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Date: Thu, 10 Nov 2022 00:25:21 +0200
From: Oleksandr Mazur <oleksandr.mazur@...ision.eu>
To: netdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, edumazet@...gle.com,
davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
maksym.glubokiy@...ision.eu, vadym.kochan@...ision.eu,
tchornyi@...vell.com, mickeyr@...vell.com,
oleksandr.mazur@...ision.eu
Subject: [PATCH 2/3] net: marvell: prestera: pci: add support for AC5X family devices
From: Maksym Glubokiy <maksym.glubokiy@...ision.eu>
Add support for the following AC5x Marvell Prestera PP family devices:
98DX7312M (12x25G / 8x25G + 1x100G);
98DX3500 (24x1G + 6x25G);
98DX3501 (16x1G + 6x10G);
98DX3510 (48x1G + 6x25G);
98DX3520 (24x2.5G + 6x25G);
Known issues:
- FW reload doesn't work (rmmod/modprobe sequence).
Co-developed-by: Vadym Kochan <vadym.kochan@...ision.eu>
Signed-off-by: Vadym Kochan <vadym.kochan@...ision.eu>
Signed-off-by: Maksym Glubokiy <maksym.glubokiy@...ision.eu>
Signed-off-by: Oleksandr Mazur <oleksandr.mazur@...ision.eu>
---
.../ethernet/marvell/prestera/prestera_pci.c | 107 ++++++++++++++++--
1 file changed, 97 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/marvell/prestera/prestera_pci.c b/drivers/net/ethernet/marvell/prestera/prestera_pci.c
index 14639966e53e..9475499069e6 100644
--- a/drivers/net/ethernet/marvell/prestera/prestera_pci.c
+++ b/drivers/net/ethernet/marvell/prestera/prestera_pci.c
@@ -21,6 +21,7 @@
#define PRESTERA_PREV_FW_MIN_VER 0
#define PRESTERA_FW_PATH_FMT "mrvl/prestera/mvsw_prestera_fw-v%u.%u.img"
+#define PRESTERA_FW_ARM64_PATH_FMT "mrvl/prestera/mvsw_prestera_fw_arm64-v%u.%u.img"
#define PRESTERA_FW_HDR_MAGIC 0x351D9D06
#define PRESTERA_FW_DL_TIMEOUT_MS 50000
@@ -187,6 +188,11 @@ struct prestera_fw_regs {
#define PRESTERA_DEV_ID_AC3X_98DX_55 0xC804
#define PRESTERA_DEV_ID_AC3X_98DX_65 0xC80C
#define PRESTERA_DEV_ID_ALDRIN2 0xCC1E
+#define PRESTERA_DEV_ID_98DX7312M 0x981F
+#define PRESTERA_DEV_ID_98DX3500 0x9820
+#define PRESTERA_DEV_ID_98DX3501 0x9826
+#define PRESTERA_DEV_ID_98DX3510 0x9821
+#define PRESTERA_DEV_ID_98DX3520 0x9822
struct prestera_fw_evtq {
u8 __iomem *addr;
@@ -205,6 +211,7 @@ struct prestera_fw {
const struct firmware *bin;
struct workqueue_struct *wq;
struct prestera_device dev;
+ struct pci_dev *pci_dev;
u8 __iomem *ldr_regs;
u8 __iomem *ldr_ring_buf;
u32 ldr_buf_len;
@@ -693,6 +700,20 @@ static int prestera_fw_hdr_parse(struct prestera_fw *fw)
return prestera_fw_rev_check(fw);
}
+static const char *prestera_fw_path_fmt_get(struct prestera_fw *fw)
+{
+ switch (fw->pci_dev->device) {
+ case PRESTERA_DEV_ID_98DX3500:
+ case PRESTERA_DEV_ID_98DX3501:
+ case PRESTERA_DEV_ID_98DX3510:
+ case PRESTERA_DEV_ID_98DX3520:
+ return PRESTERA_FW_ARM64_PATH_FMT;
+
+ default:
+ return PRESTERA_FW_PATH_FMT;
+ }
+}
+
static int prestera_fw_get(struct prestera_fw *fw)
{
int ver_maj = PRESTERA_SUPP_FW_MAJ_VER;
@@ -701,7 +722,7 @@ static int prestera_fw_get(struct prestera_fw *fw)
int err;
pick_fw_ver:
- snprintf(fw_path, sizeof(fw_path), PRESTERA_FW_PATH_FMT,
+ snprintf(fw_path, sizeof(fw_path), prestera_fw_path_fmt_get(fw),
ver_maj, ver_min);
err = request_firmware_direct(&fw->bin, fw_path, fw->dev.dev);
@@ -778,22 +799,56 @@ static int prestera_fw_load(struct prestera_fw *fw)
return err;
}
+static bool prestera_pci_pp_use_bar2(struct pci_dev *pdev)
+{
+ switch (pdev->device) {
+ case PRESTERA_DEV_ID_98DX7312M:
+ case PRESTERA_DEV_ID_98DX3500:
+ case PRESTERA_DEV_ID_98DX3501:
+ case PRESTERA_DEV_ID_98DX3510:
+ case PRESTERA_DEV_ID_98DX3520:
+ return true;
+
+ default:
+ return false;
+ }
+}
+
+static u32 prestera_pci_pp_bar2_offs(struct pci_dev *pdev)
+{
+ if (pci_resource_len(pdev, 2) == 0x1000000)
+ return 0x0;
+ else
+ return (pci_resource_len(pdev, 2) / 2);
+}
+
+static u32 prestera_pci_fw_bar2_offs(struct pci_dev *pdev)
+{
+ if (pci_resource_len(pdev, 2) == 0x1000000)
+ return 0x400000;
+ else
+ return 0x0;
+}
+
static int prestera_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *id)
{
const char *driver_name = dev_driver_string(&pdev->dev);
+ u8 __iomem *mem_addr, *pp_addr = NULL;
struct prestera_fw *fw;
int err;
err = pcim_enable_device(pdev);
- if (err)
- return err;
+ if (err) {
+ dev_err(&pdev->dev, "pci_enable_device failed\n");
+ goto err_pci_enable_device;
+ }
- err = pcim_iomap_regions(pdev, BIT(PRESTERA_PCI_BAR_FW) |
- BIT(PRESTERA_PCI_BAR_PP),
- pci_name(pdev));
- if (err)
- return err;
+ err = pci_request_regions(pdev, driver_name);
+ if (err) {
+ dev_err(&pdev->dev, "pci_request_regions failed\n");
+ goto err_pci_request_regions;
+ }
err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(30));
if (err) {
@@ -801,6 +856,26 @@ static int prestera_pci_probe(struct pci_dev *pdev,
goto err_dma_mask;
}
+ mem_addr = pcim_iomap(pdev, 2, 0);
+ if (!mem_addr) {
+ dev_err(&pdev->dev, "pci mem ioremap failed\n");
+ err = -EIO;
+ goto err_mem_ioremap;
+ }
+
+ /* AC5X devices use second half of BAR2 */
+ if (prestera_pci_pp_use_bar2(pdev)) {
+ pp_addr = mem_addr + prestera_pci_pp_bar2_offs(pdev);
+ mem_addr = mem_addr + prestera_pci_fw_bar2_offs(pdev);
+ } else {
+ pp_addr = pcim_iomap(pdev, 4, 0);
+ if (!pp_addr) {
+ dev_err(&pdev->dev, "pp regs ioremap failed\n");
+ err = -EIO;
+ goto err_pp_ioremap;
+ }
+ }
+
pci_set_master(pdev);
fw = devm_kzalloc(&pdev->dev, sizeof(*fw), GFP_KERNEL);
@@ -809,8 +884,9 @@ static int prestera_pci_probe(struct pci_dev *pdev,
goto err_pci_dev_alloc;
}
- fw->dev.ctl_regs = pcim_iomap_table(pdev)[PRESTERA_PCI_BAR_FW];
- fw->dev.pp_regs = pcim_iomap_table(pdev)[PRESTERA_PCI_BAR_PP];
+ fw->pci_dev = pdev;
+ fw->dev.ctl_regs = mem_addr;
+ fw->dev.pp_regs = pp_addr;
fw->dev.dev = &pdev->dev;
pci_set_drvdata(pdev, fw);
@@ -858,7 +934,12 @@ static int prestera_pci_probe(struct pci_dev *pdev,
prestera_fw_uninit(fw);
err_prestera_fw_init:
err_pci_dev_alloc:
+err_pp_ioremap:
+err_mem_ioremap:
err_dma_mask:
+ pci_release_regions(pdev);
+err_pci_request_regions:
+err_pci_enable_device:
return err;
}
@@ -871,12 +952,18 @@ static void prestera_pci_remove(struct pci_dev *pdev)
pci_free_irq_vectors(pdev);
destroy_workqueue(fw->wq);
prestera_fw_uninit(fw);
+ pci_release_regions(pdev);
}
static const struct pci_device_id prestera_pci_devices[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_AC3X_98DX_55) },
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_AC3X_98DX_65) },
{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_ALDRIN2) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_98DX7312M) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_98DX3500) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_98DX3501) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_98DX3510) },
+ { PCI_DEVICE(PCI_VENDOR_ID_MARVELL, PRESTERA_DEV_ID_98DX3520) },
{ }
};
MODULE_DEVICE_TABLE(pci, prestera_pci_devices);
--
2.17.1
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