8ee2bf9ab7
The davinci EMAC peripheral is also available on other TI platforms -notably TI AM3517 SoC. This patch modifies the config option and the platform structure header files so that the driver can be reused on non-davinci platforms as well. Signed-off-by: Sriramakrishnan <srk@ti.com> Acked-by: Chaithrika U S <chaithrika@ti.com> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/*
|
|
* Code commons to all DaVinci SoCs.
|
|
*
|
|
* Author: Mark A. Greer <mgreer@mvista.com>
|
|
*
|
|
* 2009 (c) MontaVista Software, Inc. This file is licensed under
|
|
* the terms of the GNU General Public License version 2. This program
|
|
* is licensed "as is" without any warranty of any kind, whether express
|
|
* or implied.
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/io.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/davinci_emac.h>
|
|
|
|
#include <asm/tlb.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include <mach/common.h>
|
|
#include <mach/cputype.h>
|
|
|
|
#include "clock.h"
|
|
|
|
struct davinci_soc_info davinci_soc_info;
|
|
EXPORT_SYMBOL(davinci_soc_info);
|
|
|
|
void __iomem *davinci_intc_base;
|
|
int davinci_intc_type;
|
|
|
|
void davinci_get_mac_addr(struct memory_accessor *mem_acc, void *context)
|
|
{
|
|
char *mac_addr = davinci_soc_info.emac_pdata->mac_addr;
|
|
off_t offset = (off_t)context;
|
|
|
|
/* Read MAC addr from EEPROM */
|
|
if (mem_acc->read(mem_acc, mac_addr, offset, ETH_ALEN) == ETH_ALEN)
|
|
pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
|
|
}
|
|
|
|
static struct davinci_id * __init davinci_get_id(u32 jtag_id)
|
|
{
|
|
int i;
|
|
struct davinci_id *dip;
|
|
u8 variant = (jtag_id & 0xf0000000) >> 28;
|
|
u16 part_no = (jtag_id & 0x0ffff000) >> 12;
|
|
|
|
for (i = 0, dip = davinci_soc_info.ids; i < davinci_soc_info.ids_num;
|
|
i++, dip++)
|
|
/* Don't care about the manufacturer right now */
|
|
if ((dip->part_no == part_no) && (dip->variant == variant))
|
|
return dip;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
void __init davinci_common_init(struct davinci_soc_info *soc_info)
|
|
{
|
|
int ret;
|
|
struct davinci_id *dip;
|
|
|
|
if (!soc_info) {
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
memcpy(&davinci_soc_info, soc_info, sizeof(struct davinci_soc_info));
|
|
|
|
if (davinci_soc_info.io_desc && (davinci_soc_info.io_desc_num > 0))
|
|
iotable_init(davinci_soc_info.io_desc,
|
|
davinci_soc_info.io_desc_num);
|
|
|
|
/*
|
|
* Normally devicemaps_init() would flush caches and tlb after
|
|
* mdesc->map_io(), but we must also do it here because of the CPU
|
|
* revision check below.
|
|
*/
|
|
local_flush_tlb_all();
|
|
flush_cache_all();
|
|
|
|
/*
|
|
* We want to check CPU revision early for cpu_is_xxxx() macros.
|
|
* IO space mapping must be initialized before we can do that.
|
|
*/
|
|
davinci_soc_info.jtag_id = __raw_readl(davinci_soc_info.jtag_id_base);
|
|
|
|
dip = davinci_get_id(davinci_soc_info.jtag_id);
|
|
if (!dip) {
|
|
ret = -EINVAL;
|
|
pr_err("Unknown DaVinci JTAG ID 0x%x\n",
|
|
davinci_soc_info.jtag_id);
|
|
goto err;
|
|
}
|
|
|
|
davinci_soc_info.cpu_id = dip->cpu_id;
|
|
pr_info("DaVinci %s variant 0x%x\n", dip->name, dip->variant);
|
|
|
|
if (davinci_soc_info.cpu_clks) {
|
|
ret = davinci_clk_init(davinci_soc_info.cpu_clks);
|
|
|
|
if (ret != 0)
|
|
goto err;
|
|
}
|
|
|
|
davinci_intc_base = davinci_soc_info.intc_base;
|
|
davinci_intc_type = davinci_soc_info.intc_type;
|
|
return;
|
|
|
|
err:
|
|
panic("davinci_common_init: SoC Initialization failed\n");
|
|
}
|