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pcie mbox:add sio mbox pcie host driver

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Signed-off-by: ryan_chen <ryan_chen@aspeedtech.com>
Change-Id: Id652fd15b4e896e991e58d0408d7d58e136cfd0e
This commit is contained in:
ryan_chen 2022-05-17 18:47:15 +08:00 committed by Ryan Chen
parent a552397e43
commit 01e5cbf181
1 changed files with 45 additions and 2 deletions
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47
drivers/soc/aspeed/aspeed-host-bmc-dev.c
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@ -74,14 +74,15 @@ struct aspeed_pci_bmc_dev {
wait_queue_head_t rx_wait0;
wait_queue_head_t rx_wait1;
void *serial_priv;
void __iomem *sio_mbox_reg;
int sio_mbox_irq;
u8 IntLine;
int legency_irq;
};
#define HOST_BMC_QUEUE_SIZE (16 * 4)
#define PCIE_DEVICE_SIO_ADDR (0x2E * 4)
#define BMC_MULTI_MSI 32
#define DRIVER_NAME "ASPEED BMC DEVICE"
@ -235,12 +236,25 @@ irqreturn_t aspeed_pci_host_bmc_device_interrupt(int irq, void *dev_id)
}
irqreturn_t aspeed_pci_host_mbox_interrupt(int irq, void *dev_id)
{
struct aspeed_pci_bmc_dev *pci_bmc_device = dev_id;
u32 isr = readl(pci_bmc_device->sio_mbox_reg + 0x94);
if (isr & BIT(7))
writel(BIT(7), pci_bmc_device->sio_mbox_reg + 0x94);
return IRQ_HANDLED;
}
#define BMC_MSI_IDX_BASE 4
static int aspeed_pci_host_bmc_device_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct uart_8250_port uart[VUART_MAX_PARMS];
struct aspeed_pci_bmc_dev *pci_bmc_dev;
struct device *dev = &pdev->dev;
void __iomem *pcie_sio_decode_addr;
u16 config_cmd_val;
int nr_entries;
int rc = 0;
@ -372,6 +386,35 @@ static int aspeed_pci_host_bmc_device_probe(struct pci_dev *pdev, const struct p
goto out_unreg;
}
/* setup mbox */
pcie_sio_decode_addr = pci_bmc_dev->msg_bar_reg + PCIE_DEVICE_SIO_ADDR;
writel(0xaa, pcie_sio_decode_addr);
writel(0xa5, pcie_sio_decode_addr);
writel(0xa5, pcie_sio_decode_addr);
writel(0x07, pcie_sio_decode_addr);
writel(0x0e, pcie_sio_decode_addr + 0x04);
/* disable */
writel(0x30, pcie_sio_decode_addr);
writel(0x00, pcie_sio_decode_addr + 0x04);
/* set decode address 0x100 */
writel(0x60, pcie_sio_decode_addr);
writel(0x01, pcie_sio_decode_addr + 0x04);
writel(0x61, pcie_sio_decode_addr);
writel(0x00, pcie_sio_decode_addr + 0x04);
/* enable */
writel(0x30, pcie_sio_decode_addr);
writel(0x01, pcie_sio_decode_addr + 0x04);
pci_bmc_dev->sio_mbox_reg = pci_bmc_dev->msg_bar_reg + 0x400;
if (pci_bmc_dev->legency_irq)
pci_bmc_dev->sio_mbox_irq = pdev->irq;
else
pci_bmc_dev->sio_mbox_irq = pci_irq_vector(pdev, 0x10 + 9 - BMC_MSI_IDX_BASE);
rc = request_irq(pci_bmc_dev->sio_mbox_irq, aspeed_pci_host_mbox_interrupt, IRQF_SHARED, "ASPEED SIO MBOX", pci_bmc_dev);
if (rc)
pr_err("host bmc device Unable to get IRQ %d\n", rc);
/* setup VUART */
memset(uart, 0, sizeof(uart));