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external_code/nvme: enable PCIe bus master and disable INTx irqs

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It allows the controller to issue memory read/writes (the bus master
enable bit) and disables the ability to generate INTx interrupts which
won't be serviced.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I3b041f1ea7c2bc275b609afcc3d1e4f655aee4c5
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6669
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Konrad Sztyber 2021-02-18 11:51:13 +01:00 committed by Tomasz Zawadzki
parent ad9ccbbf52
commit 7da17fb378
1 changed files with 7 additions and 0 deletions
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7
test/external_code/nvme/nvme.c
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@ -173,6 +173,7 @@ pcie_enum_cb(void *ctx, struct spdk_pci_device *pci_dev)
TAILQ_HEAD(, nvme_ctrlr) *ctrlrs = ctx;
char addr[32] = {};
uint64_t phys_addr, size;
uint16_t cmd_reg;
void *reg_addr;
spdk_pci_addr_fmt(addr, sizeof(addr), &pci_dev->addr);
@ -198,6 +199,12 @@ pcie_enum_cb(void *ctx, struct spdk_pci_device *pci_dev)
ctrlr->pci_device = pci_dev;
ctrlr->regs = (volatile struct spdk_nvme_registers *)reg_addr;
/* Enable PCI busmaster and disable INTx */
spdk_pci_device_cfg_read16(pci_dev, &cmd_reg, 4);
cmd_reg |= 0x404;
spdk_pci_device_cfg_write16(pci_dev, cmd_reg, 4);
TAILQ_INSERT_TAIL(ctrlrs, ctrlr, tailq);
return 0;