Commit 4e639f11 authored by Hector Martin's avatar Hector Martin Committed by Manivannan Sadhasivam
Browse files

PCI: apple: Add T602x PCIe support 



This version of the hardware moved around a bunch of registers, so we
avoid the old compatible for these and introduce register offset
structures to handle the differences.

Signed-off-by: default avatarHector Martin <marcan@marcan.st>
Signed-off-by: default avatarAlyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: default avatarMarc Zyngier <maz@kernel.org>
Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Tested-by: default avatarJanne Grunau <j@jannau.net>
Reviewed-by: default avatarRob Herring (Arm) <robh@kernel.org>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: default avatarAlyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://patch.msgid.link/20250401091713.2765724-14-maz@kernel.org
parent 3f1ccd6e

drivers/pci/controller/pcie-apple.c

+21 −0
Original line number Diff line number Diff line
@@ -124,6 +124,13 @@ 
#define   PORT_TUNSTAT_PERST_ACK_PEND	BIT(1)

#define PORT_PREFMEM_ENABLE		0x00994



/* T602x (M2-pro and co) */

#define PORT_T602X_MSIADDR	0x016c

#define PORT_T602X_MSIADDR_HI	0x0170

#define PORT_T602X_PERST	0x082c

#define PORT_T602X_RID2SID	0x3000

#define PORT_T602X_MSIMAP	0x3800



#define PORT_MSIMAP_ENABLE	BIT(31)

#define PORT_MSIMAP_TARGET	GENMASK(7, 0)
@@ -158,6 +165,18 @@ static const struct hw_info t8103_hw = { 
	.max_rid2sid		= 64,

};



static const struct hw_info t602x_hw = {

	.phy_lane_ctl		= 0,

	.port_msiaddr		= PORT_T602X_MSIADDR,

	.port_msiaddr_hi	= PORT_T602X_MSIADDR_HI,

	.port_refclk		= 0,

	.port_perst		= PORT_T602X_PERST,

	.port_rid2sid		= PORT_T602X_RID2SID,

	.port_msimap		= PORT_T602X_MSIMAP,

	/* 16 on t602x, guess for autodetect on future HW */

	.max_rid2sid		= 512,

};



struct apple_pcie {

	struct mutex		lock;

	struct device		*dev;
@@ -425,6 +444,7 @@ static int apple_pcie_port_setup_irq(struct apple_pcie_port *port) 
	/* Disable all interrupts */

	writel_relaxed(~0, port->base + PORT_INTMSK);

	writel_relaxed(~0, port->base + PORT_INTSTAT);

	writel_relaxed(~0, port->base + PORT_LINKCMDSTS);



	irq_set_chained_handler_and_data(irq, apple_port_irq_handler, port);
@@ -863,6 +883,7 @@ static int apple_pcie_probe(struct platform_device *pdev) 
}



static const struct of_device_id apple_pcie_of_match[] = {

	{ .compatible = "apple,t6020-pcie",	.data = &t602x_hw },

	{ .compatible = "apple,pcie",		.data = &t8103_hw },

	{ }

};