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implemented pci stubs

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This commit is contained in:
Marcel Lütke Dreimann
2024-10-02 17:13:06 +02:00
parent 65bd5f5ca3
commit e076a8a99c
1 changed files with 108 additions and 14 deletions
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122
repos/pc/src/driver/nic/pc/lx_emul.c
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@@ -17,6 +17,72 @@
unsigned long __FIXADDR_TOP = 0xfffff000;
const unsigned char pci_cfg[] = {
0x86, 0x80, 0x21, 0x15, // 00h
0x46, 0x05, 0x10, 0x00, // 04h
0x01, 0x00, 0x00, 0x02, // 08h
0x08, 0x00, 0x80, 0x00, // 0Ch
0x00, 0x00, 0xb0, 0xb2, // 10h
0x00, 0x00, 0x00, 0x00, // 14h
0x00, 0x00, 0x00, 0x00, // 18h
0x00, 0xc0, 0xe0, 0xb2, // 1Ch
0x00, 0x00, 0x00, 0x00, // 20h
0x00, 0x00, 0x00, 0x00, // 24h
0x00, 0x00, 0x00, 0x00, // 28h
0x86, 0x80, 0x01, 0x50, // 2Ch
0x00, 0x00, 0xd8, 0xb2, // 30h
0x40, 0x00, 0x00, 0x00, // 34h
0x00, 0x00, 0x00, 0x00, // 38h
0x0b, 0x01, 0x00, 0x00, // 3Ch
0x01, 0x50, 0x23, 0xc8, // 40h
0x08, 0x20, 0x00, 0x00, // 44h
0x00, 0x00, 0x00, 0x00, // 48h
0x00, 0x00, 0x00, 0x00, // 4Ch
0x05, 0x70, 0x80, 0x01, // 50h
0x00, 0x00, 0x00, 0x00, // 54h
0x00, 0x00, 0x00, 0x00, // 58h
0x00, 0x00, 0x00, 0x00, // 5Ch
0x00, 0x00, 0x00, 0x00, // 60h
0x00, 0x00, 0x00, 0x00, // 64h
0x00, 0x00, 0x00, 0x00, // 68h
0x00, 0x00, 0x00, 0x00, // 6Ch
0x11, 0xa0, 0x09, 0x80, // 70h
0x03, 0x00, 0x00, 0x00, // 74h
0x03, 0x20, 0x00, 0x00, // 78h
0x00, 0x00, 0x00, 0x00, // 7Ch
0x00, 0x00, 0x00, 0x00, // 80h
0x00, 0x00, 0x00, 0x00, // 84h
0x00, 0x00, 0x00, 0x00, // 88h
0x00, 0x00, 0x00, 0x00, // 8Ch
0x00, 0x00, 0x00, 0x00, // 90h
0x00, 0x00, 0x00, 0x00, // 94h
0x00, 0x00, 0x00, 0x00, // 98h
0xff, 0xff, 0xff, 0xff, // 9Ch
0x10, 0xe0, 0x02, 0x00, // A0h
0xc2, 0x8c, 0x00, 0x10, // A4h
0x54, 0x28, 0x19, 0x00, // A8h
0x42, 0xec, 0x42, 0x04, // ACh
0x40, 0x00, 0x42, 0x10, // B0h
0x00, 0x00, 0x00, 0x00, // B4h
0x00, 0x00, 0x00, 0x00, // B8h
0x00, 0x00, 0x00, 0x00, // BCh
0x00, 0x00, 0x00, 0x00, // C0h
0x1f, 0x08, 0x00, 0x00, // C4h
0x09, 0x04, 0x00, 0x00, // C8h
0x00, 0x00, 0x00, 0x00, // CCh
0x02, 0x00, 0x00, 0x00, // D0h
0x00, 0x00, 0x00, 0x00, // D4h
0x00, 0x00, 0x00, 0x00, // D8h
0x00, 0x00, 0x00, 0x00, // DCh
0x03, 0x00, 0xac, 0x80, // E0h
0x78, 0x00, 0x78, 0x00, // E4h
0x00, 0x00, 0x00, 0x00, // E8h
0x00, 0x00, 0x00, 0x00, // ECh
0x00, 0x00, 0x00, 0x00, // F0h
0x00, 0x00, 0x00, 0x00, // F4h
0x00, 0x00, 0x00, 0x00, // F8h
0x00, 0x00, 0x00, 0x00, // FCh
};
#include <linux/uaccess.h>
@@ -91,6 +157,8 @@ void __iomem * pci_ioremap_bar(struct pci_dev * pdev, int bar)
int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val)
{
u16* tmp;
switch (where) {
case PCI_COMMAND:
*val = 0x7;
@@ -118,23 +186,31 @@ int pci_read_config_word(const struct pci_dev *dev, int where, u16 *val)
return 0;
};
printk("%s: unexpected read at %x\n", __func__, where);
PCI_SET_ERROR_RESPONSE(val);;
return PCIBIOS_FUNC_NOT_SUPPORTED;
printk("Unsupervised pci_read_config_word at %x\n", where);
tmp = (u16*)&pci_cfg[where];
*val = *tmp;
return 0;
//PCI_SET_ERROR_RESPONSE(val);;
//return PCIBIOS_FUNC_NOT_SUPPORTED;
}
static inline int igb_pci_pcie_cap(struct pci_dev *dev)
{
return pci_cfg[PCI_CAPABILITY_LIST];
}
int pcie_capability_read_word(struct pci_dev *dev, int pos, u16 *val)
{
printk("%s: unsupported pos=%x\n", __func__, pos);
PCI_SET_ERROR_RESPONSE(val);;
return PCIBIOS_FUNC_NOT_SUPPORTED;
return pci_read_config_word(dev, igb_pci_pcie_cap(dev) + pos, val);
}
int pcie_capability_write_word(struct pci_dev * dev, int pos, u16 val)
{
printk("%s: unsupported pos=%x\n", __func__, pos);
return PCIBIOS_FUNC_NOT_SUPPORTED;
printk("Ignoring PCI CAP write (pos=%x,val=%d)\n", pos, val);
return 0;
}
@@ -142,7 +218,7 @@ int pcie_capability_clear_and_set_word_unlocked(struct pci_dev *dev, int pos, u1
{
printk("%s: unsupported pos=%x\n", __func__, pos);
return PCIBIOS_FUNC_NOT_SUPPORTED;
}
}
int pcie_capability_clear_and_set_word_locked(struct pci_dev *dev, int pos, u16 clear, u16 set)
@@ -315,7 +391,7 @@ struct nlattr *nla_find(const struct nlattr *head, int len, int attrtype)
void *vmalloc_node(unsigned long size, int node)
{
printk("%s: unsupported size=%d, node=%d\n", __func__, size, node);
printk("%s: unsupported size=%lu, node=%d\n", __func__, size, node);
return NULL;
}
@@ -377,7 +453,7 @@ int flow_block_cb_setup_simple(struct flow_block_offload *f,
int i2c_bit_add_bus(struct i2c_adapter *adap)
{
printk("%s: unsupported\n", __func__);
printk("%s: unsupported\n", __func__); // TODO: this one
return -ENODEV;
}
@@ -418,13 +494,31 @@ void __iomem *pci_iomap_range(struct pci_dev *dev,
unsigned long offset,
unsigned long maxlen)
{
printk("%s: unsupported\n", __func__);
return NULL;
struct resource *r;
unsigned long phys_addr;
unsigned long size;
if (!dev || bar > 5) {
printk("%s:%d: invalid request for dev: %p bar: %d\n",
__func__, __LINE__, dev, bar);
return NULL;
}
printk("pci_iomap: request for dev: %s bar: %d\n", dev_name(&dev->dev), bar);
r = &dev->resource[bar];
phys_addr = r->start;
size = r->end - r->start;
if (!phys_addr || !size)
return NULL;
return lx_emul_io_mem_map(phys_addr, size);
}
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
{
printk("%s: unsupported\n", __func__);
return pci_iomap_range(dev, bar, 0, maxlen);
}