[BUG] Fix drivers/memory O= build
From: Dave Gerlach <hidden>
Date: 2018-04-09 16:05:37
Also in:
linux-kbuild, linux-omap
Subsystem:
arm port, arm/texas instrument aemif/emif drivers, memory controller drivers, omap2+ support, the rest · Maintainers:
Russell King, Santosh Shilimkar, Krzysztof Kozlowski, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Hi, On 04/07/2018 08:38 AM, Russell King - ARM Linux wrote:
On Sat, Apr 07, 2018 at 11:55:22AM +0900, Masahiro Yamada wrote:quoted
2018-04-07 3:55 GMT+09:00 Russell King - ARM Linux [off-list ref]:quoted
On Fri, Apr 06, 2018 at 11:45:01AM -0700, Santosh Shilimkar wrote:quoted
On 4/6/2018 9:46 AM, Tony Lindgren wrote:quoted
* Russell King - ARM Linux [off-list ref] [180406 03:27]:quoted
When building a kernel with split object directories, the following failure occurs: .../drivers/memory/emif-asm-offsets.c:1:0: fatal error: can't open drivers/memory/emif-asm-offsets.s for writing: No such file or directory compilation terminated. drivers/memory/Makefile.asm-offsets:2: recipe for target 'drivers/memory/emif-asm-offsets.s' failed make[2]: *** [drivers/memory/emif-asm-offsets.s] Error 1 .../Makefile:1060: recipe for target 'arch/arm/mach-omap2' failed make[1]: *** [arch/arm/mach-omap2] Error 2 This prevents any kernel being built that includes decending into arch/arm/mach-omap2 with split object directories. This is a regression.Dave, I presume you're looking into this already?Fix is already posted by 'Anders Roxell [off-list ref]' You are copied on the email Tony.Arnd also has a fix for it as well, which moves emif-asm-offsets.s into include/generated, as that will always exist prior to these rules being invoked. Arnd's passing it through his randconfig builder before publishing it.I do not like this idea. Not sure exactly what Arnd is trying to do, but the same file should not be touched from multiple points in case Kbuild descends into mach-omap2/ and memory/ at the same time. I recommend to put copies in each directory: arch/arm/mach-omap2/emif-asm-offsets.h drivers/memory/ti-emif-asm-offsets.h If you want me to send a patch, I will give it a try.Or we try and find another way around this. The original idea was to start throwing platform specific (iow, stuff in arch/arm/mach-omap2/) includes into arch/arm/kernel/asm-offsets.c. I objected to that, and suggested that the generic infrastructure for doing the asm-offsets thing should be used to generate an architecture specific header. Then it turns out that files in both arch/arm/mach-omap2 and drivers/memory need these constants, and TI proposed the existing method. Obviously, all the right people reviewed it and approved it, which is why it's now in mainline, but unfortunately it doesn't actually work, and breaks my kernel builds!
A solution that I see is to allow pm-asm-offsets to just include the macros that would be defined by emif-asm-offsets in the header generated by pm-asm-offsets. This way there is no need to introduce the arch -> drivers build dependency that is causing our issue, each driver generates its own header with everything it needs included. I'll move the actual macro definitions for emif-asm-offsets.c into a header and then by including them in both emif-asm-offsets and pm-asm-offsets we get all macro definitions in both places with them still being defined only in one location. I've inlined the changes below. I will send a proper split up series if it's considered acceptable. Regards, Dave 8< ----------------------
From 7350c7caa773d7235ddb21013bd039a16cb6d156 Mon Sep 17 00:00:00 2001
From: Dave Gerlach <redacted> Date: Mon, 9 Apr 2018 10:56:59 -0500 Subject: [PATCH] RFC: Fix build when using split object directories The sleep33xx and sleep43xx files should not depend on a header file generated in drivers/memory. Remove this dependency and instead generate the macros needed as part of pm-asm-offsets.c to avoid complicating the build. Signed-off-by: Dave Gerlach <redacted> --- arch/arm/mach-omap2/Makefile | 7 +--- arch/arm/mach-omap2/pm-asm-offsets.c | 3 ++ arch/arm/mach-omap2/sleep33xx.S | 1 - arch/arm/mach-omap2/sleep43xx.S | 1 - drivers/memory/emif-asm-offsets.c | 72 +--------------------------------- include/linux/ti-emif-sram.h | 75 ++++++++++++++++++++++++++++++++++++ 6 files changed, 81 insertions(+), 78 deletions(-)
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 4603c30fef73..1257810cdb80 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile@@ -243,8 +243,5 @@ arch/arm/mach-omap2/pm-asm-offsets.s:arch/arm/mach-omap2/pm-asm-offsets.c include/generated/ti-pm-asm-offsets.h: arch/arm/mach-omap2/pm-asm-offsets.s FORCE $(call filechk,offsets,__TI_PM_ASM_OFFSETS_H__) -# For rule to generate ti-emif-asm-offsets.h dependency -include drivers/memory/Makefile.asm-offsets - -arch/arm/mach-omap2/sleep33xx.o: include/generated/ti-pm-asm-offsets.h include/generated/ti-emif-asm-offsets.h -arch/arm/mach-omap2/sleep43xx.o: include/generated/ti-pm-asm-offsets.h include/generated/ti-emif-asm-offsets.h +arch/arm/mach-omap2/sleep33xx.o: include/generated/ti-pm-asm-offsets.h +arch/arm/mach-omap2/sleep43xx.o: include/generated/ti-pm-asm-offsets.h
diff --git a/arch/arm/mach-omap2/pm-asm-offsets.cb/arch/arm/mach-omap2/pm-asm-offsets.c index 6d4392da7c11..b9846b19e5e2 100644
--- a/arch/arm/mach-omap2/pm-asm-offsets.c
+++ b/arch/arm/mach-omap2/pm-asm-offsets.c@@ -7,9 +7,12 @@ #include <linux/kbuild.h> #include <linux/platform_data/pm33xx.h> +#include <linux/ti-emif-sram.h> int main(void) { + ti_emif_asm_offsets(); + DEFINE(AMX3_PM_WFI_FLAGS_OFFSET, offsetof(struct am33xx_pm_sram_data, wfi_flags)); DEFINE(AMX3_PM_L2_AUX_CTRL_VAL_OFFSET,
diff --git a/arch/arm/mach-omap2/sleep33xx.S b/arch/arm/mach-omap2/sleep33xx.S
index 218d79930b04..322b3bb868b4 100644
--- a/arch/arm/mach-omap2/sleep33xx.S
+++ b/arch/arm/mach-omap2/sleep33xx.S@@ -6,7 +6,6 @@ * Dave Gerlach, Vaibhav Bedia */ -#include <generated/ti-emif-asm-offsets.h> #include <generated/ti-pm-asm-offsets.h> #include <linux/linkage.h> #include <linux/ti-emif-sram.h>
diff --git a/arch/arm/mach-omap2/sleep43xx.S b/arch/arm/mach-omap2/sleep43xx.S
index b24be624e8b9..8903814a6677 100644
--- a/arch/arm/mach-omap2/sleep43xx.S
+++ b/arch/arm/mach-omap2/sleep43xx.S@@ -6,7 +6,6 @@ * Dave Gerlach, Vaibhav Bedia */ -#include <generated/ti-emif-asm-offsets.h> #include <generated/ti-pm-asm-offsets.h> #include <linux/linkage.h> #include <linux/ti-emif-sram.h>
diff --git a/drivers/memory/emif-asm-offsets.c b/drivers/memory/emif-asm-offsets.c
index 71a89d5d3efd..db8043019ec6 100644
--- a/drivers/memory/emif-asm-offsets.c
+++ b/drivers/memory/emif-asm-offsets.c@@ -16,77 +16,7 @@ int main(void) { - DEFINE(EMIF_SDCFG_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_sdcfg_val)); - DEFINE(EMIF_TIMING1_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_timing1_val)); - DEFINE(EMIF_TIMING2_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_timing2_val)); - DEFINE(EMIF_TIMING3_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_timing3_val)); - DEFINE(EMIF_REF_CTRL_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_ref_ctrl_val)); - DEFINE(EMIF_ZQCFG_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_zqcfg_val)); - DEFINE(EMIF_PMCR_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_pmcr_val)); - DEFINE(EMIF_PMCR_SHDW_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_pmcr_shdw_val)); - DEFINE(EMIF_RD_WR_LEVEL_RAMP_CTRL_OFFSET, - offsetof(struct emif_regs_amx3, emif_rd_wr_level_ramp_ctrl)); - DEFINE(EMIF_RD_WR_EXEC_THRESH_OFFSET, - offsetof(struct emif_regs_amx3, emif_rd_wr_exec_thresh)); - DEFINE(EMIF_COS_CONFIG_OFFSET, - offsetof(struct emif_regs_amx3, emif_cos_config)); - DEFINE(EMIF_PRIORITY_TO_COS_MAPPING_OFFSET, - offsetof(struct emif_regs_amx3, emif_priority_to_cos_mapping)); - DEFINE(EMIF_CONNECT_ID_SERV_1_MAP_OFFSET, - offsetof(struct emif_regs_amx3, emif_connect_id_serv_1_map)); - DEFINE(EMIF_CONNECT_ID_SERV_2_MAP_OFFSET, - offsetof(struct emif_regs_amx3, emif_connect_id_serv_2_map)); - DEFINE(EMIF_OCP_CONFIG_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_ocp_config_val)); - DEFINE(EMIF_LPDDR2_NVM_TIM_OFFSET, - offsetof(struct emif_regs_amx3, emif_lpddr2_nvm_tim)); - DEFINE(EMIF_LPDDR2_NVM_TIM_SHDW_OFFSET, - offsetof(struct emif_regs_amx3, emif_lpddr2_nvm_tim_shdw)); - DEFINE(EMIF_DLL_CALIB_CTRL_VAL_OFFSET, - offsetof(struct emif_regs_amx3, emif_dll_calib_ctrl_val)); - DEFINE(EMIF_DLL_CALIB_CTRL_VAL_SHDW_OFFSET, - offsetof(struct emif_regs_amx3, emif_dll_calib_ctrl_val_shdw)); - DEFINE(EMIF_DDR_PHY_CTLR_1_OFFSET, - offsetof(struct emif_regs_amx3, emif_ddr_phy_ctlr_1)); - DEFINE(EMIF_EXT_PHY_CTRL_VALS_OFFSET, - offsetof(struct emif_regs_amx3, emif_ext_phy_ctrl_vals)); - DEFINE(EMIF_REGS_AMX3_SIZE, sizeof(struct emif_regs_amx3)); - - BLANK(); - - DEFINE(EMIF_PM_BASE_ADDR_VIRT_OFFSET, - offsetof(struct ti_emif_pm_data, ti_emif_base_addr_virt)); - DEFINE(EMIF_PM_BASE_ADDR_PHYS_OFFSET, - offsetof(struct ti_emif_pm_data, ti_emif_base_addr_phys)); - DEFINE(EMIF_PM_CONFIG_OFFSET, - offsetof(struct ti_emif_pm_data, ti_emif_sram_config)); - DEFINE(EMIF_PM_REGS_VIRT_OFFSET, - offsetof(struct ti_emif_pm_data, regs_virt)); - DEFINE(EMIF_PM_REGS_PHYS_OFFSET, - offsetof(struct ti_emif_pm_data, regs_phys)); - DEFINE(EMIF_PM_DATA_SIZE, sizeof(struct ti_emif_pm_data)); - - BLANK(); - - DEFINE(EMIF_PM_SAVE_CONTEXT_OFFSET, - offsetof(struct ti_emif_pm_functions, save_context)); - DEFINE(EMIF_PM_RESTORE_CONTEXT_OFFSET, - offsetof(struct ti_emif_pm_functions, restore_context)); - DEFINE(EMIF_PM_ENTER_SR_OFFSET, - offsetof(struct ti_emif_pm_functions, enter_sr)); - DEFINE(EMIF_PM_EXIT_SR_OFFSET, - offsetof(struct ti_emif_pm_functions, exit_sr)); - DEFINE(EMIF_PM_ABORT_SR_OFFSET, - offsetof(struct ti_emif_pm_functions, abort_sr)); - DEFINE(EMIF_PM_FUNCTIONS_SIZE, sizeof(struct ti_emif_pm_functions)); + ti_emif_asm_offsets(); return 0; }
diff --git a/include/linux/ti-emif-sram.h b/include/linux/ti-emif-sram.h
index 45bc6b376492..53604b087f2c 100644
--- a/include/linux/ti-emif-sram.h
+++ b/include/linux/ti-emif-sram.h@@ -60,6 +60,81 @@ struct ti_emif_pm_functions { u32 abort_sr; } __packed __aligned(8); +static inline void ti_emif_asm_offsets(void) +{ + DEFINE(EMIF_SDCFG_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_sdcfg_val)); + DEFINE(EMIF_TIMING1_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_timing1_val)); + DEFINE(EMIF_TIMING2_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_timing2_val)); + DEFINE(EMIF_TIMING3_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_timing3_val)); + DEFINE(EMIF_REF_CTRL_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_ref_ctrl_val)); + DEFINE(EMIF_ZQCFG_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_zqcfg_val)); + DEFINE(EMIF_PMCR_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_pmcr_val)); + DEFINE(EMIF_PMCR_SHDW_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_pmcr_shdw_val)); + DEFINE(EMIF_RD_WR_LEVEL_RAMP_CTRL_OFFSET, + offsetof(struct emif_regs_amx3, emif_rd_wr_level_ramp_ctrl)); + DEFINE(EMIF_RD_WR_EXEC_THRESH_OFFSET, + offsetof(struct emif_regs_amx3, emif_rd_wr_exec_thresh)); + DEFINE(EMIF_COS_CONFIG_OFFSET, + offsetof(struct emif_regs_amx3, emif_cos_config)); + DEFINE(EMIF_PRIORITY_TO_COS_MAPPING_OFFSET, + offsetof(struct emif_regs_amx3, emif_priority_to_cos_mapping)); + DEFINE(EMIF_CONNECT_ID_SERV_1_MAP_OFFSET, + offsetof(struct emif_regs_amx3, emif_connect_id_serv_1_map)); + DEFINE(EMIF_CONNECT_ID_SERV_2_MAP_OFFSET, + offsetof(struct emif_regs_amx3, emif_connect_id_serv_2_map)); + DEFINE(EMIF_OCP_CONFIG_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_ocp_config_val)); + DEFINE(EMIF_LPDDR2_NVM_TIM_OFFSET, + offsetof(struct emif_regs_amx3, emif_lpddr2_nvm_tim)); + DEFINE(EMIF_LPDDR2_NVM_TIM_SHDW_OFFSET, + offsetof(struct emif_regs_amx3, emif_lpddr2_nvm_tim_shdw)); + DEFINE(EMIF_DLL_CALIB_CTRL_VAL_OFFSET, + offsetof(struct emif_regs_amx3, emif_dll_calib_ctrl_val)); + DEFINE(EMIF_DLL_CALIB_CTRL_VAL_SHDW_OFFSET, + offsetof(struct emif_regs_amx3, emif_dll_calib_ctrl_val_shdw)); + DEFINE(EMIF_DDR_PHY_CTLR_1_OFFSET, + offsetof(struct emif_regs_amx3, emif_ddr_phy_ctlr_1)); + DEFINE(EMIF_EXT_PHY_CTRL_VALS_OFFSET, + offsetof(struct emif_regs_amx3, emif_ext_phy_ctrl_vals)); + DEFINE(EMIF_REGS_AMX3_SIZE, sizeof(struct emif_regs_amx3)); + + BLANK(); + + DEFINE(EMIF_PM_BASE_ADDR_VIRT_OFFSET, + offsetof(struct ti_emif_pm_data, ti_emif_base_addr_virt)); + DEFINE(EMIF_PM_BASE_ADDR_PHYS_OFFSET, + offsetof(struct ti_emif_pm_data, ti_emif_base_addr_phys)); + DEFINE(EMIF_PM_CONFIG_OFFSET, + offsetof(struct ti_emif_pm_data, ti_emif_sram_config)); + DEFINE(EMIF_PM_REGS_VIRT_OFFSET, + offsetof(struct ti_emif_pm_data, regs_virt)); + DEFINE(EMIF_PM_REGS_PHYS_OFFSET, + offsetof(struct ti_emif_pm_data, regs_phys)); + DEFINE(EMIF_PM_DATA_SIZE, sizeof(struct ti_emif_pm_data)); + + BLANK(); + + DEFINE(EMIF_PM_SAVE_CONTEXT_OFFSET, + offsetof(struct ti_emif_pm_functions, save_context)); + DEFINE(EMIF_PM_RESTORE_CONTEXT_OFFSET, + offsetof(struct ti_emif_pm_functions, restore_context)); + DEFINE(EMIF_PM_ENTER_SR_OFFSET, + offsetof(struct ti_emif_pm_functions, enter_sr)); + DEFINE(EMIF_PM_EXIT_SR_OFFSET, + offsetof(struct ti_emif_pm_functions, exit_sr)); + DEFINE(EMIF_PM_ABORT_SR_OFFSET, + offsetof(struct ti_emif_pm_functions, abort_sr)); + DEFINE(EMIF_PM_FUNCTIONS_SIZE, sizeof(struct ti_emif_pm_functions)); +} + struct gen_pool; int ti_emif_copy_pm_function_table(struct gen_pool *sram_pool, void *dst);
--
1.9.1