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i40e: Ioremap changes 

For future device support we do not want to map the whole CSR space since some
of it is mapped by other drivers with different mapping methods.

Note: As a side effect, the flash region (if exposed through the memory map)
gets unmapped too since it follows the future use region.

Change-ID: Ic729a2eacd692984220b1a415ff4fa0f98ea419a
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
hifive-unleashed-5.1
Anjali Singhai 2015-02-26 16:15:39 +00:00 committed by Jeff Kirsher
parent 5bbc330100
commit 232f47060a
2 changed files with 7 additions and 2 deletions
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1
drivers/net/ethernet/intel/i40e/i40e.h
View File

@ -72,6 +72,7 @@
#define I40E_MAX_NUM_DESCRIPTORS 4096
#define I40E_MAX_REGISTER 0x800000
#define I40E_MAX_CSR_SPACE (4 * 1024 * 1024 - 64 * 1024)
#define I40E_DEFAULT_NUM_DESCRIPTORS 512
#define I40E_REQ_DESCRIPTOR_MULTIPLE 32
#define I40E_MIN_NUM_DESCRIPTORS 64

8
drivers/net/ethernet/intel/i40e/i40e_main.c
View File

@ -9459,6 +9459,7 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
struct i40e_pf *pf;
struct i40e_hw *hw;
static u16 pfs_found;
u32 ioremap_len;
u16 link_status;
int err = 0;
u32 len;
@ -9507,8 +9508,11 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
hw = &pf->hw;
hw->back = pf;
hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
pci_resource_len(pdev, 0));
ioremap_len = min_t(int, pci_resource_len(pdev, 0),
I40E_MAX_CSR_SPACE);
hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
if (!hw->hw_addr) {
err = -EIO;
dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",