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u-boot/arch/powerpc/cpu/mpc86xx/mpc8641_serdes.c

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SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0+
powerpc/86xx: Add SERDES support on MPC8641 & MPC8610 Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES. This mimics the code we have in place for the 85xx platforms. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-15 10:52:48 +00:00
/*
* Copyright 2010 Freescale Semiconductor, Inc.
*/
#include <config.h>
#include <common.h>
#include <asm/io.h>
#include <asm/immap_86xx.h>
#include <asm/fsl_serdes.h>
#define SRDS1_MAX_LANES 4
#define SRDS2_MAX_LANES 4
static u32 serdes1_prtcl_map, serdes2_prtcl_map;
static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
[0x2] = {PCIE1, PCIE1, PCIE1, PCIE1},
[0x3] = {PCIE1, PCIE1, PCIE1, PCIE1},
[0x5] = {PCIE1, PCIE1, PCIE1, PCIE1},
[0x6] = {PCIE1, PCIE1, PCIE1, PCIE1},
[0x7] = {PCIE1, PCIE1, PCIE1, PCIE1},
[0xf] = {PCIE1, PCIE1, PCIE1, PCIE1},
};
static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
[0x3] = {PCIE2, PCIE2, PCIE2, PCIE2},
[0x5] = {SRIO1, SRIO1, SRIO1, SRIO1},
[0x6] = {SRIO1, SRIO1, SRIO1, SRIO1},
[0x7] = {SRIO1, SRIO1, SRIO1, SRIO1},
[0x9] = {SRIO1, SRIO1, SRIO1, SRIO1},
[0xa] = {SRIO1, SRIO1, SRIO1, SRIO1},
[0xb] = {SRIO1, SRIO1, SRIO1, SRIO1},
[0xe] = {PCIE2, PCIE2, PCIE2, PCIE2},
[0xf] = {PCIE2, PCIE2, PCIE2, PCIE2},
};
int is_serdes_configured(enum srds_prtcl device)
{
fsl: serdes: ensure accessing the initialized maps of serdes protocol Up to now, the function is_serdes_configed() doesn't check if the map of serdes protocol is initialized before accessing it. The function is_serdes_configed() will get wrong result when it was called before the serdes protocol maps initialized. As the first element of the map isn't used for any device, so use it as the flag to indicate if the map has been initialized. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2016-08-02 11:03:22 +00:00
int ret;
if (!(serdes1_prtcl_map & (1 << NONE)))
fsl_serdes_init();
ret = (1 << device) & serdes1_prtcl_map;
powerpc/86xx: Add SERDES support on MPC8641 & MPC8610 Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES. This mimics the code we have in place for the 85xx platforms. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-15 10:52:48 +00:00
if (ret)
return ret;
fsl: serdes: ensure accessing the initialized maps of serdes protocol Up to now, the function is_serdes_configed() doesn't check if the map of serdes protocol is initialized before accessing it. The function is_serdes_configed() will get wrong result when it was called before the serdes protocol maps initialized. As the first element of the map isn't used for any device, so use it as the flag to indicate if the map has been initialized. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2016-08-02 11:03:22 +00:00
if (!(serdes2_prtcl_map & (1 << NONE)))
fsl_serdes_init();
powerpc/86xx: Add SERDES support on MPC8641 & MPC8610 Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES. This mimics the code we have in place for the 85xx platforms. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-15 10:52:48 +00:00
return (1 << device) & serdes2_prtcl_map;
}
void fsl_serdes_init(void)
{
immap_t *immap = (immap_t *) CONFIG_SYS_CCSRBAR;
ccsr_gur_t *gur = &immap->im_gur;
u32 pordevsr = in_be32(&gur->pordevsr);
u32 srds_cfg = (pordevsr & MPC8641_PORDEVSR_IO_SEL) >>
MPC8641_PORDEVSR_IO_SEL_SHIFT;
int lane;
fsl: serdes: ensure accessing the initialized maps of serdes protocol Up to now, the function is_serdes_configed() doesn't check if the map of serdes protocol is initialized before accessing it. The function is_serdes_configed() will get wrong result when it was called before the serdes protocol maps initialized. As the first element of the map isn't used for any device, so use it as the flag to indicate if the map has been initialized. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2016-08-02 11:03:22 +00:00
if (serdes1_prtcl_map & (1 << NONE) &&
serdes2_prtcl_map & (1 << NONE))
return;
powerpc/86xx: Add SERDES support on MPC8641 & MPC8610 Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES. This mimics the code we have in place for the 85xx platforms. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-15 10:52:48 +00:00
debug("PORDEVSR[IO_SEL_SRDS] = %x\n", srds_cfg);
powerpc: mpc85xx/mpc86xx: Fix off-by-one boundary checking with ARRAY_SIZE If a variable is used as array subscript, it's valid value range is 0 ... ARRAY_SIZE -1. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-05-26 07:00:30 +00:00
if (srds_cfg >= ARRAY_SIZE(serdes1_cfg_tbl)) {
powerpc/86xx: Add SERDES support on MPC8641 & MPC8610 Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES. This mimics the code we have in place for the 85xx platforms. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-15 10:52:48 +00:00
printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
return;
}
for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds_cfg][lane];
serdes1_prtcl_map |= (1 << lane_prtcl);
}
fsl: serdes: ensure accessing the initialized maps of serdes protocol Up to now, the function is_serdes_configed() doesn't check if the map of serdes protocol is initialized before accessing it. The function is_serdes_configed() will get wrong result when it was called before the serdes protocol maps initialized. As the first element of the map isn't used for any device, so use it as the flag to indicate if the map has been initialized. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2016-08-02 11:03:22 +00:00
/* Set the first bit to indicate serdes has been initialized */
serdes1_prtcl_map |= (1 << NONE);
powerpc: mpc85xx/mpc86xx: Fix off-by-one boundary checking with ARRAY_SIZE If a variable is used as array subscript, it's valid value range is 0 ... ARRAY_SIZE -1. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Andy Fleming <afleming@freescale.com>
2013-05-26 07:00:30 +00:00
if (srds_cfg >= ARRAY_SIZE(serdes2_cfg_tbl)) {
powerpc/86xx: Add SERDES support on MPC8641 & MPC8610 Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES. This mimics the code we have in place for the 85xx platforms. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-15 10:52:48 +00:00
printf("Invalid PORDEVSR[IO_SEL_SRDS] = %d\n", srds_cfg);
return;
}
for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds_cfg][lane];
serdes2_prtcl_map |= (1 << lane_prtcl);
}
fsl: serdes: ensure accessing the initialized maps of serdes protocol Up to now, the function is_serdes_configed() doesn't check if the map of serdes protocol is initialized before accessing it. The function is_serdes_configed() will get wrong result when it was called before the serdes protocol maps initialized. As the first element of the map isn't used for any device, so use it as the flag to indicate if the map has been initialized. Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com> Reviewed-by: York Sun <york.sun@nxp.com>
2016-08-02 11:03:22 +00:00
/* Set the first bit to indicate serdes has been initialized */
serdes2_prtcl_map |= (1 << NONE);
powerpc/86xx: Add SERDES support on MPC8641 & MPC8610 Add the ability to determine if a given IP block connected on SERDES is configured. This is useful for things like PCIe and SRIO since they are only ever connected on SERDES. This mimics the code we have in place for the 85xx platforms. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-12-15 10:52:48 +00:00
}
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