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Support for I/O MMU.

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This commit is contained in:
Philip Homburg 2008-02-25 10:19:29 +00:00
parent 668515afe2
commit 404325b193
1 changed files with 53 additions and 4 deletions
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57
drivers/rtl8139/rtl8139.c
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@ -290,6 +290,8 @@ _PROTOTYPE( static void dump_phy, (re_t *rep) );
#endif
_PROTOTYPE( static int rl_handler, (re_t *rep) );
_PROTOTYPE( static void rl_watchdog_f, (timer_t *tp) );
_PROTOTYPE( static void tell_dev, (vir_bytes start, size_t size,
int pci_bus, int pci_dev, int pci_func) );
/* The message used in the main loop is made global, so that rl_watchdog_f()
* can change its message type to fake a HARD_INT message.
@ -757,7 +759,6 @@ re_t *rep;
size_t rx_bufsize, tx_bufsize, tot_bufsize;
phys_bytes buf;
char *mallocbuf;
static struct memory chunk;
int fd, s, i, off;
/* Allocate receive and transmit buffers */
@ -767,8 +768,8 @@ re_t *rep;
rx_bufsize= RX_BUFSIZE;
tot_bufsize= N_TX_BUF*tx_bufsize + rx_bufsize;
/* Now try to allocate a kernel memory buffer. */
chunk.size = tot_bufsize;
if (tot_bufsize % 4096)
tot_bufsize += 4096-(tot_bufsize % 4096);
#define BUF_ALIGNMENT (64*1024)
@ -788,6 +789,9 @@ re_t *rep;
buf += BUF_ALIGNMENT - off;
}
tell_dev((vir_bytes)mallocbuf, tot_bufsize, rep->re_pcibus,
rep->re_pcidev, rep->re_pcifunc);
for (i= 0; i<N_TX_BUF; i++)
{
rep->re_tx[i].ret_buf= buf;
@ -1457,7 +1461,7 @@ int from_int;
(vir_bytes) rep->v_re_rx_buf+o, s, D);
if (cps != OK)
panic(__FILE__,
"rl_readv_s: sys_vircopy failed",
"rl_readv_s: sys_safecopyto failed",
cps);
}
@ -3065,6 +3069,51 @@ dpeth_t *dep;
}
#endif
PRIVATE void tell_dev(buf, size, pci_bus, pci_dev, pci_func)
vir_bytes buf;
size_t size;
int pci_bus;
int pci_dev;
int pci_func;
{
int r;
endpoint_t dev_e;
u32_t u32;
message m;
r= ds_retrieve_u32("amddev", &u32);
if (r != OK)
{
printf(
"rtl8139`tell_dev: ds_retrieve_u32 failed for 'amddev': %d\n",
r);
return;
}
dev_e= u32;
m.m_type= IOMMU_MAP;
m.m2_i1= pci_bus;
m.m2_i2= pci_dev;
m.m2_i3= pci_func;
m.m2_l1= buf;
m.m2_l2= size;
r= sendrec(dev_e, &m);
if (r != OK)
{
printf("rtl8139`tell_dev: sendrec to %d failed: %d\n",
dev_e, r);
return;
}
if (m.m_type != OK)
{
printf("rtl8139`tell_dev: dma map request failed: %d\n",
m.m_type);
return;
}
}
/*
* $PchId: rtl8139.c,v 1.3 2003/09/11 14:15:15 philip Exp $
*/