Commit 7da17fb3 authored by Konrad Sztyber's avatar Konrad Sztyber Committed by Tomasz Zawadzki
Browse files

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



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: default avatarKonrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I3b041f1ea7c2bc275b609afcc3d1e4f655aee4c5
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6669


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarBen Walker <benjamin.walker@intel.com>
parent ad9ccbbf

test/external_code/nvme/nvme.c

+7 −0
Original line number Diff line number Diff line
@@ -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;