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hv: pci: use ECAM to access PCIe Configuration Space

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Use Enhanced Configuration Access Mechanism (MMIO) instead of PCI-compatible
Configuration Mechanism (IO port) to access  PCIe Configuration Space
PCI-compatible Configuration Mechanism (IO port) access is used for UART in
debug version.

Tracked-On: #3475
Signed-off-by: Li Fei1 <fei1.li@intel.com>
This commit is contained in:
Li Fei1
2019-12-05 19:35:23 +08:00
committed by wenlingz
parent 57a362061f
commit 1e50ec8899
6 changed files with 152 additions and 53 deletions
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4
hypervisor/include/debug/uart16550.h
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@@ -7,6 +7,8 @@
#ifndef UART16550_H
#define UART16550_H
#include <pci.h>
/* Register / bit definitions for 16c550 uart */
/*receive buffer register | base+00h, dlab=0b r*/
#define UART16550_RBR 0x00U
@@ -127,6 +129,8 @@
/* UART oscillator clock */
#define UART_CLOCK_RATE 1843200U /* 1.8432 MHz */
extern struct pci_cfg_ops pci_direct_cfg_ops;
void uart16550_init(bool early_boot);
char uart16550_getc(void);
size_t uart16550_puts(const char *buf, uint32_t len);