11,7 +11,7 @@ unsigned long acpi_fill_madt(unsigned long current)
 	bdev = pcidev_on_root(2, 0);
 	/* P64H2 Bus B IOAPIC */
 	if (bdev)
-		dev = pcidev_path_behind(bdev->link_list, PCI_DEVFN(28, 0));
+		dev = pcidev_path_behind(bdev->downstream, PCI_DEVFN(28, 0));
 	if (dev) {
 		res = find_resource(dev, PCI_BASE_ADDRESS_0);
 		current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current, res->base);
@@ -19,7 +19,7 @@ unsigned long acpi_fill_madt(unsigned long current)
 
 	/* P64H2 Bus A IOAPIC */
 	if (bdev)
-		dev = pcidev_path_behind(bdev->link_list, PCI_DEVFN(30, 0));
+		dev = pcidev_path_behind(bdev->downstream, PCI_DEVFN(30, 0));
 	if (dev) {
 		res = find_resource(dev, PCI_BASE_ADDRESS_0);
 		current += acpi_create_madt_ioapic_from_hw((acpi_madt_ioapic_t *)current, res->base);

src/mainboard/emulation/qemu-i440fx/northbridge.c

@@ -39,7 +39,7 @@ static void qemu_reserve_ports(struct device *dev, unsigned int idx,
 
 static void cpu_pci_domain_set_resources(struct device *dev)
 {
-	assign_resources(dev->link_list);
+	assign_resources(dev->downstream);
 }
 
 static void cpu_pci_domain_read_resources(struct device *dev)

src/mainboard/google/brox/mainboard.c

@@ -106,7 +106,7 @@ static void mainboard_dev_init(struct device *dev)
 static void mainboard_generate_wwan_shutdown(const struct device *dev)
 {
 	const struct drivers_wwan_fm_config *config = config_of(dev);
-	const struct device *parent = dev->bus->dev;
+	const struct device *parent = dev->upstream->dev;
 
 	if (!config)
 		return;
@@ -126,7 +126,7 @@ static void mainboard_generate_wwan_shutdown(const struct device *dev)
 static void mainboard_generate_dgpu_shutdown(const struct device *dev)
 {
 	/* Call `_OFF` from the Power Resource associated with the dGPU's PEG port. */
-	const struct device *parent = dev->bus->dev;
+	const struct device *parent = dev->upstream->dev;
 
 	if (parent)
 		acpigen_emit_namestring(acpi_device_path_join(parent, "PGPR._OFF"));

src/mainboard/google/brya/mainboard.c

@@ -106,7 +106,7 @@ static void mainboard_dev_init(struct device *dev)
 static void mainboard_generate_wwan_shutdown(const struct device *dev)
 {
 	const struct drivers_wwan_fm_config *config = config_of(dev);
-	const struct device *parent = dev->bus->dev;
+	const struct device *parent = dev->upstream->dev;
 
 	if (!config)
 		return;
@@ -126,7 +126,7 @@ static void mainboard_generate_wwan_shutdown(const struct device *dev)
 static void mainboard_generate_dgpu_shutdown(const struct device *dev)
 {
 	/* Call `_OFF` from the Power Resource associated with the dGPU's PEG port. */
-	const struct device *parent = dev->bus->dev;
+	const struct device *parent = dev->upstream->dev;
 
 	if (parent)
 		acpigen_emit_namestring(acpi_device_path_join(parent, "PGPR._OFF"));

src/mainboard/google/kahlee/variants/careena/mainboard.c

@@ -26,7 +26,7 @@ void variant_devtree_update(void)
 	if (mmio_dev == NULL)
 		return;
 
-	while ((child = dev_bus_each_child(mmio_dev->link_list, child)) != NULL) {
+	while ((child = dev_bus_each_child(mmio_dev->downstream, child)) != NULL) {
 		if (child->path.type != DEVICE_PATH_I2C)
 			continue;
 		if (child->path.i2c.device != 0x1a)

src/mainboard/google/kahlee/variants/treeya/audio.c

@@ -25,7 +25,7 @@ void variant_devtree_update(void)
 		}
 	} while (mmio_dev->path.mmio.addr != APU_I2C0_BASE);
 
-	while ((child = dev_bus_each_child(mmio_dev->link_list, child)) != NULL) {
+	while ((child = dev_bus_each_child(mmio_dev->downstream, child)) != NULL) {
 		if (child->path.type != DEVICE_PATH_I2C)
 			continue;
 		if (child->path.i2c.device != RT58_I2C_ADDRESS)

src/mainboard/google/octopus/mainboard.c

@@ -179,7 +179,7 @@ static void audio_codec_device_update(void)
 {
 	struct device *audio_dev = NULL;
 	struct bus *audio_i2c_bus =
-		pcidev_path_on_root(PCH_DEVFN_I2C5)->link_list;
+		pcidev_path_on_root(PCH_DEVFN_I2C5)->downstream;
 	enum ssfc_audio_codec codec = ssfc_get_audio_codec();
 
 	while ((audio_dev = dev_bus_each_child(audio_i2c_bus, audio_dev))) {

src/mainboard/google/rex/mainboard.c

@@ -82,7 +82,7 @@ static void mainboard_generate_s0ix_hook(void)
 static void mainboard_generate_wwan_shutdown(const struct device *dev)
 {
 	const struct drivers_wwan_fm_config *config = config_of(dev);
-	const struct device *parent = dev->bus->dev;
+	const struct device *parent = dev->upstream->dev;
 
 	if (!config)
 		return;

src/mainboard/google/zork/variants/baseboard/ramstage_common.c

@@ -115,7 +115,7 @@ void variant_touchscreen_update(void)
 	if (variant_uses_v3_6_schematics())
 		return;
 
-	while ((child = dev_bus_each_child(mmio_dev->link_list, child)) != NULL) {
+	while ((child = dev_bus_each_child(mmio_dev->downstream, child)) != NULL) {
 		struct drivers_i2c_generic_config *cfg;
 
 		if (child->chip_ops == &drivers_i2c_generic_ops) {

src/mainboard/ibase/mb899/mptable.c

@@ -19,7 +19,7 @@ static void *smp_write_config_table(void *v)
 
 	firewire = dev_find_device(0x104c, 0x8023, 0);
 	if (firewire) {
-		firewire_bus = firewire->bus->secondary;
+		firewire_bus = firewire->upstream->secondary;
 		printk(BIOS_SPEW, "Firewire device is on bus %x\n",
 				firewire_bus);
 	}
@@ -30,7 +30,7 @@ static void *smp_write_config_table(void *v)
 	if (!riser)
 		riser = dev_find_device(0x3388, 0x0022, 0);
 	if (riser) {
-		riser_bus = riser->link_list->secondary;
+		riser_bus = riser->downstream->secondary;
 		printk(BIOS_SPEW, "Riser bus is %x\n", riser_bus);
 	}
 

src/mainboard/kontron/986lcd-m/mptable.c

@@ -18,7 +18,7 @@ static void *smp_write_config_table(void *v)
 
 	firewire = dev_find_device(0x104c, 0x8023, 0);
 	if (firewire) {
-		firewire_bus = firewire->bus->secondary;
+		firewire_bus = firewire->upstream->secondary;
 	}
 
 	/* If a riser card is used, this riser is detected on bus 4, so its secondary bus is the */
@@ -27,7 +27,7 @@ static void *smp_write_config_table(void *v)
 	if (!riser)
 		riser = dev_find_device(0x3388, 0x0022, 0);
 	if (riser) {
-		riser_bus = riser->link_list->secondary;
+		riser_bus = riser->downstream->secondary;
 	}
 
 	mptable_write_buses(mc, NULL, &isa_bus);

src/mainboard/pcengines/apu2/mainboard.c

@@ -277,7 +277,7 @@ const char *smbios_mainboard_serial_number(void)
 
 	dev = pcidev_on_root(2, 2);
 	if (dev)
-		dev = pcidev_path_behind(dev->link_list, PCI_DEVFN(0, 0));
+		dev = pcidev_path_behind(dev->downstream, PCI_DEVFN(0, 0));
 	if (!dev)
 		return serial;
 

src/mainboard/roda/rk9/ti_pci7xx1.c

@@ -19,7 +19,7 @@ static void pci7xx1_enable(struct device *const dev)
 		u16 gcr = pci_read_config16(dev, 0x86);
 		for (fn = 5; fn > 0; --fn) {
 			const struct device *const d =
-				pcidev_path_behind(dev->bus, PCI_DEVFN(slot, fn));
+				pcidev_path_behind(dev->upstream, PCI_DEVFN(slot, fn));
 			if (!d || d->enabled) continue;
 			printk(BIOS_DEBUG,
 				"%s: Hiding function #%d.\n", __func__, fn);

src/mainboard/siemens/fa_ehl/mainboard.c

@@ -42,7 +42,7 @@ static uint8_t is_mac_adr_valid(uint8_t mac[MAC_ADDR_LEN])
  */
 enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_LEN])
 {
-	struct bus *parent = dev->bus;
+	struct bus *parent = dev->upstream;
 	uint8_t buf[16], mapping[16], i = 0, chain_len = 0;
 
 	memset(buf, 0, sizeof(buf));
@@ -51,10 +51,10 @@ enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_L
 	/* The first entry in the tree is the device itself. */
 	buf[0] = dev->path.pci.devfn;
 	chain_len = 1;
-	for (i = 1; i < MAX_PATH_DEPTH && parent->dev->bus->subordinate; i++) {
+	for (i = 1; i < MAX_PATH_DEPTH && parent->dev->upstream->subordinate; i++) {
 		buf[i] = parent->dev->path.pci.devfn;
 		chain_len++;
-		parent = parent->dev->bus;
+		parent = parent->dev->upstream;
 	}
 	if (i == MAX_PATH_DEPTH) {
 		/* The path is deeper than MAX_PATH_DEPTH devices, error. */

src/mainboard/siemens/mc_apl1/mainboard.c

@@ -55,7 +55,7 @@ static uint8_t is_mac_adr_valid(uint8_t mac[MAC_ADDR_LEN])
  */
 enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_LEN])
 {
-	struct bus *parent = dev->bus;
+	struct bus *parent = dev->upstream;
 	uint8_t buf[16], mapping[16], i = 0, chain_len = 0;
 
 	memset(buf, 0, sizeof(buf));
@@ -64,10 +64,10 @@ enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_L
 	/* The first entry in the tree is the device itself. */
 	buf[0] = dev->path.pci.devfn;
 	chain_len = 1;
-	for (i = 1; i < MAX_PATH_DEPTH && parent->dev->bus->subordinate; i++) {
+	for (i = 1; i < MAX_PATH_DEPTH && parent->dev->upstream->subordinate; i++) {
 		buf[i] = parent->dev->path.pci.devfn;
 		chain_len++;
-		parent = parent->dev->bus;
+		parent = parent->dev->upstream;
 	}
 	if (i == MAX_PATH_DEPTH) {
 		/* The path is deeper than MAX_PATH_DEPTH devices, error. */

src/mainboard/siemens/mc_apl1/variants/mc_apl3/mainboard.c

@@ -41,7 +41,7 @@ void variant_mainboard_final(void)
 
 		/* Disable clock outputs 0 and 2-4 (CLKOUT) for upstream XIO2001 PCIe to PCI
 		   Bridge. */
-		struct device *parent = dev->bus->dev;
+		struct device *parent = dev->upstream->dev;
 		if (parent && parent->device == PCI_DID_TI_XIO2001)
 			pci_write_config8(parent, 0xd8, 0x1d);
 	}
@@ -50,7 +50,7 @@ void variant_mainboard_final(void)
 	   mainboard. */
 	dev = dev_find_device(PCI_VID_SIEMENS, 0x403f, 0);
 	if (dev) {
-		struct device *parent = dev->bus->dev;
+		struct device *parent = dev->upstream->dev;
 		if (parent && parent->device == PCI_DID_TI_XIO2001)
 			pci_write_config8(parent, 0xd8, 0x3c);
 	}

src/mainboard/siemens/mc_apl1/variants/mc_apl5/mainboard.c

@@ -51,7 +51,7 @@ void variant_mainboard_final(void)
 
 		/* Disable clock outputs 0-3 (CLKOUT) for upstream XIO2001 PCIe to PCI
 		   Bridge. */
-		struct device *parent = dev->bus->dev;
+		struct device *parent = dev->upstream->dev;
 		if (parent && parent->device == PCI_DID_TI_XIO2001)
 			pci_write_config8(parent, 0xd8, 0x0f);
 	}
@@ -60,7 +60,7 @@ void variant_mainboard_final(void)
 	   mainboard. */
 	dev = dev_find_device(PCI_VID_SIEMENS, 0x403f, 0);
 	if (dev) {
-		struct device *parent = dev->bus->dev;
+		struct device *parent = dev->upstream->dev;
 		if (parent && parent->device == PCI_DID_TI_XIO2001)
 			pci_write_config8(parent, 0xd8, 0x3e);
 	}

src/mainboard/siemens/mc_apl1/variants/mc_apl6/mainboard.c

@@ -41,7 +41,7 @@ void variant_mainboard_final(void)
 
 		/* Disable clock outputs 0-3 (CLKOUT) for upstream XIO2001 PCIe to PCI
 		   Bridge. */
-		struct device *parent = dev->bus->dev;
+		struct device *parent = dev->upstream->dev;
 		if (parent && parent->device == PCI_DID_TI_XIO2001)
 			pci_write_config8(parent, 0xd8, 0x0F);
 	}
@@ -50,7 +50,7 @@ void variant_mainboard_final(void)
 	   mainboard. */
 	dev = dev_find_device(PCI_VID_SIEMENS, 0x403f, 0);
 	if (dev) {
-		struct device *parent = dev->bus->dev;
+		struct device *parent = dev->upstream->dev;
 		if (parent && parent->device == PCI_DID_TI_XIO2001)
 			pci_write_config8(parent, 0xd8, 0x3c);
 	}

src/mainboard/siemens/mc_ehl/mainboard.c

@@ -42,7 +42,7 @@ static uint8_t is_mac_adr_valid(uint8_t mac[MAC_ADDR_LEN])
  */
 enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_LEN])
 {
-	struct bus *parent = dev->bus;
+	struct bus *parent = dev->upstream;
 	uint8_t buf[16], mapping[16], i = 0, chain_len = 0;
 
 	memset(buf, 0, sizeof(buf));
@@ -51,10 +51,10 @@ enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_L
 	/* The first entry in the tree is the device itself. */
 	buf[0] = dev->path.pci.devfn;
 	chain_len = 1;
-	for (i = 1; i < MAX_PATH_DEPTH && parent->dev->bus->subordinate; i++) {
+	for (i = 1; i < MAX_PATH_DEPTH && parent->dev->upstream->subordinate; i++) {
 		buf[i] = parent->dev->path.pci.devfn;
 		chain_len++;
-		parent = parent->dev->bus;
+		parent = parent->dev->upstream;
 	}
 	if (i == MAX_PATH_DEPTH) {
 		/* The path is deeper than MAX_PATH_DEPTH devices, error. */