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misc: mods: update MODS kernel driver to 4.1

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Change-Id: I56377b85ff0909dba419c8e3f6df16c9302d6dc5
Signed-off-by: Chris Dragan <kdragan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2456573
Reviewed-by: svcguardwords <svcguardwords@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Chris Dragan
2020-12-08 01:45:00 -08:00
committed by Laxman Dewangan
parent 125e88df0a
commit a51241efac
6 changed files with 153 additions and 28 deletions
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59
drivers/misc/mods/mods_pci.c
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@@ -20,8 +20,10 @@
#include "mods_internal.h"
#include <linux/device.h>
#include <linux/io.h>
#include <linux/fs.h>
#include <linux/pci.h>
#if defined(MODS_HAS_DMA_OPS)
#include <linux/dma-mapping.h>
#endif
@@ -921,8 +923,11 @@ int esc_mods_pci_set_dma_mask(struct mods_client *client,
int esc_mods_pci_reset_function(struct mods_client *client,
struct mods_pci_dev_2 *pcidev)
{
#if defined(MODS_HAS_FLR_SUPPORT)
int err;
struct pci_dev *dev;
u32 cap;
const struct pci_error_handlers *err_handler;
LOG_ENT();
@@ -938,14 +943,62 @@ int esc_mods_pci_reset_function(struct mods_client *client,
return err;
}
err = pci_reset_function(dev);
if (unlikely(err))
cl_error("pci_reset_function failed on dev %04x:%02x:%02x.%x\n",
pcie_capability_read_dword(dev, PCI_EXP_DEVCAP, &cap);
if ((dev->dev_flags & PCI_DEV_FLAGS_NO_FLR_RESET) ||
!(cap & PCI_EXP_DEVCAP_FLR)) {
cl_error(
"function level reset not supported on dev %04x:%02x:%02x.%x\n",
pcidev->domain,
pcidev->bus,
pcidev->device,
pcidev->function);
err = -ENOTTY;
goto error;
}
pci_cfg_access_lock(dev);
device_lock(&dev->dev);
err_handler = dev->driver ? dev->driver->err_handler : NULL;
if (err_handler && err_handler->reset_prepare)
err_handler->reset_prepare(dev);
pci_set_power_state(dev, PCI_D0);
pci_save_state(dev);
pci_write_config_word(dev, PCI_COMMAND, PCI_COMMAND_INTX_DISABLE);
#if defined(MODS_PCIE_FLR_HAS_ERR)
err = pcie_flr(dev);
if (unlikely(err))
cl_error("pcie_flr failed on dev %04x:%02x:%02x.%x\n",
pcidev->domain,
pcidev->bus,
pcidev->device,
pcidev->function);
#else
pcie_flr(dev);
#endif
if (!err)
cl_info("pcie_flr succeeded on dev %04x:%02x:%02x.%x\n",
pcidev->domain,
pcidev->bus,
pcidev->device,
pcidev->function);
pci_restore_state(dev);
if (err_handler && err_handler->reset_done)
err_handler->reset_done(dev);
device_unlock(&dev->dev);
pci_cfg_access_unlock(dev);
error:
pci_dev_put(dev);
LOG_EXT();
return err;
#else
return -EINVAL;
#endif
}