newlib/libgloss/sparc_leon/pnpinit_malloc.c

680 lines
16 KiB
C

/*
* Copyright (c) 2011 Aeroflex Gaisler
*
* BSD license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <asm-leon/amba.h>
#undef AMBA_TYPE_AHBIO_ADDR
#include <asm-leon/lambapp.h>
#include <string.h>
#define AMBA_CONF_AREA 0xff000
#define AMBA_AHB_SLAVE_CONF_AREA (1 << 11)
#define AMBA_APB_SLAVES 16
#define DPRINTF(p) printf p
/* Allocate */
struct ambapp_dev_hdr *
ambapp_alloc_dev_struct (int dev_type)
{
int size = sizeof (struct ambapp_dev_hdr);
struct ambapp_dev_hdr *dev;
if (dev_type == DEV_APB_SLV)
{
size += sizeof (struct ambapp_apb_info);
}
else
{
/* AHB */
size += sizeof (struct ambapp_ahb_info);
}
dev = malloc (size);
if (dev == NULL)
return NULL;
memset (dev, 0, size);
dev->devinfo = (void *) (dev + 1);
dev->dev_type = dev_type;
return dev;
}
unsigned int
ambapp_addr_from (struct ambapp_mmap *mmaps, unsigned int address)
{
/* no translation? */
if (!mmaps)
return address;
while (mmaps->size)
{
if ((address >= mmaps->remote_adr)
&& (address <= (mmaps->remote_adr + (mmaps->size - 1))))
{
return (address - mmaps->remote_adr) + mmaps->local_adr;
}
mmaps++;
}
return 1;
}
void
ambapp_ahb_dev_init (unsigned int ioarea,
struct ambapp_mmap *mmaps,
struct ambapp_pnp_ahb *ahb, struct ambapp_dev_hdr *dev)
{
int bar;
struct ambapp_ahb_info *ahb_info;
unsigned int addr, mask, mbar;
/* Setup device struct */
dev->vendor = ambapp_pnp_vendor (ahb->id);
dev->device = ambapp_pnp_device (ahb->id);
ahb_info = dev->devinfo;
ahb_info->ver = ambapp_pnp_ver (ahb->id);
ahb_info->irq = ambapp_pnp_irq (ahb->id);
ahb_info->custom[0] = (unsigned int) ahb->custom[0];
ahb_info->custom[1] = (unsigned int) ahb->custom[1];
ahb_info->custom[2] = (unsigned int) ahb->custom[2];
DPRINTF (("+AHB device %d:%d\n", dev->device, dev->vendor));
/* Memory BARs */
for (bar = 0; bar < 4; bar++)
{
mbar = ahb->mbar[bar];
if (mbar == 0)
{
addr = 0;
mask = 0;
}
else
{
addr = ambapp_pnp_start (mbar);
if (ambapp_pnp_mbar_type (mbar) == AMBA_TYPE_AHBIO)
{
/* AHB I/O area is releative IO_AREA */
addr = AMBA_TYPE_AHBIO_ADDR (addr, ioarea);
mask =
(((unsigned int) (ambapp_pnp_mbar_mask ((~mbar)) << 8) |
0xff)) + 1;
}
else
{
/* AHB memory area, absolute address */
addr = ambapp_addr_from (mmaps, addr);
mask =
(~((unsigned int) (ambapp_pnp_mbar_mask (mbar) << 20))) + 1;
}
}
ahb_info->start[bar] = addr;
ahb_info->mask[bar] = mask;
}
}
void
ambapp_apb_dev_init (unsigned int base,
struct ambapp_mmap *mmaps,
struct ambapp_pnp_apb *apb, struct ambapp_dev_hdr *dev)
{
struct ambapp_apb_info *apb_info;
/* Setup device struct */
dev->vendor = ambapp_pnp_vendor (apb->id);
dev->device = ambapp_pnp_device (apb->id);
apb_info = dev->devinfo;
apb_info->ver = ambapp_pnp_ver (apb->id);
apb_info->irq = ambapp_pnp_irq (apb->id);
apb_info->start = ambapp_pnp_apb_start (apb->iobar, base);
apb_info->mask = ambapp_pnp_apb_mask (apb->iobar);
DPRINTF (("+APB device %d:%d\n", dev->device, dev->vendor));
}
#define MAX_NUM_BUSES 16
void
ambapp_add_scanned_bus (unsigned int *ioareas, unsigned int ioarea)
{
int i;
for (i = 0; i < MAX_NUM_BUSES; i++)
{
if (ioareas[i] == 0)
{
ioareas[i] = ioarea;
return;
}
}
}
int
ambapp_has_been_scanned (unsigned int *ioareas, unsigned int ioarea)
{
int i;
if (!ioareas)
return 0;
for (i = 0; i < MAX_NUM_BUSES; i++)
{
if (ioareas[i] == 0)
{
break;
}
else if (ioareas[i] == ioarea)
{
return 1;
}
}
return 0;
}
int
ambapp_scan (unsigned int ioarea,
struct ambapp_dev_hdr *parent,
struct ambapp_mmap *mmaps,
void *(*memfunc) (void *dest, const void *src, int n),
struct ambapp_dev_hdr **root, void *internal)
{
struct ambapp_pnp_ahb *ahb, ahb_buf;
struct ambapp_pnp_apb *apb, apb_buf;
struct ambapp_dev_hdr *dev, *prev, *prevapb, *apbdev;
struct ambapp_ahb_info *ahb_info;
int maxloops = 64;
unsigned int apbbase, bridge_address;
int i, j;
DPRINTF (("Scan at 0x%08x\n", ioarea));
/* Default to memcpy() */
if (!memfunc)
memfunc = (void *(*)(void *dest, const void *src, int n)) memcpy;
*root = NULL;
if (parent)
{
/* scan first bus for 64 devices, rest for 16 devices */
maxloops = 16;
}
else
{
DPRINTF (("+(malloc:"));
internal = malloc (sizeof (unsigned int) * MAX_NUM_BUSES);
DPRINTF (("0x%x)\n", internal));
if (!internal)
return -1;
memset (internal, 0, sizeof (unsigned int) * MAX_NUM_BUSES);
ambapp_add_scanned_bus (internal, ioarea);
}
prev = parent;
/* AHB MASTERS */
ahb = (struct ambapp_pnp_ahb *) (ioarea | AMBA_CONF_AREA);
for (i = 0; i < maxloops; i++)
{
memfunc (&ahb_buf, ahb, sizeof (struct ambapp_pnp_ahb));
if (ahb_buf.id != 0)
{
/* A AHB device present here */
dev = ambapp_alloc_dev_struct (DEV_AHB_MST);
if (!dev)
return -1;
ambapp_ahb_dev_init (ioarea, mmaps, &ahb_buf, dev);
if (*root == NULL)
*root = dev;
if (prev != parent)
prev->next = dev;
dev->prev = prev;
prev = dev;
}
ahb++;
}
/* AHB SLAVES */
ahb =
(struct ambapp_pnp_ahb *) (ioarea | AMBA_CONF_AREA |
AMBA_AHB_SLAVE_CONF_AREA);
for (i = 0; i < maxloops; i++)
{
memfunc (&ahb_buf, ahb, sizeof (struct ambapp_pnp_ahb));
if (ahb_buf.id != 0)
{
/* A AHB device present here */
dev = ambapp_alloc_dev_struct (DEV_AHB_SLV);
if (!dev)
return -1;
ambapp_ahb_dev_init (ioarea, mmaps, &ahb_buf, dev);
if (prev != parent)
prev->next = dev;
dev->prev = prev;
prev = dev;
/* Is it a AHB/AHB Bridge ? */
if ((dev->device == GAISLER_AHB2AHB)
&& (dev->vendor == VENDOR_GAISLER))
{
/* AHB/AHB Bridge Found, recurse down the Bridge */
ahb_info = dev->devinfo;
if (ahb_info->ver)
{
bridge_address =
ambapp_addr_from (mmaps, ahb_info->custom[1]);
DPRINTF (("+(AHBAHB:0x%x)\n", bridge_address));
/* Makes sure bus only scanned once */
if (ambapp_has_been_scanned (internal, bridge_address) ==
NULL)
{
ambapp_add_scanned_bus (internal, bridge_address);
if (ambapp_scan
(bridge_address, dev, mmaps, memfunc,
&dev->children, internal))
return -1;
}
}
}
else if ((dev->device == GAISLER_APBMST)
&& (dev->vendor == VENDOR_GAISLER))
{
/* AHB/APB Bridge Found, add the APB devices to this AHB Slave's children */
prevapb = dev;
ahb_info = dev->devinfo;
apbbase = ahb_info->start[0];
apb = (struct ambapp_pnp_apb *) (apbbase | AMBA_CONF_AREA);
for (j = 0; j < AMBA_APB_SLAVES; j++)
{
memfunc (&apb_buf, apb, sizeof (struct ambapp_pnp_apb));
if (apb_buf.id)
{
apbdev = ambapp_alloc_dev_struct (DEV_APB_SLV);
if (!dev)
return -1;
ambapp_apb_dev_init (apbbase, mmaps, &apb_buf, apbdev);
if (prevapb != dev)
prevapb->next = apbdev;
else
dev->children = apbdev;
apbdev->prev = prevapb;
prevapb = apbdev;
}
apb++;
}
}
}
ahb++;
}
if (parent == NULL)
{
free (internal);
}
return 0;
}
/* Match search options againt device */
int
ambapp_dev_match_options (struct ambapp_dev_hdr *dev, unsigned int options,
int vendor, int device)
{
if ((((options & (OPTIONS_ALL_DEVS)) == OPTIONS_ALL_DEVS) || /* Match TYPE */
((options & OPTIONS_AHB_MSTS) && (dev->dev_type == DEV_AHB_MST)) || ((options & OPTIONS_AHB_SLVS) && (dev->dev_type == DEV_AHB_SLV)) || ((options & OPTIONS_APB_SLVS) && (dev->dev_type == DEV_APB_SLV))) && ((vendor == -1) || (vendor == dev->vendor)) && /* Match ID */
((device == -1) || (device == dev->device)) && (((options & OPTIONS_ALL) == OPTIONS_ALL) || /* Match Allocated State */
((options &
OPTIONS_FREE)
&& DEV_IS_FREE (dev))
||
((options &
OPTIONS_ALLOCATED)
&&
DEV_IS_ALLOCATED
(dev))))
{
return 1;
}
return 0;
}
/* If device is an APB bridge all devices on the APB bridge is processed */
static int
ambapp_for_each_apb (struct ambapp_dev_hdr *dev,
unsigned int options,
int vendor,
int device, int maxdepth, ambapp_func_t func, void *arg)
{
int index;
struct ambapp_dev_hdr *apbslv;
if (maxdepth < 0)
return 0;
if (dev->children && (dev->children->dev_type == DEV_APB_SLV))
{
/* Found a APB Bridge */
index = 0;
apbslv = dev->children;
while (apbslv)
{
if (ambapp_dev_match_options (apbslv, options, vendor, device) == 1)
{
if (func (apbslv, index, maxdepth, arg) == 1)
return 1; /* Signalled stopped */
}
index++;
apbslv = apbslv->next;
}
}
return 0;
}
/* Traverse the prescanned device information */
int
ambapp_for_each (struct ambapp_dev_hdr *root,
unsigned int options,
int vendor,
int device, int maxdepth, ambapp_func_t func, void *arg)
{
struct ambapp_dev_hdr *dev;
int ahb_slave = 0;
int index;
if (maxdepth < 0)
return 0;
/* Start at device 'root' and process downwards.
*
* Breadth first search, search order
* 1. AHB MSTS
* 2. AHB SLVS
* 3. APB SLVS on primary bus
* 4. AHB/AHB secondary... -> step to 1.
*/
/* AHB MST / AHB SLV */
if (options & (OPTIONS_AHB_MSTS | OPTIONS_AHB_SLVS | OPTIONS_DEPTH_FIRST))
{
index = 0;
dev = root;
while (dev)
{
if ((dev->dev_type == DEV_AHB_SLV) && !ahb_slave)
{
/* First AHB Slave */
ahb_slave = 1;
index = 0;
}
/* Conditions must be fullfilled for function to be called */
if (ambapp_dev_match_options (dev, options, vendor, device) == 1)
{
/* Correct device and vendor ID */
if (func (dev, index, maxdepth, arg) == 1)
return 1; /* Signalled stopped */
}
if ((options & OPTIONS_DEPTH_FIRST) && (options & OPTIONS_APB_SLVS))
{
/* Check is APB bridge, and process all APB Slaves in that case */
if (ambapp_for_each_apb
(dev, options, vendor, device, (maxdepth - 1), func,
arg) == 1)
return 1; /* Signalled stopped */
}
if (options & OPTIONS_DEPTH_FIRST)
{
if (dev->children && (dev->children->dev_type != DEV_APB_SLV))
{
/* Found AHB Bridge, recurse */
if (ambapp_for_each
(dev->children, options, vendor, device, (maxdepth - 1),
func, arg) == 1)
return 1;
}
}
index++;
dev = dev->next;
}
}
/* Find APB Bridges */
if ((options & OPTIONS_APB_SLVS) && !(options & OPTIONS_DEPTH_FIRST))
{
dev = root;
while (dev)
{
/* Check is APB bridge, and process all APB Slaves in that case */
if (ambapp_for_each_apb
(dev, options, vendor, device, (maxdepth - 1), func, arg) == 1)
return 1; /* Signalled stopped */
dev = dev->next;
}
}
/* Find AHB Bridges */
if (!(options & OPTIONS_DEPTH_FIRST))
{
dev = root;
while (dev)
{
if (dev->children && (dev->children->dev_type != DEV_APB_SLV))
{
/* Found AHB Bridge, recurse */
if (ambapp_for_each
(dev->children, options, vendor, device, (maxdepth - 1),
func, arg) == 1)
return 1;
}
dev = dev->next;
}
}
return 0;
}
int
ambapp_alloc_dev (struct ambapp_dev_hdr *dev, void *owner)
{
if (dev->owner)
return -1;
dev->owner = owner;
return 0;
}
void
ambapp_free_dev (struct ambapp_dev_hdr *dev)
{
dev->owner = NULL;
}
struct ambapp_dev_find_match_arg
{
int index;
int count;
int type;
void *dev;
};
/* AMBA PP find routines */
int
ambapp_dev_find_match (struct ambapp_dev_hdr *dev, int index, int maxdepth,
void *arg)
{
struct ambapp_dev_find_match_arg *p = arg;
if (p->index == 0)
{
/* Found controller, stop */
if (p->type == DEV_APB_SLV)
{
*(struct ambapp_apb_info *) p->dev =
*(struct ambapp_apb_info *) dev->devinfo;
p->dev = ((struct ambapp_apb_info *) p->dev) + 1;
}
else
{
*(struct ambapp_ahb_info *) p->dev =
*(struct ambapp_ahb_info *) dev->devinfo;
p->dev = ((struct ambapp_ahb_info *) p->dev) + 1;
}
p->count--;
if (p->count < 1)
return 1;
}
else
{
p->index--;
}
return 0;
}
int
ambapp_find_apbslvs_next (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_apb_info *dev, int index, int maxno)
{
struct ambapp_dev_find_match_arg arg;
arg.index = index;
arg.count = maxno;
arg.type = DEV_APB_SLV; /* APB */
arg.dev = dev;
ambapp_for_each (root, (OPTIONS_ALL | OPTIONS_APB_SLVS), vendor, device, 10,
ambapp_dev_find_match, &arg);
return maxno - arg.count;
}
int
ambapp_find_apbslv (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_apb_info *dev)
{
return ambapp_find_apbslvs_next (root, vendor, device, dev, 0, 1);
}
int
ambapp_find_apbslv_next (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_apb_info *dev, int index)
{
return ambapp_find_apbslvs_next (root, vendor, device, dev, index, 1);
}
int
ambapp_find_apbslvs (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_apb_info *dev, int maxno)
{
return ambapp_find_apbslvs_next (root, vendor, device, dev, 0, maxno);
}
int
ambapp_find_ahbslvs_next (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_ahb_info *dev, int index, int maxno)
{
struct ambapp_dev_find_match_arg arg;
arg.index = index;
arg.count = maxno;
arg.type = DEV_AHB_SLV; /* AHB SLV */
arg.dev = dev;
ambapp_for_each (root, (OPTIONS_ALL | OPTIONS_AHB_SLVS), vendor, device, 10,
ambapp_dev_find_match, &arg);
return maxno - arg.count;
}
int
ambapp_find_ahbslv_next (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_ahb_info *dev, int index)
{
return ambapp_find_ahbslvs_next (root, vendor, device, dev, index, 1);
}
int
ambapp_find_ahbslv (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_ahb_info *dev)
{
return ambapp_find_ahbslvs_next (root, vendor, device, dev, 0, 1);
}
int
ambapp_find_ahbslvs (struct ambapp_dev_hdr *root, int vendor, int device,
struct ambapp_ahb_info *dev, int maxno)
{
return ambapp_find_ahbslvs_next (root, vendor, device, dev, 0, maxno);
}
struct ambapp_dev_hdr *
ambapp_find_parent (struct ambapp_dev_hdr *dev)
{
while (dev->prev)
{
if (dev == dev->prev->children)
{
return dev->prev;
}
dev = dev->prev;
}
return NULL;
}
struct ambapp_dev_hdr *ambapp_root = NULL;
extern unsigned int console;
extern unsigned int rtc;
void
pnpinit (void)
{
struct ambapp_apb_info dev;
int n;
ambapp_scan (LEON3_IO_AREA, NULL, NULL, NULL, &ambapp_root, NULL);
if ((n =
ambapp_find_apbslv (ambapp_root, VENDOR_GAISLER, GAISLER_APBUART,
&dev)) == 1)
{
console = dev.start;
DPRINTF (("Found abuart at 0x%x\n", console));
}
if ((n =
ambapp_find_apbslv (ambapp_root, VENDOR_GAISLER, GAISLER_GPTIMER,
&dev)) == 1)
{
rtc = dev.start + 0x10;
DPRINTF (("Found rtc at 0x%x\n", rtc));
}
}