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PCI: apple: Add T602x PCIe support

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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: Hector Martin <marcan@marcan.st>
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Tested-by: Janne Grunau <j@jannau.net>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://patch.msgid.link/20250401091713.2765724-14-maz@kernel.org
This commit is contained in:
Hector Martin 2025-04-01 10:17:13 +01:00 committed by Manivannan Sadhasivam
parent 3f1ccd6e85
commit 4e639f11d6
1 changed files with 21 additions and 0 deletions
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21
drivers/pci/controller/pcie-apple.c
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@ -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 },
{ }
};