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driver: net: fsl-mc: Update calculation of MC RAM 

Since the reserved RAM is tracked by gd->arch.resv_ram, calculation
of MC memory blocks can be simplified. The MC RAM is guaranteed to be
aligned by the reservation process.

Signed-off-by: York Sun <york.sun@nxp.com>
CC: Priyanka Jain <priyanka.jain@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
This commit is contained in:
York Sun 2017-03-06 09:02:29 -08:00
parent 36cc0de0b9
commit 437858b620
1 changed files with 8 additions and 51 deletions
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59
drivers/net/fsl-mc/mc.c
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@ -154,48 +154,6 @@ int parse_mc_firmware_fit_image(u64 mc_fw_addr,
}
#endif
/*
* Calculates the values to be used to specify the address range
* for the MC private DRAM block, in the MCFBALR/MCFBAHR registers.
* It returns the highest 512MB-aligned address within the given
* address range, in '*aligned_base_addr', and the number of 256 MiB
* blocks in it, in 'num_256mb_blocks'.
*/
static int calculate_mc_private_ram_params(u64 mc_private_ram_start_addr,
size_t mc_ram_size,
u64 *aligned_base_addr,
u8 *num_256mb_blocks)
{
u64 addr;
u16 num_blocks;
if (mc_ram_size % MC_RAM_SIZE_ALIGNMENT != 0) {
printf("fsl-mc: ERROR: invalid MC private RAM size (%lu)\n",
mc_ram_size);
return -EINVAL;
}
num_blocks = mc_ram_size / MC_RAM_SIZE_ALIGNMENT;
if (num_blocks < 1 || num_blocks > 0xff) {
printf("fsl-mc: ERROR: invalid MC private RAM size (%lu)\n",
mc_ram_size);
return -EINVAL;
}
addr = (mc_private_ram_start_addr + mc_ram_size - 1) &
MC_RAM_BASE_ADDR_ALIGNMENT_MASK;
if (addr < mc_private_ram_start_addr) {
printf("fsl-mc: ERROR: bad start address %#llx\n",
mc_private_ram_start_addr);
return -EFAULT;
}
*aligned_base_addr = addr;
*num_256mb_blocks = num_blocks;
return 0;
}
static int mc_fixup_dpc_mac_addr(void *blob, int noff, int dpmac_id,
struct eth_device *eth_dev)
{
@ -550,17 +508,16 @@ int mc_init(u64 mc_fw_addr, u64 mc_dpc_addr)
size_t raw_image_size = 0;
#endif
struct mc_version mc_ver_info;
u64 mc_ram_aligned_base_addr;
u8 mc_ram_num_256mb_blocks;
size_t mc_ram_size = mc_get_dram_block_size();
error = calculate_mc_private_ram_params(mc_ram_addr,
mc_ram_size,
&mc_ram_aligned_base_addr,
&mc_ram_num_256mb_blocks);
if (error != 0)
mc_ram_num_256mb_blocks = mc_ram_size / MC_RAM_SIZE_ALIGNMENT;
if (mc_ram_num_256mb_blocks < 1 || mc_ram_num_256mb_blocks > 0xff) {
error = -EINVAL;
printf("fsl-mc: ERROR: invalid MC private RAM size (%lu)\n",
mc_ram_size);
goto out;
}
/*
* Management Complex cores should be held at reset out of POR.
@ -602,11 +559,11 @@ int mc_init(u64 mc_fw_addr, u64 mc_dpc_addr)
/*
* Tell MC what is the address range of the DRAM block assigned to it:
*/
reg_mcfbalr = (u32)mc_ram_aligned_base_addr |
reg_mcfbalr = (u32)mc_ram_addr |
(mc_ram_num_256mb_blocks - 1);
out_le32(&mc_ccsr_regs->reg_mcfbalr, reg_mcfbalr);
out_le32(&mc_ccsr_regs->reg_mcfbahr,
(u32)(mc_ram_aligned_base_addr >> 32));
(u32)(mc_ram_addr >> 32));
out_le32(&mc_ccsr_regs->reg_mcfapr, FSL_BYPASS_AMQ);
/*