nathan/Chromebook-Device-Nyan-NVIDIA-Tegra-K1-T124-Upstream-Linux-3.10-LTS-Kernel
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Updated from Linux LTS 3.10.18 to 3.10.19

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Nathan
2025-04-07 00:58:18 -05:00
parent 2c3b156896
commit f44b345fa9
76 changed files with 679 additions and 234 deletions
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41
drivers/ntb/ntb_hw.c
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@@ -78,6 +78,8 @@ enum {
BWD_HW,
};
static struct dentry *debugfs_dir;
/* Translate memory window 0,1 to BAR 2,4 */
#define MW_TO_BAR(mw) (mw * 2 + 2)
@@ -531,9 +533,9 @@ static int ntb_xeon_setup(struct ntb_device *ndev)
}
if (val & SNB_PPD_DEV_TYPE)
ndev->dev_type = NTB_DEV_DSD;
else
ndev->dev_type = NTB_DEV_USD;
else
ndev->dev_type = NTB_DEV_DSD;
ndev->reg_ofs.pdb = ndev->reg_base + SNB_PDOORBELL_OFFSET;
ndev->reg_ofs.pdb_mask = ndev->reg_base + SNB_PDBMSK_OFFSET;
@@ -547,7 +549,7 @@ static int ntb_xeon_setup(struct ntb_device *ndev)
if (ndev->conn_type == NTB_CONN_B2B) {
ndev->reg_ofs.sdb = ndev->reg_base + SNB_B2B_DOORBELL_OFFSET;
ndev->reg_ofs.spad_write = ndev->reg_base + SNB_B2B_SPAD_OFFSET;
ndev->limits.max_spads = SNB_MAX_SPADS;
ndev->limits.max_spads = SNB_MAX_B2B_SPADS;
} else {
ndev->reg_ofs.sdb = ndev->reg_base + SNB_SDOORBELL_OFFSET;
ndev->reg_ofs.spad_write = ndev->reg_base + SNB_SPAD_OFFSET;
@@ -644,10 +646,16 @@ static int ntb_device_setup(struct ntb_device *ndev)
rc = -ENODEV;
}
if (rc)
return rc;
dev_info(&ndev->pdev->dev, "Device Type = %s\n",
ndev->dev_type == NTB_DEV_USD ? "USD/DSP" : "DSD/USP");
/* Enable Bus Master and Memory Space on the secondary side */
writew(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, ndev->reg_ofs.spci_cmd);
return rc;
return 0;
}
static void ntb_device_free(struct ntb_device *ndev)
@@ -992,6 +1000,28 @@ static void ntb_free_callbacks(struct ntb_device *ndev)
kfree(ndev->db_cb);
}
static void ntb_setup_debugfs(struct ntb_device *ndev)
{
if (!debugfs_initialized())
return;
if (!debugfs_dir)
debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL);
ndev->debugfs_dir = debugfs_create_dir(pci_name(ndev->pdev),
debugfs_dir);
}
static void ntb_free_debugfs(struct ntb_device *ndev)
{
debugfs_remove_recursive(ndev->debugfs_dir);
if (debugfs_dir && simple_empty(debugfs_dir)) {
debugfs_remove_recursive(debugfs_dir);
debugfs_dir = NULL;
}
}
static int ntb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct ntb_device *ndev;
@@ -1004,6 +1034,7 @@ static int ntb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ndev->pdev = pdev;
ndev->link_status = NTB_LINK_DOWN;
pci_set_drvdata(pdev, ndev);
ntb_setup_debugfs(ndev);
rc = pci_enable_device(pdev);
if (rc)
@@ -1100,6 +1131,7 @@ err2:
err1:
pci_disable_device(pdev);
err:
ntb_free_debugfs(ndev);
kfree(ndev);
dev_err(&pdev->dev, "Error loading %s module\n", KBUILD_MODNAME);
@@ -1129,6 +1161,7 @@ static void ntb_pci_remove(struct pci_dev *pdev)
iounmap(ndev->reg_base);
pci_release_selected_regions(pdev, NTB_BAR_MASK);
pci_disable_device(pdev);
ntb_free_debugfs(ndev);
kfree(ndev);
}